Fix gallery dismiss transition from sheet-presented VC

Closes #490

CHANGELOG-release.md

@@ -1,3 +1,109 @@
+## 2024.2
+This release introduces push notifications as well as an enhanced multi-column interface on iPadOS!
+
+Features/Improvements:
+- Push notifications
+- Add post preview to Appearance preferences
+- Show instance announcements in Notifications tab
+- Add subscription option to Tip Jar
+- iPadOS: Multi-column navigation
+- Pleroma/Akkoma: Emoji reaction notifications
+
+Bugfixes:
+- Fix fetching server info on some instances
+- Fix attachment captions not displaying while loading in gallery
+- macOS: Remove in-app Safari preferences
+- Pleroma: Handle posts with missing creation date
+
+## 2024.1
+This update includes a significant improvements for the attachment gallery and displaying rich text posts. See below for a full list of improvements and fixes.
+
+Features/Improvements:
+- Improve attachment gallery
+  - Improve animations
+  - Display video captions
+  - Support sharing/saving videos
+  - Resume music playback after playing videos
+- Improve rich text display in posts
+- Add See Results button to polls
+- Add Share and Save to Photos menu items to post attachments
+- Show verified links in account lists
+- Display message on empty list timelines
+- Add preference to indicate attachments lacking alt text
+- Mark notifications as read on Mastodon web frontend once displayed
+- iPadOS: Support tapping the selected sidebar item to scroll to top
+
+Bugfixes:
+- Fix issue changing scope after searching
+- Fix crash when searching "from:me"
+- Fix tapping Followers button on profile opening Following screen
+- Fix crash when removing poll option on Compose screen
+- Fix hang when sharing video/GIFV attachments
+- Fix stretched Save to Photos icon when sharing attachments
+- Fix GIFV playback preventing device sleep
+- Fix Notifications tab not scrolling to top when tab bar item tapped
+- Fix selection not clearing on Trending Hashtags
+- Fix fast account switcher overlapping iPhone sensor housing in landscape
+- Fix Edit List screen not updating when adding/removing accounts
+- Fix changing list reply policy not refreshing timeline
+- Pixelfed: Fix crash when there are multiple follow notifications from the same account
+- macOS: Fix attachment gallery displaying improperly when Reduce Motion is on
+
+## 2023.8
+This update adds support for search operators and post translation, and improves support for displaying rich-text posts. See below for a full list of improvements and fixes.
+
+Features/Improvements:
+- Show search operators on Mastodon 4.2
+- Use server-set preference for default post visibility, language, and (on Hometown) local-only
+- Allow changing list reply policy and exclusivity options on Edit List screen
+- Add Translate action to conversations (on supported Mastodon instances)
+- Style block quotes correclty in rich-text posts
+- Improve the appearance of lists in rich-text posts
+- Add preference to underline links
+- Compress uploaded video attachments to fit within instance limits
+- Add preference to hide attachments in timelines
+- Update visible timestamps after refresh notifications/timelines
+- iPadOS: Allow switching between split screen and fullscreen navigation modes
+- Pixelfed: Improve error message when uploading attachment fails
+- Akkoma: Enable composing local-only posts
+
+Bugfixes:
+- Fix older notifications not loading if all initiially-loaded ones are grouped together
+- Fix List timelines failing to refresh if they were initially empty
+- Fix replies to posts with CWs always showing confirmation dialog when cancelling
+- Fix Compose screen permitting setting the language to multiple/undefined
+- Fix crash when uploading attachments without file extensions
+- Fix Live Text button reappearing with swiping between attachment gallery pages
+- Fix avatars on certain notifications flickering when refreshing
+- Fix avatars on follow request notifications not being rounded
+- Fix timeline jump button appearing incorrectly when Button Shapes acccessibility setting is on
+- Fix public instance timeline screen not handling post deletion correctly
+- Fix post that's reblogged and contains a followed hashtag not showing the reblogger
+- Fix crash on launch when reblogged posts are visible
+- Fix crash when showing display names with custom emoji in certain places
+- Fix crash when showing trending hashtags without history data
+- Fix potential crash on instance selector screen
+- Fix potential crash if the app is dismissed while fast account switcher is animating
+- Fix potential crash after deleting List on the Eplore screen
+- Pixelfed: Fix error decoding certain posts
+- VoiceOver: Fix history entries on Edit History screen not having descriptions
+- iPadOS: Fix delay on app launch before "My Profile" sidebar item appears
+- iPadOS: Fix language picker button not highlighting when hovered with the cursor
+- macOS: Fix "New Post" window title appearing twice
+- macOS: Fix Cmd+W sometimes closing non-foreground windows
+- macOS: Fix visibility/local-only buttons not appearing in Compose toolbar
+- macOS: Fix images copied from Safari not pasting on Compose screen
+
+## 2023.7
+This update adds support for iOS 17 and includes some minor changes.
+
+Changes:
+- Support iOS 17
+- Indicate that edit history may be incomplete for remote posts
+- Fix crash when collapsing to tab-bar mode in certain circumstances
+- Fix potential crashes when using autocomplete on the Compose screen
+- Fix Iceshrimp instances not being detected
+
 ## 2023.6
 This update fixes a number of bugs and improves stability throughout the app. See below for a list of fixes.
 

CHANGELOG.md

@@ -1,5 +1,203 @@
 # Changelog
 
+## 2024.3 (126)
+Bugfixes:
+- Fix an issue displaying post HTML in certain edge cases
+- Fix crash when video attachment playback ends
+- Fix excessive CPU usage when scrubbing video attachment
+- Fix video attachment thubmnails being flipped on Compose screen
+- Pleroma: Fix editing attachment descriptions not working
+
+## 2024.2 (124)
+Features/Improvements:
+- Add subscription option to Tip Jar
+
+Bugfixes:
+- Fix attachment captions not displaying while loading in gallery
+- Fix tapping follow request push notification not working
+- Pleroma: Handle posts with missing creation dates
+
+## 2024.2 (122)
+Features/Improvements:
+- Show instance announcements in Notifications
+- Pleroma/Akkoma: Display emoji reactions in Notifications
+- Pleroma/Akkoma: Add push notifications for emoji reactions
+
+Bugfixes:
+- Fix issue fetching server info on some instances
+- Fix Preferences background color not updating after changing Pure Black Dark Mode
+- Fix push subscription settings background using incorrect color with Pure Black Dark Mode off
+
+## 2024.2 (121)
+This build introduces a new multi-column navigation mode on iPad. You can revert to the old mode under Preferences -> Appearance.
+
+Features/Improvements:
+- iPadOS: Enable multi-column navigation
+- Add post preview to Appearance preferences
+- Consolidate Media preferences section with Appearance
+- Add icons to Preferences sections
+
+Bugfixes:
+- Fix push notifications not working on Pleroma/Akkoma and older Mastodon versions
+- Fix push notifications not working with certain accounts
+- Fix links on About screen not being aligned
+- macOS: Remove non-functional in-app Safari preferences
+
+## 2024.2 (120)
+This build adds push notifications, which can be enabled in Preferences -> Notifications.
+
+## 2024.1 (119)
+Features/Improvements:
+- Add Account Settings button to Preferences
+
+## 2024.1 (118)
+Bugfixes:
+- Fix music not pausing/resuming when video playback starts
+
+## 2024.1 (117)
+Features/Improvements:
+- Add See Results button to polls
+
+Bugfixes:
+- Fix race condition when presenting gallery for 4th of more than 4 attachments
+- Fix gallery interactive dismissal not working for 4th or later attachments on posts with more than 4 attachments
+- Pixelfed: Fix crash when there are multiple follow notifications from the same account
+- macOS: Fix gallery being positioned incorrectly when Reduce Motion is on
+
+## 2024.1 (116)
+Features/Improvements:
+- Display message on empty list timelines
+- Add preference to display badge for attachments that lack alt text
+- Mark notifications as read on the Mastodon web frontend once displayed
+- iPadOS: Support tapping the selected sidebar item to scroll to top
+
+Bugfixes:
+- Fix playing back GIFVs preventing the device sleeping
+- Fix incorrect cell separator insets followers/following lists
+- Fix memory leak in attachments gallery
+- Fix notifications tab not scrolling to top when tab bar item tapped
+- Fix Trending Hashtags screen not clearing selection
+- Fix fast account switcher overlapping sensor housing on landscape iPhones
+- Fix Edit List screen not updating when accounts are added/removed
+- Fix changing List reply policy not refreshing list timeline
+- macOS: Fix certain gallery attachments being incorrectly sized/positioned
+
+## 2024.1 (115)
+Features/Improvements:
+- Rewrite attachment gallery
+  - Fixes a number of long-standing issues
+  - Adds a custom video player that shows controls and caption
+  - Supports sharing/saving videos
+
+Bugfixes:
+- Fix hang when sharing video/gifv attachments
+- Fix stretched icon for Save to Photos action when sharing attachment
+- Fix crash when Compose screen is dismissed while adding attachments
+- Fix crash when sharing attachment from context menu on iPad
+
+## 2024.1 (113)
+Features/Improvements:
+- Add Share and Save to Photos context menu actions to attachments
+- Show verified link in account lists
+- Change cell separator appearance on posts
+
+Bugfixes:
+- Fix tapping Followers button on profiles opening Following screen
+- Fix crash when removing poll option on Compose screen
+- Fix leading indentation in post text being ignored
+- Fix crash when viewing posts containing HTML numeric character references
+- Fix paragraphs starting with links being combined with previous paragraph
+
+## 2024.1 (112)
+Bugfixes:
+- Fix profile field links not displaying
+- Fix various issues displaying rich text in posts
+- Fix issue changing scope after searching
+- Fix crash when searching for "from:me"
+
+## 2024.1 (111)
+This build contains a complete rewrite of the HTML parsing pipeline for displaying posts. If you notice any issues with how post text appears—especially when it differs from on the web—please report it!
+
+## 2023.8 (110)
+Bugfixes:
+- Fix potential crash after deleting List on Explore screen
+
+## 2023.8 (109)
+Features/Improvements:
+- Add Translate action to conversations (on supported Mastodon instances)
+- Improve share extension launch speed
+- Add preference for hiding attachments in timelines
+
+Bugfixes:
+- Fix crash during state restoration when reblogged statuses are present
+- Fix timeline state restoration using incorrect scroll position in certain circumstances
+- Fix status that is reblogged and contains a followed hashtag not showing reblogger label
+- macOS: Fix visibility/local-only buttons not appearing in Compose toolbar
+- macOS: Fix images copied from Safari not pasting on Compose screen
+
+## 2023.8 (107)
+Features/Improvements:
+- Style blockquotes in statuses
+- Use server language preference for search operator suggestions
+- Render IDN domains in the account switcher
+
+Bugfixes:
+- Fix crash when showing trending hashtags with improper history data
+- Fix crash when uploading attachment w/o file extension
+- Fix status deletions not being handled properly in logged out views
+- Fix status history entries not having VoiceOver descriptions
+- Fix avatars in follow request notifications not being rounded
+- Fix potential crash if the app is dismissed while fast account switcher is animating
+- Fix error decoding certain statuses on Pixelfed
+
+## 2023.8 (106)
+Bugfixes:
+- Fix being able to set post language to multiple/undefined
+- iPadOS: Fix language picker button not having a pointer effect
+- macOS: Fix Cmd+W sometimes closing the non-foreground window
+
+## 2023.8 (105)
+Features/Improvements:
+- Use server-set preference for default post visibility, language, and (on Hometown) local-only
+- Add preference to underline links
+- Allow changing list reply policy and exclusivity from menu on Edit List screen
+- Attribute network requests to user, rather than developer, when appropriate
+
+Bugfixes:
+- Fix older notifications not loading if all initially-loaded are grouped together
+- Fix list timelines failing to refresh if there were no statuses initially
+- Fix timeline jump button having a background when Button Shapes accessibility setting is on
+- Fix crash when relaunching app after not being launched in more than a week
+- Fix potential crash on instance selector screen
+- Fix crash when showing display names with custom emojis in certain places
+
+## 2023.8 (104)
+Features/Improvements:
+- Show search operators on Mastodon 4.2
+- Enable composing local-only posts on Akkoma
+- Update timestamps after refreshing notifications/timelines
+- Improve list appearance in rich text posts
+- Improve error message when uploading attachment to Pixelfed fails
+- Compress uploaded videos to fit within instance limits
+- iPad: Allow switching between split screen and full screen navigation
+
+Bugfixes:
+- Fix replies to posts with content warnings always showing confirmation dialog before closing
+- Fix Live Text control reappearing when swiping between attachment gallery pages
+- Fix avatars on certain notifications flickering when refreshing
+- iPad: Fix delay on app launch before "My Profile" sidebar item appears
+- macOS: Fix "New Post" window title appearing twice
+
+## 2023.7 (103)
+Features/Improvements:
+- Add support for iOS 17
+- Indicate that edit history may be incomplete for remote posts
+
+Bugfixes:
+- Fix crash when collapsing to tab-bar mode in certain circumstances
+- Fix potential crashes when using autocomplete on the Compose screen
+- Fix Iceshrimp instances not being detected
+
 ## 2023.6 (100)
 Bugfixes:
 - Fix Conversation main post flashing incorrect background color when touched

NotificationExtension/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>TuskerInfo</key>
+	<dict>
+		<key>PushProxyHost</key>
+		<string>$(TUSKER_PUSH_PROXY_HOST)</string>
+		<key>PushProxyScheme</key>
+		<string>$(TUSKER_PUSH_PROXY_SCHEME)</string>
+		<key>SentryDSN</key>
+		<string>$(SENTRY_DSN)</string>
+	</dict>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.usernotifications.service</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).NotificationService</string>
+	</dict>
+</dict>
+</plist>

NotificationExtension/NotificationExtension.entitlements

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.$(BUNDLE_ID_PREFIX).Tusker</string>
+	</array>
+	<key>com.apple.security.network.client</key>
+	<true/>
+</dict>
+</plist>

NotificationExtension/NotificationService.swift

@@ -0,0 +1,361 @@
+//
+//  NotificationService.swift
+//  NotificationExtension
+//
+//  Created by Shadowfacts on 4/9/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import UserNotifications
+import UserAccounts
+import PushNotifications
+import CryptoKit
+import OSLog
+import Pachyderm
+import Intents
+import HTMLStreamer
+import WebURL
+
+private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "NotificationService")
+
+class NotificationService: UNNotificationServiceExtension {
+    
+    private static let textConverter = TextConverter(configuration: .init(insertNewlines: false), callbacks: HTMLCallbacks.self)
+    
+    private var pendingRequest: (UNMutableNotificationContent, (UNNotificationContent) -> Void, Task<Void, Never>)?
+
+    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
+        guard let mutableContent = request.content.mutableCopy() as? UNMutableNotificationContent else {
+            logger.error("Couldn't get mutable content")
+            contentHandler(request.content)
+            return
+        }
+        
+        guard request.content.userInfo["v"] as? Int == 1,
+              let accountID = (request.content.userInfo["ctx"] as? String).flatMap(\.removingPercentEncoding),
+              let account = UserAccountsManager.shared.getAccount(id: accountID),
+              let subscription = getSubscription(account: account),
+              let encryptedBody = (request.content.userInfo["data"] as? String).flatMap({ Data(base64Encoded: $0) }),
+              let salt = (request.content.userInfo["salt"] as? String).flatMap(decodeBase64URL(_:)),
+              let serverPublicKeyData = (request.content.userInfo["pk"] as? String).flatMap(decodeBase64URL(_:)) else {
+            logger.error("Missing info from push notification")
+            contentHandler(request.content)
+            return
+        }
+        
+        guard let body = decryptNotification(subscription: subscription, serverPublicKeyData: serverPublicKeyData, salt: salt, encryptedBody: encryptedBody) else {
+            contentHandler(request.content)
+            return
+        }
+
+        let withoutPadding = body.dropFirst(2)
+        
+        let notification: PushNotification
+        do {
+            notification = try JSONDecoder().decode(PushNotification.self, from: withoutPadding)
+        } catch {
+            logger.error("Unable to decode push payload: \(String(describing: error))")
+            contentHandler(request.content)
+            return
+        }
+        
+        mutableContent.title = notification.title
+        mutableContent.body = notification.body
+        mutableContent.userInfo["notificationID"] = notification.notificationID
+        mutableContent.userInfo["accountID"] = accountID
+
+        let task = Task {
+            await updateNotificationContent(mutableContent, account: account, push: notification)
+            if !Task.isCancelled {
+                contentHandler(pendingRequest?.0 ?? mutableContent)
+                pendingRequest = nil
+            }
+        }
+        pendingRequest = (mutableContent, contentHandler, task)
+    }
+    
+    override func serviceExtensionTimeWillExpire() {
+        if let pendingRequest {
+            logger.debug("Expiring with pending request")
+            pendingRequest.2.cancel()
+            pendingRequest.1(pendingRequest.0)
+            self.pendingRequest = nil
+        } else {
+            logger.debug("Expiring without pending request")
+        }
+    }
+    
+    private func updateNotificationContent(_ content: UNMutableNotificationContent, account: UserAccountInfo, push: PushNotification) async {
+        let client = Client(baseURL: account.instanceURL, accessToken: account.accessToken)
+        let notification: Pachyderm.Notification
+        do {
+            notification = try await client.run(Client.getNotification(id: push.notificationID)).0
+        } catch {
+            logger.error("Error fetching notification: \(String(describing: error))")
+            return
+        }
+        
+        let kindStr: String?
+        switch notification.kind {
+        case .reblog:
+            kindStr = "🔁 Reblogged"
+        case .favourite:
+            kindStr = "⭐️ Favorited"
+        case .follow:
+            kindStr = "👤 Followed by @\(notification.account.acct)"
+        case .followRequest:
+            kindStr = "👤 Asked to follow by @\(notification.account.acct)"
+        case .poll:
+            kindStr = "📊 Poll finished"
+        case .update:
+            kindStr = "✏️ Edited"
+        case .emojiReaction:
+            if let emoji = notification.emoji {
+                kindStr = "\(emoji) Reacted"
+            } else {
+                kindStr = nil
+            }
+        default:
+            kindStr = nil
+        }
+        
+        let notificationContent: String?
+        if let status = notification.status {
+            notificationContent = NotificationService.textConverter.convert(html: status.content)
+        } else if notification.kind == .follow || notification.kind == .followRequest {
+            notificationContent = nil
+        } else {
+            notificationContent = push.body
+        }
+        
+        content.body = [kindStr, notificationContent].compactMap { $0 }.joined(separator: "\n")
+        
+        let attachmentDataTask: Task<URL?, Never>?
+        // We deliberately don't include attachments for other types of notifications that have statuses (favs, etc.)
+        // because we risk just fetching the same thing a bunch of times for many senders.
+        if notification.kind == .mention || notification.kind == .status || notification.kind == .update,
+           let attachment = notification.status?.attachments.first {
+            let url = attachment.previewURL ?? attachment.url
+            attachmentDataTask = Task {
+                do {
+                    let data = try await URLSession.shared.data(from: url).0
+                    let localAttachmentURL = FileManager.default.temporaryDirectory.appendingPathComponent("attachment_\(attachment.id)").appendingPathExtension(url.pathExtension)
+                    try data.write(to: localAttachmentURL)
+                    return localAttachmentURL
+                } catch {
+                    logger.error("Error setting notification attachments: \(String(describing: error))")
+                    return nil
+                }
+            }
+        } else {
+            attachmentDataTask = nil
+        }
+        
+        let conversationIdentifier: String?
+        if let status = notification.status {
+            if let context = status.pleromaExtras?.context {
+                conversationIdentifier = "context:\(context)"
+            } else if [Notification.Kind.reblog, .favourite, .poll, .update].contains(notification.kind) {
+                conversationIdentifier = "status:\(status.id)"
+            } else {
+                conversationIdentifier = nil
+            }
+        } else {
+            conversationIdentifier = nil
+        }
+        
+        let account: Account?
+        switch notification.kind {
+        case .mention, .status:
+            account = notification.status?.account
+        default:
+            account = notification.account
+        }
+        let sender: INPerson?
+        if let account {
+            let handle = INPersonHandle(value: "@\(account.acct)", type: .unknown)
+            let image: INImage?
+            if let avatar = account.avatar,
+               let (data, resp) = try? await URLSession.shared.data(from: avatar),
+               let code = (resp as? HTTPURLResponse)?.statusCode,
+               (200...299).contains(code) {
+                image = INImage(imageData: data)
+            } else {
+                image = nil
+            }
+            sender = INPerson(
+                personHandle: handle,
+                nameComponents: nil,
+                displayName: account.displayName,
+                image: image,
+                contactIdentifier: nil,
+                customIdentifier: account.id
+            )
+        } else {
+            sender = nil
+        }
+
+        let intent = INSendMessageIntent(
+            recipients: nil,
+            outgoingMessageType: .outgoingMessageText,
+            content: notificationContent,
+            speakableGroupName: nil,
+            conversationIdentifier: conversationIdentifier,
+            serviceName: nil,
+            sender: sender,
+            attachments: nil
+        )
+        
+        let interaction = INInteraction(intent: intent, response: nil)
+        interaction.direction = .incoming
+        
+        do {
+            try await interaction.donate()
+        } catch {
+            logger.error("Error donating interaction: \(String(describing: error))")
+            return
+        }
+        
+        let updatedContent: UNMutableNotificationContent
+        do {
+            let newContent = try content.updating(from: intent)
+            if let newMutableContent = newContent.mutableCopy() as? UNMutableNotificationContent {
+                pendingRequest?.0 = newMutableContent
+                updatedContent = newMutableContent
+            } else {
+                updatedContent = content
+            }
+        } catch {
+            logger.error("Error updating notification from intent: \(String(describing: error))")
+            updatedContent = content
+        }
+        
+        if let localAttachmentURL = await attachmentDataTask?.value,
+           let attachment = try? UNNotificationAttachment(identifier: localAttachmentURL.lastPathComponent, url: localAttachmentURL) {
+            updatedContent.attachments = [
+                attachment
+            ]
+        }
+    }
+    
+    private func getSubscription(account: UserAccountInfo) -> PushNotifications.PushSubscription? {
+        DispatchQueue.main.sync {
+            // this is necessary because of a swift bug: https://github.com/apple/swift/pull/72507
+            MainActor.runUnsafely {
+                PushManager.shared.pushSubscription(account: account)
+            }
+        }
+    }
+    
+    private func decryptNotification(subscription: PushNotifications.PushSubscription, serverPublicKeyData: Data, salt: Data, encryptedBody: Data) -> Data? {
+        // See https://github.com/ClearlyClaire/webpush/blob/f14a4d52e201128b1b00245d11b6de80d6cfdcd9/lib/webpush/encryption.rb
+        
+        var context = Data()
+        context.append(0)
+        let clientPublicKey = subscription.secretKey.publicKey.x963Representation
+        let clientPublicKeyLength = UInt16(clientPublicKey.count)
+        context.append(UInt8((clientPublicKeyLength >> 8) & 0xFF))
+        context.append(UInt8(clientPublicKeyLength & 0xFF))
+        context.append(clientPublicKey)
+        let serverPublicKeyLength = UInt16(serverPublicKeyData.count)
+        context.append(UInt8((serverPublicKeyLength >> 8) & 0xFF))
+        context.append(UInt8(serverPublicKeyLength & 0xFF))
+        context.append(serverPublicKeyData)
+        
+        func info(encoding: String) -> Data {
+            var info = Data("Content-Encoding: \(encoding)\0P-256".utf8)
+            info.append(context)
+            return info
+        }
+
+        let sharedSecret: SharedSecret
+        do {
+            let serverPublicKey = try P256.KeyAgreement.PublicKey(x963Representation: serverPublicKeyData)
+            sharedSecret = try subscription.secretKey.sharedSecretFromKeyAgreement(with: serverPublicKey)
+        } catch {
+            logger.error("Error getting shared secret: \(String(describing: error))")
+            return nil
+        }
+        
+        let sharedInfo = Data("Content-Encoding: auth\0".utf8)
+        let pseudoRandomKey = sharedSecret.hkdfDerivedSymmetricKey(using: SHA256.self, salt: subscription.authSecret, sharedInfo: sharedInfo, outputByteCount: 32)
+        let contentEncryptionKeyInfo = info(encoding: "aesgcm")
+        let contentEncryptionKey = HKDF<SHA256>.deriveKey(inputKeyMaterial: pseudoRandomKey, salt: salt, info: contentEncryptionKeyInfo, outputByteCount: 16)
+        let nonceInfo = info(encoding: "nonce")
+        let nonce = HKDF<SHA256>.deriveKey(inputKeyMaterial: pseudoRandomKey, salt: salt, info: nonceInfo, outputByteCount: 12)
+        
+        let nonceAndEncryptedBody = nonce.withUnsafeBytes { noncePtr in
+            var data = Data(buffer: noncePtr.bindMemory(to: UInt8.self))
+            data.append(encryptedBody)
+            return data
+        }
+        do {
+            let sealedBox = try AES.GCM.SealedBox(combined: nonceAndEncryptedBody)
+            let decrypted = try AES.GCM.open(sealedBox, using: contentEncryptionKey)
+            return decrypted
+        } catch {
+            logger.error("Error decrypting push: \(String(describing: error))")
+            return nil
+        }
+    }
+
+}
+
+extension MainActor {
+    @_unavailableFromAsync
+    @available(macOS, obsoleted: 14.0)
+    @available(iOS, obsoleted: 17.0)
+    @available(watchOS, obsoleted: 10.0)
+    @available(tvOS, obsoleted: 17.0)
+    @available(visionOS 1.0, *)
+    static func runUnsafely<T>(_ body: @MainActor () throws -> T) rethrows -> T {
+        if #available(macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0, *) {
+            return try MainActor.assumeIsolated(body)
+        }
+        
+        dispatchPrecondition(condition: .onQueue(.main))
+        return try withoutActuallyEscaping(body) { fn in
+            try unsafeBitCast(fn, to: (() throws -> T).self)()
+        }
+    }
+}
+
+private func decodeBase64URL(_ s: String) -> Data? {
+    var str = s.replacingOccurrences(of: "-", with: "+").replacingOccurrences(of: "_", with: "/")
+    if str.count % 4 != 0 {
+        str.append(String(repeating: "=", count: 4 - str.count % 4))
+    }
+    return Data(base64Encoded: str)
+}
+
+// copied from HTMLConverter.Callbacks, blergh
+private struct HTMLCallbacks: HTMLConversionCallbacks {
+    static func makeURL(string: String) -> URL? {
+        // Converting WebURL to URL is a small but non-trivial expense (since it works by
+        // serializing the WebURL as a string and then having Foundation parse it again),
+        // so, if available, use the system parser which doesn't require another round trip.
+        if #available(iOS 16.0, macOS 13.0, *),
+           let url = try? URL.ParseStrategy().parse(string) {
+            url
+        } else if let web = WebURL(string),
+                  let url = URL(web) {
+            url
+        } else {
+            URL(string: string)
+        }
+    }
+    
+    static func elementAction(name: String, attributes: [Attribute]) -> ElementAction {
+        guard name == "span" else {
+            return .default
+        }
+        let clazz = attributes.attributeValue(for: "class")
+        if clazz == "invisible" {
+            return .skip
+        } else if clazz == "ellipsis" {
+            return .append("…")
+        } else {
+            return .default
+        }
+    }
+}

NotificationExtension/PrivacyInfo.xcprivacy

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>1C8F.1</string>
+			</array>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+		</dict>
+	</array>
+</dict>
+</plist>

OpenInTusker/ActionViewController.swift

@@ -8,6 +8,7 @@
 
 import UIKit
 import MobileCoreServices
+import UniformTypeIdentifiers
 
 class ActionViewController: UIViewController {
 
@@ -17,25 +18,29 @@ class ActionViewController: UIViewController {
         super.viewDidLoad()
         
         findURLFromWebPage { (components) in
-            if let components = components {
-                self.searchForURLInApp(components)
-            } else {
-                self.findURLItem { (components) in
-                    if let components = components {
-                        self.searchForURLInApp(components)
+            DispatchQueue.main.async {
+                if let components {
+                    self.searchForURLInApp(components)
+                } else {
+                    self.findURLItem { (components) in
+                        if let components {
+                            DispatchQueue.main.async {
+                                self.searchForURLInApp(components)
+                            }
+                        }
                     }
                 }
             }
         }
     }
     
-    private func findURLFromWebPage(completion: @escaping (URLComponents?) -> Void) {
+    private func findURLFromWebPage(completion: @escaping @Sendable (URLComponents?) -> Void) {
         for item in extensionContext!.inputItems as! [NSExtensionItem] {
             for provider in item.attachments! {
-                guard provider.hasItemConformingToTypeIdentifier(kUTTypePropertyList as String) else {
+                guard provider.hasItemConformingToTypeIdentifier(UTType.propertyList.identifier) else {
                     continue
                 }
-                provider.loadItem(forTypeIdentifier: kUTTypePropertyList as String, options: nil) { (result, error) in
+                provider.loadItem(forTypeIdentifier: UTType.propertyList.identifier, options: nil) { (result, error) in
                     guard let result = result as? [String: Any],
                           let jsResult = result[NSExtensionJavaScriptPreprocessingResultsKey] as? [String: Any],
                           let urlString = jsResult["activityPubURL"] as? String ?? jsResult["url"] as? String,
@@ -53,13 +58,13 @@ class ActionViewController: UIViewController {
         completion(nil)
     }
     
-    private func findURLItem(completion: @escaping (URLComponents?) -> Void) {
+    private func findURLItem(completion: @escaping @Sendable (URLComponents?) -> Void) {
         for item in extensionContext!.inputItems as! [NSExtensionItem] {
             for provider in item.attachments! {
-                guard provider.hasItemConformingToTypeIdentifier(kUTTypeURL as String) else {
+                guard provider.hasItemConformingToTypeIdentifier(UTType.url.identifier) else {
                     continue
                 }
-                provider.loadItem(forTypeIdentifier: kUTTypeURL as String, options: nil) { (result, error) in
+                provider.loadItem(forTypeIdentifier: UTType.url.identifier, options: nil) { (result, error) in
                     guard let result = result as? URL,
                           let components = URLComponents(url: result, resolvingAgainstBaseURL: false) else {
                         completion(nil)

Packages/ComposeUI/.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "self:">
-   </FileRef>
-</Workspace>

Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift

@@ -72,12 +72,12 @@ class PostService: ObservableObject {
                 mediaIDs: uploadedAttachments,
                 sensitive: sensitive,
                 spoilerText: contentWarning,
-                visibility: draft.visibility,
+                visibility: draft.localOnly && mastodonController.instanceFeatures.localOnlyPostsVisibility ? Status.localPostVisibility : draft.visibility.rawValue,
                 language: mastodonController.instanceFeatures.createStatusWithLanguage ? draft.language : nil,
                 pollOptions: draft.poll?.pollOptions.map(\.text),
                 pollExpiresIn: draft.poll == nil ? nil : Int(draft.poll!.duration),
                 pollMultiple: draft.poll?.multiple,
-                localOnly: mastodonController.instanceFeatures.localOnlyPosts ? draft.localOnly : nil,
+                localOnly: mastodonController.instanceFeatures.localOnlyPosts && !mastodonController.instanceFeatures.localOnlyPostsVisibility ? draft.localOnly : nil,
                 idempotencyKey: draft.id.uuidString
             )
         }
@@ -111,16 +111,12 @@ class PostService: ObservableObject {
             do {
                 (data, utType) = try await getData(for: attachment)
                 currentStep += 1
-            } catch let error as AttachmentData.Error {
+            } catch let error as DraftAttachment.ExportError {
                 throw Error.attachmentData(index: index, cause: error)
             }
-            do {
-                let uploaded = try await uploadAttachment(data: data, utType: utType, description: attachment.attachmentDescription)
-                attachments.append(uploaded.id)
-                currentStep += 1
-            } catch let error as Client.Error {
-                throw Error.attachmentUpload(index: index, cause: error)
-            }
+            let uploaded = try await uploadAttachment(index: index, data: data, utType: utType, description: attachment.attachmentDescription)
+            attachments.append(uploaded.id)
+            currentStep += 1
         }
         return attachments
     }
@@ -138,10 +134,21 @@ class PostService: ObservableObject {
         }
     }
     
-    private func uploadAttachment(data: Data, utType: UTType, description: String?) async throws -> Attachment {
-        let formAttachment = FormAttachment(mimeType: utType.preferredMIMEType!, data: data, fileName: "file.\(utType.preferredFilenameExtension!)")
+    private func uploadAttachment(index: Int, data: Data, utType: UTType, description: String?) async throws -> Attachment {
+        guard let mimeType = utType.preferredMIMEType else {
+            throw Error.attachmentMissingMimeType(index: index, type: utType)
+        }
+        var filename = "file"
+        if let ext = utType.preferredFilenameExtension {
+            filename.append(".\(ext)")
+        }
+        let formAttachment = FormAttachment(mimeType: mimeType, data: data, fileName: filename)
         let req = Client.upload(attachment: formAttachment, description: description)
-        return try await mastodonController.run(req).0
+        do {
+            return try await mastodonController.run(req).0
+        } catch let error as Client.Error {
+            throw Error.attachmentUpload(index: index, cause: error)
+        }
     }
     
     private func textForPosting() -> String {
@@ -169,7 +176,8 @@ class PostService: ObservableObject {
     }
     
     enum Error: Swift.Error, LocalizedError {
-        case attachmentData(index: Int, cause: AttachmentData.Error)
+        case attachmentData(index: Int, cause: DraftAttachment.ExportError)
+        case attachmentMissingMimeType(index: Int, type: UTType)
         case attachmentUpload(index: Int, cause: Client.Error)
         case posting(Client.Error)
         
@@ -177,6 +185,8 @@ class PostService: ObservableObject {
             switch self {
             case let .attachmentData(index: index, cause: cause):
                 return "Attachment \(index + 1): \(cause.localizedDescription)"
+            case let .attachmentMissingMimeType(index: index, type: type):
+                return "Attachment \(index + 1): unknown MIME type for \(type.identifier)"
             case let .attachmentUpload(index: index, cause: cause):
                 return "Attachment \(index + 1): \(cause.localizedDescription)"
             case let .posting(error):

Packages/ComposeUI/Sources/ComposeUI/ComposeMastodonContext.swift

@@ -15,7 +15,8 @@ public protocol ComposeMastodonContext {
     var instanceFeatures: InstanceFeatures { get }
     
     func run<Result: Sendable>(_ request: Request<Result>) async throws -> (Result, Pagination?)
-    func getCustomEmojis(completion: @escaping ([Emoji]) -> Void)
+    
+    func getCustomEmojis() async -> [Emoji]
     
     @MainActor
     func searchCachedAccounts(query: String) -> [AccountProtocol]

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentRowController.swift

@@ -136,7 +136,7 @@ class AttachmentRowController: ViewController {
                     .overlay {
                         thumbnailFocusedOverlay
                     }
-                    .frame(width: 80, height: 80)
+                    .frame(width: thumbnailSize, height: thumbnailSize)
                     .onTapGesture {
                         textEditorFocused = false
                         // if we just focus the attachment immediately, the text editor doesn't actually unfocus
@@ -162,7 +162,7 @@ class AttachmentRowController: ViewController {
                 
                 switch controller.descriptionMode {
                 case .allowEntry:
-                    InlineAttachmentDescriptionView(attachment: attachment, minHeight: 80)
+                    InlineAttachmentDescriptionView(attachment: attachment, minHeight: thumbnailSize)
                         .matchedGeometrySource(id: AttachmentDescriptionTextViewID(attachment), presentationID: attachment.id)
                         .focused($textEditorFocused)
                     
@@ -177,11 +177,27 @@ class AttachmentRowController: ViewController {
                 Text(error.localizedDescription)
             }
             .onAppear(perform: controller.updateAttachmentDescriptionState)
+            #if os(visionOS)
+            .onChange(of: textEditorFocused) {
+                if !textEditorFocused && controller.focusAttachmentOnTextEditorUnfocus {
+                    controller.focusAttachment()
+                }
+            }
+            #else
             .onChange(of: textEditorFocused) { newValue in
                 if !newValue && controller.focusAttachmentOnTextEditorUnfocus {
                     controller.focusAttachment()
                 }
             }
+            #endif
+        }
+        
+        private var thumbnailSize: CGFloat {
+            #if os(visionOS)
+            120
+            #else
+            80
+            #endif
         }
         
         @ViewBuilder
@@ -208,6 +224,7 @@ extension AttachmentRowController {
 
 private extension View {
     @available(iOS, obsoleted: 16.0)
+    @available(visionOS 1.0, *)
     @ViewBuilder
     func contextMenu<M: View, P: View>(@ViewBuilder menuItems: () -> M, @ViewBuilder previewIfAvailable preview: () -> P) -> some View {
         if #available(iOS 16.0, *) {

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentThumbnailController.swift

@@ -40,9 +40,14 @@ class AttachmentThumbnailController: ViewController {
             case .video, .gifv:
                 let asset = AVURLAsset(url: url)
                 let imageGenerator = AVAssetImageGenerator(asset: asset)
+                imageGenerator.appliesPreferredTrackTransform = true
+                #if os(visionOS)
+                #warning("Use async AVAssetImageGenerator.image(at:)")
+                #else
                 if let cgImage = try? imageGenerator.copyCGImage(at: .zero, actualTime: nil) {
                     self.image = UIImage(cgImage: cgImage)
                 }
+                #endif
 
             case .audio, .unknown:
                 break
@@ -87,9 +92,14 @@ class AttachmentThumbnailController: ViewController {
             if type.conforms(to: .movie) {
                 let asset = AVURLAsset(url: url)
                 let imageGenerator = AVAssetImageGenerator(asset: asset)
+                imageGenerator.appliesPreferredTrackTransform = true
+                #if os(visionOS)
+                #warning("Use async AVAssetImageGenerator.image(at:)")
+                #else
                 if let cgImage = try? imageGenerator.copyCGImage(at: .zero, actualTime: nil) {
                     self.image = UIImage(cgImage: cgImage)
                 }
+                #endif
             } else if let data = try? Data(contentsOf: url) {
                 if type == .gif {
                     self.gifController = GIFController(gifData: data)

Packages/ComposeUI/Sources/ComposeUI/Controllers/AttachmentsListController.swift

@@ -85,8 +85,11 @@ class AttachmentsListController: ViewController {
         for provider in itemProviders where provider.canLoadObject(ofClass: DraftAttachment.self) {
             provider.loadObject(ofClass: DraftAttachment.self) { object, error in
                 guard let attachment = object as? DraftAttachment else { return }
-                DispatchQueue.main.async {
-                    guard self.canAddAttachment else { return }
+                DispatchQueue.main.async { [weak self] in
+                    guard let self,
+                          self.canAddAttachment else {
+                        return
+                    }
                     DraftsPersistentContainer.shared.viewContext.insert(attachment)
                     attachment.draft = self.draft
                     self.draft.attachments.add(attachment)
@@ -131,9 +134,9 @@ class AttachmentsListController: ViewController {
         @Environment(\.horizontalSizeClass) private var horizontalSizeClass
         
         var body: some View {
+            attachmentsList
+            
             Group {
-                attachmentsList
-                
                 if controller.parent.config.presentAssetPicker != nil {
                     addImageButton
                         .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
@@ -147,6 +150,10 @@ class AttachmentsListController: ViewController {
                 togglePollButton
                     .listRowInsets(EdgeInsets(top: cellPadding / 2, leading: cellPadding / 2, bottom: cellPadding / 2, trailing: cellPadding / 2))
             }
+            #if os(visionOS)
+            .buttonStyle(.bordered)
+            .labelStyle(AttachmentButtonLabelStyle())
+            #endif
         }
         
         private var attachmentsList: some View {
@@ -246,3 +253,11 @@ fileprivate struct SheetOrPopover<V: View>: ViewModifier {
         }
     }
 }
+
+@available(visionOS 1.0, *)
+fileprivate struct AttachmentButtonLabelStyle: LabelStyle {
+    func makeBody(configuration: Configuration) -> some View {
+        DefaultLabelStyle().makeBody(configuration: configuration)
+            .foregroundStyle(.white)
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteEmojisController.swift

@@ -8,6 +8,7 @@
 import SwiftUI
 import Pachyderm
 import Combine
+import TuskerComponents
 
 class AutocompleteEmojisController: ViewController {
     unowned let composeController: ComposeController
@@ -36,19 +37,15 @@ class AutocompleteEmojisController: ViewController {
             .removeDuplicates()
             .sink { [unowned self] query in
                 self.searchTask?.cancel()
-                self.searchTask = Task {
-                    await self.queryChanged(query)
+                self.searchTask = Task { [weak self] in
+                    await self?.queryChanged(query)
                 }
             }
     }
     
     @MainActor
     private func queryChanged(_ query: String) async {
-        var emojis = await withCheckedContinuation { continuation in
-            composeController.mastodonController.getCustomEmojis {
-                continuation.resume(returning: $0)
-            }
-        }
+        var emojis = await composeController.mastodonController.getCustomEmojis()
         guard !Task.isCancelled else {
             return
         }

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteHashtagsController.swift

@@ -8,6 +8,7 @@
 import SwiftUI
 import Combine
 import Pachyderm
+import TuskerComponents
 
 class AutocompleteHashtagsController: ViewController {
     unowned let composeController: ComposeController
@@ -34,8 +35,8 @@ class AutocompleteHashtagsController: ViewController {
             .debounce(for: .milliseconds(250), scheduler: DispatchQueue.main)
             .sink { [unowned self] query in
                 self.searchTask?.cancel()
-                self.searchTask = Task {
-                    await self.queryChanged(query)
+                self.searchTask = Task { [weak self] in
+                    await self?.queryChanged(query)
                 }
             }
     }

Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteMentionsController.swift

@@ -36,8 +36,9 @@ class AutocompleteMentionsController: ViewController {
             .debounce(for: .milliseconds(250), scheduler: DispatchQueue.main)
             .sink { [unowned self] query in
                 self.searchTask?.cancel()
-                self.searchTask = Task {
-                    await self.queryChanged(query)
+                // weak in case the autocomplete controller is dealloc'd racing with the task starting
+                self.searchTask = Task { [weak self] in
+                    await self?.queryChanged(query)
                 }
             }
     }

Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift

@@ -20,7 +20,11 @@ public final class ComposeController: ViewController {
     public typealias ReplyContentView = (any StatusProtocol, @escaping (CGFloat) -> Void) -> AnyView
     public typealias EmojiImageView = (Emoji) -> AnyView
     
-    @Published public private(set) var draft: Draft
+    @Published public private(set) var draft: Draft {
+        didSet {
+            assert(draft.managedObjectContext == DraftsPersistentContainer.shared.viewContext)
+        }
+    }
     @Published public var config: ComposeUIConfig
     @Published public var mastodonController: ComposeMastodonContext
     let fetchAvatar: AvatarImageView.FetchAvatar
@@ -58,7 +62,7 @@ public final class ComposeController: ViewController {
     private var isDisappearing = false
     private var userConfirmedDelete = false
     
-    var isPosting: Bool {
+    public var isPosting: Bool {
         poster != nil
     }
     
@@ -106,6 +110,7 @@ public final class ComposeController: ViewController {
         emojiImageView: @escaping EmojiImageView
     ) {
         self.draft = draft
+        assert(draft.managedObjectContext == DraftsPersistentContainer.shared.viewContext)
         self.config = config
         self.mastodonController = mastodonController
         self.fetchAvatar = fetchAvatar
@@ -270,7 +275,9 @@ public final class ComposeController: ViewController {
         @OptionalObservedObject var poster: PostService?
         @EnvironmentObject var controller: ComposeController
         @EnvironmentObject var draft: Draft
+        #if !os(visionOS)
         @StateObject private var keyboardReader = KeyboardReader()
+        #endif
         @State private var globalFrameOutsideList = CGRect.zero
         
         init(poster: PostService?) {
@@ -313,16 +320,25 @@ public final class ComposeController: ViewController {
                             .transition(.move(edge: .bottom))
                             .animation(.default, value: controller.currentInput?.autocompleteState)
                         
+                        #if !os(visionOS)
                         ControllerView(controller: { controller.toolbarController })
+                        #endif
                     }
+                    #if !os(visionOS)
                     // on iPadOS15, the toolbar ends up below the keyboard's toolbar without this
                     .padding(.bottom, keyboardInset)
+                    #endif
                     .transition(.move(edge: .bottom))
                 }
             }
             .toolbar {
                 ToolbarItem(placement: .cancellationAction) { cancelButton }
                 ToolbarItem(placement: .confirmationAction) { postButton }
+                #if os(visionOS)
+                ToolbarItem(placement: .bottomOrnament) {
+                    ControllerView(controller: { controller.toolbarController })
+                }
+                #endif
             }
             .background(GeometryReader { proxy in
                 Color.clear
@@ -414,7 +430,9 @@ public final class ComposeController: ViewController {
                     .listRowBackground(config.backgroundColor)
             }
             .listStyle(.plain)
+            #if !os(visionOS)
             .scrollDismissesKeyboardInteractivelyIfAvailable()
+            #endif
             .disabled(controller.isPosting)
         }
         
@@ -424,6 +442,7 @@ public final class ComposeController: ViewController {
                     // otherwise all Buttons in the nav bar are made semibold
                     .font(.system(size: 17, weight: .regular))
             }
+            .disabled(controller.isPosting)
             .confirmationDialog("Are you sure?", isPresented: $controller.isShowingSaveDraftSheet) {
                 // edit drafts can't be saved
                 if draft.editedStatusID == nil {
@@ -456,6 +475,7 @@ public final class ComposeController: ViewController {
             }
         }
         
+        #if !os(visionOS)
         @available(iOS, obsoleted: 16.0)
         private var keyboardInset: CGFloat {
             if #unavailable(iOS 16.0),
@@ -466,6 +486,7 @@ public final class ComposeController: ViewController {
                 return 0
             }
         }
+        #endif
     }
 }
 

Packages/ComposeUI/Sources/ComposeUI/Controllers/PollController.swift

@@ -34,11 +34,16 @@ class PollController: ViewController {
     }
     
     private func moveOptions(indices: IndexSet, newIndex: Int) {
-        poll.options.moveObjects(at: indices, to: newIndex)
+        // see AttachmentsListController.moveAttachments
+        var array = poll.pollOptions
+        array.move(fromOffsets: indices, toOffset: newIndex)
+        poll.options = NSMutableOrderedSet(array: array)
     }
     
     private func removeOption(_ option: PollOption) {
-        poll.options.remove(option)
+        var array = poll.pollOptions
+        array.remove(at: poll.options.index(of: option))
+        poll.options = NSMutableOrderedSet(array: array)
     }
     
     private var canAddOption: Bool {
@@ -123,9 +128,15 @@ class PollController: ViewController {
                 RoundedRectangle(cornerRadius: 10, style: .continuous)
                     .foregroundColor(backgroundColor)
             )
+            #if os(visionOS)
+            .onChange(of: controller.duration) {
+                poll.duration = controller.duration.timeInterval
+            }
+            #else
             .onChange(of: controller.duration) { newValue in
                 poll.duration = newValue.timeInterval
             }
+            #endif
         }
         
         private var backgroundColor: Color {

Packages/ComposeUI/Sources/ComposeUI/Controllers/ToolbarController.swift

@@ -11,9 +11,6 @@ import TuskerComponents
 
 class ToolbarController: ViewController {
     static let height: CGFloat = 44
-    private static let visibilityOptions: [MenuPicker<Pachyderm.Visibility>.Option] = Pachyderm.Visibility.allCases.map { vis in
-            .init(value: vis, title: vis.displayName, subtitle: vis.subtitle, image: UIImage(systemName: vis.unfilledImageName), accessibilityLabel: "Visibility: \(vis.displayName)")
-    }
     
     unowned let parent: ComposeController
     
@@ -48,54 +45,26 @@ class ToolbarController: ViewController {
         @EnvironmentObject private var composeController: ComposeController
         @ScaledMetric(relativeTo: .body) private var imageSize: CGFloat = 22
         
+        #if !os(visionOS)
         @State private var minWidth: CGFloat?
         @State private var realWidth: CGFloat?
+        #endif
         
         var body: some View {
+            #if os(visionOS)
+            buttons
+            #else
             ScrollView(.horizontal, showsIndicators: false) {
-                HStack(spacing: 0) {
-                    cwButton
-                    
-                    MenuPicker(selection: $draft.visibility, options: ToolbarController.visibilityOptions, buttonStyle: .iconOnly)
-                    // the button has a bunch of extra space by default, but combined with what we add it's too much
-                        .padding(.horizontal, -8)
-                        .disabled(draft.editedStatusID != nil)
-                    
-                    if composeController.mastodonController.instanceFeatures.localOnlyPosts {
-                        localOnlyPicker
-                            .padding(.horizontal, -8)
-                            .disabled(draft.editedStatusID != nil)
-                    }
-                    
-                    if let currentInput = composeController.currentInput,
-                       currentInput.toolbarElements.contains(.emojiPicker) {
-                        customEmojiButton
-                    }
-                    
-                    if let currentInput = composeController.currentInput,
-                       currentInput.toolbarElements.contains(.formattingButtons),
-                       composeController.config.contentType != .plain {
-                        
-                        Spacer()
-                        formatButtons
-                    }
-                    
-                    Spacer()
-                    
-                    if #available(iOS 16.0, *),
-                       composeController.mastodonController.instanceFeatures.createStatusWithLanguage {
-                        LanguagePicker(draftLanguage: $draft.language, hasChangedSelection: $composeController.hasChangedLanguageSelection)
-                    }
-                }
-                .padding(.horizontal, 16)
-                .frame(minWidth: minWidth)
-                .background(GeometryReader { proxy in
-                    Color.clear
-                        .preference(key: ToolbarWidthPrefKey.self, value: proxy.size.width)
-                        .onPreferenceChange(ToolbarWidthPrefKey.self) { width in
-                            realWidth = width
-                        }
-                })
+                buttons
+                    .padding(.horizontal, 16)
+                    .frame(minWidth: minWidth)
+                    .background(GeometryReader { proxy in
+                        Color.clear
+                            .preference(key: ToolbarWidthPrefKey.self, value: proxy.size.width)
+                            .onPreferenceChange(ToolbarWidthPrefKey.self) { width in
+                                realWidth = width
+                            }
+                    })
             }
             .scrollDisabledIfAvailable(realWidth ?? 0 <= minWidth ?? 0)
             .frame(height: ToolbarController.height)
@@ -112,6 +81,52 @@ class ToolbarController: ViewController {
                         minWidth = width
                     }
             })
+            #endif
+        }
+        
+        @ViewBuilder
+        private var buttons: some View {
+            HStack(spacing: 0) {
+                cwButton
+                
+                MenuPicker(selection: visibilityBinding, options: visibilityOptions, buttonStyle: .iconOnly)
+                    #if !targetEnvironment(macCatalyst) && !os(visionOS)
+                    // the button has a bunch of extra space by default, but combined with what we add it's too much
+                    .padding(.horizontal, -8)
+                    #endif
+                    .disabled(draft.editedStatusID != nil)
+                    .disabled(composeController.mastodonController.instanceFeatures.localOnlyPostsVisibility && draft.localOnly)
+                
+                if composeController.mastodonController.instanceFeatures.localOnlyPosts {
+                    localOnlyPicker
+                        #if targetEnvironment(macCatalyst)
+                        .padding(.leading, 4)
+                        #elseif !os(visionOS)
+                        .padding(.horizontal, -8)
+                        #endif
+                        .disabled(draft.editedStatusID != nil)
+                }
+                
+                if let currentInput = composeController.currentInput,
+                   currentInput.toolbarElements.contains(.emojiPicker) {
+                    customEmojiButton
+                }
+                
+                if let currentInput = composeController.currentInput,
+                   currentInput.toolbarElements.contains(.formattingButtons),
+                   composeController.config.contentType != .plain {
+                    
+                    Spacer()
+                    formatButtons
+                }
+                
+                Spacer()
+                
+                if #available(iOS 16.0, *),
+                   composeController.mastodonController.instanceFeatures.createStatusWithLanguage {
+                    LanguagePicker(draftLanguage: $draft.language, hasChangedSelection: $composeController.hasChangedLanguageSelection)
+                }
+            }
         }
         
         private var cwButton: some View {
@@ -121,6 +136,29 @@ class ToolbarController: ViewController {
                 .hoverEffect()
         }
         
+        private var visibilityBinding: Binding<Pachyderm.Visibility> {
+            // On instances that conflate visibliity and local only, we still show two separate controls but don't allow
+            // changing the visibility when local-only.
+            if draft.localOnly,
+               composeController.mastodonController.instanceFeatures.localOnlyPostsVisibility {
+                return .constant(.public)
+            } else {
+                return $draft.visibility
+            }
+        }
+        
+        private var visibilityOptions: [MenuPicker<Pachyderm.Visibility>.Option] {
+            let visibilities: [Pachyderm.Visibility]
+            if !composeController.mastodonController.instanceFeatures.composeDirectStatuses {
+                visibilities = [.public, .unlisted, .private]
+            } else {
+                visibilities = Pachyderm.Visibility.allCases
+            }
+            return visibilities.map { vis in
+                    .init(value: vis, title: vis.displayName, subtitle: vis.subtitle, image: UIImage(systemName: vis.unfilledImageName), accessibilityLabel: "Visibility: \(vis.displayName)")
+            }
+        }
+        
         private var localOnlyPicker: some View {
             let domain = composeController.mastodonController.accountInfo!.instanceURL.host!
             return MenuPicker(selection: $draft.localOnly, options: [
@@ -143,13 +181,8 @@ class ToolbarController: ViewController {
         private var formatButtons: some View {
             ForEach(StatusFormat.allCases, id: \.rawValue) { format in
                 Button(action: controller.formatAction(format)) {
-                    if let imageName = format.imageName {
-                        Image(systemName: imageName)
-                            .font(.system(size: imageSize))
-                    } else if let (str, attrs) = format.title {
-                        let container = try! AttributeContainer(attrs, including: \.uiKit)
-                        Text(AttributedString(str, attributes: container))
-                    }
+                    Image(systemName: format.imageName)
+                        .font(.system(size: imageSize))
                 }
                 .accessibilityLabel(format.accessibilityLabel)
                 .padding(5)

Packages/ComposeUI/Sources/ComposeUI/CoreData/Draft.swift

@@ -25,6 +25,7 @@ public class Draft: NSManagedObject, Identifiable {
     @NSManaged public var contentWarningEnabled: Bool
     @NSManaged public var editedStatusID: String?
     @NSManaged public var id: UUID
+    @NSManaged public var initialContentWarning: String?
     @NSManaged public var initialText: String
     @NSManaged public var inReplyToID: String?
     @NSManaged public var language: String? // ISO 639 language code
@@ -65,7 +66,7 @@ public class Draft: NSManagedObject, Identifiable {
 extension Draft {
     public var hasContent: Bool {
         (!text.isEmpty && text != initialText) ||
-            (contentWarningEnabled && !contentWarning.isEmpty) ||
+            (contentWarningEnabled && !contentWarning.isEmpty && contentWarning != initialContentWarning) ||
             attachments.count > 0 ||
             poll?.hasContent == true
     }

Packages/ComposeUI/Sources/ComposeUI/CoreData/DraftAttachment.swift

@@ -137,6 +137,8 @@ extension DraftAttachment {
 //private let attachmentTypeIdentifier = "space.vaccor.Tusker.composition-attachment"
 
 private let imageType = UTType.image.identifier
+private let heifType = UTType.heif.identifier
+private let heicType = UTType.heic.identifier
 private let jpegType = UTType.jpeg.identifier
 private let pngType = UTType.png.identifier
 private let mp4Type = UTType.mpeg4Movie.identifier
@@ -148,17 +150,18 @@ extension DraftAttachment: NSItemProviderReading {
         // todo: is there a better way of handling movies than manually adding all possible UTI types?
         // just using kUTTypeMovie doesn't work, because we need the actually type in order to get the file extension
         // without the file extension, getting the thumbnail and exporting the video for attachment upload fails
-        [/*typeIdentifier, */ gifType, jpegType, pngType, imageType, mp4Type, quickTimeType]
+        [/*typeIdentifier, */ gifType, heifType, heicType, jpegType, pngType, imageType, mp4Type, quickTimeType]
     }
     
     public static func object(withItemProviderData data: Data, typeIdentifier: String) throws -> DraftAttachment {
         var data = data
         var type = UTType(typeIdentifier)!
         
-        // this seems to only occur when the item is a UIImage, rather than just image data,
-        // which seems to only occur when sharing a screenshot directly from the markup screen
+        // the type is .image in certain circumstances:
+        // - macOS: image copied from macOS Safari -> only UIImage(data: data) works
+        // - iOS: sharing screenshot from markup -> only NSKeyedUnarchiver works
         if type == .image,
-           let image = try? NSKeyedUnarchiver.unarchivedObject(ofClass: UIImage.self, from: data),
+           let image = UIImage(data: data) ?? (try? NSKeyedUnarchiver.unarchivedObject(ofClass: UIImage.self, from: data)),
            let pngData = image.pngData() {
             data = pngData
             type = .png
@@ -216,7 +219,7 @@ extension DraftAttachment {
                 options.isNetworkAccessAllowed = true
                 PHImageManager.default().requestExportSession(forVideo: asset, options: options, exportPreset: AVAssetExportPresetHighestQuality) { exportSession, info in
                     if let exportSession {
-                        Self.exportVideoData(session: exportSession, completion: completion)
+                        Self.exportVideoData(session: exportSession, features: features, completion: completion)
                     } else if let error = info?[PHImageErrorKey] as? Error {
                         completion(.failure(.videoExport(error)))
                     } else {
@@ -242,7 +245,7 @@ extension DraftAttachment {
                     completion(.failure(.noVideoExportSession))
                     return
                 }
-                Self.exportVideoData(session: session, completion: completion)
+                Self.exportVideoData(session: session, features: features, completion: completion)
             } else {
                 let fileData: Data
                 do {
@@ -273,20 +276,13 @@ extension DraftAttachment {
         var data = data
         var type = type
         
-        if type != .png && type != .jpeg,
-           let image = UIImage(data: data) {
-            // The quality of 0.8 was chosen completely arbitrarily, it may need to be tuned in the future.
-            data = image.jpegData(compressionQuality: 0.8)!
-            type = .jpeg
-        }
-        
         let image = CIImage(data: data)!
         let needsColorSpaceConversion = features.needsWideColorGamutHack && image.colorSpace?.name != CGColorSpace.sRGB
         
         // neither Mastodon nor Pleroma handles HEIC well, so convert to JPEG
         // they also do a bad job converting wide color gamut images (they seem to just drop the profile, letting the wide-gamut values be reinterprete as sRGB)
         // if that changes in the future, we'll need to pass the InstanceFeatures in here somehow and gate the conversion
-        if needsColorSpaceConversion || type == .heic {
+        if needsColorSpaceConversion || type == .heic || type == .heif {
             let context = CIContext()
             let colorSpace = needsColorSpaceConversion || image.colorSpace != nil ? CGColorSpace(name: CGColorSpace.sRGB)! : image.colorSpace!
             if type == .png {
@@ -300,9 +296,12 @@ extension DraftAttachment {
         return (data, type)
     }
     
-    private static func exportVideoData(session: AVAssetExportSession, completion: @escaping (Result<(Data, UTType), ExportError>) -> Void) {
+    private static func exportVideoData(session: AVAssetExportSession, features: InstanceFeatures, completion: @escaping (Result<(Data, UTType), ExportError>) -> Void) {
         session.outputFileType = .mp4
         session.outputURL = FileManager.default.temporaryDirectory.appendingPathComponent("exported_video_\(UUID())").appendingPathExtension("mp4")
+        if let configuration = features.mediaAttachmentsConfiguration {
+            session.fileLengthLimit = Int64(configuration.videoSizeLimit)
+        }
         session.exportAsynchronously {
             guard session.status == .completed else {
                 completion(.failure(.videoExport(session.error!)))

Packages/ComposeUI/Sources/ComposeUI/CoreData/Drafts.xcdatamodeld/Drafts.xcdatamodel/contents

@@ -1,11 +1,12 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="21754" systemVersion="22D49" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="22222" systemVersion="22G91" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="Draft" representedClassName="ComposeUI.Draft" syncable="YES">
         <attribute name="accountID" attributeType="String"/>
         <attribute name="contentWarning" attributeType="String" defaultValueString=""/>
         <attribute name="contentWarningEnabled" attributeType="Boolean" defaultValueString="NO" usesScalarValueType="YES"/>
         <attribute name="editedStatusID" optional="YES" attributeType="String"/>
         <attribute name="id" attributeType="UUID" usesScalarValueType="NO"/>
+        <attribute name="initialContentWarning" optional="YES" attributeType="String"/>
         <attribute name="initialText" attributeType="String"/>
         <attribute name="inReplyToID" optional="YES" attributeType="String"/>
         <attribute name="language" optional="YES" attributeType="String"/>
@@ -38,7 +39,4 @@
         <attribute name="text" attributeType="String" defaultValueString=""/>
         <relationship name="poll" optional="YES" maxCount="1" deletionRule="Nullify" destinationEntity="Poll" inverseName="options" inverseEntity="Poll"/>
     </entity>
-    <entity name="TestEntity" representedClassName="TestEntity" syncable="YES" codeGenerationType="class">
-        <attribute name="id" optional="YES" attributeType="UUID" usesScalarValueType="NO"/>
-    </entity>
 </model>

Packages/ComposeUI/Sources/ComposeUI/CoreData/DraftsPersistentContainer.swift

@@ -81,6 +81,7 @@ public class DraftsPersistentContainer: NSPersistentContainer {
         contentWarning: String,
         inReplyToID: String?,
         visibility: Visibility,
+        language: String?,
         localOnly: Bool
     ) -> Draft {
         let draft = Draft(context: viewContext)
@@ -88,9 +89,11 @@ public class DraftsPersistentContainer: NSPersistentContainer {
         draft.text = text
         draft.initialText = text
         draft.contentWarning = contentWarning
+        draft.initialContentWarning = contentWarning
         draft.contentWarningEnabled = !contentWarning.isEmpty
         draft.inReplyToID = inReplyToID
         draft.visibility = visibility
+        draft.language = language
         draft.localOnly = localOnly
         save()
         return draft
@@ -112,6 +115,7 @@ public class DraftsPersistentContainer: NSPersistentContainer {
         draft.initialText = source.text
         draft.contentWarning = source.spoilerText
         draft.contentWarningEnabled = !source.spoilerText.isEmpty
+        draft.initialContentWarning = source.spoilerText
         draft.inReplyToID = inReplyToID
         draft.visibility = visibility
         draft.localOnly = localOnly

Packages/ComposeUI/Sources/ComposeUI/KeyboardReader.swift

@@ -5,6 +5,8 @@
 //  Created by Shadowfacts on 3/7/23.
 //
 
+#if !os(visionOS)
+
 import UIKit
 import Combine
 
@@ -37,3 +39,5 @@ class KeyboardReader: ObservableObject {
         }
     }
 }
+
+#endif

Packages/ComposeUI/Sources/ComposeUI/Model/AttachmentData.swift

@@ -1,278 +0,0 @@
-//
-//  AttachmentData.swift
-//  ComposeUI
-//
-//  Created by Shadowfacts on 1/1/20.
-//  Copyright © 2020 Shadowfacts. All rights reserved.
-//
-
-import UIKit
-import Photos
-import UniformTypeIdentifiers
-import PencilKit
-import InstanceFeatures
-
-enum AttachmentData {
-    case asset(PHAsset)
-    case image(Data, originalType: UTType)
-    case video(URL)
-    case drawing(PKDrawing)
-    case gif(Data)
-    
-    var type: AttachmentType {
-        switch self {
-        case let .asset(asset):
-            return asset.attachmentType!
-        case .image(_, originalType: _):
-            return .image
-        case .video(_):
-            return .video
-        case .drawing(_):
-            return .image
-        case .gif(_):
-            return .image
-        }
-    }
-    
-    var isAsset: Bool {
-        switch self {
-        case .asset(_):
-            return true
-        default:
-            return false
-        }
-    }
-    
-    var canSaveToDraft: Bool {
-        switch self {
-        case .video(_):
-            return false
-        default:
-            return true
-        }
-    }
-    
-    func getData(features: InstanceFeatures, skipAllConversion: Bool = false, completion: @escaping (Result<(Data, UTType), Error>) -> Void) {
-        switch self {
-        case let .image(originalData, originalType):
-            let data: Data
-            let type: UTType
-            switch originalType {
-            case .png, .jpeg:
-                data = originalData
-                type =  originalType
-            default:
-                let image = UIImage(data: originalData)!
-                // The quality of 0.8 was chosen completely arbitrarily, it may need to be tuned in the future.
-                data = image.jpegData(compressionQuality: 0.8)!
-                type = .jpeg
-            }
-            let processed = processImageData(data, type: type, features: features, skipAllConversion: skipAllConversion)
-            completion(.success(processed))
-        case let .asset(asset):
-            if asset.mediaType == .image {
-                let options = PHImageRequestOptions()
-                options.version = .current
-                options.deliveryMode = .highQualityFormat
-                options.resizeMode = .none
-                options.isNetworkAccessAllowed = true
-                PHImageManager.default().requestImageDataAndOrientation(for: asset, options: options) { (data, dataUTI, orientation, info) in
-                    guard let data = data, let dataUTI = dataUTI else {
-                        completion(.failure(.missingData))
-                        return
-                    }
-                    let processed = processImageData(data, type: UTType(dataUTI)!, features: features, skipAllConversion: skipAllConversion)
-                    completion(.success(processed))
-                }
-            } else if asset.mediaType == .video {
-                let options = PHVideoRequestOptions()
-                options.deliveryMode = .automatic
-                options.isNetworkAccessAllowed = true
-                options.version = .current
-                PHImageManager.default().requestExportSession(forVideo: asset, options: options, exportPreset: AVAssetExportPresetHighestQuality) { (exportSession, info) in
-                    if let exportSession = exportSession {
-                        AttachmentData.exportVideoData(session: exportSession, completion: completion)
-                    } else if let error = info?[PHImageErrorKey] as? Error {
-                        completion(.failure(.videoExport(error)))
-                    } else {
-                        completion(.failure(.noVideoExportSession))
-                    }
-                }
-            } else {
-                fatalError("assetType must be either image or video")
-            }
-        case let .video(url):
-            let asset = AVURLAsset(url: url)
-            guard let session = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality) else {
-                completion(.failure(.noVideoExportSession))
-                return
-            }
-            AttachmentData.exportVideoData(session: session, completion: completion)
-            
-        case let .drawing(drawing):
-            let image = drawing.imageInLightMode(from: drawing.bounds, scale: 1)
-            completion(.success((image.pngData()!, .png)))
-        case let .gif(data):
-            completion(.success((data, .gif)))
-        }
-    }
-    
-    private func processImageData(_ data: Data, type: UTType, features: InstanceFeatures, skipAllConversion: Bool) -> (Data, UTType) {
-        guard !skipAllConversion else {
-            return (data, type)
-        }
-        
-        var data = data
-        var type = type
-        let image = CIImage(data: data)!
-        let needsColorSpaceConversion = features.needsWideColorGamutHack && image.colorSpace?.name != CGColorSpace.sRGB
-        
-        // neither Mastodon nor Pleroma handles HEIC well, so convert to JPEG
-        // they also do a bad job converting wide color gamut images (they seem to just drop the profile, letting the wide-gamut values be reinterprete as sRGB)
-        // if that changes in the future, we'll need to pass the InstanceFeatures in here somehow and gate the conversion
-        if needsColorSpaceConversion || type == .heic {
-            let context = CIContext()
-            let colorSpace = needsColorSpaceConversion || image.colorSpace != nil ? CGColorSpace(name: CGColorSpace.sRGB)! : image.colorSpace!
-            if type == .png {
-                data = context.pngRepresentation(of: image, format: .ARGB8, colorSpace: colorSpace)!
-            } else {
-                data = context.jpegRepresentation(of: image, colorSpace: colorSpace)!
-                type = .jpeg
-            }
-        }
-        
-        return (data, type)
-    }
-    
-    private static func exportVideoData(session: AVAssetExportSession, completion: @escaping (Result<(Data, UTType), Error>) -> Void) {
-        session.outputFileType = .mp4
-        session.outputURL = FileManager.default.temporaryDirectory.appendingPathComponent("exported_video_\(UUID())").appendingPathExtension("mp4")
-        session.exportAsynchronously {
-            guard session.status == .completed else {
-                completion(.failure(.videoExport(session.error!)))
-                return
-            }
-            do {
-                let data = try Data(contentsOf: session.outputURL!)
-                completion(.success((data, .mpeg4Movie)))
-            } catch {
-                completion(.failure(.videoExport(error)))
-            }
-        }
-    }
-    
-    enum AttachmentType {
-        case image, video
-    }
-    
-    enum Error: Swift.Error, LocalizedError {
-        case missingData
-        case videoExport(Swift.Error)
-        case noVideoExportSession
-        
-        var localizedDescription: String {
-            switch self {
-            case .missingData:
-                return "Missing Data"
-            case .videoExport(let error):
-                return "Exporting video: \(error)"
-            case .noVideoExportSession:
-                return "Couldn't create video export session"
-            }
-        }
-    }
-}
-
-extension PHAsset {
-    var attachmentType: AttachmentData.AttachmentType? {
-        switch self.mediaType {
-        case .image:
-            return .image
-        case .video:
-            return .video
-        default:
-            return nil
-        }
-    }
-}
-
-extension AttachmentData: Codable {
-    func encode(to encoder: Encoder) throws {
-        var container = encoder.container(keyedBy: CodingKeys.self)
-        
-        switch self {
-        case let .asset(asset):
-            try container.encode("asset", forKey: .type)
-            try container.encode(asset.localIdentifier, forKey: .assetIdentifier)
-        case let .image(originalData, originalType):
-            try container.encode("image", forKey: .type)
-            try container.encode(originalType, forKey: .imageType)
-            try container.encode(originalData, forKey: .imageData)
-        case .video(_):
-            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: encoder.codingPath, debugDescription: "video CompositionAttachments cannot be encoded"))
-        case let .drawing(drawing):
-            try container.encode("drawing", forKey: .type)
-            let drawingData = drawing.dataRepresentation()
-            try container.encode(drawingData, forKey: .drawing)
-        case .gif(_):
-            throw EncodingError.invalidValue(self, EncodingError.Context(codingPath: encoder.codingPath, debugDescription: "gif CompositionAttachments cannot be encoded"))
-        }
-    }
-    
-    init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        
-        switch try container.decode(String.self, forKey: .type) {
-        case "asset":
-            let identifier = try container.decode(String.self, forKey: .assetIdentifier)
-            guard let asset = PHAsset.fetchAssets(withLocalIdentifiers: [identifier], options: nil).firstObject else {
-                throw DecodingError.dataCorruptedError(forKey: .assetIdentifier, in: container, debugDescription: "Could not fetch asset with local identifier")
-            }
-            self = .asset(asset)
-        case "image":
-            let data = try container.decode(Data.self, forKey: .imageData)
-            if let type = try container.decodeIfPresent(UTType.self, forKey: .imageType) {
-                self = .image(data, originalType: type)
-            } else {
-                guard let image = UIImage(data: data) else {
-                    throw DecodingError.dataCorruptedError(forKey: .imageData, in: container, debugDescription: "CompositionAttachment data could not be decoded into UIImage")
-                }
-                let jpegData = image.jpegData(compressionQuality: 1)!
-                self = .image(jpegData, originalType: .jpeg)
-            }
-        case "drawing":
-            let drawingData = try container.decode(Data.self, forKey: .drawing)
-            let drawing = try PKDrawing(data: drawingData)
-            self = .drawing(drawing)
-        default:
-            throw DecodingError.dataCorruptedError(forKey: .type, in: container, debugDescription: "CompositionAttachment type must be one of image, asset, or drawing")
-        }
-    }
-    
-    enum CodingKeys: CodingKey {
-        case type
-        case imageData
-        case imageType
-        /// The local identifier of the PHAsset for this attachment
-        case assetIdentifier
-        /// The PKDrawing object for this attachment.
-        case drawing
-    }
-}
-
-extension AttachmentData: Equatable {
-    static func ==(lhs: AttachmentData, rhs: AttachmentData) -> Bool {
-        switch (lhs, rhs) {
-        case let (.asset(a), .asset(b)):
-            return a.localIdentifier == b.localIdentifier
-        case let (.image(a, originalType: aType), .image(b, originalType: bType)):
-            return a == b && aType == bType
-        case let (.video(a), .video(b)):
-            return a == b
-        case let (.drawing(a), .drawing(b)):
-            return a == b
-        default:
-            return false
-        }
-    }
-}

Packages/ComposeUI/Sources/ComposeUI/Model/StatusFormat.swift

@@ -23,7 +23,7 @@ enum StatusFormat: Int, CaseIterable {
         }
     }
     
-    var imageName: String? {
+    var imageName: String {
         switch self {
         case .italics:
             return "italic"
@@ -31,16 +31,8 @@ enum StatusFormat: Int, CaseIterable {
             return "bold"
         case .strikethrough:
             return "strikethrough"
-        default:
-            return nil
-        }
-    }
-    
-    var title: (String, [NSAttributedString.Key: Any])? {
-        if self == .code {
-            return ("</>", [.font: UIFont(name: "Menlo", size: 17)!])
-        } else {
-            return nil
+        case .code:
+            return "chevron.left.forwardslash.chevron.right"
         }
     }
     

Packages/ComposeUI/Sources/ComposeUI/PKDrawing+Render.swift

@@ -11,7 +11,7 @@ import PencilKit
 
 extension PKDrawing {
     
-    func imageInLightMode(from rect: CGRect, scale: CGFloat = UIScreen.main.scale) -> UIImage {
+    func imageInLightMode(from rect: CGRect, scale: CGFloat = 1) -> UIImage {
         let lightTraitCollection = UITraitCollection(userInterfaceStyle: .light)
         var drawingImage: UIImage!
         lightTraitCollection.performAsCurrent {

Packages/ComposeUI/Sources/ComposeUI/TestView.swift

@@ -1,36 +0,0 @@
-//
-//  File.swift
-//  
-//
-//  Created by Shadowfacts on 4/22/23.
-//
-
-import SwiftUI
-
-struct TestView: View {
-    @State var manager = DraftsPersistentContainer()
-    
-    var body: some View {
-        VStack {
-            Button("Add") {
-                let entity = TestEntity(context: manager.viewContext)
-                entity.id = UUID()
-                try! manager.viewContext.save()
-            }
-            InnerView()
-                .environment(\.managedObjectContext, manager.viewContext)
-        }
-    }
-}
-
-struct InnerView: View {
-    @FetchRequest(sortDescriptors: []) var results: FetchedResults<TestEntity>
-    
-    var body: some View {
-        List {
-            ForEach(results) { result in
-                Text(result.id?.uuidString ?? "<nil>")
-            }
-        }
-    }
-}

Packages/ComposeUI/Sources/ComposeUI/View+ForwardsCompat.swift

@@ -8,6 +8,11 @@
 import SwiftUI
 
 extension View {
+    #if os(visionOS)
+    func scrollDisabledIfAvailable(_ disabled: Bool) -> some View {
+        self.scrollDisabled(disabled)
+    }
+    #else
     @available(iOS, obsoleted: 16.0)
     @ViewBuilder
     func scrollDisabledIfAvailable(_ disabled: Bool) -> some View {
@@ -17,4 +22,5 @@ extension View {
             self
         }
     }
+    #endif
 }

Packages/ComposeUI/Sources/ComposeUI/Views/AttachmentDescriptionTextView.swift

@@ -22,13 +22,21 @@ struct InlineAttachmentDescriptionView: View {
         self.minHeight = minHeight
     }
     
+    private var placeholderOffset: CGSize {
+        #if os(visionOS)
+        CGSize(width: 8, height: 8)
+        #else
+        CGSize(width: 4, height: 8)
+        #endif
+    }
+    
     var body: some View {
         ZStack(alignment: .topLeading) {
             if attachment.attachmentDescription.isEmpty {
                 placeholder
                     .font(.body)
                     .foregroundColor(.secondary)
-                    .offset(x: 4, y: 8)
+                    .offset(placeholderOffset)
             }
             
             WrappedTextView(
@@ -84,6 +92,10 @@ private struct WrappedTextView: UIViewRepresentable {
         view.font = .preferredFont(forTextStyle: .body)
         view.adjustsFontForContentSizeCategory = true
         view.textContainer.lineBreakMode = .byWordWrapping
+        #if os(visionOS)
+        view.borderStyle = .roundedRect
+        view.textContainerInset = UIEdgeInsets(top: 8, left: 4, bottom: 8, right: 4)
+        #endif
         return view
     }
     

Packages/ComposeUI/Sources/ComposeUI/Views/EmojiTextField.swift

@@ -52,12 +52,19 @@ struct EmojiTextField: UIViewRepresentable {
         if text != uiView.text {
             uiView.text = text
         }
+        if placeholder != uiView.attributedPlaceholder?.string {
+            uiView.attributedPlaceholder = NSAttributedString(string: placeholder, attributes: [
+                .foregroundColor: UIColor.secondaryLabel,
+            ])
+        }
         
         context.coordinator.text = $text
         context.coordinator.maxLength = maxLength
         context.coordinator.focusNextView = focusNextView
         
+        #if !os(visionOS)
         uiView.backgroundColor = colorScheme == .dark ? UIColor(controller.config.fillColor) : .secondarySystemBackground
+        #endif
         
         if becomeFirstResponder?.wrappedValue == true {
             DispatchQueue.main.async {

Packages/ComposeUI/Sources/ComposeUI/Views/LanguagePicker.swift

@@ -30,7 +30,13 @@ struct LanguagePicker: View {
         if maybeIso639Code.last == "-" {
             maybeIso639Code = maybeIso639Code[..<maybeIso639Code.index(before: maybeIso639Code.endIndex)]
         }
-        let code = Locale.LanguageCode(String(maybeIso639Code))
+        let identifier = String(maybeIso639Code)
+        // mul (for multiple languages) and unk (unknown) are ISO codes, but not ones that akkoma permits, so we ignore them on all platforms
+        guard identifier != "mul",
+              identifier != "und" else {
+            return nil
+        }
+        let code = Locale.LanguageCode(identifier)
         if code.isISOLanguage {
             return code
         } else {
@@ -39,13 +45,10 @@ struct LanguagePicker: View {
     }
     
     private var codeFromPreferredLanguages: Locale.LanguageCode? {
-        if let identifier = Locale.preferredLanguages.first {
-            let code = Locale.LanguageCode(identifier)
-            if code.isISOLanguage {
-                return code
-            } else {
-                return nil
-            }
+        if let identifier = Locale.preferredLanguages.first,
+           case let code = Locale.LanguageCode(identifier),
+           code.isISOLanguage {
+            return code
         } else {
             return nil
         }
@@ -66,6 +69,8 @@ struct LanguagePicker: View {
             Text((languageCode.wrappedValue.identifier(.alpha2) ?? languageCode.wrappedValue.identifier).uppercased())
         }
         .accessibilityLabel("Post Language")
+        .padding(5)
+        .hoverEffect()
         .sheet(isPresented: $isShowingSheet) {
             NavigationStack {
                 LanguagePickerList(languageCode: languageCode, hasChangedSelection: $hasChangedSelection, isPresented: $isShowingSheet)
@@ -124,7 +129,9 @@ private struct LanguagePickerList: View {
         .scrollContentBackground(.hidden)
         .background(groupedBackgroundColor.edgesIgnoringSafeArea(.all))
         .searchable(text: $query)
+        #if !os(visionOS)
         .scrollDismissesKeyboard(.interactively)
+        #endif
         .navigationTitle("Post Language")
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {
@@ -138,20 +145,32 @@ private struct LanguagePickerList: View {
             // make sure recents always contains the currently selected lang
             let recents = addRecentLang(languageCode)
             recentLangs = recents
+                .filter { $0 != "mul" && $0 != "und" }
                 .map { Lang(code: .init($0)) }
                 .sorted { $0.name < $1.name }
             
             langs = Locale.LanguageCode.isoLanguageCodes
+                .filter { $0.identifier != "mul" && $0.identifier != "und" }
                 .map { Lang(code: $0) }
                 .sorted { $0.name < $1.name }
         }
+        #if os(visionOS)
+        .onChange(of: query, initial: true) {
+            filteredLangsChanged(query: query)
+        }
+        #else
         .onChange(of: query) { newValue in
-            if newValue.isEmpty {
-                filteredLangs = nil
-            } else {
-                filteredLangs = langs.filter {
-                    $0.name.localizedCaseInsensitiveContains(newValue) || $0.code.identifier.localizedCaseInsensitiveContains(newValue)
-                }
+            filteredLangsChanged(query: newValue)
+        }
+        #endif
+    }
+    
+    private func filteredLangsChanged(query: String) {
+        if query.isEmpty {
+            filteredLangs = nil
+        } else {
+            filteredLangs = langs.filter {
+                $0.name.localizedCaseInsensitiveContains(query) || $0.code.identifier.localizedCaseInsensitiveContains(query)
             }
         }
     }

Packages/ComposeUI/Sources/ComposeUI/Views/MainTextView.swift

@@ -23,19 +23,41 @@ struct MainTextView: View {
         controller.config
     }
     
+    private var placeholderOffset: CGSize {
+        #if os(visionOS)
+        CGSize(width: 8, height: 8)
+        #else
+        CGSize(width: 4, height: 8)
+        #endif
+    }
+    
+    private var textViewBackgroundColor: UIColor? {
+        #if os(visionOS)
+        nil
+        #else
+        colorScheme == .dark ? UIColor(config.fillColor) : .secondarySystemBackground
+        #endif
+    }
+    
     var body: some View {
         ZStack(alignment: .topLeading) {
-            colorScheme == .dark ? config.fillColor : Color(uiColor: .secondarySystemBackground)
+            MainWrappedTextViewRepresentable(
+                text: $draft.text,
+                backgroundColor: textViewBackgroundColor,
+                becomeFirstResponder: $controller.mainComposeTextViewBecomeFirstResponder,
+                updateSelection: $updateSelection,
+                textDidChange: textDidChange
+            )
             
             if draft.text.isEmpty {
                 ControllerView(controller: { PlaceholderController() })
                     .font(.system(size: fontSize))
                     .foregroundColor(.secondary)
-                    .offset(x: 4, y: 8)
+                    .offset(placeholderOffset)
                     .accessibilityHidden(true)
+                    .allowsHitTesting(false)
             }
             
-            MainWrappedTextViewRepresentable(text: $draft.text, becomeFirstResponder: $controller.mainComposeTextViewBecomeFirstResponder, updateSelection: $updateSelection, textDidChange: textDidChange)
         }
         .frame(height: effectiveHeight)
         .onAppear(perform: becomeFirstResponderOnFirstAppearance)
@@ -62,6 +84,7 @@ fileprivate struct MainWrappedTextViewRepresentable: UIViewRepresentable {
     typealias UIViewType = UITextView
     
     @Binding var text: String
+    let backgroundColor: UIColor?
     @Binding var becomeFirstResponder: Bool
     @Binding var updateSelection: ((UITextView) -> Void)?
     let textDidChange: (UITextView) -> Void
@@ -74,10 +97,16 @@ fileprivate struct MainWrappedTextViewRepresentable: UIViewRepresentable {
         context.coordinator.textView = textView
         textView.delegate = context.coordinator
         textView.isEditable = true
-        textView.backgroundColor = .clear
         textView.font = UIFontMetrics.default.scaledFont(for: .systemFont(ofSize: 20))
         textView.adjustsFontForContentSizeCategory = true
         textView.textContainer.lineBreakMode = .byWordWrapping
+        
+        #if os(visionOS)
+        textView.borderStyle = .roundedRect
+        // yes, the X inset is 4 less than the placeholder offset
+        textView.textContainerInset = UIEdgeInsets(top: 8, left: 4, bottom: 8, right: 4)
+        #endif
+        
         return textView
     }
     
@@ -90,6 +119,8 @@ fileprivate struct MainWrappedTextViewRepresentable: UIViewRepresentable {
         uiView.isEditable = isEnabled
         uiView.keyboardType = controller.config.useTwitterKeyboard ? .twitter : .default
         
+        uiView.backgroundColor = backgroundColor
+        
         context.coordinator.text = $text
         
         if let updateSelection {
@@ -228,11 +259,7 @@ fileprivate struct MainWrappedTextViewRepresentable: UIViewRepresentable {
                 if range.length > 0 {
                     let formatMenu = suggestedActions[index] as! UIMenu
                     let newFormatMenu = formatMenu.replacingChildren(StatusFormat.allCases.map { fmt in
-                        var image: UIImage?
-                        if let imageName = fmt.imageName {
-                            image = UIImage(systemName: imageName)
-                        }
-                        return UIAction(title: fmt.accessibilityLabel, image: image) { [weak self] _ in
+                        return UIAction(title: fmt.accessibilityLabel, image: UIImage(systemName: fmt.imageName)) { [weak self] _ in
                             self?.applyFormat(fmt)
                         }
                     })

Packages/Duckable/Sources/Duckable/API.swift

@@ -7,6 +7,7 @@
 
 import UIKit
 
+@MainActor
 public protocol DuckableViewController: UIViewController {
     func duckableViewControllerShouldDuck() -> DuckAttemptAction
     

Packages/Duckable/Sources/Duckable/DuckableContainerViewController.swift

@@ -62,7 +62,9 @@ public class DuckableContainerViewController: UIViewController {
         guard case .idle = state else {
             if animated,
                case .ducked(_, placeholder: let placeholder) = state {
+                #if !os(visionOS)
                 UIImpactFeedbackGenerator(style: .light).impactOccurred()
+                #endif
                 let origConstant = placeholder.topConstraint.constant
                 UIView.animateKeyframes(withDuration: 0.4, delay: 0) {
                     UIView.addKeyframe(withRelativeStartTime: 0, relativeDuration: 0.5) {

Packages/GalleryVC/.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/GalleryVC/Package.swift

@@ -0,0 +1,26 @@
+// swift-tools-version: 5.10
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "GalleryVC",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "GalleryVC",
+            targets: ["GalleryVC"]),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "GalleryVC"),
+        .testTarget(
+            name: "GalleryVCTests",
+            dependencies: ["GalleryVC"]),
+    ]
+)

Packages/GalleryVC/Sources/GalleryVC/GalleryContentViewController.swift

@@ -0,0 +1,46 @@
+//
+//  GalleryContentViewController.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 3/17/24.
+//
+
+import UIKit
+
+@MainActor
+public protocol GalleryContentViewController: UIViewController {
+    var container: GalleryContentViewControllerContainer? { get set }
+    var contentSize: CGSize { get }
+    var activityItemsForSharing: [Any] { get }
+    var caption: String? { get }
+    var contentOverlayAccessoryViewController: UIViewController? { get }
+    var bottomControlsAccessoryViewController: UIViewController? { get }
+    var canAnimateFromSourceView: Bool { get }
+    
+    func setControlsVisible(_ visible: Bool, animated: Bool)
+    func galleryContentDidAppear()
+    func galleryContentWillDisappear()
+}
+
+public extension GalleryContentViewController {
+    var contentOverlayAccessoryViewController: UIViewController? {
+        nil
+    }
+
+    var bottomControlsAccessoryViewController: UIViewController? {
+        nil
+    }
+    
+    var canAnimateFromSourceView: Bool {
+        true
+    }
+    
+    func setControlsVisible(_ visible: Bool, animated: Bool) {
+    }
+    
+    func galleryContentDidAppear() {
+    }
+    
+    func galleryContentWillDisappear() {
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryContentViewControllerContainer.swift

@@ -0,0 +1,18 @@
+//
+//  GalleryContentViewControllerContainer.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 12/28/23.
+//
+
+import Foundation
+
+@MainActor
+public protocol GalleryContentViewControllerContainer: AnyObject {
+    var galleryControlsVisible: Bool { get }
+    
+    func setGalleryContentLoading(_ loading: Bool)
+    func galleryContentChanged()
+    func disableGalleryScrollAndZoom()
+    func setGalleryControlsVisible(_ visible: Bool, animated: Bool)
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryDataSource.swift

@@ -0,0 +1,22 @@
+//
+//  GalleryDataSource.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 12/28/23.
+//
+
+import UIKit
+
+@MainActor
+public protocol GalleryDataSource {
+    func galleryItemsCount() -> Int
+    func galleryContentViewController(forItemAt index: Int) -> GalleryContentViewController
+    func galleryContentTransitionSourceView(forItemAt index: Int) -> UIView?
+    func galleryApplicationActivities(forItemAt index: Int) -> [UIActivity]?
+}
+
+public extension GalleryDataSource {
+    func galleryApplicationActivities(forItemAt index: Int) -> [UIActivity]? {
+        nil
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryDismissAnimationController.swift

@@ -0,0 +1,140 @@
+//
+//  GalleryDismissAnimationController.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 3/1/24.
+//
+
+import UIKit
+
+class GalleryDismissAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
+    private let sourceView: UIView
+    private let interactiveTranslation: CGPoint?
+    private let interactiveVelocity: CGPoint?
+    
+    init(sourceView: UIView, interactiveTranslation: CGPoint?, interactiveVelocity: CGPoint?) {
+        self.sourceView = sourceView
+        self.interactiveTranslation = interactiveTranslation
+        self.interactiveVelocity = interactiveVelocity
+    }
+    
+    func transitionDuration(using transitionContext: (any UIViewControllerContextTransitioning)?) -> TimeInterval {
+        return 0.3
+    }
+    
+    func animateTransition(using transitionContext: any UIViewControllerContextTransitioning) {
+        guard let to = transitionContext.viewController(forKey: .to),
+              let from = transitionContext.viewController(forKey: .from) as? GalleryViewController else {
+            fatalError()
+        }
+        
+        let itemViewController = from.currentItemViewController
+        
+        if !itemViewController.content.canAnimateFromSourceView || (UIAccessibility.prefersCrossFadeTransitions && interactiveVelocity == nil) {
+            animateCrossFadeTransition(using: transitionContext)
+            return
+        }
+        
+        let container = transitionContext.containerView
+        let sourceFrameInContainer = container.convert(sourceView.bounds, from: sourceView)
+        let destFrameInContainer = container.convert(itemViewController.content.view.bounds, from: itemViewController.content.view)
+        
+        let origSourceTransform = sourceView.transform
+        let appliedSourceToDestTransform: Bool
+        if destFrameInContainer.width > 0 && destFrameInContainer.height > 0 {
+            appliedSourceToDestTransform = true
+            let scale = min(destFrameInContainer.width / sourceFrameInContainer.width, destFrameInContainer.height / sourceFrameInContainer.height)
+            let sourceToDestTransform = origSourceTransform
+                .translatedBy(x: destFrameInContainer.midX - sourceFrameInContainer.midX, y: destFrameInContainer.midY - sourceFrameInContainer.midY)
+                .scaledBy(x: scale, y: scale)
+            sourceView.transform = sourceToDestTransform
+        } else {
+            appliedSourceToDestTransform = false
+        }
+        
+        // Moving `to.view` to the container is necessary when the presenting VC (i.e., `to`)
+        // is in the window's root presentation.
+        // But it breaks when the gallery is presented from a sheet-presented VC--in which case
+        // `to.view` is already in the view hierarchy at this point; and adding it to the
+        // container causees it to be removed when the transition completes.
+        if to.view.superview == nil {
+            to.view.frame = container.bounds
+            container.addSubview(to.view)
+        }
+        
+        from.view.frame = container.bounds
+        container.addSubview(from.view)
+
+        let content = itemViewController.takeContent()
+        content.view.translatesAutoresizingMaskIntoConstraints = true
+        content.view.layer.masksToBounds = true
+        container.addSubview(content.view)
+        
+        content.view.frame = destFrameInContainer
+        content.view.layer.opacity = 1
+        
+        container.layoutIfNeeded()
+        
+        let duration = self.transitionDuration(using: transitionContext)
+        var initialVelocity: CGVector
+        if let interactiveVelocity,
+           let interactiveTranslation,
+           // very short/fast flicks don't transfer their velocity, since it makes size change animation look wacky due to the springs initial undershoot
+           sqrt(pow(interactiveTranslation.x, 2) + pow(interactiveTranslation.y, 2)) > 100,
+           sqrt(pow(interactiveVelocity.x, 2) + pow(interactiveVelocity.y, 2)) < 2000 {
+            let xDistance = sourceFrameInContainer.midX - destFrameInContainer.midX
+            let yDistance = sourceFrameInContainer.midY - destFrameInContainer.midY
+            initialVelocity = CGVector(
+                dx: xDistance == 0 ? 0 : interactiveVelocity.x / xDistance,
+                dy: yDistance == 0 ? 0 : interactiveVelocity.y / yDistance
+            )
+        } else {
+            initialVelocity = .zero
+        }
+        initialVelocity.dx = max(-10, min(10, initialVelocity.dx))
+        initialVelocity.dy = max(-10, min(10, initialVelocity.dy))
+        // no bounce for the dismiss animation
+        let spring = UISpringTimingParameters(mass: 1, stiffness: 439, damping: 42, initialVelocity: initialVelocity)
+        let animator = UIViewPropertyAnimator(duration: duration, timingParameters: spring)
+        
+        animator.addAnimations {
+            from.view.layer.opacity = 0
+            
+            if appliedSourceToDestTransform {
+                self.sourceView.transform = origSourceTransform
+            }
+            content.view.frame = sourceFrameInContainer
+            content.view.layer.opacity = 0
+            
+            itemViewController.setControlsVisible(false, animated: false)
+        }
+        
+        animator.addCompletion { _ in
+            transitionContext.completeTransition(true)
+        }
+        
+        animator.startAnimation()
+    }
+    
+    private func animateCrossFadeTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        guard let fromVC = transitionContext.viewController(forKey: .from),
+              let toVC = transitionContext.viewController(forKey: .to) else {
+            return
+        }
+        
+        toVC.view.frame = transitionContext.containerView.bounds
+        fromVC.view.frame = transitionContext.containerView.bounds
+        transitionContext.containerView.addSubview(toVC.view)
+        transitionContext.containerView.addSubview(fromVC.view)
+        
+        let duration = transitionDuration(using: transitionContext)
+        let animator = UIViewPropertyAnimator(duration: duration, curve: .easeInOut)
+        animator.addAnimations {
+            fromVC.view.alpha = 0
+        }
+        animator.addCompletion { _ in
+            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+        }
+        animator.startAnimation()
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryDismissInteraction.swift

@@ -0,0 +1,83 @@
+//
+//  GalleryDismissInteraction.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 3/1/24.
+//
+
+import UIKit
+
+@MainActor
+class GalleryDismissInteraction: NSObject {
+    
+    private unowned let viewController: GalleryViewController
+    
+    private var content: GalleryContentViewController?
+    private var origContentFrameInGallery: CGRect?
+    private var origControlsVisible: Bool?
+
+    private(set) var isActive = false
+    private(set) var dismissVelocity: CGPoint?
+    private(set) var dismissTranslation: CGPoint?
+    
+    init(viewController: GalleryViewController) {
+        self.viewController = viewController
+        super.init()
+        let panRecognizer = UIPanGestureRecognizer(target: self, action: #selector(panRecognized))
+        panRecognizer.delegate = self
+        panRecognizer.allowedScrollTypesMask = .continuous
+        viewController.view.addGestureRecognizer(panRecognizer)
+    }
+    
+    @objc private func panRecognized(_ recognizer: UIPanGestureRecognizer) {
+        switch recognizer.state {
+        case .began:
+            isActive = true
+            
+            origContentFrameInGallery = viewController.view.convert(viewController.currentItemViewController.content.view.bounds, from: viewController.currentItemViewController.content.view)
+            content = viewController.currentItemViewController.takeContent()
+            content!.view.translatesAutoresizingMaskIntoConstraints = true
+            content!.view.frame = origContentFrameInGallery!
+            viewController.view.addSubview(content!.view)
+            
+            origControlsVisible = viewController.currentItemViewController.controlsVisible
+            if origControlsVisible! {
+                viewController.currentItemViewController.setControlsVisible(false, animated: true)
+            }
+            
+        case .changed:
+            let translation = recognizer.translation(in: viewController.view)
+            content!.view.frame = origContentFrameInGallery!.offsetBy(dx: translation.x, dy: translation.y)
+            
+        case .ended:
+            let translation = recognizer.translation(in: viewController.view)
+            let velocity = recognizer.velocity(in: viewController.view)
+            
+            dismissVelocity = velocity
+            dismissTranslation = translation
+            viewController.dismiss(animated: true)
+
+            // don't unset this until after dismiss is called, so that the dismiss animation controller can read it
+            isActive = false
+            
+        default:
+            break
+        }
+    }
+    
+}
+
+extension GalleryDismissInteraction: UIGestureRecognizerDelegate {
+    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
+        let itemVC = viewController.currentItemViewController
+        if viewController.galleryDataSource.galleryContentTransitionSourceView(forItemAt: itemVC.itemIndex) == nil {
+            return false
+        } else if itemVC.scrollView.zoomScale > itemVC.scrollView.minimumZoomScale {
+            return false
+        } else if !itemVC.scrollAndZoomEnabled {
+            return false
+        } else {
+            return true
+        }
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryItemViewController.swift

@@ -0,0 +1,566 @@
+//
+//  GalleryItemViewController.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 12/28/23.
+//
+
+import UIKit
+import AVFoundation
+
+@MainActor
+protocol GalleryItemViewControllerDelegate: AnyObject {
+    func isGalleryBeingPresented() -> Bool
+    func addPresentationAnimationCompletion(_ block: @escaping () -> Void)
+    func galleryItemClose(_ item: GalleryItemViewController)
+    func galleryItemApplicationActivities(_ item: GalleryItemViewController) -> [UIActivity]?
+}
+
+class GalleryItemViewController: UIViewController {
+    private weak var delegate: GalleryItemViewControllerDelegate?
+    
+    let itemIndex: Int
+    let content: GalleryContentViewController
+    private var overlayVC: UIViewController?
+    
+    private var activityIndicator: UIActivityIndicatorView?
+    private(set) var scrollView: UIScrollView!
+    private var topControlsView: UIView!
+    private var shareButton: UIButton!
+    private var shareButtonLeadingConstraint: NSLayoutConstraint!
+    private var shareButtonTopConstraint: NSLayoutConstraint!
+    private var closeButtonTrailingConstraint: NSLayoutConstraint!
+    private var closeButtonTopConstraint: NSLayoutConstraint!
+    private var bottomControlsView: UIStackView!
+    private(set) var captionTextView: UITextView!
+    
+    private var singleTap: UITapGestureRecognizer!
+    private var doubleTap: UITapGestureRecognizer!
+
+    private var contentViewLeadingConstraint: NSLayoutConstraint?
+    private var contentViewTopConstraint: NSLayoutConstraint?
+
+    private(set) var controlsVisible: Bool = true
+    private(set) var scrollAndZoomEnabled = true
+    
+    private var scrollViewSizeForLastZoomScaleUpdate: CGSize?
+    override var prefersHomeIndicatorAutoHidden: Bool {
+        return !controlsVisible
+    }
+    
+    init(delegate: GalleryItemViewControllerDelegate, itemIndex: Int, content: GalleryContentViewController) {
+        self.delegate = delegate
+        self.itemIndex = itemIndex
+        self.content = content
+        
+        super.init(nibName: nil, bundle: nil)
+        
+        content.container = self
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        scrollView = UIScrollView()
+        scrollView.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.delegate = self
+        
+        view.addSubview(scrollView)
+        
+        addContent()
+        centerContent()
+        
+        overlayVC = content.contentOverlayAccessoryViewController
+        if let overlayVC {
+            overlayVC.view.isHidden = activityIndicator != nil
+            overlayVC.view.translatesAutoresizingMaskIntoConstraints = false
+            view.addSubview(overlayVC.view)
+            NSLayoutConstraint.activate([
+                overlayVC.view.leadingAnchor.constraint(equalTo: content.view.leadingAnchor),
+                overlayVC.view.trailingAnchor.constraint(equalTo: content.view.trailingAnchor),
+                overlayVC.view.topAnchor.constraint(equalTo: content.view.topAnchor),
+                overlayVC.view.bottomAnchor.constraint(equalTo: content.view.bottomAnchor),
+            ])
+        }
+        
+        topControlsView = UIView()
+        topControlsView.translatesAutoresizingMaskIntoConstraints = false
+        view.addSubview(topControlsView)
+        
+        var shareConfig = UIButton.Configuration.gray()
+        shareConfig.cornerStyle = .dynamic
+        shareConfig.background.backgroundColor = .black.withAlphaComponent(0.25)
+        shareConfig.baseForegroundColor = .white
+        shareConfig.image = UIImage(systemName: "square.and.arrow.up")
+        shareConfig.contentInsets = NSDirectionalEdgeInsets(top: 4, leading: 4, bottom: 4, trailing: 4)
+        shareButton = UIButton(configuration: shareConfig)
+        shareButton.addTarget(self, action: #selector(shareButtonPressed), for: .touchUpInside)
+        shareButton.isPointerInteractionEnabled = true
+        shareButton.pointerStyleProvider = { button, effect, shape in
+            return UIPointerStyle(effect: .highlight(effect.preview), shape: .roundedRect(button.frame))
+        }
+        shareButton.preferredBehavioralStyle = .pad
+        shareButton.translatesAutoresizingMaskIntoConstraints = false
+        updateShareButton()
+        topControlsView.addSubview(shareButton)
+        
+        var closeConfig = UIButton.Configuration.gray()
+        closeConfig.cornerStyle = .dynamic
+        closeConfig.background.backgroundColor = .black.withAlphaComponent(0.25)
+        closeConfig.baseForegroundColor = .white
+        closeConfig.image = UIImage(systemName: "xmark")
+        closeConfig.contentInsets = NSDirectionalEdgeInsets(top: 4, leading: 4, bottom: 4, trailing: 4)
+        let closeButton = UIButton(configuration: closeConfig)
+        closeButton.addTarget(self, action: #selector(closeButtonPressed), for: .touchUpInside)
+        closeButton.isPointerInteractionEnabled = true
+        closeButton.pointerStyleProvider = { button, effect, shape in
+            return UIPointerStyle(effect: .highlight(effect.preview), shape: .roundedRect(button.frame))
+        }
+        closeButton.preferredBehavioralStyle = .pad
+        closeButton.translatesAutoresizingMaskIntoConstraints = false
+        topControlsView.addSubview(closeButton)
+        
+        bottomControlsView = UIStackView()
+        bottomControlsView.translatesAutoresizingMaskIntoConstraints = false
+        bottomControlsView.axis = .vertical
+        bottomControlsView.alignment = .fill
+        bottomControlsView.backgroundColor = .black.withAlphaComponent(0.5)
+        view.addSubview(bottomControlsView)
+        
+        if let controlsAccessory = content.bottomControlsAccessoryViewController {
+            addChild(controlsAccessory)
+            bottomControlsView.addArrangedSubview(controlsAccessory.view)
+            controlsAccessory.didMove(toParent: self)
+            
+            // Make sure the controls accessory is within the safe area.
+            let spacer = UIView()
+            bottomControlsView.addArrangedSubview(spacer)
+            let spacerTopConstraint = spacer.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor)
+            spacerTopConstraint.priority = .init(999)
+            spacerTopConstraint.isActive = true
+        }
+        
+        captionTextView = UITextView()
+        captionTextView.backgroundColor = .clear
+        captionTextView.textColor = .white
+        captionTextView.isEditable = false
+        captionTextView.isSelectable = true
+        captionTextView.font = .preferredFont(forTextStyle: .body)
+        captionTextView.adjustsFontForContentSizeCategory = true
+        captionTextView.alwaysBounceVertical = true
+        updateCaptionTextView()
+        bottomControlsView.addArrangedSubview(captionTextView)
+        
+        #if targetEnvironment(macCatalyst)
+        closeButtonTopConstraint = closeButton.topAnchor.constraint(equalTo: topControlsView.safeAreaLayoutGuide.topAnchor)
+        shareButtonTopConstraint = shareButton.topAnchor.constraint(equalTo: topControlsView.safeAreaLayoutGuide.topAnchor)
+        #else
+        closeButtonTopConstraint = closeButton.topAnchor.constraint(equalTo: topControlsView.topAnchor)
+        shareButtonTopConstraint = shareButton.topAnchor.constraint(equalTo: topControlsView.topAnchor)
+        #endif
+        closeButtonTrailingConstraint = topControlsView.trailingAnchor.constraint(equalTo: closeButton.trailingAnchor)
+        shareButtonLeadingConstraint = shareButton.leadingAnchor.constraint(equalTo: topControlsView.leadingAnchor)
+
+        NSLayoutConstraint.activate([
+            scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            scrollView.topAnchor.constraint(equalTo: view.topAnchor),
+            scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+            
+            topControlsView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            topControlsView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            topControlsView.topAnchor.constraint(equalTo: view.topAnchor),
+
+            shareButtonLeadingConstraint,
+            shareButtonTopConstraint,
+            shareButton.bottomAnchor.constraint(equalTo: topControlsView.bottomAnchor),
+            shareButton.widthAnchor.constraint(equalTo: shareButton.heightAnchor),
+            
+            closeButtonTrailingConstraint,
+            closeButtonTopConstraint,
+            closeButton.bottomAnchor.constraint(equalTo: topControlsView.bottomAnchor),
+            closeButton.widthAnchor.constraint(equalTo: closeButton.heightAnchor),
+
+            bottomControlsView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            bottomControlsView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            bottomControlsView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+            
+            captionTextView.heightAnchor.constraint(equalToConstant: 150),
+        ])
+        
+        updateTopControlsInsets()
+        
+        singleTap = UITapGestureRecognizer(target: self, action: #selector(viewPressed))
+        singleTap.delegate = self
+        doubleTap = UITapGestureRecognizer(target: self, action: #selector(viewDoublePressed))
+        doubleTap.delegate = self
+        doubleTap.numberOfTapsRequired = 2
+        // This is needed to prevent a delay between tapping a button on and the action firing on Catalyst and Designed for iPad
+        doubleTap.delaysTouchesEnded = false
+        // this requirement is needed to make sure the double tap is ever recognized
+        singleTap.require(toFail: doubleTap)
+        view.addGestureRecognizer(singleTap)
+        view.addGestureRecognizer(doubleTap)
+    }
+    
+    override func viewSafeAreaInsetsDidChange() {
+        super.viewSafeAreaInsetsDidChange()
+        
+        updateZoomScale(resetZoom: false)
+        // Ensure the transform is correct if the controls are hidden
+        setControlsVisible(controlsVisible, animated: false)
+        
+        updateTopControlsInsets()
+    }
+    
+    override func viewDidLayoutSubviews() {
+        super.viewDidLayoutSubviews()
+        
+        // When the scrollView size changes, make sure the zoom scale is up-to-date since it depends on the scrollView's bounds.
+        // This might also fix an issue on macOS (Designed for iPad) where the content isn't placed correctly. See #446
+        if scrollViewSizeForLastZoomScaleUpdate != scrollView.bounds.size {
+            scrollViewSizeForLastZoomScaleUpdate = scrollView.bounds.size
+            updateZoomScale(resetZoom: true)
+        }
+        centerContent()
+    }
+    
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        
+        if controlsVisible && !captionTextView.isHidden {
+            captionTextView.flashScrollIndicators()
+        }
+    }
+    
+    func takeContent() -> GalleryContentViewController {
+        content.willMove(toParent: nil)
+        content.removeFromParent()
+        content.view.removeFromSuperview()
+        return content
+    }
+    
+    func addContent() {
+        content.loadViewIfNeeded()
+        
+        content.setControlsVisible(controlsVisible, animated: false)
+        
+        content.view.translatesAutoresizingMaskIntoConstraints = false
+        if content.parent != self {
+            addChild(content)
+            content.didMove(toParent: self)
+        }
+        if scrollAndZoomEnabled {
+            scrollView.addSubview(content.view)
+            contentViewLeadingConstraint = content.view.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor)
+            contentViewLeadingConstraint!.isActive = true
+            contentViewTopConstraint = content.view.topAnchor.constraint(equalTo: scrollView.topAnchor)
+            contentViewTopConstraint!.isActive = true
+            updateZoomScale(resetZoom: true)
+        } else {
+            // If the content was previously added, deactivate the old constraints.
+            contentViewLeadingConstraint?.isActive = false
+            contentViewTopConstraint?.isActive = false
+            
+            view.addSubview(content.view)
+            NSLayoutConstraint.activate([
+                content.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+                content.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+                content.view.topAnchor.constraint(equalTo: view.topAnchor),
+                content.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+            ])
+        }
+        
+        if let overlayVC {
+            NSLayoutConstraint.activate([
+                overlayVC.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+                overlayVC.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+                overlayVC.view.topAnchor.constraint(equalTo: view.topAnchor),
+                overlayVC.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
+            ])
+        }
+        
+        content.view.layoutIfNeeded()
+    }
+    
+    func setControlsVisible(_ visible: Bool, animated: Bool) {
+        controlsVisible = visible
+        guard let topControlsView,
+              let bottomControlsView else {
+            return
+        }
+        func updateControlsViews() {
+            topControlsView.transform = CGAffineTransform(translationX: 0, y: visible ? 0 : -topControlsView.bounds.height)
+            bottomControlsView.transform = CGAffineTransform(translationX: 0, y: visible ? 0 : bottomControlsView.bounds.height)
+            content.setControlsVisible(visible, animated: animated)
+        }
+        if animated {
+            let animator = UIViewPropertyAnimator(duration: 0.2, timingParameters: UISpringTimingParameters())
+            animator.addAnimations(updateControlsViews)
+            animator.startAnimation()
+        } else {
+            updateControlsViews()
+        }
+        
+        setNeedsUpdateOfHomeIndicatorAutoHidden()
+    }
+    
+    func updateZoomScale(resetZoom: Bool) {
+        scrollView.contentSize = content.contentSize
+        
+        guard scrollAndZoomEnabled else {
+            scrollView.maximumZoomScale = 1
+            scrollView.minimumZoomScale = 1
+            scrollView.zoomScale = 1
+            return
+        }
+        
+        guard content.contentSize.width > 0 && content.contentSize.height > 0 else {
+            return
+        }
+        
+        let heightScale = view.bounds.height / content.contentSize.height
+        let widthScale = view.bounds.width / content.contentSize.width
+        let minScale = min(widthScale, heightScale)
+        let maxScale = minScale >= 1 ? minScale + 2 : 2
+        
+        scrollView.minimumZoomScale = minScale
+        scrollView.maximumZoomScale = maxScale
+        if resetZoom {
+            scrollView.zoomScale = minScale
+        } else {
+            scrollView.zoomScale = max(minScale, min(maxScale, scrollView.zoomScale))
+        }
+        
+        centerContent()
+    }
+    
+    private func centerContent() {
+        guard scrollAndZoomEnabled else {
+            return
+        }
+        
+        // Note: use frame for the content.view, because that's in the coordinate space of the scroll view
+        // which means it's already been scaled by the zoom factor.
+        let yOffset = max(0, (view.bounds.height - content.view.frame.height) / 2)
+        contentViewTopConstraint!.constant = yOffset
+        
+        let xOffset = max(0, (view.bounds.width - content.view.frame.width) / 2)
+        contentViewLeadingConstraint!.constant = xOffset
+    }
+    
+    private func updateShareButton() {
+        shareButton.isEnabled = !content.activityItemsForSharing.isEmpty
+    }
+    
+    private func updateCaptionTextView() {
+        guard let caption = content.caption,
+              !caption.isEmpty else {
+            captionTextView.isHidden = true
+            return
+        }
+        captionTextView.text = caption
+    }
+    
+    private func updateTopControlsInsets() {
+        let notchedDeviceTopInsets: [CGFloat] = [
+            44, // iPhone X, Xs, Xs Max, 11 Pro, 11 Pro Max
+            48, // iPhone XR, 11
+            47, // iPhone 12, 12 Pro, 12 Pro Max, 13, 13 Pro, 13 Pro Max, 14, 14 Plus
+            50, // iPhone 12 mini, 13 mini
+        ]
+        let islandDeviceTopInsets: [CGFloat] = [
+            59, // iPhone 14 Pro, 14 Pro Max, 15 Pro, 15 Pro Max
+        ]
+        if notchedDeviceTopInsets.contains(view.safeAreaInsets.top) {
+            // the notch width is not the same for the iPhones 13,
+            // but what we actually want is the same offset from the edges
+            // since the corner radius didn't change
+            let notchWidth: CGFloat = 210
+            let earWidth = (view.bounds.width - notchWidth) / 2
+            let offset = (earWidth - (shareButton.imageView?.bounds.width ?? 0)) / 2
+            shareButtonLeadingConstraint.constant = offset
+            closeButtonTrailingConstraint.constant = offset
+        } else if islandDeviceTopInsets.contains(view.safeAreaInsets.top) {
+            shareButtonLeadingConstraint.constant = 24
+            shareButtonTopConstraint.constant = 24
+            closeButtonTrailingConstraint.constant = 24
+            closeButtonTopConstraint.constant = 24
+        } else {
+            shareButtonLeadingConstraint.constant = 8
+            shareButtonTopConstraint.constant = 8
+            closeButtonTrailingConstraint.constant = 8
+            closeButtonTopConstraint.constant = 8
+        }
+    }
+    
+    private func zoomRectFor(scale: CGFloat, center: CGPoint) -> CGRect {
+        var zoomRect = CGRect.zero
+        zoomRect.size.width = content.view.frame.width / scale
+        zoomRect.size.height = content.view.frame.height / scale
+        let newCenter = scrollView.convert(center, to: content.view)
+        zoomRect.origin.x = newCenter.x - (zoomRect.width / 2)
+        zoomRect.origin.y = newCenter.y - (zoomRect.height / 2)
+        return zoomRect
+    }
+    
+    private func animateZoomOut() {
+        let animator = UIViewPropertyAnimator(duration: 0.3, timingParameters: UISpringTimingParameters())
+        animator.addAnimations {
+            self.scrollView.zoomScale = self.scrollView.minimumZoomScale
+            self.scrollView.layoutIfNeeded()
+        }
+        animator.startAnimation()
+    }
+
+    // MARK: Interaction
+    
+    @objc private func viewPressed() {
+        if scrollAndZoomEnabled,
+           scrollView.zoomScale > scrollView.minimumZoomScale {
+            animateZoomOut()
+        } else {
+            setControlsVisible(!controlsVisible, animated: true)
+        }
+    }
+    
+    @objc private func viewDoublePressed(_ recognizer: UITapGestureRecognizer) {
+        guard scrollAndZoomEnabled else {
+            return
+        }
+        if scrollView.zoomScale <= scrollView.minimumZoomScale {
+            let point = recognizer.location(in: recognizer.view)
+            let scale = min(
+                max(
+                    scrollView.bounds.width / content.contentSize.width,
+                    scrollView.bounds.height / content.contentSize.height,
+                    scrollView.zoomScale + 0.75
+                ),
+                scrollView.maximumZoomScale
+            )
+            let rect = zoomRectFor(scale: scale, center: point)
+            let animator = UIViewPropertyAnimator(duration: 0.3, timingParameters: UISpringTimingParameters())
+            animator.addAnimations {
+                self.scrollView.zoom(to: rect, animated: false)
+                self.view.layoutIfNeeded()
+            }
+            animator.startAnimation()
+        } else {
+            animateZoomOut()
+        }
+    }
+    
+    @objc private func closeButtonPressed() {
+        delegate?.galleryItemClose(self)
+    }
+    
+    @objc private func shareButtonPressed() {
+        let items = content.activityItemsForSharing
+        guard !items.isEmpty else {
+            return
+        }
+        let activityVC = UIActivityViewController(activityItems: items, applicationActivities: delegate?.galleryItemApplicationActivities(self))
+        activityVC.popoverPresentationController?.sourceView = shareButton
+        present(activityVC, animated: true)
+    }
+    
+}
+
+extension GalleryItemViewController: GalleryContentViewControllerContainer {
+    var galleryControlsVisible: Bool {
+        controlsVisible
+    }
+    
+    func setGalleryContentLoading(_ loading: Bool) {
+        if loading {
+            overlayVC?.view.isHidden = true
+            if activityIndicator == nil {
+                let activityIndicator = UIActivityIndicatorView(style: .large)
+                self.activityIndicator = activityIndicator
+                activityIndicator.startAnimating()
+                activityIndicator.translatesAutoresizingMaskIntoConstraints = false
+                view.addSubview(activityIndicator)
+                NSLayoutConstraint.activate([
+                    activityIndicator.centerXAnchor.constraint(equalTo: view.centerXAnchor),
+                    activityIndicator.centerYAnchor.constraint(equalTo: view.centerYAnchor),
+                ])
+            }
+        } else {
+            if let activityIndicator {
+                // If we're in the middle of the presentation animation,
+                // wait until it finishes to hide the loading indicator.
+                // Since the updated content frame won't affect the animation,
+                // make sure the loading indicator remains visible.
+                if let delegate,
+                   delegate.isGalleryBeingPresented() {
+                    delegate.addPresentationAnimationCompletion { [unowned self] in
+                        self.setGalleryContentLoading(false)
+                    }
+                } else {
+                    activityIndicator.removeFromSuperview()
+                    self.activityIndicator = nil
+                    self.overlayVC?.view.isHidden = false
+                }
+            }
+        }
+    }
+    
+    func galleryContentChanged() {
+        updateZoomScale(resetZoom: true)
+        updateShareButton()
+        updateCaptionTextView()
+    }
+    
+    func disableGalleryScrollAndZoom() {
+        scrollAndZoomEnabled = false
+        updateZoomScale(resetZoom: true)
+        scrollView.isScrollEnabled = false
+        // Make sure the content is re-added with the correct constraints
+        if content.parent == self {
+            addContent()
+        }
+    }
+    
+    func setGalleryControlsVisible(_ visible: Bool, animated: Bool) {
+        setControlsVisible(visible, animated: animated)
+    }
+}
+
+extension GalleryItemViewController: UIScrollViewDelegate {
+    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
+        if scrollAndZoomEnabled {
+            return content.view
+        } else {
+            return nil
+        }
+    }
+    
+    func scrollViewDidZoom(_ scrollView: UIScrollView) {
+        if scrollView.zoomScale <= scrollView.minimumZoomScale {
+            setControlsVisible(true, animated: true)
+        } else {
+            setControlsVisible(false, animated: true)
+        }
+        
+        centerContent()
+        scrollView.layoutIfNeeded()
+    }
+}
+
+extension GalleryItemViewController: UIGestureRecognizerDelegate {
+    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
+        if gestureRecognizer == singleTap {
+            let loc = gestureRecognizer.location(in: view)
+            return !topControlsView.frame.contains(loc) && !bottomControlsView.frame.contains(loc)
+        } else if gestureRecognizer == doubleTap {
+            let loc = gestureRecognizer.location(in: content.view)
+            return content.view.bounds.contains(loc)
+        } else {
+            return true
+        }
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryPresentationAnimationController.swift

@@ -0,0 +1,136 @@
+//
+//  GalleryPresentationAnimationController.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 12/28/23.
+//
+
+import UIKit
+
+class GalleryPresentationAnimationController: NSObject, UIViewControllerAnimatedTransitioning {
+    private let sourceView: UIView
+    
+    init(sourceView: UIView) {
+        self.sourceView = sourceView
+    }
+    
+    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
+        return 0.4
+    }
+    
+    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        guard let to = transitionContext.viewController(forKey: .to) as? GalleryViewController else {
+            fatalError()
+        }
+        
+        let itemViewController = to.currentItemViewController
+
+        if !itemViewController.content.canAnimateFromSourceView || UIAccessibility.prefersCrossFadeTransitions {
+            animateCrossFadeTransition(using: transitionContext)
+            return
+        }
+        
+        let container = transitionContext.containerView
+        to.view.frame = container.bounds
+        container.addSubview(to.view)
+        
+        container.layoutIfNeeded()
+        // Make sure the zoom scale is updated before getting the content view frame, since it needs to take into account the correct transform.
+        itemViewController.updateZoomScale(resetZoom: true)
+        
+        let sourceFrameInContainer = container.convert(sourceView.bounds, from: sourceView)
+        let destFrameInContainer = container.convert(itemViewController.content.view.bounds, from: itemViewController.content.view)
+
+        // Use a transformation to make the actual source view appear to move into the destination frame.
+        // Doing this while having the content view fade-in papers over the z-index change when
+        // there was something overlapping the source view.
+        let origSourceTransform = sourceView.transform
+        let sourceToDestTransform: CGAffineTransform?
+        if destFrameInContainer.width > 0 && destFrameInContainer.height > 0 {
+            // Scale evenly in both dimensions, to prevent the source view appearing to stretch/distort during the animation.
+            let scale = min(destFrameInContainer.width / sourceFrameInContainer.width, destFrameInContainer.height / sourceFrameInContainer.height)
+            sourceToDestTransform = origSourceTransform
+                .translatedBy(x: destFrameInContainer.midX - sourceFrameInContainer.midX, y: destFrameInContainer.midY - sourceFrameInContainer.midY)
+                .scaledBy(x: scale, y: scale)
+        } else {
+            sourceToDestTransform = nil
+        }
+        
+        let content = itemViewController.takeContent()
+        content.view.translatesAutoresizingMaskIntoConstraints = true
+        container.insertSubview(content.view, belowSubview: to.view)
+
+        // Use a separate dimming view from to.view, so that the gallery controls can be in front of the moving content.
+        let dimmingView = UIView()
+        dimmingView.backgroundColor = .black
+        dimmingView.frame = container.bounds
+        dimmingView.layer.opacity = 0
+        container.insertSubview(dimmingView, belowSubview: content.view)
+
+        to.view.backgroundColor = nil
+        to.view.layer.opacity = 0
+        content.view.frame = sourceFrameInContainer
+        content.view.layer.opacity = 0
+        
+        container.layoutIfNeeded()
+        
+        // This needs to take place after the layout, so that the transform is correct.
+        itemViewController.setControlsVisible(false, animated: false)
+
+        let duration = self.transitionDuration(using: transitionContext)
+        // rougly equivalent to duration: 0.35, bounce: 0.3
+        let spring = UISpringTimingParameters(mass: 1, stiffness: 322, damping: 25, initialVelocity: .zero)
+        let animator = UIViewPropertyAnimator(duration: duration, timingParameters: spring)
+        
+        animator.addAnimations {
+            dimmingView.layer.opacity = 1
+            
+            to.view.layer.opacity = 1
+            
+            content.view.frame = destFrameInContainer
+            content.view.layer.opacity = 1
+            
+            itemViewController.setControlsVisible(true, animated: false)
+
+            if let sourceToDestTransform {
+                self.sourceView.transform = sourceToDestTransform
+            }
+        }
+        
+        animator.addCompletion { _ in
+            dimmingView.removeFromSuperview()
+            
+            to.view.backgroundColor = .black
+            
+            if sourceToDestTransform != nil {
+                self.sourceView.transform = origSourceTransform
+            }
+            
+            itemViewController.addContent()
+            
+            transitionContext.completeTransition(true)
+        }
+        
+        animator.startAnimation()
+    }
+    
+    private func animateCrossFadeTransition(using transitionContext: UIViewControllerContextTransitioning) {
+        guard let to = transitionContext.viewController(forKey: .to) as? GalleryViewController else {
+            return
+        }
+        
+        to.view.alpha = 0
+        to.view.frame = transitionContext.containerView.bounds
+        transitionContext.containerView.addSubview(to.view)
+        
+        let duration = transitionDuration(using: transitionContext)
+        let animator = UIViewPropertyAnimator(duration: duration, curve: .easeInOut)
+        animator.addAnimations {
+            to.view.alpha = 1
+        }
+        animator.addCompletion { _ in
+            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
+        }
+        animator.startAnimation()
+    }
+}

Packages/GalleryVC/Sources/GalleryVC/GalleryViewController.swift

@@ -0,0 +1,179 @@
+//
+//  GalleryViewController.swift
+//  GalleryVC
+//
+//  Created by Shadowfacts on 12/28/23.
+//
+
+import UIKit
+
+public class GalleryViewController: UIPageViewController {
+    
+    let galleryDataSource: GalleryDataSource
+    let initialItemIndex: Int
+    private let _itemsCount: Int
+    private var itemsCount: Int {
+        get {
+            precondition(_itemsCount == galleryDataSource.galleryItemsCount(), "GalleryDataSource item count cannot change")
+            return _itemsCount
+        }
+    }
+    
+    var currentItemViewController: GalleryItemViewController {
+        viewControllers![0] as! GalleryItemViewController
+    }
+    
+    private var dismissInteraction: GalleryDismissInteraction!
+    private var presentationAnimationCompletionHandlers: [() -> Void] = []
+    
+    override public var prefersStatusBarHidden: Bool {
+        true
+    }
+    override public var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
+        .none
+    }
+    override public var childForHomeIndicatorAutoHidden: UIViewController? {
+        currentItemViewController
+    }
+    
+    public init(dataSource: GalleryDataSource, initialItemIndex: Int) {
+        self.galleryDataSource = dataSource
+        self.initialItemIndex = initialItemIndex
+        self._itemsCount = dataSource.galleryItemsCount()
+        precondition(initialItemIndex >= 0 && initialItemIndex < _itemsCount, "initialItemIndex is out of bounds")
+        
+        super.init(transitionStyle: .scroll, navigationOrientation: .horizontal, options: [
+            .interPageSpacing: 50
+        ])
+        
+        modalPresentationStyle = .fullScreen
+        transitioningDelegate = self
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    public override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        dismissInteraction = GalleryDismissInteraction(viewController: self)
+        
+        view.backgroundColor = .black
+        overrideUserInterfaceStyle = .dark
+        
+        dataSource = self
+        delegate = self
+        
+        setViewControllers([makeItemVC(index: initialItemIndex)], direction: .forward, animated: false)
+    }
+    
+    public override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        
+        if animated {
+            // Wait until the transition is no longer in-progress, otherwise things will just get deferred again.
+            DispatchQueue.main.async {
+                self.presentationAnimationCompleted()
+            }
+        }
+    }
+    
+    public override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+        
+        if isBeingDismissed {
+            currentItemViewController.content.galleryContentWillDisappear()
+        }
+    }
+    
+    private func makeItemVC(index: Int) -> GalleryItemViewController {
+        let content = galleryDataSource.galleryContentViewController(forItemAt: index)
+        return GalleryItemViewController(delegate: self, itemIndex: index, content: content)
+    }
+    
+    func presentationAnimationCompleted() {
+        for block in presentationAnimationCompletionHandlers {
+            block()
+        }
+        currentItemViewController.content.galleryContentDidAppear()
+    }
+}
+
+extension GalleryViewController: UIPageViewControllerDataSource {
+    public func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
+        guard let viewController = viewController as? GalleryItemViewController else {
+            preconditionFailure("VC must be GalleryItemViewController")
+        }
+        guard viewController.itemIndex > 0 else {
+            return nil
+        }
+        return makeItemVC(index: viewController.itemIndex - 1)
+    }
+    
+    public func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
+        guard let viewController = viewController as? GalleryItemViewController else {
+            preconditionFailure("VC must be GalleryItemViewController")
+        }
+        guard viewController.itemIndex < itemsCount - 1 else {
+            return nil
+        }
+        return makeItemVC(index: viewController.itemIndex + 1)
+    }
+}
+
+extension GalleryViewController: UIPageViewControllerDelegate {
+    public func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
+        currentItemViewController.content.galleryContentWillDisappear()
+    }
+    
+    public func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating finished: Bool, previousViewControllers: [UIViewController], transitionCompleted completed: Bool) {
+        currentItemViewController.content.galleryContentDidAppear()
+    }
+}
+
+extension GalleryViewController: GalleryItemViewControllerDelegate {
+    func isGalleryBeingPresented() -> Bool {
+        isBeingPresented
+    }
+    
+    func addPresentationAnimationCompletion(_ block: @escaping () -> Void) {
+        presentationAnimationCompletionHandlers.append(block)
+    }
+    
+    func galleryItemClose(_ item: GalleryItemViewController) {
+        dismiss(animated: true)
+    }
+    
+    func galleryItemApplicationActivities(_ item: GalleryItemViewController) -> [UIActivity]? {
+        galleryDataSource.galleryApplicationActivities(forItemAt: item.itemIndex)
+    }
+}
+
+extension GalleryViewController: UIViewControllerTransitioningDelegate {
+    public func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        if let sourceView = galleryDataSource.galleryContentTransitionSourceView(forItemAt: initialItemIndex) {
+            return GalleryPresentationAnimationController(sourceView: sourceView)
+        } else {
+            return nil
+        }
+    }
+    
+    public func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+        if let sourceView = galleryDataSource.galleryContentTransitionSourceView(forItemAt: currentItemViewController.itemIndex) {
+            let translation: CGPoint?
+            let velocity: CGPoint?
+            if let dismissInteraction,
+               dismissInteraction.isActive {
+                translation = dismissInteraction.dismissTranslation
+                velocity = dismissInteraction.dismissVelocity
+            } else {
+                translation = nil
+                velocity = nil
+            }
+            return GalleryDismissAnimationController(sourceView: sourceView, interactiveTranslation: translation, interactiveVelocity: velocity)
+        } else {
+            return nil
+        }
+    }
+}

Packages/GalleryVC/Tests/GalleryVCTests/GalleryVCTests.swift

@@ -0,0 +1,12 @@
+import XCTest
+@testable import GalleryVC
+
+final class GalleryVCTests: XCTestCase {
+    func testExample() throws {
+        // XCTest Documentation
+        // https://developer.apple.com/documentation/xctest
+
+        // Defining Test Cases and Test Methods
+        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+    }
+}

Packages/InstanceFeatures/Sources/InstanceFeatures/InstanceFeatures.swift

@@ -10,9 +10,8 @@ import Foundation
 import Combine
 import Pachyderm
 
-public class InstanceFeatures: ObservableObject {
-    private static let pleromaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; pleroma (.*)\\)", options: .caseInsensitive)
-    private static let akkomaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; akkoma (.*)\\)", options: .caseInsensitive)
+public final class InstanceFeatures: ObservableObject {
+    private static let pleromaVersionRegex = try! NSRegularExpression(pattern: "\\(compatible; (pleroma|akkoma) (.*)\\)", options: .caseInsensitive)
     
     private let _featuresUpdated = PassthroughSubject<Void, Never>()
     public var featuresUpdated: some Publisher<Void, Never> { _featuresUpdated }
@@ -22,16 +21,29 @@ public class InstanceFeatures: ObservableObject {
     @Published public private(set) var charsReservedPerURL = 23
     @Published public private(set) var maxPollOptionChars: Int?
     @Published public private(set) var maxPollOptionsCount: Int?
+    @Published public private(set) var mediaAttachmentsConfiguration: InstanceV1.MediaAttachmentsConfiguration?
+    @Published public private(set) var translation: Bool = false
     
     public var localOnlyPosts: Bool {
         switch instanceType {
         case .mastodon(.hometown(_), _), .mastodon(.glitch, _):
             return true
+        case .pleroma(.akkoma(_)):
+            return true
         default:
             return false
         }
     }
     
+    /// Instance types that use a separate visibility to indicate local-only posts.
+    public var localOnlyPostsVisibility: Bool {
+        if case .pleroma(.akkoma(_)) = instanceType {
+            return true
+        } else {
+            return false
+        }
+    }
+    
     public var mastodonAttachmentRestrictions: Bool {
         instanceType.isMastodon
     }
@@ -145,7 +157,64 @@ public class InstanceFeatures: ObservableObject {
     }
     
     public var needsEditAttachmentsInSeparateRequest: Bool {
-        instanceType.isPleroma(.akkoma(nil))
+        instanceType.isPleroma
+    }
+    
+    public var composeDirectStatuses: Bool {
+        if case .pixelfed = instanceType {
+            return false
+        } else {
+            return true
+        }
+    }
+    
+    public var searchOperators: Bool {
+        hasMastodonVersion(4, 2, 0)
+    }
+    
+    public var hasServerPreferences: Bool {
+        hasMastodonVersion(2, 8, 0)
+    }
+    
+    public var listRepliesPolicy: Bool {
+        hasMastodonVersion(3, 3, 0)
+    }
+    
+    public var exclusiveLists: Bool {
+        hasMastodonVersion(4, 2, 0) || instanceType.isMastodon(.hometown(nil))
+    }
+    
+    public var pushNotificationTypeStatus: Bool {
+        hasMastodonVersion(3, 3, 0)
+    }
+    
+    public var pushNotificationTypeFollowRequest: Bool {
+        hasMastodonVersion(3, 1, 0)
+    }
+    
+    public var pushNotificationTypeUpdate: Bool {
+        hasMastodonVersion(3, 5, 0)
+    }
+    
+    public var pushNotificationPolicy: Bool {
+        hasMastodonVersion(3, 5, 0)
+    }
+    
+    public var pushNotificationPolicyMissingFromResponse: Bool {
+        switch instanceType {
+        case .mastodon(_, let version):
+            return version >= Version(3, 5, 0) && version < Version(4, 1, 0)
+        default:
+            return false
+        }
+    }
+    
+    public var instanceAnnouncements: Bool {
+        hasMastodonVersion(3, 1, 0)
+    }
+    
+    public var emojiReactionNotifications: Bool {
+        instanceType.isPleroma
     }
     
     public init() {
@@ -179,23 +248,20 @@ public class InstanceFeatures: ObservableObject {
                 mastoVersion = Version(string: ver)
             }
             instanceType = .mastodon(.hometown(hometownVersion), mastoVersion)
-        } else if ver.contains("pleroma") {
+        } else if let match = InstanceFeatures.pleromaVersionRegex.firstMatch(in: ver, range: NSRange(location: 0, length: ver.utf16.count)) {
             var pleromaVersion: Version?
-            if let match = InstanceFeatures.pleromaVersionRegex.firstMatch(in: ver, range: NSRange(location: 0, length: ver.utf16.count)) {
-                pleromaVersion = Version(string: (ver as NSString).substring(with: match.range(at: 1)))
+            let type = (ver as NSString).substring(with: match.range(at: 1))
+            pleromaVersion = Version(string: (ver as NSString).substring(with: match.range(at: 2)))
+            if type == "akkoma" {
+                instanceType = .pleroma(.akkoma(pleromaVersion))
+            } else {
+                instanceType = .pleroma(.vanilla(pleromaVersion))
             }
-            instanceType = .pleroma(.vanilla(pleromaVersion))
-        } else if ver.contains("akkoma") {
-            var akkomaVersion: Version?
-            if let match = InstanceFeatures.akkomaVersionRegex.firstMatch(in: ver, range: NSRange(location: 0, length: ver.utf16.count)) {
-                akkomaVersion = Version(string: (ver as NSString).substring(with: match.range(at: 1)))
-            }
-            instanceType = .pleroma(.akkoma(akkomaVersion))
         } else if ver.contains("pixelfed") {
             instanceType = .pixelfed
         } else if nodeInfo?.software.name == "gotosocial" {
             instanceType = .gotosocial
-        } else if ver.contains("firefish") || ver.contains("calckey") {
+        } else if ver.contains("firefish") || ver.contains("iceshrimp") || ver.contains("calckey") {
             instanceType = .firefish(nodeInfo?.software.version)
         } else {
             instanceType = .mastodon(.vanilla, Version(string: ver))
@@ -207,6 +273,8 @@ public class InstanceFeatures: ObservableObject {
             maxPollOptionChars = pollsConfig.maxCharactersPerOption
             maxPollOptionsCount = pollsConfig.maxOptions
         }
+        mediaAttachmentsConfiguration = instance.configuration?.mediaAttachments
+        translation = instance.translation
         
         _featuresUpdated.send()
     }

Packages/InstanceFeatures/Sources/InstanceFeatures/InstanceInfo.swift

@@ -9,26 +9,39 @@ import Foundation
 import Pachyderm
 
 public struct InstanceInfo {
-    public let version: String
-    public let maxStatusCharacters: Int?
-    public let configuration: Instance.Configuration?
-    public let pollsConfiguration: Instance.PollsConfiguration?
+    public var version: String
+    public var maxStatusCharacters: Int?
+    public var configuration: InstanceV1.Configuration?
+    public var pollsConfiguration: InstanceV1.PollsConfiguration?
+    public var translation: Bool
     
-    public init(version: String, maxStatusCharacters: Int?, configuration: Instance.Configuration?, pollsConfiguration: Instance.PollsConfiguration?) {
+    public init(
+        version: String,
+        maxStatusCharacters: Int?,
+        configuration: InstanceV1.Configuration?,
+        pollsConfiguration: InstanceV1.PollsConfiguration?,
+        translation: Bool
+    ) {
         self.version = version
         self.maxStatusCharacters = maxStatusCharacters
         self.configuration = configuration
         self.pollsConfiguration = pollsConfiguration
+        self.translation = translation
     }
 }
 
 extension InstanceInfo {
-    public init(instance: Instance) {
+    public init(v1 instance: InstanceV1) {
         self.init(
             version: instance.version,
             maxStatusCharacters: instance.maxStatusCharacters,
             configuration: instance.configuration,
-            pollsConfiguration: instance.pollsConfiguration
+            pollsConfiguration: instance.pollsConfiguration,
+            translation: false
         )
     }
+    
+    public mutating func update(v2: InstanceV2) {
+        translation = v2.configuration.translation.enabled
+    }
 }

Packages/MatchedGeometryPresentation/Sources/MatchedGeometryPresentation/MatchedGeometryViewController.swift

@@ -225,6 +225,7 @@ class MatchedGeometryDismissAnimationController<Content: View>: NSObject, UIView
         animator.addCompletion { _ in
             transitionContext.completeTransition(true)
             matchedGeomVC.state.animating = false
+            matchedGeomVC.state.mode = .idle
         }
         animator.startAnimation()
     }

Packages/Pachyderm/.swiftpm/xcode/xcshareddata/xcschemes/Pachyderm.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1400"
+   LastUpgradeVersion = "1500"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Packages/Pachyderm/Package.swift

@@ -6,7 +6,7 @@ import PackageDescription
 let package = Package(
     name: "Pachyderm",
     platforms: [
-        .iOS(.v14),
+        .iOS(.v15),
     ],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.

Packages/Pachyderm/Sources/Pachyderm/Client.swift

@@ -12,7 +12,7 @@ import WebURL
 /**
  The base Mastodon API client.
  */
-public class Client {
+public struct Client: Sendable {
     
     public typealias Callback<Result: Decodable> = (Response<Result>) -> Void
     
@@ -20,8 +20,6 @@ public class Client {
     let session: URLSession
     
     public var accessToken: String?
-    
-    public var appID: String?
     public var clientID: String?
     public var clientSecret: String?
     
@@ -44,7 +42,8 @@ public class Client {
             } else if let date = iso8601.date(from: str) {
                 return date
             } else {
-                throw DecodingError.typeMismatch(Date.self, .init(codingPath: container.codingPath, debugDescription: "unexpected date format"))
+//                throw DecodingError.typeMismatch(Date.self, .init(codingPath: container.codingPath, debugDescription: "unexpected date format: \(str)"))
+                return Date(timeIntervalSinceReferenceDate: 0)
             }
         })
         
@@ -61,9 +60,11 @@ public class Client {
         return encoder
     }()
     
-    public init(baseURL: URL, accessToken: String? = nil, session: URLSession = .shared) {
+    public init(baseURL: URL, accessToken: String? = nil, clientID: String? = nil, clientSecret: String? = nil, session: URLSession = .shared) {
         self.baseURL = baseURL
         self.accessToken = accessToken
+        self.clientID = clientID
+        self.clientSecret = clientSecret
         self.session = session
     }
     
@@ -105,6 +106,20 @@ public class Client {
         return task
     }
     
+    @discardableResult
+    public func run<Result: Sendable>(_ request: Request<Result>) async throws -> (Result, Pagination?) {
+        return try await withCheckedThrowingContinuation { continuation in
+            run(request) { response in
+                switch response {
+                case .failure(let error):
+                    continuation.resume(throwing: error)
+                case .success(let result, let pagination):
+                    continuation.resume(returning: (result, pagination))
+                }
+            }
+        }
+    }
+    
     func createURLRequest<Result>(request: Request<Result>) -> URLRequest? {
         guard var components = URLComponents(url: baseURL, resolvingAgainstBaseURL: true) else { return nil }
         components.path = request.endpoint.path
@@ -113,6 +128,7 @@ public class Client {
         var urlRequest = URLRequest(url: url, timeoutInterval: timeoutInterval)
         urlRequest.httpMethod = request.method.name
         urlRequest.httpBody = request.body.data
+        urlRequest.setValue("application/json", forHTTPHeaderField: "Accept")
         for (name, value) in request.headers {
             urlRequest.setValue(value, forHTTPHeaderField: name)
         }
@@ -121,6 +137,8 @@ public class Client {
         }
         if let accessToken = accessToken {
             urlRequest.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
+            // We consider authenticated requests to be user-initiated.
+            urlRequest.attribution = .user
         }
         return urlRequest
     }
@@ -133,14 +151,7 @@ public class Client {
                 "scopes" => scopes.scopeString,
                 "website" => website?.absoluteString
             ]))
-        run(request) { result in
-            defer { completion(result) }
-            guard case let .success(application, _) = result else { return }
-            
-            self.appID = application.id
-            self.clientID = application.clientID
-            self.clientSecret = application.clientSecret
-        }
+        run(request, completion: completion)
     }
     
     public func getAccessToken(authorizationCode: String, redirectURI: String, scopes: [Scope], completion: @escaping Callback<LoginSettings>) {
@@ -152,12 +163,7 @@ public class Client {
                 "redirect_uri" => redirectURI,
                 "scope" => scopes.scopeString,
             ]))
-        run(request) { result in
-            defer { completion(result) }
-            guard case let .success(loginSettings, _) = result else { return }
-            
-            self.accessToken = loginSettings.accessToken
-        }
+        run(request, completion: completion)
     }
     
     public func revokeAccessToken() async throws {
@@ -181,21 +187,16 @@ public class Client {
         })
     }
     
-    public func nodeInfo(completion: @escaping Callback<NodeInfo>) {
+    public func nodeInfo() async throws -> NodeInfo {
         let wellKnown = Request<WellKnown>(method: .get, path: "/.well-known/nodeinfo")
-        run(wellKnown) { result in
-            switch result {
-            case let .failure(error):
-                completion(.failure(error))
-                
-            case let .success(wellKnown, _):
-                if let url = wellKnown.links.first(where: { $0.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0" }),
-                   let href = WebURL(url.href),
-                   href.host == WebURL(self.baseURL)?.host {
-                    let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: href.path))
-                    self.run(nodeInfo, completion: completion)
-                }
-            }
+        let wellKnownResults = try await run(wellKnown).0
+        if let url = wellKnownResults.links.first(where: { $0.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0" }),
+           let href = WebURL(url.href),
+           href.host == WebURL(self.baseURL)?.host {
+            let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: href.path))
+            return try await run(nodeInfo).0
+        } else {
+            throw NodeInfoError.noWellKnownLink
         }
     }
     
@@ -214,14 +215,22 @@ public class Client {
         return Request<[Relationship]>(method: .get, path: "/api/v1/accounts/relationships", queryParameters: "id" => accounts)
     }
     
-    public static func getInstance() -> Request<Instance> {
-        return Request<Instance>(method: .get, path: "/api/v1/instance")
+    public static func getInstanceV1() -> Request<InstanceV1> {
+        return Request<InstanceV1>(method: .get, path: "/api/v1/instance")
+    }
+    
+    public static func getInstanceV2() -> Request<InstanceV2> {
+        return Request<InstanceV2>(method: .get, path: "/api/v2/instance")
     }
     
     public static func getCustomEmoji() -> Request<[Emoji]> {
         return Request<[Emoji]>(method: .get, path: "/api/v1/custom_emojis")
     }
     
+    public static func getPreferences() -> Request<Preferences> {
+        return Request(method: .get, path: "/api/v1/preferences")
+    }
+    
     // MARK: - Accounts
     public static func getAccount(id: String) -> Request<Account> {
         return Request<Account>(method: .get, path: "/api/v1/accounts/\(id)")
@@ -333,6 +342,10 @@ public class Client {
     }
     
     // MARK: - Notifications
+    public static func getNotification(id: String) -> Request<Notification> {
+        return Request(method: .get, path: "/api/v1/notifications/\(id)")
+    }
+    
     public static func getNotifications(allowedTypes: [Notification.Kind], range: RequestRange = .default) -> Request<[Notification]> {
         var request = Request<[Notification]>(method: .get, path: "/api/v1/notifications", queryParameters:
             "types" => allowedTypes.map { $0.rawValue }
@@ -395,7 +408,7 @@ public class Client {
                                     mediaIDs: [String]? = nil,
                                     sensitive: Bool? = nil,
                                     spoilerText: String? = nil,
-                                    visibility: Visibility? = nil,
+                                    visibility: String? = nil,
                                     language: String? = nil, // language supported by mastodon and akkoma
                                     pollOptions: [String]? = nil,
                                     pollExpiresIn: Int? = nil,
@@ -408,7 +421,7 @@ public class Client {
             "in_reply_to_id" => inReplyTo,
             "sensitive" => sensitive,
             "spoiler_text" => spoilerText,
-            "visibility" => visibility?.rawValue,
+            "visibility" => visibility,
             "language" => language,
             "poll[expires_in]" => pollExpiresIn,
             "poll[multiple]" => pollMultiple,
@@ -575,4 +588,15 @@ extension Client {
         case invalidModel(Swift.Error)
         case mastodonError(Int, String)
     }
+    
+    enum NodeInfoError: LocalizedError {
+        case noWellKnownLink
+        
+        var errorDescription: String? {
+            switch self {
+            case .noWellKnownLink:
+                return "No well-known link"
+            }
+        }
+    }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Announcement.swift

@@ -0,0 +1,99 @@
+//
+//  Announcement.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 4/16/24.
+//
+
+import Foundation
+import WebURL
+
+public struct Announcement: Decodable, Sendable, Hashable, Identifiable {
+    public let id: String
+    public let content: String
+    public let startsAt: Date?
+    public let endsAt: Date?
+    public let allDay: Bool
+    public let publishedAt: Date
+    public let updatedAt: Date
+    public let read: Bool?
+    public let mentions: [Account]
+    public let statuses: [Status]
+    public let tags: [Hashtag]
+    public let emojis: [Emoji]
+    public var reactions: [Reaction]
+    
+    public static func all() -> Request<[Announcement]> {
+        return Request(method: .get, path: "/api/v1/announcements")
+    }
+    
+    public static func dismiss(id: String) -> Request<Empty> {
+        return Request(method: .post, path: "/api/v1/announcements/\(id)/dismiss")
+    }
+    
+    public static func react(id: String, name: String) -> Request<Empty> {
+        return Request(method: .put, path: "/api/v1/announcements/\(id)/reactions/\(name)")
+    }
+    
+    public static func unreact(id: String, name: String) -> Request<Empty> {
+        return Request(method: .delete, path: "/api/v1/announcements/\(id)/reactions/\(name)")
+    }
+
+    enum CodingKeys: String, CodingKey {
+        case id
+        case content
+        case startsAt = "starts_at"
+        case endsAt = "ends_at"
+        case allDay = "all_day"
+        case publishedAt = "published_at"
+        case updatedAt = "updated_at"
+        case read
+        case mentions
+        case statuses
+        case tags
+        case emojis
+        case reactions
+    }
+}
+
+extension Announcement {
+    public struct Account: Decodable, Sendable, Hashable {
+        public let id: String
+        public let username: String
+        public let url: WebURL
+        public let acct: String
+    }
+}
+
+extension Announcement {
+    public struct Status: Decodable, Sendable, Hashable {
+        public let id: String
+        public let url: WebURL
+    }
+}
+
+extension Announcement {
+    public struct Reaction: Decodable, Sendable, Hashable {
+        public let name: String
+        public var count: Int
+        public var me: Bool?
+        public let url: URL?
+        public let staticURL: URL?
+        
+        public init(name: String, count: Int, me: Bool?, url: URL?, staticURL: URL?) {
+            self.name = name
+            self.count = count
+            self.me = me
+            self.url = url
+            self.staticURL = staticURL
+        }
+        
+        enum CodingKeys: String, CodingKey {
+            case name
+            case count
+            case me
+            case url
+            case staticURL = "static_url"
+        }
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Attachment.swift

@@ -25,6 +25,17 @@ public struct Attachment: Codable, Sendable {
             ], nil))
     }
     
+    public init(id: String, kind: Attachment.Kind, url: URL, remoteURL: URL? = nil, previewURL: URL? = nil, meta: Attachment.Metadata? = nil, description: String? = nil, blurHash: String? = nil) {
+        self.id = id
+        self.kind = kind
+        self.url = url
+        self.remoteURL = remoteURL
+        self.previewURL = previewURL
+        self.meta = meta
+        self.description = description
+        self.blurHash = blurHash
+    }
+    
     public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         self.id = try container.decode(String.self, forKey: .id)

Packages/Pachyderm/Sources/Pachyderm/Model/Card.swift

@@ -26,6 +26,38 @@ public struct Card: Codable, Sendable {
     /// Only present when returned from the trending links endpoint
     public let history: [History]?
     
+    public init(
+        url: WebURL,
+        title: String,
+        description: String,
+        image: WebURL? = nil,
+        kind: Card.Kind,
+        authorName: String? = nil,
+        authorURL: WebURL? = nil,
+        providerName: String? = nil,
+        providerURL: WebURL? = nil,
+        html: String? = nil,
+        width: Int? = nil,
+        height: Int? = nil,
+        blurhash: String? = nil,
+        history: [History]? = nil
+    ) {
+        self.url = url
+        self.title = title
+        self.description = description
+        self.image = image
+        self.kind = kind
+        self.authorName = authorName
+        self.authorURL = authorURL
+        self.providerName = providerName
+        self.providerURL = providerURL
+        self.html = html
+        self.width = width
+        self.height = height
+        self.blurhash = blurhash
+        self.history = history
+    }
+
     public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
         

Packages/Pachyderm/Sources/Pachyderm/Model/Emoji.swift

@@ -43,8 +43,13 @@ extension Emoji: CustomDebugStringConvertible {
     }
 }
 
-extension Emoji: Equatable {
+extension Emoji: Equatable, Hashable {
     public static func ==(lhs: Emoji, rhs: Emoji) -> Bool {
         return lhs.shortcode == rhs.shortcode && lhs.url == rhs.url
     }
+    
+    public func hash(into hasher: inout Hasher) {
+        hasher.combine(shortcode)
+        hasher.combine(url)
+    }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/InstanceV1.swift

@@ -1,5 +1,5 @@
 //
-//  Instance.swift
+//  InstanceV1.swift
 //  Pachyderm
 //
 //  Created by Shadowfacts on 9/9/18.
@@ -8,7 +8,7 @@
 
 import Foundation
 
-public struct Instance: Decodable, Sendable {
+public struct InstanceV1: Decodable, Sendable {
     public let uri: String
     public let title: String
     public let description: String
@@ -92,7 +92,7 @@ public struct Instance: Decodable, Sendable {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
     public struct Stats: Decodable, Sendable {
         public let domainCount: Int?
         public let statusCount: Int?
@@ -106,7 +106,7 @@ extension Instance {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
     public struct Configuration: Codable, Sendable {
         public let statuses: StatusesConfiguration
         public let mediaAttachments: MediaAttachmentsConfiguration
@@ -121,7 +121,8 @@ extension Instance {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
+    // note: also used by InstanceV2
     public struct StatusesConfiguration: Codable, Sendable {
         public let maxCharacters: Int
         public let maxMediaAttachments: Int
@@ -135,7 +136,8 @@ extension Instance {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
+    // note: also used by InstanceV2
     public struct MediaAttachmentsConfiguration: Codable, Sendable {
         public let supportedMIMETypes: [String]
         public let imageSizeLimit: Int
@@ -155,7 +157,8 @@ extension Instance {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
+    // note: also used by InstanceV2
     public struct PollsConfiguration: Codable, Sendable {
         public let maxOptions: Int
         public let maxCharactersPerOption: Int
@@ -171,7 +174,8 @@ extension Instance {
     }
 }
 
-extension Instance {
+extension InstanceV1 {
+    // note: also used by InstanceV2
     public struct Rule: Decodable, Identifiable, Sendable {
         public let id: String
         public let text: String

Packages/Pachyderm/Sources/Pachyderm/Model/InstanceV2.swift

@@ -0,0 +1,125 @@
+//
+//  InstanceV2.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 12/4/23.
+//
+
+import Foundation
+
+public struct InstanceV2: Decodable, Sendable {
+    public let domain: String
+    public let title: String
+    public let version: String
+    public let sourceURL: String
+    public let description: String
+    public let usage: Usage
+    public let thumbnail: Thumbnail
+    public let languages: [String]
+    public let configuration: Configuration
+    public let registrations: Registrations
+    public let contact: Contact
+    public let rules: [InstanceV1.Rule]
+    
+    private enum CodingKeys: String, CodingKey {
+        case domain
+        case title
+        case version
+        case sourceURL = "source_url"
+        case description
+        case usage
+        case thumbnail
+        case languages
+        case configuration
+        case registrations
+        case contact
+        case rules
+    }
+}
+
+extension InstanceV2 {
+    public struct Usage: Decodable, Sendable {
+        public let users: Users
+    }
+    public struct Users: Decodable, Sendable {
+        public let activeMonth: Int
+        private enum CodingKeys: String, CodingKey {
+            case activeMonth = "active_month"
+        }
+    }
+}
+
+extension InstanceV2 {
+    public struct Thumbnail: Decodable, Sendable {
+        public let url: String
+        public let blurhash: String?
+        public let versions: ThumbnailVersions?
+    }
+    
+    public struct ThumbnailVersions: Decodable, Sendable {
+        public let oneX: String?
+        public let twoX: String?
+        private enum CodingKeys: String, CodingKey {
+            case oneX = "@1x"
+            case twoX = "@2x"
+        }
+    }
+}
+
+extension InstanceV2 {
+    public struct Configuration: Decodable, Sendable {
+        public let urls: URLs
+        public let accounts: Accounts
+        public let statuses: InstanceV1.StatusesConfiguration
+        public let mediaAttachments: InstanceV1.MediaAttachmentsConfiguration
+        public let polls: InstanceV1.PollsConfiguration
+        public let translation: Translation
+        
+        private enum CodingKeys: String, CodingKey {
+            case urls
+            case accounts
+            case statuses
+            case mediaAttachments = "media_attachments"
+            case polls
+            case translation
+        }
+    }
+    
+    public struct URLs: Decodable, Sendable {
+        // the docs incorrectly say the key for this is "streaming_api"
+        public let streaming: String
+    }
+    
+    public struct Accounts: Decodable, Sendable {
+        public let maxFeaturedTags: Int
+        
+        private enum CodingKeys: String, CodingKey {
+            case maxFeaturedTags = "max_featured_tags"
+        }
+    }
+    
+    public struct Translation: Decodable, Sendable {
+        public let enabled: Bool
+    }
+}
+
+extension InstanceV2 {
+    public struct Registrations: Decodable, Sendable {
+        public let enabled: Bool
+        public let approvalRequired: Bool
+        public let message: String?
+        
+        private enum CodingKeys: String, CodingKey {
+            case enabled
+            case approvalRequired = "approval_required"
+            case message
+        }
+    }
+}
+
+extension InstanceV2 {
+    public struct Contact: Decodable, Sendable {
+        public let email: String
+        public let account: Account?
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/List.swift

@@ -11,14 +11,18 @@ import Foundation
 public struct List: ListProtocol, Decodable, Equatable, Hashable, Sendable {
     public let id: String
     public let title: String
+    public let replyPolicy: ReplyPolicy?
+    public let exclusive: Bool?
     
     public var timeline: Timeline {
         return .list(id: id)
     }
     
-    public init(id: String, title: String) {
+    public init(id: String, title: String, replyPolicy: ReplyPolicy?, exclusive: Bool?) {
         self.id = id
         self.title = title
+        self.replyPolicy = replyPolicy
+        self.exclusive = exclusive
     }
     
     public static func ==(lhs: List, rhs: List) -> Bool {
@@ -36,8 +40,15 @@ public struct List: ListProtocol, Decodable, Equatable, Hashable, Sendable {
         return request
     }
     
-    public static func update(_ listID: String, title: String) -> Request<List> {
-        return Request<List>(method: .put, path: "/api/v1/lists/\(listID)", body: ParametersBody(["title" => title]))
+    public static func update(_ listID: String, title: String, replyPolicy: ReplyPolicy?, exclusive: Bool?) -> Request<List> {
+        var params = ["title" => title]
+        if let replyPolicy {
+            params.append("replies_policy" => replyPolicy.rawValue)
+        }
+        if let exclusive {
+            params.append("exclusive" => exclusive)
+        }
+        return Request<List>(method: .put, path: "/api/v1/lists/\(listID)", body: ParametersBody(params))
     }
     
     public static func delete(_ listID: String) -> Request<Empty> {
@@ -59,5 +70,13 @@ public struct List: ListProtocol, Decodable, Equatable, Hashable, Sendable {
     private enum CodingKeys: String, CodingKey {
         case id
         case title
+        case replyPolicy = "replies_policy"
+        case exclusive
+    }
+}
+
+extension List {
+    public enum ReplyPolicy: String, Codable, Hashable, CaseIterable, Sendable {
+        case followed, list, none
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/MastodonError.swift

@@ -11,7 +11,20 @@ import Foundation
 struct MastodonError: Decodable, CustomStringConvertible {
     var description: String
     
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        if let error = try container.decodeIfPresent(String.self, forKey: .error) {
+            self.description = error
+        } else if let message = try container.decodeIfPresent(String.self, forKey: .message) {
+            self.description = message
+        } else {
+            throw DecodingError.keyNotFound(CodingKeys.error, .init(codingPath: container.codingPath, debugDescription: "Missing error or message key"))
+        }
+    }
+    
     private enum CodingKeys: String, CodingKey {
-        case description = "error"
+        case error
+        // used by pixelfed
+        case message
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Mention.swift

@@ -21,7 +21,12 @@ public struct Mention: Codable, Sendable {
         self.username = try container.decode(String.self, forKey: .username)
         self.acct = try container.decode(String.self, forKey: .acct)
         self.id = try container.decode(String.self, forKey: .id)
-        self.url = try container.decode(WebURL.self, forKey: .url)
+        do {
+            self.url = try container.decode(WebURL.self, forKey: .url)
+        } catch {
+            let s = try? container.decode(String.self, forKey: .url)
+            throw DecodingError.dataCorruptedError(forKey: .url, in: container, debugDescription: "Could not decode URL '\(s ?? "<failed to decode string>")'")
+        }
     }
     
     public init(url: WebURL, username: String, acct: String, id: String) {

Packages/Pachyderm/Sources/Pachyderm/Model/Notification.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import WebURL
 
 public struct Notification: Decodable, Sendable {
     public let id: String
@@ -14,6 +15,10 @@ public struct Notification: Decodable, Sendable {
     public let createdAt: Date
     public let account: Account
     public let status: Status?
+    // Only present for pleroma emoji reactions
+    // Either an emoji or :shortcode: (for akkoma custom emoji reactions)
+    public let emoji: String?
+    public let emojiURL: WebURL?
     
     public init(from decoder: Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
@@ -27,6 +32,8 @@ public struct Notification: Decodable, Sendable {
         self.createdAt = try container.decode(Date.self, forKey: .createdAt)
         self.account = try container.decode(Account.self, forKey: .account)
         self.status = try container.decodeIfPresent(Status.self, forKey: .status)
+        self.emoji = try container.decodeIfPresent(String.self, forKey: .emoji)
+        self.emojiURL = try container.decodeIfPresent(WebURL.self, forKey: .emojiURL)
     }
 
     public static func dismiss(id notificationID: String) -> Request<Empty> {
@@ -39,6 +46,8 @@ public struct Notification: Decodable, Sendable {
         case createdAt = "created_at"
         case account
         case status
+        case emoji
+        case emojiURL = "emoji_url"
     }
 }
 
@@ -52,6 +61,7 @@ extension Notification {
         case poll
         case update
         case status
+        case emojiReaction = "pleroma:emoji_reaction"
         case unknown
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Preferences.swift

@@ -0,0 +1,37 @@
+//
+//  Preferences.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 10/26/23.
+//
+
+import Foundation
+
+public struct Preferences: Codable, Sendable {
+    public let postingDefaultVisibility: Visibility
+    public let postingDefaultSensitive: Bool
+    public let postingDefaultLanguage: String
+    // Whether posts federate or not (local-only) on Hometown
+    public let postingDefaultFederation: Bool?
+    public let readingExpandMedia: ExpandMedia
+    public let readingExpandSpoilers: Bool
+    public let readingAutoplayGifs: Bool
+    
+    enum CodingKeys: String, CodingKey {
+        case postingDefaultVisibility = "posting:default:visibility"
+        case postingDefaultSensitive = "posting:default:sensitive"
+        case postingDefaultLanguage = "posting:default:language"
+        case postingDefaultFederation = "posting:default:federation"
+        case readingExpandMedia = "reading:expand:media"
+        case readingExpandSpoilers = "reading:expand:spoilers"
+        case readingAutoplayGifs = "reading:autoplay:gifs"
+    }
+}
+
+extension Preferences {
+    public enum ExpandMedia: String, Codable, Sendable {
+        case `default`
+        case always = "show_all"
+        case never = "hide_all"
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Protocols/ListProtocol.swift

@@ -10,4 +10,6 @@ import Foundation
 public protocol ListProtocol {
     var id: String { get }
     var title: String { get }
+    var replyPolicy: List.ReplyPolicy? { get }
+    var exclusive: Bool? { get }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/PushNotification.swift

@@ -0,0 +1,46 @@
+//
+//  PushNotification.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 4/9/24.
+//
+
+import Foundation
+import WebURL
+
+public struct PushNotification: Decodable {
+    public let accessToken: String
+    public let preferredLocale: String
+    public let notificationID: String
+    public let notificationType: Notification.Kind
+    public let icon: WebURL
+    public let title: String
+    public let body: String
+    
+    public init(from decoder: any Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.accessToken = try container.decode(String.self, forKey: .accessToken)
+        self.preferredLocale = try container.decode(String.self, forKey: .preferredLocale)
+        // this should be a string, but mastodon encodes it as a json number
+        if let s = try? container.decode(String.self, forKey: .notificationID) {
+            self.notificationID = s
+        } else {
+            let i = try container.decode(Int.self, forKey: .notificationID)
+            self.notificationID = i.description
+        }
+        self.notificationType = try container.decode(Notification.Kind.self, forKey: .notificationType)
+        self.icon = try container.decode(WebURL.self, forKey: .icon)
+        self.title = try container.decode(String.self, forKey: .title)
+        self.body = try container.decode(String.self, forKey: .body)
+    }
+    
+    private enum CodingKeys: String, CodingKey {
+        case accessToken = "access_token"
+        case preferredLocale = "preferred_locale"
+        case notificationID = "notification_id"
+        case notificationType = "notification_type"
+        case icon
+        case title
+        case body
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/PushSubscription.swift

@@ -9,16 +9,144 @@
 import Foundation
 
 public struct PushSubscription: Decodable, Sendable {
-    public let id: String
-    public let endpoint: URL
-    public let serverKey: String
-    //    TODO: WTF is this?
-//    public let alerts
+    public var id: String
+    public var endpoint: URL
+    public var serverKey: String
+    public var alerts: Alerts
+    public var policy: Policy
+    
+    public init(from decoder: any Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        // id is documented as being a string, but mastodon returns a json number
+        if let s = try? container.decode(String.self, forKey: .id) {
+            self.id = s
+        } else {
+            let i = try container.decode(Int.self, forKey: .id)
+            self.id = i.description
+        }
+        self.endpoint = try container.decode(URL.self, forKey: .endpoint)
+        self.serverKey = try container.decode(String.self, forKey: .serverKey)
+        self.alerts = try container.decode(PushSubscription.Alerts.self, forKey: .alerts)
+        // added in mastodon 4.1.0
+        self.policy = try container.decodeIfPresent(PushSubscription.Policy.self, forKey: .policy) ?? .all
+    }
+    
+    public static func create(endpoint: URL, publicKey: Data, authSecret: Data, alerts: Alerts, policy: Policy) -> Request<PushSubscription> {
+        return Request(method: .post, path: "/api/v1/push/subscription", body: ParametersBody([
+            "subscription[endpoint]" => endpoint.absoluteString,
+            "subscription[keys][p256dh]" => publicKey.base64EncodedString(),
+            "subscription[keys][auth]" => authSecret.base64EncodedString(),
+            "data[alerts][mention]" => alerts.mention,
+            "data[alerts][status]" => alerts.status,
+            "data[alerts][reblog]" => alerts.reblog,
+            "data[alerts][follow]" => alerts.follow,
+            "data[alerts][follow_request]" => alerts.followRequest,
+            "data[alerts][favourite]" => alerts.favourite,
+            "data[alerts][poll]" => alerts.poll,
+            "data[alerts][update]" => alerts.update,
+            "data[alerts][pleroma:emoji_reaction]" => alerts.emojiReaction,
+            "data[policy]" => policy.rawValue,
+        ]))
+    }
+    
+    public static func update(alerts: Alerts, policy: Policy) -> Request<PushSubscription> {
+        return Request(method: .put, path: "/api/v1/push/subscription", body: ParametersBody([
+            "data[alerts][mention]" => alerts.mention,
+            "data[alerts][status]" => alerts.status,
+            "data[alerts][reblog]" => alerts.reblog,
+            "data[alerts][follow]" => alerts.follow,
+            "data[alerts][follow_request]" => alerts.followRequest,
+            "data[alerts][favourite]" => alerts.favourite,
+            "data[alerts][poll]" => alerts.poll,
+            "data[alerts][update]" => alerts.update,
+            "data[alerts][pleroma:emoji_reaction]" => alerts.emojiReaction,
+            "data[policy]" => policy.rawValue,
+        ]))
+    }
+    
+    public static func delete() -> Request<Empty> {
+        return Request(method: .delete, path: "/api/v1/push/subscription")
+    }
     
     private enum CodingKeys: String, CodingKey {
         case id
         case endpoint
         case serverKey = "server_key"
-//        case alerts
+        case alerts
+        case policy
+    }
+}
+
+extension PushSubscription {
+    public struct Alerts: Decodable, Sendable {
+        public let mention: Bool
+        public let status: Bool
+        public let reblog: Bool
+        public let follow: Bool
+        public let followRequest: Bool
+        public let favourite: Bool
+        public let poll: Bool
+        public let update: Bool
+        public let emojiReaction: Bool
+
+        public init(
+            mention: Bool,
+            status: Bool,
+            reblog: Bool,
+            follow: Bool,
+            followRequest: Bool,
+            favourite: Bool,
+            poll: Bool,
+            update: Bool,
+            emojiReaction: Bool
+        ) {
+            self.mention = mention
+            self.status = status
+            self.reblog = reblog
+            self.follow = follow
+            self.followRequest = followRequest
+            self.favourite = favourite
+            self.poll = poll
+            self.update = update
+            self.emojiReaction = emojiReaction
+        }
+        
+        public init(from decoder: any Decoder) throws {
+            let container: KeyedDecodingContainer<PushSubscription.Alerts.CodingKeys> = try decoder.container(keyedBy: PushSubscription.Alerts.CodingKeys.self)
+            self.mention = try container.decode(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.mention)
+            // status added in mastodon 3.3.0
+            self.status = try container.decodeIfPresent(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.status) ?? false
+            self.reblog = try container.decode(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.reblog)
+            self.follow = try container.decode(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.follow)
+            // follow_request added in 3.1.0
+            self.followRequest = try container.decodeIfPresent(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.followRequest) ?? false
+            self.favourite = try container.decode(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.favourite)
+            self.poll = try container.decode(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.poll)
+            // update added in mastodon 3.5.0
+            self.update = try container.decodeIfPresent(Bool.self, forKey: PushSubscription.Alerts.CodingKeys.update) ?? false
+            // pleroma/akkoma only
+            self.emojiReaction = try container.decodeIfPresent(Bool.self, forKey: .emojiReaction) ?? false
+        }
+        
+        private enum CodingKeys: String, CodingKey {
+            case mention
+            case status
+            case reblog
+            case follow
+            case followRequest = "follow_request"
+            case favourite
+            case poll
+            case update
+            case emojiReaction = "pleroma:emoji_reaction"
+        }
+    }
+}
+
+extension PushSubscription {
+    public enum Policy: String, Decodable, Sendable {
+        case all
+        case followed
+        case followers
+        case none
     }
 }

Packages/Pachyderm/Sources/Pachyderm/Model/Scope.swift

@@ -12,6 +12,7 @@ public enum Scope: String, Sendable {
     case read
     case write
     case follow
+    case push
 }
 
 extension Array where Element == Scope {

Packages/Pachyderm/Sources/Pachyderm/Model/SearchOperatorType.swift

@@ -0,0 +1,19 @@
+//
+//  SearchOperatorType.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 10/1/23.
+//
+
+import Foundation
+
+public enum SearchOperatorType: String, CaseIterable, Equatable, Sendable {
+    case has
+    case `is`
+    case language
+    case from
+    case before
+    case during
+    case after
+    case `in`
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Status.swift

@@ -10,6 +10,9 @@ import Foundation
 import WebURL
 
 public final class Status: StatusProtocol, Decodable, Sendable {
+    /// The pseudo-visibility used by instance types (Akkoma) that overload the visibility for local-only posts.
+    public static let localPostVisibility: String = "local"
+    
     public let id: String
     public let uri: String
     public let url: WebURL?
@@ -43,6 +46,8 @@ public final class Status: StatusProtocol, Decodable, Sendable {
     public let localOnly: Bool?
     public let editedAt: Date?
     
+    public let pleromaExtras: PleromaExtras?
+    
     public var applicationName: String? { application?.name }
     
     public init(from decoder: Decoder) throws {
@@ -63,7 +68,8 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         self.inReplyToID = try container.decodeIfPresent(String.self, forKey: .inReplyToID)
         self.inReplyToAccountID = try container.decodeIfPresent(String.self, forKey: .inReplyToAccountID)
         self.reblog = try container.decodeIfPresent(Status.self, forKey: .reblog)
-        self.content = try container.decode(String.self, forKey: .content)
+        // pixelfed statuses may have null content
+        self.content = try container.decodeIfPresent(String.self, forKey: .content) ?? ""
         self.createdAt = try container.decode(Date.self, forKey: .createdAt)
         self.emojis = try container.decodeIfPresent([Emoji].self, forKey: .emojis) ?? []
         self.reblogsCount = try container.decode(Int.self, forKey: .reblogsCount)
@@ -77,7 +83,7 @@ public final class Status: StatusProtocol, Decodable, Sendable {
             self.visibility = visibility
             self.localOnly = try container.decodeIfPresent(Bool.self, forKey: .localOnly)
         } else if let s = try? container.decode(String.self, forKey: .visibility),
-                  s == "local" {
+                  s == Status.localPostVisibility {
             // hacky workaround for #332, akkoma describes local posts with a separate visibility
             self.visibility = .public
             self.localOnly = true
@@ -94,6 +100,8 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         self.card = try container.decodeIfPresent(Card.self, forKey: .card)
         self.poll = try container.decodeIfPresent(Poll.self, forKey: .poll)
         self.editedAt = try container.decodeIfPresent(Date.self, forKey: .editedAt)
+        
+        self.pleromaExtras = try container.decodeIfPresent(PleromaExtras.self, forKey: .pleromaExtras)
     }
     
     public static func getContext(_ statusID: String) -> Request<ConversationContext> {
@@ -116,6 +124,12 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         return request
     }
     
+    public static func getReactions(_ statusID: String, emoji: String, range: RequestRange = .default) -> Request<[Account]> {
+        var request = Request<[Account]>(method: .get, path: "/api/v1/statuses/\(statusID)/reactions/\(emoji)")
+        request.range = range
+        return request
+    }
+    
     public static func delete(_ statusID: String) -> Request<Empty> {
         return Request<Empty>(method: .delete, path: "/api/v1/statuses/\(statusID)")
     }
@@ -173,6 +187,10 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         return Request(method: .get, path: "/api/v1/statuses/\(statusID)/history")
     }
     
+    public static func translate(_ statusID: String) -> Request<Translation> {
+        return Request(method: .post, path: "/api/v1/statuses/\(statusID)/translate")
+    }
+    
     private enum CodingKeys: String, CodingKey {
         case id
         case uri
@@ -204,7 +222,15 @@ public final class Status: StatusProtocol, Decodable, Sendable {
         case poll
         case localOnly = "local_only"
         case editedAt = "edited_at"
+        
+        case pleromaExtras = "pleroma"
     }
 }
 
 extension Status: Identifiable {}
+
+extension Status {
+    public struct PleromaExtras: Decodable, Sendable {
+        public let context: String?
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/StatusEdit.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct StatusEdit: Decodable {
+public struct StatusEdit: Decodable, Sendable {
     public let content: String
     public let spoilerText: String
     public let sensitive: Bool
@@ -28,10 +28,10 @@ public struct StatusEdit: Decodable {
         case emojis
     }
     
-    public struct Poll: Decodable {
+    public struct Poll: Decodable, Sendable {
         public let options: [Option]
         
-        public struct Option: Decodable {
+        public struct Option: Decodable, Sendable {
             public let title: String
         }
     }

Packages/Pachyderm/Sources/Pachyderm/Model/StatusSource.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public struct StatusSource: Decodable {
+public struct StatusSource: Decodable, Sendable {
     public let id: String
     public let text: String
     public let spoilerText: String

Packages/Pachyderm/Sources/Pachyderm/Model/TimelineMarkers.swift

@@ -7,34 +7,83 @@
 
 import Foundation
 
-public struct TimelineMarkers: Decodable, Sendable {
-    public let home: Marker?
-    public let notifications: Marker?
+public struct TimelineMarkers {
+    private init() {}
     
-    public static func request(timelines: [Timeline]) -> Request<TimelineMarkers> {
-        return Request(method: .get, path: "/api/v1/markers", queryParameters: "timeline[]" => timelines.map(\.rawValue))
+    public static func request<T: TimelineMarkerType>(timeline: T) -> Request<TimelineMarker<T.Payload>> {
+        Request(method: .get, path: "/api/v1/markers", queryParameters: ["timeline[]" => T.name])
     }
     
-    public static func update(timeline: Timeline, lastReadID: String) -> Request<Empty> {
-        return Request(method: .post, path: "/api/v1/markers", body: ParametersBody([
-            "\(timeline.rawValue)[last_read_id]" => lastReadID,
+    public static func update<T: TimelineMarkerType>(timeline: T, lastReadID: String) -> Request<Empty> {
+        Request(method: .post, path: "/api/v1/markers", body: ParametersBody([
+            "\(T.name)[last_read_id]" => lastReadID
         ]))
     }
+}
+
+public struct TimelineMarker<Payload: TimelineMarkerTypePayload>: Decodable, Sendable {
+    let payload: Payload
     
-    public enum Timeline: String {
-        case home
-        case notifications
+    public var lastReadID: String {
+        payload.payload.lastReadID
     }
-    
-    public struct Marker: Decodable, Sendable {
-        public let lastReadID: String
-        public let version: Int
-        public let updatedAt: Date
-        
-        enum CodingKeys: String, CodingKey {
-            case lastReadID = "last_read_id"
-            case version
-            case updatedAt = "updated_at"
-        }
+    public var version: Int {
+        payload.payload.version
+    }
+    public var updatedAt: Date {
+        payload.payload.updatedAt
+    }
+
+    public init(from decoder: any Decoder) throws {
+        self.payload = try Payload(from: decoder)
     }
 }
+
+public protocol TimelineMarkerTypePayload: Decodable, Sendable {
+    var payload: MarkerPayload { get }
+}
+
+public struct HomeMarkerPayload: TimelineMarkerTypePayload {
+    public var home: MarkerPayload
+    public var payload: MarkerPayload { home }
+}
+
+public struct NotificationsMarkerPayload: TimelineMarkerTypePayload {
+    public var notifications: MarkerPayload
+    public var payload: MarkerPayload { notifications }
+}
+
+public struct MarkerPayload: Decodable, Sendable {
+    public let lastReadID: String
+    public let version: Int
+    public let updatedAt: Date
+    
+    enum CodingKeys: String, CodingKey {
+        case lastReadID = "last_read_id"
+        case version
+        case updatedAt = "updated_at"
+    }
+}
+
+public protocol TimelineMarkerType {
+    static var name: String { get }
+    associatedtype Payload: TimelineMarkerTypePayload
+}
+
+extension TimelineMarkerType where Self == HomeMarker {
+    public static var home: Self { .init() }
+}
+
+extension TimelineMarkerType where Self == NotificationsMarker {
+    public static var notifications: Self { .init() }
+}
+
+public struct HomeMarker: TimelineMarkerType {
+    public typealias Payload = HomeMarkerPayload
+    public static var name: String { "home" }
+}
+
+public struct NotificationsMarker: TimelineMarkerType {
+    public typealias Payload = NotificationsMarkerPayload
+    public static var name: String { "notifications" }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Translation.swift

@@ -0,0 +1,22 @@
+//
+//  Translation.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 12/4/23.
+//
+
+import Foundation
+
+public struct Translation: Decodable, Sendable {
+    public let content: String
+    public let spoilerText: String?
+    public let detectedSourceLanguage: String
+    public let provider: String
+    
+    private enum CodingKeys: String, CodingKey {
+        case content
+        case spoilerText
+        case detectedSourceLanguage = "detected_source_language"
+        case provider
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Utilities/InstanceSelector.swift

@@ -49,7 +49,7 @@ public class InstanceSelector {
 }
 
 public extension InstanceSelector {
-    struct Instance: Codable {
+    struct Instance: Codable, Sendable {
         public let domain: String
         public let description: String
         public let proxiedThumbnailURL: URL

Packages/Pachyderm/Sources/Pachyderm/Utilities/NotificationGroup.swift

@@ -7,17 +7,18 @@
 //
 
 import Foundation
+import WebURL
 
 public struct NotificationGroup: Identifiable, Hashable, Sendable {
     public private(set) var notifications: [Notification]
     public let id: String
-    public let kind: Notification.Kind
+    public let kind: Kind
 
-    public init?(notifications: [Notification]) {
+    public init?(notifications: [Notification], kind: Kind) {
         guard !notifications.isEmpty else { return nil }
         self.notifications = notifications
         self.id = notifications.first!.id
-        self.kind = notifications.first!.kind
+        self.kind = kind
     }
     
     public static func ==(lhs: NotificationGroup, rhs: NotificationGroup) -> Bool {
@@ -43,31 +44,62 @@ public struct NotificationGroup: Identifiable, Hashable, Sendable {
     private mutating func append(group: NotificationGroup) {
         notifications.append(contentsOf: group.notifications)
     }
+    
+    private static func groupKind(for notification: Notification) -> Kind {
+        switch notification.kind {
+        case .mention:
+            return .mention
+        case .reblog:
+            return .reblog
+        case .favourite:
+            return .favourite
+        case .follow:
+            return .follow
+        case .followRequest:
+            return .followRequest
+        case .poll:
+            return .poll
+        case .update:
+            return .update
+        case .status:
+            return .status
+        case .emojiReaction:
+            if let emoji = notification.emoji {
+                return .emojiReaction(emoji, notification.emojiURL)
+            } else {
+                return .unknown
+            }
+        case .unknown:
+            return .unknown
+        }
+    }
 
     @MainActor
     public static func createGroups(notifications: [Notification], only allowedTypes: [Notification.Kind]) -> [NotificationGroup] {
         var groups = [NotificationGroup]()
         for notification in notifications {
+            let groupKind = groupKind(for: notification)
+            
             if allowedTypes.contains(notification.kind) {
-                if let lastGroup = groups.last, canMerge(notification: notification, into: lastGroup) {
+                if let lastGroup = groups.last, canMerge(notification: notification, kind: groupKind, into: lastGroup) {
                     groups[groups.count - 1].append(notification)
                     continue
                 } else if groups.count >= 2 {
                     let secondToLastGroup = groups[groups.count - 2]
-                    if allowedTypes.contains(groups[groups.count - 1].kind), canMerge(notification: notification, into: secondToLastGroup) {
+                    if allowedTypes.contains(notification.kind), canMerge(notification: notification, kind: groupKind, into: secondToLastGroup) {
                         groups[groups.count - 2].append(notification)
                         continue
                     }
                 }
             }
             
-            groups.append(NotificationGroup(notifications: [notification])!)
+            groups.append(NotificationGroup(notifications: [notification], kind: groupKind)!)
         }
         return groups
     }
     
-    private static func canMerge(notification: Notification, into group: NotificationGroup) -> Bool {
-        return notification.kind == group.kind && notification.status?.id == group.notifications.first!.status?.id
+    private static func canMerge(notification: Notification, kind: Kind, into group: NotificationGroup) -> Bool {
+        return kind == group.kind && notification.status?.id == group.notifications.first!.status?.id
     }
     
     public static func mergeGroups(first: [NotificationGroup], second: [NotificationGroup], only allowedTypes: [Notification.Kind]) -> [NotificationGroup] {
@@ -82,21 +114,21 @@ public struct NotificationGroup: Identifiable, Hashable, Sendable {
         var second = second
         merged.reserveCapacity(second.count)
         while let firstGroupFromSecond = second.first,
-              allowedTypes.contains(firstGroupFromSecond.kind) {
+              allowedTypes.contains(firstGroupFromSecond.kind.notificationKind) {
             
             second.removeFirst()
             
             guard let lastGroup = merged.last,
-                  allowedTypes.contains(lastGroup.kind) else {
+                  allowedTypes.contains(lastGroup.kind.notificationKind) else {
                 merged.append(firstGroupFromSecond)
                 break
             }
             
-            if canMerge(notification: firstGroupFromSecond.notifications.first!, into: lastGroup) {
+            if canMerge(notification: firstGroupFromSecond.notifications.first!, kind: firstGroupFromSecond.kind, into: lastGroup) {
                 merged[merged.count - 1].append(group: firstGroupFromSecond)
             } else if merged.count >= 2 {
                 let secondToLastGroup = merged[merged.count - 2]
-                if allowedTypes.contains(secondToLastGroup.kind), canMerge(notification: firstGroupFromSecond.notifications.first!, into: secondToLastGroup) {
+                if allowedTypes.contains(secondToLastGroup.kind.notificationKind), canMerge(notification: firstGroupFromSecond.notifications.first!, kind: firstGroupFromSecond.kind, into: secondToLastGroup) {
                     merged[merged.count - 2].append(group: firstGroupFromSecond)
                 } else {
                     merged.append(firstGroupFromSecond)
@@ -109,4 +141,42 @@ public struct NotificationGroup: Identifiable, Hashable, Sendable {
         return merged
     }
     
+    public enum Kind: Sendable, Equatable {
+        case mention
+        case reblog
+        case favourite
+        case follow
+        case followRequest
+        case poll
+        case update
+        case status
+        case emojiReaction(String, WebURL?)
+        case unknown
+        
+        var notificationKind: Notification.Kind {
+            switch self {
+            case .mention:
+                .mention
+            case .reblog:
+                .reblog
+            case .favourite:
+                .favourite
+            case .follow:
+                .follow
+            case .followRequest:
+                .followRequest
+            case .poll:
+                .poll
+            case .update:
+                .update
+            case .status:
+                .status
+            case .emojiReaction(_, _):
+                .emojiReaction
+            case .unknown:
+                .unknown
+            }
+        }
+    }
+    
 }

Packages/PushNotifications/.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

Packages/PushNotifications/.swiftpm/xcode/xcshareddata/xcschemes/PushNotifications.xcscheme

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1530"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "PushNotifications"
+               BuildableName = "PushNotifications"
+               BlueprintName = "PushNotifications"
+               ReferencedContainer = "container:">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "PushNotifications"
+            BuildableName = "PushNotifications"
+            BlueprintName = "PushNotifications"
+            ReferencedContainer = "container:">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Packages/PushNotifications/Package.swift

@@ -0,0 +1,32 @@
+// swift-tools-version: 5.10
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "PushNotifications",
+    platforms: [
+        .iOS(.v15),
+    ],
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "PushNotifications",
+            targets: ["PushNotifications"]),
+    ],
+    dependencies: [
+        .package(path: "../UserAccounts"),
+        .package(path: "../Pachyderm"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "PushNotifications",
+            dependencies: ["UserAccounts", "Pachyderm"]
+        ),
+        .testTarget(
+            name: "PushNotificationsTests",
+            dependencies: ["PushNotifications"]),
+    ]
+)

Packages/PushNotifications/Sources/PushNotifications/DisabledPushManager.swift

@@ -0,0 +1,47 @@
+//
+//  DisabledPushManager.swift
+//  PushNotifications
+//
+//  Created by Shadowfacts on 4/7/24.
+//
+
+import Foundation
+import UserAccounts
+
+class DisabledPushManager: _PushManager {
+    var enabled: Bool {
+        false
+    }
+    
+    var subscriptions: [PushSubscription] {
+        []
+    }
+    
+    func createSubscription(account: UserAccountInfo) async throws -> PushSubscription {
+        throw Disabled()
+    }
+    
+    func removeSubscription(account: UserAccountInfo) {
+    }
+    
+    func updateSubscription(account: UserAccountInfo, alerts: PushSubscription.Alerts, policy: PushSubscription.Policy) {
+    }
+    
+    func pushSubscription(account: UserAccountInfo) -> PushSubscription? {
+        nil
+    }
+    
+    func updateIfNecessary(updateSubscription: @escaping (PushSubscription) async -> Bool) async {
+    }
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data) {
+    }
+    func didFailToRegisterForRemoteNotifications(error: any Error) {
+    }
+    
+    struct Disabled: LocalizedError {
+        var errorDescription: String? {
+            "Push notifications disabled"
+        }
+    }
+}

Packages/PushNotifications/Sources/PushNotifications/PushManager.swift

@@ -0,0 +1,55 @@
+//
+//  PushManager.swift
+//  PushNotifications
+//
+//  Created by Shadowfacts on 4/7/24.
+//
+
+import Foundation
+import OSLog
+import Pachyderm
+import UserAccounts
+
+public struct PushManager {
+    @MainActor
+    public static let shared = createPushManager()
+    
+    public static let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "PushManager")
+    
+    @MainActor
+    public static var captureError: ((any Error) -> Void)?
+
+    private init() {}
+    
+    @MainActor
+    private static func createPushManager() -> any _PushManager {
+        guard let info = Bundle.main.object(forInfoDictionaryKey: "TuskerInfo") as? [String: Any],
+              let host = info["PushProxyHost"] as? String,
+              !host.isEmpty else {
+            logger.debug("Missing proxy info, push disabled")
+            return DisabledPushManager()
+        }
+        var endpoint = URLComponents()
+        endpoint.scheme = "https"
+        endpoint.host = host
+        let url = endpoint.url!
+        logger.debug("Push notifications enabled with proxy \(url.absoluteString, privacy: .public)")
+        return PushManagerImpl(endpoint: url)
+    }
+}
+
+@MainActor
+public protocol _PushManager {
+    var enabled: Bool { get }
+    
+    var subscriptions: [PushSubscription] { get }
+    func createSubscription(account: UserAccountInfo) async throws -> PushSubscription
+    func removeSubscription(account: UserAccountInfo)
+    func updateSubscription(account: UserAccountInfo, alerts: PushSubscription.Alerts, policy: PushSubscription.Policy)
+    func pushSubscription(account: UserAccountInfo) -> PushSubscription?
+    
+    func updateIfNecessary(updateSubscription: @escaping (PushSubscription) async -> Bool) async
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data)
+    func didFailToRegisterForRemoteNotifications(error: any Error)
+}

Packages/PushNotifications/Sources/PushNotifications/PushManagerImpl.swift

@@ -0,0 +1,203 @@
+//
+//  PushManagerImpl.swift
+//  PushNotifications
+//
+//  Created by Shadowfacts on 4/7/24.
+//
+
+import UIKit
+import UserAccounts
+import CryptoKit
+
+class PushManagerImpl: _PushManager {
+    private let endpoint: URL
+    
+    var enabled: Bool {
+        true
+    }
+    
+    private var apnsEnvironment: String {
+        #if DEBUG
+        "development"
+        #else
+        "production"
+        #endif
+    }
+    
+    private var remoteNotificationsRegistrationContinuation: CheckedContinuation<Data, any Error>?
+    
+    private let defaults = UserDefaults(suiteName: "group.space.vaccor.Tusker")!
+    public private(set) var subscriptions: [PushSubscription] {
+        get {
+            if let array = defaults.array(forKey: "PushSubscriptions") as? [[String: Any]] {
+                return array.compactMap(PushSubscription.init(defaultsDict:))
+            } else {
+                return []
+            }
+        }
+        set {
+            defaults.setValue(newValue.map(\.defaultsDict), forKey: "PushSubscriptions")
+        }
+    }
+    
+    init(endpoint: URL) {
+        self.endpoint = endpoint
+    }
+    
+    func createSubscription(account: UserAccountInfo) async throws -> PushSubscription {
+        if let existing = pushSubscription(account: account) {
+            return existing
+        }
+        let key = P256.KeyAgreement.PrivateKey()
+        var authSecret = Data(count: 16)
+        let res = authSecret.withUnsafeMutableBytes { ptr in
+            SecRandomCopyBytes(kSecRandomDefault, 16, ptr.baseAddress!)
+        }
+        guard res == errSecSuccess else {
+            throw CreateSubscriptionError.generatingAuthSecret(res)
+        }
+        let token = try await getDeviceToken()
+        let subscription = PushSubscription(
+            accountID: account.id,
+            endpoint: endpointURL(deviceToken: token, accountID: account.id),
+            secretKey: key,
+            authSecret: authSecret,
+            alerts: [],
+            policy: .all
+        )
+        subscriptions.append(subscription)
+        return subscription
+    }
+    
+    private func endpointURL(deviceToken: Data, accountID: String) -> URL {
+        var endpoint = URLComponents(url: endpoint, resolvingAgainstBaseURL: false)!
+        let accountID = accountID.addingPercentEncoding(withAllowedCharacters: .alphanumerics)!
+        endpoint.path = "/push/v1/\(apnsEnvironment)/\(deviceToken.hexEncodedString())/\(accountID)"
+        return endpoint.url!
+    }
+    
+    func removeSubscription(account: UserAccountInfo) {
+        subscriptions.removeAll { $0.accountID == account.id }
+    }
+    
+    func updateSubscription(account: UserAccountInfo, alerts: PushSubscription.Alerts, policy: PushSubscription.Policy) {
+        guard let index = subscriptions.firstIndex(where: { $0.accountID == account.id }) else {
+            return
+        }
+        var copy = subscriptions[index]
+        copy.alerts = alerts
+        copy.policy = policy
+        subscriptions[index] = copy
+    }
+    
+    func pushSubscription(account: UserAccountInfo) -> PushSubscription? {
+        subscriptions.first { $0.accountID == account.id }
+    }
+    
+    func updateIfNecessary(updateSubscription: @escaping (PushSubscription) async -> Bool) async {
+        let subscriptions = self.subscriptions
+        guard !subscriptions.isEmpty else {
+            return
+        }
+        do {
+            let token = try await getDeviceToken()
+            self.subscriptions = await AsyncSequenceAdaptor(wrapping: subscriptions).map {
+                let newEndpoint = await self.endpointURL(deviceToken: token, accountID: $0.accountID)
+                guard newEndpoint != $0.endpoint else {
+                    PushManager.logger.debug("Skipping update of push subscription with endpoint \($0.endpoint, privacy: .public)")
+                    return $0
+                }
+                var copy = $0
+                copy.endpoint = newEndpoint
+                if await updateSubscription(copy) {
+                    return copy
+                } else {
+                    return $0
+                }
+            }.reduce(into: [], { partialResult, el in
+                partialResult.append(el)
+            })
+        } catch {
+            PushManager.logger.error("Failed to update push registration: \(String(describing: error), privacy: .public)")
+            PushManager.captureError?(error)
+        }
+    }
+    
+    private func getDeviceToken() async throws -> Data {
+        return try await withCheckedThrowingContinuation { continuation in
+            remoteNotificationsRegistrationContinuation = continuation
+            UIApplication.shared.registerForRemoteNotifications()
+        }
+    }
+    
+    func didRegisterForRemoteNotifications(deviceToken: Data) {
+        remoteNotificationsRegistrationContinuation?.resume(returning: deviceToken)
+        remoteNotificationsRegistrationContinuation = nil
+    }
+    
+    func didFailToRegisterForRemoteNotifications(error: any Error) {
+        remoteNotificationsRegistrationContinuation?.resume(throwing: PushRegistrationError.registeringForRemoteNotifications(error))
+        remoteNotificationsRegistrationContinuation = nil
+    }
+}
+
+enum PushRegistrationError: LocalizedError {
+    case alreadyRegistering
+    case registeringForRemoteNotifications(any Error)
+    
+    var errorDescription: String? {
+        switch self {
+        case .alreadyRegistering:
+            "Already registering"
+        case .registeringForRemoteNotifications(let error):
+            "Remote notifications: \(error.localizedDescription)"
+        }
+    }
+}
+
+enum CreateSubscriptionError: LocalizedError {
+    case generatingAuthSecret(OSStatus)
+    
+    var errorDescription: String? {
+        switch self {
+        case .generatingAuthSecret(let code):
+            "Generating auth secret: \(code)"
+        }
+    }
+}
+
+private extension Data {
+    func hexEncodedString() -> String {
+        String(unsafeUninitializedCapacity: count * 2) { buffer in
+            let chars = Array("0123456789ABCDEF".utf8)
+            for (i, x) in enumerated() {
+                let (upper, lower) = x.quotientAndRemainder(dividingBy: 16)
+                buffer[i * 2] = chars[Int(upper)]
+                buffer[i * 2 + 1] = chars[Int(lower)]
+            }
+            return count * 2
+        }
+    }
+}
+
+private struct AsyncSequenceAdaptor<S: Sequence>: AsyncSequence {
+    typealias Element = S.Element
+    
+    let base: S
+    
+    init(wrapping base: S) {
+        self.base = base
+    }
+    
+    func makeAsyncIterator() -> AsyncIterator {
+        AsyncIterator(base: base.makeIterator())
+    }
+    
+    struct AsyncIterator: AsyncIteratorProtocol {
+        var base: S.Iterator
+        
+        mutating func next() async -> Element? {
+            base.next()
+        }
+    }
+}

Packages/PushNotifications/Sources/PushNotifications/PushSubscription.swift

@@ -0,0 +1,81 @@
+//
+//  PushSubscription.swift
+//  PushNotifications
+//
+//  Created by Shadowfacts on 4/7/24.
+//
+
+import Foundation
+import CryptoKit
+
+public struct PushSubscription {
+    public let accountID: String
+    public internal(set) var endpoint: URL
+    public let secretKey: P256.KeyAgreement.PrivateKey
+    public let authSecret: Data
+    public var alerts: Alerts
+    public var policy: Policy
+    
+    var defaultsDict: [String: Any] {
+        [
+            "accountID": accountID,
+            "endpoint": endpoint.absoluteString,
+            "secretKey": secretKey.rawRepresentation,
+            "authSecret": authSecret,
+            "alerts": alerts.rawValue,
+            "policy": policy.rawValue
+        ]
+    }
+    
+    init?(defaultsDict: [String: Any]) {
+        guard let accountID = defaultsDict["accountID"] as? String,
+              let endpoint = (defaultsDict["endpoint"] as? String).flatMap(URL.init(string:)),
+              let secretKey = (defaultsDict["secretKey"] as? Data).flatMap({ try? P256.KeyAgreement.PrivateKey(rawRepresentation: $0) }),
+              let authSecret = defaultsDict["authSecret"] as? Data,
+              let alerts = defaultsDict["alerts"] as? Int,
+              let policy = (defaultsDict["policy"] as? String).flatMap(Policy.init(rawValue:)) else {
+            return nil
+        }
+        self.accountID = accountID
+        self.endpoint = endpoint
+        self.secretKey = secretKey
+        self.authSecret = authSecret
+        self.alerts = Alerts(rawValue: alerts)
+        self.policy = policy
+    }
+    
+    init(accountID: String, endpoint: URL, secretKey: P256.KeyAgreement.PrivateKey, authSecret: Data, alerts: Alerts, policy: Policy) {
+        self.accountID = accountID
+        self.endpoint = endpoint
+        self.secretKey = secretKey
+        self.authSecret = authSecret
+        self.alerts = alerts
+        self.policy = policy
+    }
+
+    public enum Policy: String, CaseIterable, Identifiable, Sendable {
+        case all, followed, followers
+        
+        public var id: some Hashable {
+            self
+        }
+    }
+    
+    public struct Alerts: OptionSet, Hashable, Sendable {
+        public static let mention = Alerts(rawValue: 1 << 0)
+        public static let status = Alerts(rawValue: 1 << 1)
+        public static let reblog = Alerts(rawValue: 1 << 2)
+        public static let follow = Alerts(rawValue: 1 << 3)
+        public static let followRequest = Alerts(rawValue: 1 << 4)
+        public static let favorite = Alerts(rawValue: 1 << 5)
+        public static let poll = Alerts(rawValue: 1 << 6)
+        public static let update = Alerts(rawValue: 1 << 7)
+        public static let emojiReaction = Alerts(rawValue: 1 << 8)
+
+        public let rawValue: Int
+        
+        public init(rawValue: Int) {
+            self.rawValue = rawValue
+        }
+    }
+}

Packages/PushNotifications/Tests/PushNotificationsTests/PushNotificationsTests.swift

@@ -0,0 +1,12 @@
+import XCTest
+@testable import PushNotifications
+
+final class PushNotificationsTests: XCTestCase {
+    func testExample() throws {
+        // XCTest Documentation
+        // https://developer.apple.com/documentation/xctest
+
+        // Defining Test Cases and Test Methods
+        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+    }
+}

Packages/TuskerComponents/Sources/TuskerComponents/AsyncPicker.swift

@@ -0,0 +1,93 @@
+//
+//  AsyncPicker.swift
+//  TuskerComponents
+//
+//  Created by Shadowfacts on 4/9/24.
+//
+
+import SwiftUI
+
+public struct AsyncPicker<V: Hashable, Content: View>: View {
+    let titleKey: LocalizedStringKey
+    #if !os(visionOS)
+    @available(iOS, obsoleted: 16.0, message: "Switch to LabeledContent")
+    let labelHidden: Bool
+    #endif
+    let alignment: Alignment
+    @Binding var value: V
+    let onChange: (V) async -> Bool
+    let content: Content
+    @State private var isLoading = false
+    
+    public init(_ titleKey: LocalizedStringKey, labelHidden: Bool = false, alignment: Alignment = .center, value: Binding<V>, onChange: @escaping (V) async -> Bool, @ViewBuilder content: () -> Content) {
+        self.titleKey = titleKey
+        #if !os(visionOS)
+        self.labelHidden = labelHidden
+        #endif
+        self.alignment = alignment
+        self._value = value
+        self.onChange = onChange
+        self.content = content()
+    }
+    
+    public var body: some View {
+        #if os(visionOS)
+        LabeledContent(titleKey) {
+            picker
+        }
+        #else
+        if #available(iOS 16.0, *) {
+            LabeledContent(titleKey) {
+                picker
+            }
+        } else if labelHidden {
+            picker
+        } else {
+            HStack {
+                Text(titleKey)
+                Spacer()
+                picker
+            }
+        }
+        #endif
+    }
+    
+    private var picker: some View {
+        ZStack(alignment: alignment) {
+            Picker(titleKey, selection: Binding(get: {
+                value
+            }, set: { newValue in
+                let oldValue = value
+                value = newValue
+                isLoading = true
+                Task {
+                    let operationCompleted = await onChange(newValue)
+                    if !operationCompleted {
+                        value = oldValue
+                    }
+                    isLoading = false
+                }
+            })) {
+                content
+            }
+            .labelsHidden()
+            .opacity(isLoading ? 0 : 1)
+
+            if isLoading {
+                ProgressView()
+            }
+        }
+    }
+}
+
+#Preview {
+    @State var value = 0
+    return AsyncPicker("", value: $value) { _ in
+        try! await Task.sleep(nanoseconds: NSEC_PER_SEC)
+        return true
+    } content: {
+        ForEach(0..<10) {
+            Text("\($0)").tag($0)
+        }
+    }
+}

Packages/TuskerComponents/Sources/TuskerComponents/AsyncToggle.swift

@@ -0,0 +1,89 @@
+//
+//  AsyncToggle.swift
+//  TuskerComponents
+//
+//  Created by Shadowfacts on 4/7/24.
+//  Copyright © 2024 Shadowfacts. All rights reserved.
+//
+
+import SwiftUI
+
+public struct AsyncToggle: View {
+    let titleKey: LocalizedStringKey
+    #if !os(visionOS)
+    @available(iOS, obsoleted: 16.0, message: "Switch to LabeledContent")
+    let labelHidden: Bool
+    #endif
+    @Binding var mode: Mode
+    let onChange: (Bool) async -> Bool
+    
+    public init(_ titleKey: LocalizedStringKey, labelHidden: Bool = false, mode: Binding<Mode>, onChange: @escaping (Bool) async -> Bool) {
+        self.titleKey = titleKey
+        #if !os(visionOS)
+        self.labelHidden = labelHidden
+        #endif
+        self._mode = mode
+        self.onChange = onChange
+    }
+    
+    public var body: some View {
+        #if os(visionOS)
+        LabeledContent(titleKey) {
+            toggleOrSpinner
+        }
+        #else
+        if #available(iOS 16.0, *) {
+            LabeledContent(titleKey) {
+                toggleOrSpinner
+            }
+        } else if labelHidden {
+            toggleOrSpinner
+        } else {
+            HStack {
+                Text(titleKey)
+                Spacer()
+                toggleOrSpinner
+            }
+        }
+        #endif
+    }
+    
+    @ViewBuilder
+    private var toggleOrSpinner: some View {
+        ZStack {
+            Toggle(titleKey, isOn: Binding {
+                mode == .on
+            } set: { newValue in
+                mode = .loading
+                Task {
+                    let operationCompleted = await onChange(newValue)
+                    if operationCompleted {
+                        mode = newValue ? .on : .off
+                    } else {
+                        mode = newValue ? .off : .on
+                    }
+                }
+            })
+            .labelsHidden()
+            .opacity(mode == .loading ? 0 : 1)
+            
+            if mode == .loading {
+                ProgressView()
+            }
+        }
+    }
+    
+    public enum Mode {
+        case off
+        case loading
+        case on
+    }
+}
+
+#Preview {
+    @State var mode = AsyncToggle.Mode.on
+    return AsyncToggle("", mode: $mode) { _ in
+        try! await Task.sleep(nanoseconds: NSEC_PER_SEC)
+        return true
+    }
+}

Packages/TuskerComponents/Sources/TuskerComponents/FuzzyMatcher.swift

@@ -1,6 +1,6 @@
 //
 //  FuzzyMatcher.swift
-//  ComposeUI
+//  TuskerComponents
 //
 //  Created by Shadowfacts on 10/10/20.
 //  Copyright © 2020 Shadowfacts. All rights reserved.
@@ -8,7 +8,7 @@
 
 import Foundation
 
-struct FuzzyMatcher {
+public struct FuzzyMatcher {
     
     private init() {}
     
@@ -21,7 +21,7 @@ struct FuzzyMatcher {
     /// +2 points for every char in `pattern` that occurs in `str` sequentially
     /// -2 points for every char in `pattern` that does not occur in `str` sequentially
     /// -1 point for every char in `str` skipped between matching chars from the `pattern`
-    static func match(pattern: String, str: String) -> (matched: Bool, score: Int) {
+    public static func match(pattern: String, str: String) -> (matched: Bool, score: Int) {
         let pattern = pattern.lowercased()
         let str = str.lowercased()
         

Packages/TuskerComponents/Sources/TuskerComponents/MenuPicker.swift

@@ -26,13 +26,26 @@ public struct MenuPicker<Value: Hashable>: UIViewRepresentable {
     }
     
     public func makeUIView(context: Context) -> UIButton {
-        let button = UIButton()
+        let button = UIButton(configuration: makeConfiguration())
         button.showsMenuAsPrimaryAction = true
         button.setContentHuggingPriority(.required, for: .horizontal)
         return button
     }
     
     public func updateUIView(_ button: UIButton, context: Context) {
+        button.configuration = makeConfiguration()
+        button.menu = UIMenu(children: options.map { opt in
+            let action = UIAction(title: opt.title, subtitle: opt.subtitle, image: opt.image, state: opt.value == selection ? .on : .off) { _ in
+                selection = opt.value
+            }
+            action.accessibilityLabel = opt.accessibilityLabel
+            return action
+        })
+        button.accessibilityLabel = selectedOption.accessibilityLabel ?? selectedOption.title
+        button.isPointerInteractionEnabled = buttonStyle == .iconOnly
+    }
+    
+    private func makeConfiguration() -> UIButton.Configuration {
         var config = UIButton.Configuration.borderless()
         if #available(iOS 16.0, *) {
             config.indicator = .popup
@@ -43,16 +56,10 @@ public struct MenuPicker<Value: Hashable>: UIViewRepresentable {
         if buttonStyle.hasLabel {
             config.title = selectedOption.title
         }
-        button.configuration = config
-        button.menu = UIMenu(children: options.map { opt in
-            let action = UIAction(title: opt.title, subtitle: opt.subtitle, image: opt.image, state: opt.value == selection ? .on : .off) { _ in
-                selection = opt.value
-            }
-            action.accessibilityLabel = opt.accessibilityLabel
-            return action
-        })
-        button.accessibilityLabel = selectedOption.accessibilityLabel ?? selectedOption.title
-        button.isPointerInteractionEnabled = buttonStyle == .iconOnly
+        #if targetEnvironment(macCatalyst)
+        config.macIdiomStyle = .bordered
+        #endif
+        return config
     }
     
     public struct Option {

Packages/TuskerPreferences/Package.resolved

@@ -0,0 +1,23 @@
+{
+  "pins" : [
+    {
+      "identity" : "swift-system",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-system.git",
+      "state" : {
+        "revision" : "025bcb1165deab2e20d4eaba79967ce73013f496",
+        "version" : "1.2.1"
+      }
+    },
+    {
+      "identity" : "swift-url",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/karwa/swift-url.git",
+      "state" : {
+        "branch" : "main",
+        "revision" : "01ad5a103d14839a68c55ee556513e5939008e9e"
+      }
+    }
+  ],
+  "version" : 2
+}

Packages/TuskerPreferences/Package.swift

@@ -24,5 +24,9 @@ let package = Package(
             name: "TuskerPreferences",
             dependencies: ["Pachyderm"]
         ),
+        .testTarget(
+            name: "TuskerPreferencesTests",
+            dependencies: ["TuskerPreferences"]
+        )
     ]
 )

Packages/TuskerPreferences/Sources/TuskerPreferences/Coding.swift

@@ -0,0 +1,282 @@
+//
+//  Coding.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+
+private protocol PreferenceProtocol {
+    associatedtype Key: PreferenceKey
+    var storedValue: Key.Value? { get }
+    init()
+}
+
+extension Preference: PreferenceProtocol {
+}
+
+struct PreferenceCoding<Wrapped: Codable>: Codable {
+    let wrapped: Wrapped
+    
+    init(wrapped: Wrapped) {
+        self.wrapped = wrapped
+    }
+    
+    init(from decoder: any Decoder) throws {
+        self.wrapped = try Wrapped(from: PreferenceDecoder(wrapped: decoder))
+    }
+    
+    func encode(to encoder: any Encoder) throws {
+        try wrapped.encode(to: PreferenceEncoder(wrapped: encoder))
+    }
+}
+
+private struct PreferenceDecoder: Decoder {
+    let wrapped: any Decoder
+    
+    var codingPath: [any CodingKey] {
+        wrapped.codingPath
+    }
+    
+    var userInfo: [CodingUserInfoKey : Any] {
+        wrapped.userInfo
+    }
+    
+    func container<Key>(keyedBy type: Key.Type) throws -> KeyedDecodingContainer<Key> where Key : CodingKey {
+        KeyedDecodingContainer(PreferenceDecodingContainer(wrapped: try wrapped.container(keyedBy: type)))
+    }
+    
+    func unkeyedContainer() throws -> any UnkeyedDecodingContainer {
+        throw Error.onlyKeyedContainerSupported
+    }
+    
+    func singleValueContainer() throws -> any SingleValueDecodingContainer {
+        throw Error.onlyKeyedContainerSupported
+    }
+    
+    enum Error: Swift.Error {
+        case onlyKeyedContainerSupported
+    }
+}
+
+private struct PreferenceDecodingContainer<Key: CodingKey>: KeyedDecodingContainerProtocol {
+    let wrapped: KeyedDecodingContainer<Key>
+    
+    var codingPath: [any CodingKey] {
+        wrapped.codingPath
+    }
+    
+    var allKeys: [Key] {
+        wrapped.allKeys
+    }
+    
+    func contains(_ key: Key) -> Bool {
+        wrapped.contains(key)
+    }
+    
+    func decodeNil(forKey key: Key) throws -> Bool {
+        try wrapped.decodeNil(forKey: key)
+    }
+    
+    func decode(_ type: Bool.Type, forKey key: Key) throws -> Bool {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: String.Type, forKey key: Key) throws -> String {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Double.Type, forKey key: Key) throws -> Double {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Float.Type, forKey key: Key) throws -> Float {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Int.Type, forKey key: Key) throws -> Int {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Int8.Type, forKey key: Key) throws -> Int8 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Int16.Type, forKey key: Key) throws -> Int16 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Int32.Type, forKey key: Key) throws -> Int32 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: Int64.Type, forKey key: Key) throws -> Int64 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: UInt.Type, forKey key: Key) throws -> UInt {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: UInt8.Type, forKey key: Key) throws -> UInt8 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: UInt16.Type, forKey key: Key) throws -> UInt16 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: UInt32.Type, forKey key: Key) throws -> UInt32 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode(_ type: UInt64.Type, forKey key: Key) throws -> UInt64 {
+        try wrapped.decode(type, forKey: key)
+    }
+    
+    func decode<T>(_ type: T.Type, forKey key: Key) throws -> T where T : Decodable {
+        if let type = type as? any PreferenceProtocol.Type,
+           !contains(key) {
+            func makePreference<P: PreferenceProtocol>(_: P.Type) -> T {
+                P() as! T
+            }
+            return _openExistential(type, do: makePreference)
+        }
+        return try wrapped.decode(type, forKey: key)
+    }
+    
+    func nestedContainer<NestedKey>(keyedBy type: NestedKey.Type, forKey key: Key) throws -> KeyedDecodingContainer<NestedKey> where NestedKey : CodingKey {
+        try wrapped.nestedContainer(keyedBy: type, forKey: key)
+    }
+    
+    func nestedUnkeyedContainer(forKey key: Key) throws -> any UnkeyedDecodingContainer {
+        try wrapped.nestedUnkeyedContainer(forKey: key)
+    }
+    
+    func superDecoder() throws -> any Decoder {
+        try wrapped.superDecoder()
+    }
+    
+    func superDecoder(forKey key: Key) throws -> any Decoder {
+        try wrapped.superDecoder(forKey: key)
+    }
+}
+
+private struct PreferenceEncoder: Encoder {
+    let wrapped: any Encoder
+    
+    var codingPath: [any CodingKey] {
+        wrapped.codingPath
+    }
+    
+    var userInfo: [CodingUserInfoKey : Any] {
+        wrapped.userInfo
+    }
+    
+    func container<Key>(keyedBy type: Key.Type) -> KeyedEncodingContainer<Key> where Key : CodingKey {
+        KeyedEncodingContainer(PreferenceEncodingContainer(wrapped: wrapped.container(keyedBy: type)))
+    }
+    
+    func unkeyedContainer() -> any UnkeyedEncodingContainer {
+        fatalError("Only keyed containers supported")
+    }
+    
+    func singleValueContainer() -> any SingleValueEncodingContainer {
+        fatalError("Only keyed containers supported")
+    }
+}
+
+private struct PreferenceEncodingContainer<Key: CodingKey>: KeyedEncodingContainerProtocol {
+    var wrapped: KeyedEncodingContainer<Key>
+    
+    var codingPath: [any CodingKey] {
+        wrapped.codingPath
+    }
+    
+    mutating func encodeNil(forKey key: Key) throws {
+        try wrapped.encodeNil(forKey: key)
+    }
+    
+    mutating func encode(_ value: Bool, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: String, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Double, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Float, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Int, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Int8, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Int16, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Int32, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: Int64, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: UInt, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: UInt8, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: UInt16, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: UInt32, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode(_ value: UInt64, forKey key: Key) throws {
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func encode<T>(_ value: T, forKey key: Key) throws where T : Encodable {
+        if let value = value as? any PreferenceProtocol,
+           value.storedValue == nil {
+            return
+        }
+        try wrapped.encode(value, forKey: key)
+    }
+    
+    mutating func nestedContainer<NestedKey>(keyedBy keyType: NestedKey.Type, forKey key: Key) -> KeyedEncodingContainer<NestedKey> where NestedKey : CodingKey {
+        wrapped.nestedContainer(keyedBy: keyType, forKey: key)
+    }
+    
+    mutating func nestedUnkeyedContainer(forKey key: Key) -> any UnkeyedEncodingContainer {
+        wrapped.nestedUnkeyedContainer(forKey: key)
+    }
+    
+    mutating func superEncoder() -> any Encoder {
+        wrapped.superEncoder()
+    }
+    
+    mutating func superEncoder(forKey key: Key) -> any Encoder {
+        wrapped.superEncoder(forKey: key)
+    }
+    
+    
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/AdvancedKeys.swift

@@ -0,0 +1,28 @@
+//
+//  AdvancedKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+import Pachyderm
+
+struct StatusContentTypeKey: MigratablePreferenceKey {
+    static var defaultValue: StatusContentType { .plain }
+}
+
+struct FeatureFlagsKey: MigratablePreferenceKey, CustomCodablePreferenceKey {
+    static var defaultValue: Set<FeatureFlag> { [] }
+    
+    static func encode(value: Set<FeatureFlag>, to encoder: any Encoder) throws {
+        var container = encoder.singleValueContainer()
+        try container.encode(value.map(\.rawValue))
+    }
+    
+    static func decode(from decoder: any Decoder) throws -> Set<FeatureFlag>? {
+        let container = try decoder.singleValueContainer()
+        let names = try container.decode([String].self)
+        return Set(names.compactMap(FeatureFlag.init(rawValue:)))
+    }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/AppearanceKeys.swift

@@ -0,0 +1,49 @@
+//
+//  AppearanceKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+import UIKit
+
+public struct ThemeKey: MigratablePreferenceKey {
+    public static var defaultValue: Theme { .unspecified }
+}
+
+public struct AccentColorKey: MigratablePreferenceKey {
+    public static var defaultValue: AccentColor { .default }
+}
+
+struct AvatarStyleKey: MigratablePreferenceKey {
+    static var defaultValue: AvatarStyle { .roundRect }
+}
+
+struct LeadingSwipeActionsKey: MigratablePreferenceKey {
+    static var defaultValue: [StatusSwipeAction] { [.favorite, .reblog] }
+}
+
+struct TrailingSwipeActionsKey: MigratablePreferenceKey {
+    static var defaultValue: [StatusSwipeAction] { [.reply, .share] }
+}
+
+public struct WidescreenNavigationModeKey: MigratablePreferenceKey {
+    public static var defaultValue: WidescreenNavigationMode { .multiColumn }
+    
+    public static func shouldMigrate(oldValue: WidescreenNavigationMode) -> Bool {
+        oldValue != .splitScreen
+    }
+}
+
+struct AttachmentBlurModeKey: MigratablePreferenceKey {
+    static var defaultValue: AttachmentBlurMode { .useStatusSetting }
+    
+    static func didSet(in store: PreferenceStore, newValue: AttachmentBlurMode) {
+        if newValue == .always {
+            store.blurMediaBehindContentWarning = true
+        } else if newValue == .never {
+            store.blurMediaBehindContentWarning = false
+        }
+    }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/BehaviorKeys.swift

@@ -0,0 +1,40 @@
+//
+//  BehaviorKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+
+struct OppositeCollapseKeywordsKey: MigratablePreferenceKey {
+    static var defaultValue: [String] { [] }
+}
+
+struct ConfirmReblogKey: MigratablePreferenceKey {
+    static var defaultValue: Bool {
+        #if os(visionOS)
+        true
+        #else
+        false
+        #endif
+    }
+}
+
+struct TimelineSyncModeKey: MigratablePreferenceKey {
+    static var defaultValue: TimelineSyncMode { .icloud }
+}
+
+struct InAppSafariKey: MigratablePreferenceKey {
+    static var defaultValue: Bool {
+        #if targetEnvironment(macCatalyst) || os(visionOS)
+        false
+        #else
+        if ProcessInfo.processInfo.isiOSAppOnMac {
+            false
+        } else {
+            true
+        }
+        #endif
+    }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/CommonKeys.swift

@@ -0,0 +1,16 @@
+//
+//  CommonKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+
+public struct TrueKey: MigratablePreferenceKey {
+    public static var defaultValue: Bool { true }
+}
+
+public struct FalseKey: MigratablePreferenceKey {
+    public static var defaultValue: Bool { false }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/ComposingKeys.swift

@@ -0,0 +1,20 @@
+//
+//  ComposingKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+
+struct PostVisibilityKey: MigratablePreferenceKey {
+    static var defaultValue: PostVisibility { .serverDefault }
+}
+
+struct ReplyVisibilityKey: MigratablePreferenceKey {
+    static var defaultValue: ReplyVisibility { .sameAsPost }
+}
+
+struct ContentWarningCopyModeKey: MigratablePreferenceKey {
+    static var defaultValue: ContentWarningCopyMode { .asIs }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Keys/DigitalWellnessKeys.swift

@@ -0,0 +1,12 @@
+//
+//  DigitalWellnessKeys.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+
+struct NotificationsModeKey: MigratablePreferenceKey {
+    static var defaultValue: NotificationsMode { .allNotifications }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Legacy/LegacyPreferences.swift

@@ -0,0 +1,205 @@
+//
+//  LegacyPreferences.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 8/28/18.
+//  Copyright © 2018 Shadowfacts. All rights reserved.
+//
+
+import UIKit
+import Pachyderm
+import Combine
+
+public final class LegacyPreferences: Decodable {
+
+    init() {}
+    
+    public required init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        
+        self.theme = try container.decode(UIUserInterfaceStyle.self, forKey: .theme)
+        self.pureBlackDarkMode = try container.decodeIfPresent(Bool.self, forKey: .pureBlackDarkMode) ?? true
+        self.accentColor = try container.decodeIfPresent(AccentColor.self, forKey: .accentColor) ?? .default
+        self.avatarStyle = try container.decode(AvatarStyle.self, forKey: .avatarStyle)
+        self.hideCustomEmojiInUsernames = try container.decode(Bool.self, forKey: .hideCustomEmojiInUsernames)
+        self.showIsStatusReplyIcon = try container.decode(Bool.self, forKey: .showIsStatusReplyIcon)
+        self.alwaysShowStatusVisibilityIcon = try container.decode(Bool.self, forKey: .alwaysShowStatusVisibilityIcon)
+        self.hideActionsInTimeline = try container.decodeIfPresent(Bool.self, forKey: .hideActionsInTimeline) ?? false
+        self.showLinkPreviews = try container.decodeIfPresent(Bool.self, forKey: .showLinkPreviews) ?? true
+        self.leadingStatusSwipeActions = try container.decodeIfPresent([StatusSwipeAction].self, forKey: .leadingStatusSwipeActions) ?? leadingStatusSwipeActions
+        self.trailingStatusSwipeActions = try container.decodeIfPresent([StatusSwipeAction].self, forKey: .trailingStatusSwipeActions) ?? trailingStatusSwipeActions
+        self.widescreenNavigationMode = try container.decodeIfPresent(WidescreenNavigationMode.self, forKey: .widescreenNavigationMode) ?? Self.defaultWidescreenNavigationMode
+        self.underlineTextLinks = try container.decodeIfPresent(Bool.self, forKey: .underlineTextLinks) ?? false
+        self.showAttachmentsInTimeline = try container.decodeIfPresent(Bool.self, forKey: .showAttachmentsInTimeline) ?? true
+        
+        if let existing = try? container.decode(Visibility.self, forKey: .defaultPostVisibility) {
+            self.defaultPostVisibility = .visibility(existing)
+        } else {
+            self.defaultPostVisibility = try container.decode(PostVisibility.self, forKey: .defaultPostVisibility)
+        }
+        self.defaultReplyVisibility = try container.decodeIfPresent(ReplyVisibility.self, forKey: .defaultReplyVisibility) ?? .sameAsPost
+        self.requireAttachmentDescriptions = try container.decode(Bool.self, forKey: .requireAttachmentDescriptions)
+        self.contentWarningCopyMode = try container.decode(ContentWarningCopyMode.self, forKey: .contentWarningCopyMode)
+        self.mentionReblogger = try container.decode(Bool.self, forKey: .mentionReblogger)
+        self.useTwitterKeyboard = try container.decodeIfPresent(Bool.self, forKey: .useTwitterKeyboard) ?? false
+        
+        if let blurAllMedia = try? container.decodeIfPresent(Bool.self, forKey: .blurAllMedia) {
+            self.attachmentBlurMode = blurAllMedia ? .always : .useStatusSetting
+        } else {
+            self.attachmentBlurMode = try container.decode(AttachmentBlurMode.self, forKey: .attachmentBlurMode)
+        }
+        self.blurMediaBehindContentWarning = try container.decodeIfPresent(Bool.self, forKey: .blurMediaBehindContentWarning) ?? true
+        self.automaticallyPlayGifs = try container.decode(Bool.self, forKey: .automaticallyPlayGifs)
+        self.showUncroppedMediaInline = try container.decodeIfPresent(Bool.self, forKey: .showUncroppedMediaInline) ?? true
+        self.showAttachmentBadges = try container.decodeIfPresent(Bool.self, forKey: .showAttachmentBadges) ?? true
+        self.attachmentAltBadgeInverted = try container.decodeIfPresent(Bool.self, forKey: .attachmentAltBadgeInverted) ?? false
+        
+        self.openLinksInApps = try container.decode(Bool.self, forKey: .openLinksInApps)
+        self.useInAppSafari = try container.decode(Bool.self, forKey: .useInAppSafari)
+        self.inAppSafariAutomaticReaderMode = try container.decode(Bool.self, forKey: .inAppSafariAutomaticReaderMode)
+        self.expandAllContentWarnings = try container.decodeIfPresent(Bool.self, forKey: .expandAllContentWarnings) ?? false
+        self.collapseLongPosts = try container.decodeIfPresent(Bool.self, forKey: .collapseLongPosts) ?? true
+        self.oppositeCollapseKeywords = try container.decodeIfPresent([String].self, forKey: .oppositeCollapseKeywords) ?? []
+        self.confirmBeforeReblog = try container.decodeIfPresent(Bool.self, forKey: .confirmBeforeReblog) ?? false
+        self.timelineStateRestoration = try container.decodeIfPresent(Bool.self, forKey: .timelineStateRestoration) ?? true
+        self.timelineSyncMode = try container.decodeIfPresent(TimelineSyncMode.self, forKey: .timelineSyncMode) ?? .icloud
+        self.hideReblogsInTimelines = try container.decodeIfPresent(Bool.self, forKey: .hideReblogsInTimelines) ?? false
+        self.hideRepliesInTimelines = try container.decodeIfPresent(Bool.self, forKey: .hideRepliesInTimelines) ?? false
+        
+        self.showFavoriteAndReblogCounts = try container.decode(Bool.self, forKey: .showFavoriteAndReblogCounts)
+        self.defaultNotificationsMode = try container.decode(NotificationsMode.self, forKey: .defaultNotificationsType)
+        self.grayscaleImages = try container.decodeIfPresent(Bool.self, forKey: .grayscaleImages) ?? false
+        self.disableInfiniteScrolling = try container.decodeIfPresent(Bool.self, forKey: .disableInfiniteScrolling) ?? false
+        self.hideTrends = try container.decodeIfPresent(Bool.self, forKey: .hideTrends) ?? false
+        
+        self.statusContentType = try container.decode(StatusContentType.self, forKey: .statusContentType)
+        self.reportErrorsAutomatically = try container.decodeIfPresent(Bool.self, forKey: .reportErrorsAutomatically) ?? true
+        let featureFlagNames = (try? container.decodeIfPresent([String].self, forKey: .enabledFeatureFlags)) ?? []
+        self.enabledFeatureFlags = Set(featureFlagNames.compactMap(FeatureFlag.init))
+        
+        self.hasShownLocalTimelineDescription = try container.decodeIfPresent(Bool.self, forKey: .hasShownLocalTimelineDescription) ?? false
+        self.hasShownFederatedTimelineDescription = try container.decodeIfPresent(Bool.self, forKey: .hasShownFederatedTimelineDescription) ?? false
+    }
+    
+    // MARK: Appearance
+    @Published public var theme = UIUserInterfaceStyle.unspecified
+    @Published public var pureBlackDarkMode = true
+    @Published public var accentColor = AccentColor.default
+    @Published public var avatarStyle = AvatarStyle.roundRect
+    @Published public var hideCustomEmojiInUsernames = false
+    @Published public var showIsStatusReplyIcon = false
+    @Published public var alwaysShowStatusVisibilityIcon = false
+    @Published public var hideActionsInTimeline = false
+    @Published public var showLinkPreviews = true
+    @Published public var leadingStatusSwipeActions: [StatusSwipeAction] = [.favorite, .reblog]
+    @Published public var trailingStatusSwipeActions: [StatusSwipeAction] = [.reply, .share]
+    private static var defaultWidescreenNavigationMode = WidescreenNavigationMode.splitScreen
+    @Published public var widescreenNavigationMode = LegacyPreferences.defaultWidescreenNavigationMode
+    @Published public var underlineTextLinks = false
+    @Published public var showAttachmentsInTimeline = true
+    
+    // MARK: Composing
+    @Published public var defaultPostVisibility = PostVisibility.serverDefault
+    @Published public var defaultReplyVisibility = ReplyVisibility.sameAsPost
+    @Published public var requireAttachmentDescriptions = false
+    @Published public var contentWarningCopyMode = ContentWarningCopyMode.asIs
+    @Published public var mentionReblogger = false
+    @Published public var useTwitterKeyboard = false
+    
+    // MARK: Media
+    @Published public var attachmentBlurMode = AttachmentBlurMode.useStatusSetting
+    @Published public var blurMediaBehindContentWarning = true
+    @Published public var automaticallyPlayGifs = true
+    @Published public var showUncroppedMediaInline = true
+    @Published public var showAttachmentBadges = true
+    @Published public var attachmentAltBadgeInverted = false
+    
+    // MARK: Behavior
+    @Published public var openLinksInApps = true
+    @Published public var useInAppSafari = true
+    @Published public var inAppSafariAutomaticReaderMode = false
+    @Published public var expandAllContentWarnings = false
+    @Published public var collapseLongPosts = true
+    @Published public var oppositeCollapseKeywords: [String] = []
+    @Published public var confirmBeforeReblog = false
+    @Published public var timelineStateRestoration = true
+    @Published public var timelineSyncMode = TimelineSyncMode.icloud
+    @Published public var hideReblogsInTimelines = false
+    @Published public var hideRepliesInTimelines = false
+    
+    // MARK: Digital Wellness
+    @Published public var showFavoriteAndReblogCounts = true
+    @Published public var defaultNotificationsMode = NotificationsMode.allNotifications
+    @Published public var grayscaleImages = false
+    @Published public var disableInfiniteScrolling = false
+    @Published public var hideTrends = false
+    
+    // MARK: Advanced
+    @Published public var statusContentType: StatusContentType = .plain
+    @Published public var reportErrorsAutomatically = true
+    @Published public var enabledFeatureFlags: Set<FeatureFlag> = []
+    
+    // MARK:
+    @Published public var hasShownLocalTimelineDescription = false
+    @Published public var hasShownFederatedTimelineDescription = false
+    
+    private enum CodingKeys: String, CodingKey {
+        case theme
+        case pureBlackDarkMode
+        case accentColor
+        case avatarStyle
+        case hideCustomEmojiInUsernames
+        case showIsStatusReplyIcon
+        case alwaysShowStatusVisibilityIcon
+        case hideActionsInTimeline
+        case showLinkPreviews
+        case leadingStatusSwipeActions
+        case trailingStatusSwipeActions
+        case widescreenNavigationMode
+        case underlineTextLinks
+        case showAttachmentsInTimeline
+        
+        case defaultPostVisibility
+        case defaultReplyVisibility
+        case requireAttachmentDescriptions
+        case contentWarningCopyMode
+        case mentionReblogger
+        case useTwitterKeyboard
+        
+        case blurAllMedia // only used for migration
+        case attachmentBlurMode
+        case blurMediaBehindContentWarning
+        case automaticallyPlayGifs
+        case showUncroppedMediaInline
+        case showAttachmentBadges
+        case attachmentAltBadgeInverted
+        
+        case openLinksInApps
+        case useInAppSafari
+        case inAppSafariAutomaticReaderMode
+        case expandAllContentWarnings
+        case collapseLongPosts
+        case oppositeCollapseKeywords
+        case confirmBeforeReblog
+        case timelineStateRestoration
+        case timelineSyncMode
+        case hideReblogsInTimelines
+        case hideRepliesInTimelines
+        
+        case showFavoriteAndReblogCounts
+        case defaultNotificationsType
+        case grayscaleImages
+        case disableInfiniteScrolling
+        case hideTrends = "hideDiscover"
+        
+        case statusContentType
+        case reportErrorsAutomatically
+        case enabledFeatureFlags
+        
+        case hasShownLocalTimelineDescription
+        case hasShownFederatedTimelineDescription
+    }
+    
+}
+
+extension UIUserInterfaceStyle: Codable {}

Packages/TuskerPreferences/Sources/TuskerPreferences/Legacy/PreferenceStore+Migrate.swift

@@ -0,0 +1,106 @@
+//
+//  PreferenceStore+Migrate.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+import UIKit
+
+extension PreferenceStore {
+    func migrate(from legacy: LegacyPreferences) {
+        var migrations: [any MigrationProtocol] = [
+            Migration(from: \.theme.theme, to: \.$theme),
+            Migration(from: \.pureBlackDarkMode, to: \.$pureBlackDarkMode),
+            Migration(from: \.accentColor, to: \.$accentColor),
+            Migration(from: \.avatarStyle, to: \.$avatarStyle),
+            Migration(from: \.hideCustomEmojiInUsernames, to: \.$hideCustomEmojiInUsernames),
+            Migration(from: \.showIsStatusReplyIcon, to: \.$showIsStatusReplyIcon),
+            Migration(from: \.alwaysShowStatusVisibilityIcon, to: \.$alwaysShowStatusVisibilityIcon),
+            Migration(from: \.hideActionsInTimeline, to: \.$hideActionsInTimeline),
+            Migration(from: \.showLinkPreviews, to: \.$showLinkPreviews),
+            Migration(from: \.leadingStatusSwipeActions, to: \.$leadingStatusSwipeActions),
+            Migration(from: \.trailingStatusSwipeActions, to: \.$trailingStatusSwipeActions),
+            Migration(from: \.widescreenNavigationMode, to: \.$widescreenNavigationMode),
+            Migration(from: \.underlineTextLinks, to: \.$underlineTextLinks),
+            Migration(from: \.showAttachmentsInTimeline, to: \.$showAttachmentsInTimeline),
+            
+            Migration(from: \.defaultPostVisibility, to: \.$defaultPostVisibility),
+            Migration(from: \.defaultReplyVisibility, to: \.$defaultReplyVisibility),
+            Migration(from: \.requireAttachmentDescriptions, to: \.$requireAttachmentDescriptions),
+            Migration(from: \.contentWarningCopyMode, to: \.$contentWarningCopyMode),
+            Migration(from: \.mentionReblogger, to: \.$mentionReblogger),
+            Migration(from: \.useTwitterKeyboard, to: \.$useTwitterKeyboard),
+            
+            Migration(from: \.attachmentBlurMode, to: \.$attachmentBlurMode),
+            Migration(from: \.blurMediaBehindContentWarning, to: \.$blurMediaBehindContentWarning),
+            Migration(from: \.automaticallyPlayGifs, to: \.$automaticallyPlayGifs),
+            Migration(from: \.showUncroppedMediaInline, to: \.$showUncroppedMediaInline),
+            Migration(from: \.showAttachmentBadges, to: \.$showAttachmentBadges),
+            Migration(from: \.attachmentAltBadgeInverted, to: \.$attachmentAltBadgeInverted),
+            
+            Migration(from: \.openLinksInApps, to: \.$openLinksInApps),
+            Migration(from: \.expandAllContentWarnings, to: \.$expandAllContentWarnings),
+            Migration(from: \.collapseLongPosts, to: \.$collapseLongPosts),
+            Migration(from: \.oppositeCollapseKeywords, to: \.$oppositeCollapseKeywords),
+            Migration(from: \.confirmBeforeReblog, to: \.$confirmBeforeReblog),
+            Migration(from: \.timelineStateRestoration, to: \.$timelineStateRestoration),
+            Migration(from: \.timelineSyncMode, to: \.$timelineSyncMode),
+            Migration(from: \.hideReblogsInTimelines, to: \.$hideReblogsInTimelines),
+            Migration(from: \.hideRepliesInTimelines, to: \.$hideRepliesInTimelines),
+            
+            Migration(from: \.showFavoriteAndReblogCounts, to: \.$showFavoriteAndReblogCounts),
+            Migration(from: \.defaultNotificationsMode, to: \.$defaultNotificationsMode),
+            Migration(from: \.grayscaleImages, to: \.$grayscaleImages),
+            Migration(from: \.disableInfiniteScrolling, to: \.$disableInfiniteScrolling),
+            Migration(from: \.hideTrends, to: \.$hideTrends),
+            
+            Migration(from: \.statusContentType, to: \.$statusContentType),
+            Migration(from: \.reportErrorsAutomatically, to: \.$reportErrorsAutomatically),
+            Migration(from: \.enabledFeatureFlags, to: \.$enabledFeatureFlags),
+            
+            Migration(from: \.hasShownLocalTimelineDescription, to: \.$hasShownLocalTimelineDescription),
+            Migration(from: \.hasShownFederatedTimelineDescription, to: \.$hasShownFederatedTimelineDescription),
+        ]
+        #if !targetEnvironment(macCatalyst) && !os(visionOS)
+        migrations.append(contentsOf: [
+            Migration(from: \.useInAppSafari, to: \.$useInAppSafari),
+            Migration(from: \.inAppSafariAutomaticReaderMode, to: \.$inAppSafariAutomaticReaderMode),
+        ] as [any MigrationProtocol])
+        #endif
+
+        for migration in migrations {
+            migration.migrate(from: legacy, to: self)
+        }
+    }
+}
+
+private protocol MigrationProtocol {
+    func migrate(from legacy: LegacyPreferences, to store: PreferenceStore)
+}
+
+private struct Migration<Key: MigratablePreferenceKey>: MigrationProtocol where Key.Value: Equatable {
+    let from: KeyPath<LegacyPreferences, Key.Value>
+    let to: KeyPath<PreferenceStore, PreferencePublisher<Key>>
+    
+    func migrate(from legacy: LegacyPreferences, to store: PreferenceStore) {
+        let value = legacy[keyPath: from]
+        if Key.shouldMigrate(oldValue: value) {
+            Preference.set(enclosingInstance: store, storage: to.appending(path: \.preference), newValue: value)
+        }
+    }
+}
+
+private extension UIUserInterfaceStyle {
+    var theme: Theme {
+        switch self {
+        case .light:
+            .light
+        case .dark:
+            .dark
+        default:
+            .unspecified
+        }
+    }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/Preference.swift

@@ -0,0 +1,101 @@
+//
+//  Preference.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/13/24.
+//
+
+import Foundation
+import Combine
+
+// TODO: once we target iOS 17, use Observable for this
+@propertyWrapper
+final class Preference<Key: PreferenceKey>: Codable {
+    @Published private(set) var storedValue: Key.Value?
+    
+    var wrappedValue: Key.Value {
+        get {
+            storedValue ?? Key.defaultValue
+        }
+        set {
+            fatalError("unreachable")
+        }
+    }
+    
+    init() {
+        self.storedValue = nil
+    }
+    
+    init(from decoder: any Decoder) throws {
+        if let keyType = Key.self as? any CustomCodablePreferenceKey.Type {
+            self.storedValue = try keyType.decode(from: decoder) as! Key.Value?
+        } else if let container = try? decoder.singleValueContainer() {
+            self.storedValue = try? container.decode(Key.Value.self)
+        }
+    }
+    
+    func encode(to encoder: any Encoder) throws {
+        if let storedValue {
+            if let keyType = Key.self as? any CustomCodablePreferenceKey.Type {
+                func encode<K: CustomCodablePreferenceKey>(_: K.Type) throws {
+                    try K.encode(value: storedValue as! K.Value, to: encoder)
+                }
+                return try _openExistential(keyType, do: encode)
+            } else {
+                var container = encoder.singleValueContainer()
+                try container.encode(storedValue)
+            }
+        }
+    }
+    
+    static subscript(
+        _enclosingInstance instance: PreferenceStore,
+        wrapped wrappedKeyPath: ReferenceWritableKeyPath<PreferenceStore, Key.Value>,
+        storage storageKeyPath: ReferenceWritableKeyPath<PreferenceStore, Preference>
+    ) -> Key.Value {
+        get {
+            get(enclosingInstance: instance, storage: storageKeyPath)
+        }
+        set {
+            set(enclosingInstance: instance, storage: storageKeyPath, newValue: newValue)
+            Key.didSet(in: instance, newValue: newValue)
+        }
+    }
+    
+    // for testing only
+    @inline(__always)
+    static func get<Enclosing>(
+        enclosingInstance: Enclosing,
+        storage: KeyPath<Enclosing, Preference>
+    ) -> Key.Value where Enclosing: ObservableObject, Enclosing.ObjectWillChangePublisher == ObservableObjectPublisher {
+        let pref = enclosingInstance[keyPath: storage]
+        return pref.storedValue ?? Key.defaultValue
+    }
+    
+    // for testing only
+    @inline(__always)
+    static func set<Enclosing>(
+        enclosingInstance: Enclosing,
+        storage: KeyPath<Enclosing, Preference>,
+        newValue: Key.Value
+    ) where Enclosing: ObservableObject, Enclosing.ObjectWillChangePublisher == ObservableObjectPublisher {
+        enclosingInstance.objectWillChange.send()
+        let pref = enclosingInstance[keyPath: storage]
+        pref.storedValue = newValue
+    }
+    
+    var projectedValue: PreferencePublisher<Key> {
+        .init(preference: self)
+    }
+}
+
+public struct PreferencePublisher<Key: PreferenceKey>: Publisher {
+    public typealias Output = Key.Value
+    public typealias Failure = Never
+    
+    let preference: Preference<Key>
+    
+    public func receive<S>(subscriber: S) where S : Subscriber, Never == S.Failure, Key.Value == S.Input {
+        preference.$storedValue.map { $0 ?? Key.defaultValue }.receive(subscriber: subscriber)
+    }
+}

Packages/TuskerPreferences/Sources/TuskerPreferences/PreferenceKey.swift

@@ -0,0 +1,35 @@
+//
+//  PreferenceKey.swift
+//  TuskerPreferences
+//
+//  Created by Shadowfacts on 4/12/24.
+//
+
+import Foundation
+
+public protocol PreferenceKey {
+    associatedtype Value: Codable
+    
+    static var defaultValue: Value { get }
+    
+    static func didSet(in store: PreferenceStore, newValue: Value)
+}
+
+extension PreferenceKey {
+    public static func didSet(in store: PreferenceStore, newValue: Value) {}
+}
+
+protocol MigratablePreferenceKey: PreferenceKey where Value: Equatable {
+    static func shouldMigrate(oldValue: Value) -> Bool
+}
+
+extension MigratablePreferenceKey {
+    static func shouldMigrate(oldValue: Value) -> Bool {
+        oldValue != defaultValue
+    }
+}
+
+protocol CustomCodablePreferenceKey: PreferenceKey {
+    static func encode(value: Value, to encoder: any Encoder) throws
+    static func decode(from decoder: any Decoder) throws -> Value?
+}