When scrolling to first unread message of many, remove 1 from counter

app/src/main/java/org/linphone/ui/main/chat/fragment/ConversationFragment.kt

@@ -971,6 +971,10 @@ open class ConversationFragment : SlidingPaneChildFragment() {
         viewModel.isUserScrollingUp.value = !bottomReached
         if (bottomReached) {
             viewModel.markAsRead()
+        } else {
+            val firstUnread = adapter.currentList[firstUnreadMessagePosition]
+            (firstUnread.model as MessageModel).isRead = true
+            viewModel.markFirstUnreadMessageAsRead()
         }
     }
 

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

@@ -178,9 +178,8 @@ class ConversationViewModel @UiThread constructor() : AbstractConversationViewMo
             Log.i("$TAG Received [${eventLogs.size}] new message(s)")
             computeComposingLabel()
 
-            addEvents(eventLogs)
-
             unreadMessagesCount.postValue(chatRoom.unreadMessagesCount)
+            addEvents(eventLogs)
         }
 
         @WorkerThread
@@ -410,6 +409,16 @@ class ConversationViewModel @UiThread constructor() : AbstractConversationViewMo
         }
     }
 
+    @UiThread
+    fun markFirstUnreadMessageAsRead() {
+        // As we can't mark a single message as read in our SDK, small workaround
+        // TODO FIXME: when SDK will support chatMessage.markAsRead(), use it
+        val unreadCount = unreadMessagesCount.value ?: 0
+        if (unreadCount > 1) {
+            unreadMessagesCount.value = unreadCount - 1
+        }
+    }
+
     @UiThread
     fun applyFilter() {
         coreContext.postOnCoreThread {