Cache own instance in CoreData

See #251

Packages/InstanceFeatures/Sources/InstanceFeatures/InstanceFeatures.swift

@@ -135,7 +135,7 @@ public class InstanceFeatures: ObservableObject {
     public init() {
     }
     
-    public func update(instance: Instance, nodeInfo: NodeInfo?) {
+    public func update(instance: InstanceInfo, nodeInfo: NodeInfo?) {
         let ver = instance.version.lowercased()
         // check glitch first b/c it still reports "mastodon" as the software in nodeinfo
         if ver.contains("glitch") {

Packages/InstanceFeatures/Sources/InstanceFeatures/InstanceInfo.swift

@@ -0,0 +1,34 @@
+//
+//  InstanceInfo.swift
+//  InstanceFeatures
+//
+//  Created by Shadowfacts on 5/28/23.
+//
+
+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 init(version: String, maxStatusCharacters: Int?, configuration: Instance.Configuration?, pollsConfiguration: Instance.PollsConfiguration?) {
+        self.version = version
+        self.maxStatusCharacters = maxStatusCharacters
+        self.configuration = configuration
+        self.pollsConfiguration = pollsConfiguration
+    }
+}
+
+extension InstanceInfo {
+    public init(instance: Instance) {
+        self.init(
+            version: instance.version,
+            maxStatusCharacters: instance.maxStatusCharacters,
+            configuration: instance.configuration,
+            pollsConfiguration: instance.pollsConfiguration
+        )
+    }
+}

Packages/Pachyderm/Sources/Pachyderm/Model/Instance.swift

@@ -107,7 +107,7 @@ extension Instance {
 }
 
 extension Instance {
-    public struct Configuration: Decodable, Sendable {
+    public struct Configuration: Codable, Sendable {
         public let statuses: StatusesConfiguration
         public let mediaAttachments: MediaAttachmentsConfiguration
         /// Use Instance.pollsConfiguration to support older instance that don't have this nested
@@ -122,7 +122,7 @@ extension Instance {
 }
 
 extension Instance {
-    public struct StatusesConfiguration: Decodable, Sendable {
+    public struct StatusesConfiguration: Codable, Sendable {
         public let maxCharacters: Int
         public let maxMediaAttachments: Int
         public let charactersReservedPerURL: Int
@@ -136,7 +136,7 @@ extension Instance {
 }
 
 extension Instance {
-    public struct MediaAttachmentsConfiguration: Decodable, Sendable {
+    public struct MediaAttachmentsConfiguration: Codable, Sendable {
         public let supportedMIMETypes: [String]
         public let imageSizeLimit: Int
         public let imageMatrixLimit: Int
@@ -156,7 +156,7 @@ extension Instance {
 }
 
 extension Instance {
-    public struct PollsConfiguration: Decodable, Sendable {
+    public struct PollsConfiguration: Codable, Sendable {
         public let maxOptions: Int
         public let maxCharactersPerOption: Int
         public let minExpiration: TimeInterval

ShareExtension/ShareMastodonContext.swift

@@ -40,7 +40,7 @@ class ShareMastodonContext: ComposeMastodonContext, ObservableObject {
                 }
             })
             guard let instance = await instance else { return }
-            self.instanceFeatures.update(instance: instance, nodeInfo: await nodeInfo)
+            self.instanceFeatures.update(instance: InstanceInfo(instance: instance), nodeInfo: await nodeInfo)
         }
         
         Task { @MainActor in

Tusker.xcodeproj/project.pbxproj

@@ -29,6 +29,7 @@
 		D601FA61297B539E00A8E8B5 /* ConversationMainStatusCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D601FA60297B539E00A8E8B5 /* ConversationMainStatusCollectionViewCell.swift */; };
 		D601FA83297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = D601FA81297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.swift */; };
 		D601FA84297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = D601FA82297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.xib */; };
+		D608470F2A245D1F00C17380 /* ActiveInstance.swift in Sources */ = {isa = PBXBuildFile; fileRef = D608470E2A245D1F00C17380 /* ActiveInstance.swift */; };
 		D6093F9B25BDD4B9004811E6 /* HashtagSearchResultsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6093F9A25BDD4B9004811E6 /* HashtagSearchResultsViewController.swift */; };
 		D6093FB725BE0CF3004811E6 /* TrendHistoryView.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6093FB625BE0CF3004811E6 /* TrendHistoryView.swift */; };
 		D60CFFDB24A290BA00D00083 /* SwiftSoup in Frameworks */ = {isa = PBXBuildFile; productRef = D60CFFDA24A290BA00D00083 /* SwiftSoup */; };
@@ -426,6 +427,7 @@
 		D601FA60297B539E00A8E8B5 /* ConversationMainStatusCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConversationMainStatusCollectionViewCell.swift; sourceTree = "<group>"; };
 		D601FA81297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SuggestedProfileCardCollectionViewCell.swift; sourceTree = "<group>"; };
 		D601FA82297EEC3F00A8E8B5 /* SuggestedProfileCardCollectionViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = SuggestedProfileCardCollectionViewCell.xib; sourceTree = "<group>"; };
+		D608470E2A245D1F00C17380 /* ActiveInstance.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ActiveInstance.swift; sourceTree = "<group>"; };
 		D6093F9A25BDD4B9004811E6 /* HashtagSearchResultsViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HashtagSearchResultsViewController.swift; sourceTree = "<group>"; };
 		D6093FB625BE0CF3004811E6 /* TrendHistoryView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrendHistoryView.swift; sourceTree = "<group>"; };
 		D60E2F232442372B005F8713 /* StatusMO.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusMO.swift; sourceTree = "<group>"; };
@@ -954,6 +956,7 @@
 				D6A3A3812956123A0036B6EF /* TimelinePosition.swift */,
 				D68A76E229524D2A001DA1B3 /* ListMO.swift */,
 				D68A76D929511CA6001DA1B3 /* AccountPreferences.swift */,
+				D608470E2A245D1F00C17380 /* ActiveInstance.swift */,
 				D60E2F2D244248BF005F8713 /* MastodonCachePersistentStore.swift */,
 				D6B936702829F72900237D0E /* NSManagedObjectContext+Helpers.swift */,
 			);
@@ -1959,6 +1962,7 @@
 				D6969E9E240C81B9002843CE /* NSTextAttachment+Emoji.swift in Sources */,
 				D6D79F532A0FFE3200AB2315 /* ToggleableButton.swift in Sources */,
 				D6BC9DB3232D4C07002CA326 /* WellnessPrefsView.swift in Sources */,
+				D608470F2A245D1F00C17380 /* ActiveInstance.swift in Sources */,
 				D6ADB6F028ED1F25009924AB /* CachedImageView.swift in Sources */,
 				D693DE5923FE24310061E07D /* InteractivePushTransition.swift in Sources */,
 				D69693FA25859A8000F4E116 /* ComposeSceneDelegate.swift in Sources */,

Tusker/API/MastodonController.swift

@@ -42,7 +42,7 @@ class MastodonController: ObservableObject {
     }
     
     private let transient: Bool
-    private(set) nonisolated lazy var persistentContainer = MastodonCachePersistentStore(for: accountInfo, transient: transient)
+    nonisolated let persistentContainer: MastodonCachePersistentStore// = MastodonCachePersistentStore(for: accountInfo, transient: transient)
 
     let instanceURL: URL
     var accountInfo: UserAccountInfo?
@@ -52,7 +52,8 @@ class MastodonController: ObservableObject {
     let instanceFeatures = InstanceFeatures()
     
     @Published private(set) var account: Account!
-    @Published private(set) var instance: Instance!
+    @Published private(set) var instance: Instance?
+    @Published private(set) var instanceInfo: InstanceInfo!
     @Published private(set) var nodeInfo: NodeInfo!
     @Published private(set) var lists: [List] = []
     @Published private(set) var customEmojis: [Emoji]?
@@ -73,26 +74,33 @@ class MastodonController: ObservableObject {
         self.accountInfo = accountInfo
         self.client = Client(baseURL: instanceURL, session: .appDefault)
         self.transient = accountInfo == nil
+        self.persistentContainer = MastodonCachePersistentStore(for: accountInfo, transient: transient)
         
         self.client.clientID = accountInfo?.clientID
         self.client.clientSecret = accountInfo?.clientSecret
         self.client.accessToken = accountInfo?.accessToken
         
-        $instance
+        if !transient {
+            fetchActiveInstance()
+        }
+        
+        $instanceInfo
+            .compactMap { $0 }
             .combineLatest($nodeInfo)
-            .compactMap { (instance, nodeInfo) in
-                if let instance {
-                    return (instance, nodeInfo)
-                } else {
-                    return nil
-                }
-            }
             .sink { [unowned self] (instance, nodeInfo) in
                 self.instanceFeatures.update(instance: instance, nodeInfo: nodeInfo)
                 setInstanceBreadcrumb(instance: instance, nodeInfo: nodeInfo)
             }
             .store(in: &cancellables)
         
+        $instance
+            .compactMap { $0 }
+            .sink { [unowned self] in
+                self.updateActiveInstance(from: $0)
+                self.instanceInfo = InstanceInfo(instance: $0)
+            }
+            .store(in: &cancellables)
+        
         instanceFeatures.featuresUpdated
             .filter { [unowned self] _ in self.instanceFeatures.canFollowHashtags && self.followedHashtags.isEmpty }
             .sink { [unowned self] _ in
@@ -337,6 +345,31 @@ class MastodonController: ObservableObject {
         }
     }
     
+    private func updateActiveInstance(from instance: Instance) {
+        persistentContainer.performBackgroundTask { context in
+            if let existing = try? context.fetch(ActiveInstance.fetchRequest()).first {
+                existing.update(from: instance)
+            } else {
+                let new = ActiveInstance(context: context)
+                new.update(from: instance)
+            }
+            if context.hasChanges {
+                try? context.save()
+            }
+        }
+    }
+    
+    private func fetchActiveInstance() {
+        persistentContainer.performBackgroundTask { context in
+            if let activeInstance = try? context.fetch(ActiveInstance.fetchRequest()).first {
+                let info = InstanceInfo(activeInstance: activeInstance)
+                DispatchQueue.main.async {
+                    self.instanceInfo = info
+                }
+            }
+        }
+    }
+    
     func getCustomEmojis(completion: @escaping ([Emoji]) -> Void) {
         if let emojis = self.customEmojis {
             completion(emojis)
@@ -527,7 +560,7 @@ class MastodonController: ObservableObject {
     
 }
 
-private func setInstanceBreadcrumb(instance: Instance, nodeInfo: NodeInfo?) {
+private func setInstanceBreadcrumb(instance: InstanceInfo, nodeInfo: NodeInfo?) {
     let crumb = Breadcrumb(level: .info, category: "MastodonController")
     crumb.data = [
         "instance": [

Tusker/CoreData/ActiveInstance.swift

@@ -0,0 +1,49 @@
+//
+//  ActiveInstance.swift
+//  Tusker
+//
+//  Created by Shadowfacts on 5/28/23.
+//  Copyright © 2023 Shadowfacts. All rights reserved.
+//
+
+import Foundation
+import CoreData
+import Pachyderm
+import InstanceFeatures
+
+@objc(ActiveInstance)
+public final class ActiveInstance: NSManagedObject {
+    
+    @nonobjc class public func fetchRequest() -> NSFetchRequest<ActiveInstance> {
+        return NSFetchRequest(entityName: "ActiveInstance")
+    }
+    
+    @NSManaged public var version: String
+    @NSManaged public var maxStatusCharacters: Int
+    @NSManaged private var configurationData: Data?
+    @NSManaged private var pollsConfigurationData: Data?
+    
+    @LazilyDecoding(from: \ActiveInstance.configurationData, fallback: nil)
+    public var configuration: Instance.Configuration?
+    
+    @LazilyDecoding(from: \ActiveInstance.pollsConfigurationData, fallback: nil)
+    public var pollsConfiguration: Instance.PollsConfiguration?
+    
+    func update(from instance: Instance) {
+        self.version = instance.version
+        self.maxStatusCharacters = instance.maxStatusCharacters ?? 500
+        self.configuration = instance.configuration
+        self.pollsConfiguration = instance.pollsConfiguration
+    }
+}
+
+extension InstanceInfo {
+    init(activeInstance: ActiveInstance) {
+        self.init(
+            version: activeInstance.version,
+            maxStatusCharacters: activeInstance.maxStatusCharacters,
+            configuration: activeInstance.configuration,
+            pollsConfiguration: activeInstance.pollsConfiguration
+        )
+    }
+}

Tusker/CoreData/Tusker.xcdatamodeld/Tusker.xcdatamodel/contents

@@ -33,6 +33,12 @@
         <attribute name="createdAt" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
         <attribute name="pinnedTimelinesData" optional="YES" attributeType="Binary"/>
     </entity>
+    <entity name="ActiveInstance" representedClassName="ActiveInstance" syncable="YES">
+        <attribute name="configurationData" optional="YES" attributeType="Binary"/>
+        <attribute name="maxStatusCharacters" optional="YES" attributeType="Integer 64" defaultValueString="0" usesScalarValueType="YES"/>
+        <attribute name="pollsConfigurationData" optional="YES" attributeType="Binary"/>
+        <attribute name="version" optional="YES" attributeType="String"/>
+    </entity>
     <entity name="Filter" representedClassName="FilterMO" syncable="YES">
         <attribute name="action" attributeType="String" defaultValueString="warn"/>
         <attribute name="context" attributeType="String"/>
@@ -138,7 +144,6 @@
         <memberEntity name="TimelinePosition"/>
     </configuration>
     <configuration name="Local">
-        <memberEntity name="Account"/>
         <memberEntity name="Filter"/>
         <memberEntity name="FilterKeyword"/>
         <memberEntity name="FollowedHashtag"/>
@@ -146,5 +151,7 @@
         <memberEntity name="Status"/>
         <memberEntity name="TimelineState"/>
         <memberEntity name="List"/>
+        <memberEntity name="Account"/>
+        <memberEntity name="ActiveInstance"/>
     </configuration>
 </model>

Tusker/Screens/Report/ReportSelectRulesView.swift

@@ -31,7 +31,7 @@ struct ReportSelectRulesView: View {
     }
     
     var body: some View {
-        List(mastodonController.instance.rules!) { rule in
+        List(mastodonController.instance!.rules!) { rule in
             Button {
                 if selectedRuleIDs.contains(rule.id) {
                     selectedRuleIDs.removeAll(where: { $0 == rule.id })