Allow editing of alt-text for media (#796)

* Allow editing of alt-text for media

* Fix

---------

Co-authored-by: Thomas Ricouard <ricouard77@gmail.com>

Packages/Env/Sources/Env/CurrentInstance.swift

@@ -17,6 +17,10 @@ public class CurrentInstance: ObservableObject {
   public var isEditSupported: Bool {
     instance?.version.hasPrefix("4") == true
   }
+    
+  public var isEditAltTextSupported: Bool {
+    instance?.version.hasPrefix("4.1") == true
+  }
 
   private init() {}
 

Packages/Network/Sources/Network/Endpoint/Statuses.swift

@@ -84,6 +84,7 @@ public struct StatusData: Encodable {
   public let mediaIds: [String]?
   public let poll: PollData?
   public let language: String?
+  public let mediaAttributes: [MediaAttribute]?
 
   public struct PollData: Encodable {
     public let options: [String]
@@ -96,6 +97,20 @@ public struct StatusData: Encodable {
       self.expires_in = expires_in
     }
   }
+    
+  public struct MediaAttribute: Encodable {
+    public let id: String
+    public let description: String?
+    public let thumbnail: String?
+    public let focus: String?
+    
+      public init(id: String, description: String?, thumbnail: String?, focus: String?) {
+      self.id = id
+      self.description = description
+      self.thumbnail = thumbnail
+      self.focus = focus
+    }
+  }
 
   public init(status: String,
               visibility: Visibility,
@@ -103,7 +118,8 @@ public struct StatusData: Encodable {
               spoilerText: String? = nil,
               mediaIds: [String]? = nil,
               poll: PollData? = nil,
-              language: String? = nil)
+              language: String? = nil,
+              mediaAttributes: [MediaAttribute]? = nil)
   {
     self.status = status
     self.visibility = visibility
@@ -112,5 +128,6 @@ public struct StatusData: Encodable {
     self.mediaIds = mediaIds
     self.poll = poll
     self.language = language
+    self.mediaAttributes = mediaAttributes
   }
 }

Packages/Status/Sources/Status/Editor/Components/StatusEditorMediaEditView.swift

@@ -1,4 +1,5 @@
 import DesignSystem
+import Env
 import Models
 import Shimmer
 import SwiftUI
@@ -6,6 +7,7 @@ import SwiftUI
 struct StatusEditorMediaEditView: View {
   @Environment(\.dismiss) private var dismiss
   @EnvironmentObject private var theme: Theme
+  @EnvironmentObject private var currentInstance: CurrentInstance
   @ObservedObject var viewModel: StatusEditorViewModel
   let container: StatusEditorMediaContainer
 
@@ -53,8 +55,14 @@ struct StatusEditorMediaEditView: View {
         ToolbarItem(placement: .navigationBarTrailing) {
           Button("action.done") {
             if !imageDescription.isEmpty {
-              Task {
-                await viewModel.addDescription(container: container, description: imageDescription)
+              if currentInstance.isEditAltTextSupported && viewModel.mode.isEditing {
+                Task {
+                  await viewModel.editDescription(container: container, description: imageDescription)
+                }
+              } else {
+                Task {
+                  await viewModel.addDescription(container: container, description: imageDescription)
+                }
               }
             }
             dismiss()

Packages/Status/Sources/Status/Editor/Components/StatusEditorMediaView.swift

@@ -7,6 +7,7 @@ import SwiftUI
 
 struct StatusEditorMediaView: View {
   @EnvironmentObject private var theme: Theme
+  @EnvironmentObject private var currentInstance: CurrentInstance
   @ObservedObject var viewModel: StatusEditorViewModel
   @State private var editingContainer: StatusEditorMediaContainer?
 
@@ -126,7 +127,7 @@ struct StatusEditorMediaView: View {
   @ViewBuilder
   private func makeImageMenu(container: StatusEditorMediaContainer) -> some View {
     if container.mediaAttachment != nil {
-      if !viewModel.mode.isEditing {
+      if currentInstance.isEditAltTextSupported || !viewModel.mode.isEditing {
         Button {
           editingContainer = container
         } label: {

Packages/Status/Sources/Status/Editor/StatusEditorViewModel.swift

@@ -175,7 +175,8 @@ public class StatusEditorViewModel: NSObject, ObservableObject {
                             spoilerText: spoilerOn ? spoilerText : nil,
                             mediaIds: mediasImages.compactMap { $0.mediaAttachment?.id },
                             poll: pollData,
-                            language: selectedLanguage)
+                            language: selectedLanguage,
+                            mediaAttributes: mediaAttributes)
       switch mode {
       case .new, .replyTo, .quote, .mention, .shareExtension:
         postStatus = try await client.post(endpoint: Statuses.postStatus(json: data))
@@ -658,7 +659,15 @@ public class StatusEditorViewModel: NSObject, ObservableObject {
                                     gifTransferable: nil,
                                     mediaAttachment: media,
                                     error: nil)
-      } catch {}
+      } catch { print(error) }
+    }
+  }
+
+  private var mediaAttributes: [StatusData.MediaAttribute] = []
+  func editDescription(container: StatusEditorMediaContainer, description: String) async {
+    guard let attachment = container.mediaAttachment else { return }
+    if indexOf(container: container) != nil {
+      mediaAttributes.append(StatusData.MediaAttribute(id: attachment.id, description: description, thumbnail: nil, focus: nil))
     }
   }