Add iOS media placeholders

apps/ios/TeleTuiIOS/Sources/TeleTuiIOSCore/UniFfiSessionBridge.swift

@@ -199,6 +199,41 @@ public actor UniFfiSessionBridge: SessionBridge {
         Reaction(emoji: reaction.emoji, count: reaction.count, isChosen: reaction.isChosen)
     }
 
+    private static func mapDownloadState(_ state: IosDownloadState) -> MediaDownloadState {
+        switch state {
+        case .notDownloaded:
+            .notDownloaded
+        case .downloading:
+            .downloading
+        case let .downloaded(path):
+            .downloaded(path: path)
+        case let .error(message):
+            .error(message)
+        }
+    }
+
+    private static func mapMedia(_ media: IosMedia) -> MessageMedia? {
+        switch media.kind {
+        case "photo":
+            .photo(PhotoMedia(
+                fileId: media.fileId,
+                width: media.width ?? 0,
+                height: media.height ?? 0,
+                downloadState: mapDownloadState(media.downloadState)
+            ))
+        case "voice":
+            .voice(VoiceMedia(
+                fileId: media.fileId,
+                duration: media.duration ?? 0,
+                mimeType: media.mimeType,
+                waveform: media.waveform,
+                downloadState: mapDownloadState(media.downloadState)
+            ))
+        default:
+            nil
+        }
+    }
+
     private static func mapMessage(_ message: IosMessage, chatId: Int64) -> Message {
         Message(
             id: message.id,
@@ -206,6 +241,8 @@ public actor UniFfiSessionBridge: SessionBridge {
             senderName: message.senderName,
             text: message.text,
             date: message.date,
+            mediaAlbumId: message.mediaAlbumId,
+            media: message.media.flatMap(mapMedia),
             isOutgoing: message.isOutgoing,
             isRead: message.isRead,
             editDate: message.editDate,