Update isRead flag in message model when chat room is marked as read

app/src/main/java/org/linphone/ui/main/chat/model/MessageModel.kt

@@ -176,10 +176,9 @@ class MessageModel @WorkerThread constructor(
                     downloadingFileModel = null
                 }
                 computeContentsList()
-            } else if (messageState == ChatMessage.State.Displayed) {
-                Log.i("$TAG Message was marked as read")
-                isRead = true
             }
+
+            isRead = chatMessage.isRead
         }
 
         @WorkerThread

app/src/main/java/org/linphone/ui/main/chat/viewmodel/ConversationViewModel.kt

@@ -120,6 +120,18 @@ class ConversationViewModel @UiThread constructor() : ViewModel() {
         @WorkerThread
         override fun onChatRoomRead(chatRoom: ChatRoom) {
             unreadMessagesCount.postValue(0)
+
+            // Make sure message models are aware that they were read,
+            // required for scroll to bottom or first unread message behaves as expected
+            for (eventLog in events.value.orEmpty().reversed()) {
+                if (eventLog.model is MessageModel) {
+                    if (!eventLog.model.isRead) {
+                        eventLog.model.isRead = true
+                    } else {
+                        break
+                    }
+                }
+            }
             Log.i("$TAG Conversation was marked as read")
         }