Support local only posts on Hometown

Closes #130

Pachyderm/Client.swift

@@ -335,7 +335,8 @@ public class Client {
                                     language: String? = nil,
                                     pollOptions: [String]? = nil,
                                     pollExpiresIn: Int? = nil,
-                                    pollMultiple: Bool? = nil) -> Request<Status> {
+                                    pollMultiple: Bool? = nil,
+                                    localOnly: Bool? = nil) -> Request<Status> {
         return Request<Status>(method: .post, path: "/api/v1/statuses", body: ParametersBody([
                 "status" => text,
                 "content_type" => contentType.mimeType,
@@ -346,6 +347,7 @@ public class Client {
                 "language" => language,
                 "poll[expires_in]" => pollExpiresIn,
                 "poll[multiple]" => pollMultiple,
+                "local_only" => localOnly,
             ] + "media_ids" => media?.map { $0.id } + "poll[options]" => pollOptions))
     }
     

Tusker/Models/Draft.swift

@@ -21,6 +21,7 @@ class Draft: Codable, ObservableObject {
     @Published var inReplyToID: String?
     @Published var visibility: Status.Visibility
     @Published var poll: Poll?
+    @Published var localOnly: Bool
     
     var initialText: String
     
@@ -49,6 +50,7 @@ class Draft: Codable, ObservableObject {
         self.inReplyToID = nil
         self.visibility = Preferences.shared.defaultPostVisibility
         self.poll = nil
+        self.localOnly = false
         
         self.initialText = ""
     }
@@ -67,6 +69,7 @@ class Draft: Codable, ObservableObject {
         self.inReplyToID = try container.decode(String?.self, forKey: .inReplyToID)
         self.visibility = try container.decode(Status.Visibility.self, forKey: .visibility)
         self.poll = try container.decode(Poll.self, forKey: .poll)
+        self.localOnly = try container.decodeIfPresent(Bool.self, forKey: .localOnly) ?? false
         
         self.initialText = try container.decode(String.self, forKey: .initialText)
     }
@@ -85,6 +88,7 @@ class Draft: Codable, ObservableObject {
         try container.encode(inReplyToID, forKey: .inReplyToID)
         try container.encode(visibility, forKey: .visibility)
         try container.encode(poll, forKey: .poll)
+        try container.encode(localOnly, forKey: .localOnly)
         
         try container.encode(initialText, forKey: .initialText)
     }
@@ -109,6 +113,7 @@ extension Draft {
         case inReplyToID
         case visibility
         case poll
+        case localOnly
         
         case initialText
     }

Tusker/Screens/Compose/ComposeHostingController.swift

@@ -32,6 +32,7 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
     private var mainToolbar: UIToolbar!
     private var inputAccessoryToolbar: UIToolbar!
     private var visibilityBarButtonItems = [UIBarButtonItem]()
+    private var localOnlyItems = [UIBarButtonItem]()
     
     override var inputAccessoryView: UIView? { inputAccessoryToolbar }
     
@@ -54,6 +55,7 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
         self.uiState.delegate = self
         
         // main toolbar is shown at the bottom of the screen, the input accessory is attached to the keyboard while editing
+        // (except for MainComposeTextView which has its own accessory to add formatting buttons)
         mainToolbar = createToolbar()
         inputAccessoryToolbar = createToolbar()
         
@@ -73,6 +75,11 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
             .sink(receiveValue: self.visibilityChanged)
             .store(in: &cancellables)
         
+        self.uiState.$draft
+            .flatMap(\.$localOnly)
+            .sink(receiveValue: self.localOnlyChanged)
+            .store(in: &cancellables)
+        
         self.uiState.$draft
             .flatMap(\.objectWillChange)
             .debounce(for: .milliseconds(250), scheduler: DispatchQueue.global(qos: .utility))
@@ -114,7 +121,7 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
         toolbar.translatesAutoresizingMaskIntoConstraints = false
         toolbar.isAccessibilityElement = true
         
-        let visibilityItem = UIBarButtonItem(image: UIImage(systemName: draft.visibility.imageName), style: .plain, target: nil, action: nil)
+        let visibilityItem = UIBarButtonItem(image: nil, style: .plain, target: nil, action: nil)
         visibilityBarButtonItems.append(visibilityItem)
         visibilityChanged(draft.visibility)
 
@@ -124,6 +131,14 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
             UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil),
             UIBarButtonItem(title: "Drafts", style: .plain, target: self, action: #selector(draftsButtonPresed))
         ]
+        
+        if mastodonController.instanceFeatures.localOnlyPosts {
+            let item = UIBarButtonItem(image: nil, style: .plain, target: nil, action: nil)
+            toolbar.items!.insert(item, at: 2)
+            localOnlyItems.append(item)
+            localOnlyChanged(draft.localOnly)
+        }
+        
         return toolbar
     }
     
@@ -185,11 +200,10 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
     private func visibilityChanged(_ newVisibility: Status.Visibility) {
         for item in visibilityBarButtonItems {
             item.image = UIImage(systemName: newVisibility.imageName)
-            item.image!.accessibilityLabel = String(format: NSLocalizedString("Visibility: %@", comment: "compose visiblity accessibility label"), draft.visibility.displayName)
             item.accessibilityLabel = String(format: NSLocalizedString("Visibility: %@", comment: "compose visiblity accessibility label"), draft.visibility.displayName)
             let elements = Status.Visibility.allCases.map { (visibility) -> UIMenuElement in
                 let state = visibility == newVisibility ? UIMenuElement.State.on : .off
-                return UIAction(title: visibility.displayName, image: UIImage(systemName: visibility.unfilledImageName), identifier: nil, discoverabilityTitle: nil, attributes: [], state: state) { (_) in
+                return UIAction(title: visibility.displayName, image: UIImage(systemName: visibility.unfilledImageName), identifier: nil, discoverabilityTitle: nil, attributes: [], state: state) { [unowned self] (_) in
                     self.draft.visibility = visibility
                 }
             }
@@ -197,6 +211,27 @@ class ComposeHostingController: UIHostingController<ComposeContainerView> {
         }
     }
     
+    private func localOnlyChanged(_ localOnly: Bool) {
+        for item in localOnlyItems {
+            if localOnly {
+                item.image = UIImage(named: "link.broken")
+                item.accessibilityLabel = "Local-only"
+            } else {
+                item.image = UIImage(systemName: "link")
+                item.accessibilityLabel = "Federated"
+            }
+            item.menu = UIMenu(children: [
+                // todo: iOS 15, action subtitles
+                UIAction(title: "Local-only", image: UIImage(named: "link.broken"), state: localOnly ? .on : .off) { [unowned self] (_) in
+                    self.draft.localOnly = true
+                },
+                UIAction(title: "Federated", image: UIImage(systemName: "link"), state: localOnly ? .off : .on) { [unowned self] (_) in
+                    self.draft.localOnly = false
+                },
+            ])
+        }
+    }
+    
     override func canPaste(_ itemProviders: [NSItemProvider]) -> Bool {
         guard itemProviders.allSatisfy({ $0.canLoadObject(ofClass: CompositionAttachment.self) }) else { return false }
         switch mastodonController.instance.instanceType {

Tusker/Screens/Compose/ComposeView.swift

@@ -219,7 +219,8 @@ struct ComposeView: View {
                                                   language: nil,
                                                   pollOptions: draft.poll?.options.map(\.text),
                                                   pollExpiresIn: draft.poll == nil ? nil : Int(draft.poll!.duration),
-                                                  pollMultiple: draft.poll?.multiple)
+                                                  pollMultiple: draft.poll?.multiple,
+                                                  localOnly: mastodonController.instanceFeatures.localOnlyPosts ? draft.localOnly : nil)
                 self.mastodonController.run(request) { (response) in
                     switch response {
                     case let .failure(error):

Tusker/Screens/Compose/MainComposeTextView.swift

@@ -56,7 +56,10 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
     var textDidChange: (UITextView) -> Void
     
     @EnvironmentObject var uiState: ComposeUIState
+    @EnvironmentObject var mastodonController: MastodonController
+    // todo: should these be part of the coordinator?
     @State var visibilityButton: UIBarButtonItem?
+    @State var localOnlyButton: UIBarButtonItem?
     
     func makeUIView(context: Context) -> UITextView {
         let textView = WrappedTextView()
@@ -87,6 +90,22 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
             self.visibilityButton = visibilityButton
         }
         
+        if mastodonController.instanceFeatures.localOnlyPosts {
+            let image: UIImage
+            if uiState.draft.localOnly {
+                image = UIImage(named: "link.broken")!
+            } else {
+                image = UIImage(systemName: "link")!
+            }
+            let item = UIBarButtonItem(image: image, style: .plain, target: nil, action: nil)
+            toolbar.items!.insert(item, at: 2)
+            updateLocalOnlyMenu(item)
+            
+            DispatchQueue.main.async {
+                self.localOnlyButton = item
+            }
+        }
+        
         NotificationCenter.default.addObserver(context.coordinator, selector: #selector(Coordinator.keyboardWillShow(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
         NotificationCenter.default.addObserver(context.coordinator, selector: #selector(Coordinator.keyboardWillHide(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
         NotificationCenter.default.addObserver(context.coordinator, selector: #selector(Coordinator.keyboardDidHide(_:)), name: UIResponder.keyboardDidHideNotification, object: nil)
@@ -134,6 +153,17 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
         visibilityButton.menu = UIMenu(title: "", image: nil, identifier: nil, options: [], children: elements)
     }
     
+    private func updateLocalOnlyMenu(_ localOnlyButton: UIBarButtonItem) {
+        localOnlyButton.menu = UIMenu(children: [
+            UIAction(title: "Local-only", image: UIImage(named: "link.broken"), state: uiState.draft.localOnly ? .on : .off) { (_) in
+                self.uiState.draft.localOnly = true
+            },
+            UIAction(title: "Federated", image: UIImage(systemName: "link"), state: uiState.draft.localOnly ? .off : .on) { (_) in
+                self.uiState.draft.localOnly = false
+            },
+        ])
+    }
+    
     func updateUIView(_ uiView: UITextView, context: Context) {
         if context.coordinator.skipSettingTextOnNextUpdate {
             context.coordinator.skipSettingTextOnNextUpdate = false
@@ -145,6 +175,14 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
             visibilityButton.image = UIImage(systemName: visibility.imageName)
             updateVisibilityMenu(visibilityButton)
         }
+        if let localOnlyButton = localOnlyButton {
+            if uiState.draft.localOnly {
+                localOnlyButton.image = UIImage(named: "link.broken")
+            } else {
+                localOnlyButton.image = UIImage(systemName: "link")
+            }
+            updateLocalOnlyMenu(localOnlyButton)
+        }
         context.coordinator.text = $text
         context.coordinator.didChange = textDidChange
         context.coordinator.uiState = uiState