Merge branch 'develop' into feature/valere/timeline_active_call_rendering

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/EventContent.kt

@@ -127,3 +127,34 @@ data class CallNotifyContent(
 ) : EventContent
 
 data object UnknownContent : EventContent
+
+fun EventContent.isMediaContent(): Boolean {
+    return when (this) {
+        is MessageContent -> type is MessageTypeWithAttachment || type is GalleryMessageType
+        is StickerContent -> true
+        else -> false
+    }
+}
+
+fun EventContent.mediaSources(): List<MediaSource> {
+    return when (this) {
+        is MessageContent -> mediaSources()
+        is StickerContent -> listOfNotNull(source, info.thumbnailSource)
+        else -> emptyList()
+    }
+}
+
+fun MessageContent.mediaSources(): List<MediaSource> {
+    return when (val messageType = type) {
+        is MessageTypeWithAttachment -> when (messageType) {
+            is ImageMessageType -> listOfNotNull(messageType.source, messageType.info?.thumbnailSource)
+            is VideoMessageType -> listOfNotNull(messageType.source, messageType.info?.thumbnailSource)
+            is AudioMessageType -> listOf(messageType.source)
+            is VoiceMessageType -> listOf(messageType.source)
+            is FileMessageType -> listOfNotNull(messageType.source, messageType.info?.thumbnailSource)
+            else -> emptyList()
+        }
+        is GalleryMessageType -> messageType.items.flatMap { it.mediaSources() }
+        else -> emptyList()
+    }
+}

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/MessageType.kt

@@ -115,6 +115,14 @@ sealed interface GalleryItemType {
     data class Video(val content: VideoMessageType) : GalleryItemType
     data class File(val content: FileMessageType) : GalleryItemType
     data class Other(val itemType: String, val body: String) : GalleryItemType
+
+    fun mediaSources(): List<MediaSource> = when (this) {
+        is Image -> listOfNotNull(content.source, content.info?.thumbnailSource)
+        is Audio -> listOf(content.source)
+        is Video -> listOfNotNull(content.source, content.info?.thumbnailSource)
+        is File -> listOfNotNull(content.source, content.info?.thumbnailSource)
+        is Other -> emptyList()
+    }
 }
 
 data class OtherMessageType(