Add nodeinfo request and InstanceFeatures

Pachyderm/Client.swift

@@ -109,7 +109,9 @@ public class Client {
         var urlRequest = URLRequest(url: url, timeoutInterval: timeoutInterval)
         urlRequest.httpMethod = request.method.name
         urlRequest.httpBody = request.body.data
-        urlRequest.setValue(request.body.mimeType, forHTTPHeaderField: "Content-Type")
+        if let mimeType = request.body.mimeType {
+            urlRequest.setValue(mimeType, forHTTPHeaderField: "Content-Type")
+        }
         if let accessToken = accessToken {
             urlRequest.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
         }
@@ -150,6 +152,24 @@ public class Client {
         }
     }
     
+    public func nodeInfo(completion: @escaping Callback<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 components = URLComponents(string: url.href),
+                   components.host == self.baseURL.host {
+                    let nodeInfo = Request<NodeInfo>(method: .get, path: components.path)
+                    self.run(nodeInfo, completion: completion)
+                }
+            }
+        }
+    }
+    
     // MARK: - Self
     public static func getSelfAccount() -> Request<Account> {
         return Request<Account>(method: .get, path: "/api/v1/accounts/verify_credentials")

Pachyderm/Model/NodeInfo.swift

@@ -0,0 +1,19 @@
+//
+//  NodeInfo.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 1/22/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+
+public struct NodeInfo: Decodable {
+    public let version: String
+    public let software: Software
+    
+    public struct Software: Decodable {
+        public let name: String
+        public let version: String
+    }
+}

Pachyderm/Model/WellKnown.swift

@@ -0,0 +1,18 @@
+//
+//  WellKnown.swift
+//  Pachyderm
+//
+//  Created by Shadowfacts on 1/22/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+
+struct WellKnown: Decodable {
+    let links: [Link]
+    
+    struct Link: Decodable {
+        let href: String
+        let rel: String
+    }
+}

Tusker.xcodeproj/project.pbxproj

@@ -116,8 +116,11 @@
 		D62D2422217AA7E1005076CC /* UserActivityManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62D2421217AA7E1005076CC /* UserActivityManager.swift */; };
 		D62D2424217ABF3F005076CC /* NSUserActivity+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62D2423217ABF3F005076CC /* NSUserActivity+Extensions.swift */; };
 		D62D2426217ABF63005076CC /* UserActivityType.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62D2425217ABF63005076CC /* UserActivityType.swift */; };
+		D62E9981279C691F00C26176 /* NodeInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62E9980279C691F00C26176 /* NodeInfo.swift */; };
+		D62E9983279C69D400C26176 /* WellKnown.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62E9982279C69D400C26176 /* WellKnown.swift */; };
 		D62E9985279CA23900C26176 /* URLSession+Development.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62E9984279CA23900C26176 /* URLSession+Development.swift */; };
 		D62E9987279D094F00C26176 /* StatusMetaIndicatorsView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62E9986279D094F00C26176 /* StatusMetaIndicatorsView.swift */; };
+		D62E9989279DB2D100C26176 /* InstanceFeatures.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62E9988279DB2D100C26176 /* InstanceFeatures.swift */; };
 		D62FF04823D7CDD700909D6E /* AttributedStringHelperTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D62FF04723D7CDD700909D6E /* AttributedStringHelperTests.swift */; };
 		D6311C5025B3765B00B27539 /* ImageDataCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6311C4F25B3765B00B27539 /* ImageDataCache.swift */; };
 		D6333B372137838300CE884A /* AttributedString+Helpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6333B362137838300CE884A /* AttributedString+Helpers.swift */; };
@@ -523,8 +526,11 @@
 		D62D2421217AA7E1005076CC /* UserActivityManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserActivityManager.swift; sourceTree = "<group>"; };
 		D62D2423217ABF3F005076CC /* NSUserActivity+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "NSUserActivity+Extensions.swift"; sourceTree = "<group>"; };
 		D62D2425217ABF63005076CC /* UserActivityType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UserActivityType.swift; sourceTree = "<group>"; };
+		D62E9980279C691F00C26176 /* NodeInfo.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NodeInfo.swift; sourceTree = "<group>"; };
+		D62E9982279C69D400C26176 /* WellKnown.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WellKnown.swift; sourceTree = "<group>"; };
 		D62E9984279CA23900C26176 /* URLSession+Development.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "URLSession+Development.swift"; sourceTree = "<group>"; };
 		D62E9986279D094F00C26176 /* StatusMetaIndicatorsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusMetaIndicatorsView.swift; sourceTree = "<group>"; };
+		D62E9988279DB2D100C26176 /* InstanceFeatures.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InstanceFeatures.swift; sourceTree = "<group>"; };
 		D62FF04723D7CDD700909D6E /* AttributedStringHelperTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AttributedStringHelperTests.swift; sourceTree = "<group>"; };
 		D6311C4F25B3765B00B27539 /* ImageDataCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageDataCache.swift; sourceTree = "<group>"; };
 		D6333B362137838300CE884A /* AttributedString+Helpers.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "AttributedString+Helpers.swift"; sourceTree = "<group>"; };
@@ -905,6 +911,7 @@
 				D61099F02145686D00432DC2 /* List.swift */,
 				D6109A062145756700432DC2 /* LoginSettings.swift */,
 				D61099F22145688600432DC2 /* Mention.swift */,
+				D62E9980279C691F00C26176 /* NodeInfo.swift */,
 				D61099F4214568C300432DC2 /* Notification.swift */,
 				D623A53E2635F6910095BD04 /* Poll.swift */,
 				D61099F62145693500432DC2 /* PushSubscription.swift */,
@@ -916,6 +923,7 @@
 				D61099FE21456A4C00432DC2 /* Status.swift */,
 				D6285B4E21EA695800FE4B39 /* StatusContentType.swift */,
 				D6109A10214607D500432DC2 /* Timeline.swift */,
+				D62E9982279C69D400C26176 /* WellKnown.swift */,
 			);
 			path = Model;
 			sourceTree = "<group>";
@@ -1590,6 +1598,7 @@
 				D6945C2E23AC47C3005C403C /* SavedDataManager.swift */,
 				D6C693EE216192C2007D6A6D /* TuskerNavigationDelegate.swift */,
 				D6DFC69F242C4CCC00ACC392 /* WeakArray.swift */,
+				D62E9988279DB2D100C26176 /* InstanceFeatures.swift */,
 				D6D4DDD6212518A200E1C4BB /* Assets.xcassets */,
 				D6AEBB3F2321640F00E5038B /* Activities */,
 				D6F1F84E2193B9BE00F5FE67 /* Caching */,
@@ -1999,6 +2008,7 @@
 			files = (
 				D61099E5214561AB00432DC2 /* Application.swift in Sources */,
 				D667383C23299340000A2373 /* InstanceType.swift in Sources */,
+				D62E9983279C69D400C26176 /* WellKnown.swift in Sources */,
 				D61099FF21456A4C00432DC2 /* Status.swift in Sources */,
 				D61099E32144C38900432DC2 /* Emoji.swift in Sources */,
 				D6109A0D214599E100432DC2 /* RequestRange.swift in Sources */,
@@ -2026,6 +2036,7 @@
 				D6109A032145722C00432DC2 /* RegisteredApplication.swift in Sources */,
 				D6109A0921458C4A00432DC2 /* Empty.swift in Sources */,
 				D6285B4F21EA695800FE4B39 /* StatusContentType.swift in Sources */,
+				D62E9981279C691F00C26176 /* NodeInfo.swift in Sources */,
 				D6A3BC7923218E9200FD64D5 /* NotificationGroup.swift in Sources */,
 				D61099DF2144C11400432DC2 /* MastodonError.swift in Sources */,
 				D6A3BC7723218E1300FD64D5 /* TimelineSegment.swift in Sources */,
@@ -2080,6 +2091,7 @@
 				D6969E9E240C81B9002843CE /* NSTextAttachment+Emoji.swift in Sources */,
 				D6BC9DB3232D4C07002CA326 /* WellnessPrefsView.swift in Sources */,
 				D64BC18F23C18B9D000D0238 /* FollowRequestNotificationTableViewCell.swift in Sources */,
+				D62E9989279DB2D100C26176 /* InstanceFeatures.swift in Sources */,
 				D693DE5923FE24310061E07D /* InteractivePushTransition.swift in Sources */,
 				D69693FA25859A8000F4E116 /* ComposeSceneDelegate.swift in Sources */,
 				D6A3BC8A2321F79B00FD64D5 /* AccountTableViewCell.swift in Sources */,

Tusker/Controllers/MastodonController.swift

@@ -44,6 +44,8 @@ class MastodonController: ObservableObject {
     
     @Published private(set) var account: Account!
     @Published private(set) var instance: Instance!
+    @Published private(set) var nodeInfo: NodeInfo!
+    @Published private(set) var instanceFeatures = InstanceFeatures()
     private(set) var customEmojis: [Emoji]?
     
     private var pendingOwnInstanceRequestCallbacks = [(Instance) -> Void]()
@@ -161,6 +163,7 @@ class MastodonController: ObservableObject {
                         DispatchQueue.main.async {
                             self.ownInstanceRequest = nil
                             self.instance = instance
+                            self.instanceFeatures.update(instance: instance, nodeInfo: self.nodeInfo)
                             
                             for completion in self.pendingOwnInstanceRequestCallbacks {
                                 completion(instance)
@@ -169,6 +172,21 @@ class MastodonController: ObservableObject {
                         }
                     }
                 }
+                
+                client.nodeInfo { result in
+                    switch result {
+                    case let .failure(error):
+                        print("Unable to get node info: \(error)")
+                        
+                    case let .success(nodeInfo, _):
+                        DispatchQueue.main.async {
+                            self.nodeInfo = nodeInfo
+                            if let instance = self.instance {
+                                self.instanceFeatures.update(instance: instance, nodeInfo: nodeInfo)
+                            }
+                        }
+                    }
+                }
             }
         }
     }

Tusker/InstanceFeatures.swift

@@ -0,0 +1,20 @@
+//
+//  InstanceFeatures.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 1/23/22.
+//  Copyright © 2022 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+import Pachyderm
+
+struct InstanceFeatures {
+    private(set) var maxStatusChars = 500
+    private(set) var localOnlyPosts = false
+    
+    mutating func update(instance: Instance, nodeInfo: NodeInfo?) {
+        maxStatusChars = instance.maxStatusCharacters ?? 500
+        localOnlyPosts = nodeInfo?.software.name == "hometown"
+    }
+}

Tusker/Screens/Compose/ComposeView.swift

@@ -28,7 +28,7 @@ struct ComposeView: View {
     }
     
     var charactersRemaining: Int {
-        let limit = mastodonController.instance?.maxStatusCharacters ?? 500
+        let limit = mastodonController.instanceFeatures.maxStatusChars
         let cwCount = draft.contentWarningEnabled ? draft.contentWarning.count : 0
         return limit - (cwCount + CharacterCounter.count(text: draft.text, for: mastodonController.instance))
     }