Add voice message rendering to the timeline (#1776)

ElementX/Sources/Services/Timeline/TimelineController/MockRoomTimelineController.swift

@@ -82,6 +82,16 @@ class MockRoomTimelineController: RoomTimelineControllerProtocol {
         
     func retryDecryption(for sessionID: String) async { }
     
+    func playbackViewState(for itemID: TimelineItemIdentifier) -> VoiceRoomPlaybackViewState? {
+        VoiceRoomPlaybackViewState(duration: 10.0,
+                                   waveform: nil,
+                                   progress: 0.0)
+    }
+    
+    func playPauseAudio(for itemID: TimelineItemIdentifier) async { }
+    
+    func seekAudio(for itemID: TimelineItemIdentifier, progress: Double) async { }
+    
     // MARK: - UI Test signalling
     
     /// The cancellable used for UI Tests signalling.

ElementX/Sources/Services/Timeline/TimelineController/RoomTimelineController.swift

@@ -36,7 +36,8 @@ class RoomTimelineController: RoomTimelineControllerProtocol {
     let callbacks = PassthroughSubject<RoomTimelineControllerCallback, Never>()
     
     private(set) var timelineItems = [RoomTimelineItemProtocol]()
-    
+    private var timelineAudioPlaybackViewStates = [TimelineItemIdentifier: VoiceRoomPlaybackViewState]()
+
     var roomID: String {
         roomProxy.id
     }
@@ -220,6 +221,34 @@ class RoomTimelineController: RoomTimelineControllerProtocol {
     func retryDecryption(for sessionID: String) async {
         await roomProxy.retryDecryption(for: sessionID)
     }
+    
+    func playbackViewState(for itemID: TimelineItemIdentifier) -> VoiceRoomPlaybackViewState? {
+        guard let timelineItem = timelineItems.firstUsingStableID(itemID) else {
+            MXLog.error("timelineItem not found")
+            return .none
+        }
+        
+        switch timelineItem {
+        case let item as VoiceRoomTimelineItem:
+            if let playbackViewState = timelineAudioPlaybackViewStates[itemID] {
+                return playbackViewState
+            }
+            let playbackViewState = VoiceRoomPlaybackViewState(duration: item.content.duration,
+                                                               waveform: item.content.waveform)
+            timelineAudioPlaybackViewStates[itemID] = playbackViewState
+            return playbackViewState
+        default:
+            return .none
+        }
+    }
+    
+    func playPauseAudio(for itemID: TimelineItemIdentifier) async { }
+    
+    func seekAudio(for itemID: TimelineItemIdentifier, progress: Double) async {
+        Task {
+            timelineAudioPlaybackViewStates[itemID]?.updateState(progress: progress)
+        }
+    }
 
     // MARK: - Private
     

ElementX/Sources/Services/Timeline/TimelineController/RoomTimelineControllerProtocol.swift

@@ -64,6 +64,12 @@ protocol RoomTimelineControllerProtocol {
     func debugInfo(for itemID: TimelineItemIdentifier) -> TimelineItemDebugInfo
     
     func retryDecryption(for sessionID: String) async
+    
+    func playbackViewState(for itemID: TimelineItemIdentifier) -> VoiceRoomPlaybackViewState?
+    
+    func playPauseAudio(for itemID: TimelineItemIdentifier) async
+    
+    func seekAudio(for itemID: TimelineItemIdentifier, progress: Double) async
 }
 
 extension RoomTimelineControllerProtocol {