Update downstream message reactions

app/src/main/java/chat/rocket/android/chatroom/adapter/BaseViewHolder.kt

@@ -32,7 +32,7 @@ abstract class BaseViewHolder<T : BaseViewModel<*>>(
 
     private fun bindReactions() {
         data?.let {
-            if (it.isTailMessage) {
+            if (it.nextDownStreamMessage == null) {
                 val recyclerView = itemView.findViewById(R.id.recycler_view_reactions) as RecyclerView
                 val adapter = MessageReactionsAdapter()
                 val manager = GridLayoutManager(itemView.context, 6)

app/src/main/java/chat/rocket/android/chatroom/adapter/ChatRoomAdapter.kt

@@ -25,7 +25,7 @@ class ChatRoomAdapter(
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder<*> {
-        return when(viewType.toViewType()) {
+        return when (viewType.toViewType()) {
             BaseViewModel.ViewType.MESSAGE -> {
                 val view = parent.inflate(R.layout.item_message)
                 MessageViewHolder(view, actionsListener)
@@ -65,16 +65,15 @@ class ChatRoomAdapter(
             if (position + 1 < itemCount) {
                 val messageAbove = dataSet[position + 1]
                 if (messageAbove.messageId == dataSet[position].messageId) {
-                    dataSet[position].isTailMessage = true
+                    messageAbove.nextDownStreamMessage = dataSet[position]
                 }
             }
         } else {
             if (position == 0) {
-                dataSet[0].isTailMessage = true
-            }
-            else if (position - 1 > 0) {
+                dataSet[0].nextDownStreamMessage = null
+            } else if (position - 1 > 0) {
                 if (dataSet[position - 1].messageId != dataSet[position].messageId) {
-                    dataSet[position].isTailMessage = true
+                    dataSet[position].nextDownStreamMessage = null
                 }
             }
         }
@@ -109,11 +108,16 @@ class ChatRoomAdapter(
     }
 
     fun updateItem(message: BaseViewModel<*>) {
-        val index = dataSet.indexOfLast { it.messageId == message.messageId }
+        var index = dataSet.indexOfLast { it.messageId == message.messageId }
         Timber.d("index: $index")
         if (index > -1) {
+            message.nextDownStreamMessage = dataSet[index].nextDownStreamMessage
             dataSet[index] = message
             notifyItemChanged(index)
+            while (dataSet[index].nextDownStreamMessage != null) {
+                dataSet[index].nextDownStreamMessage!!.reactions = message.reactions
+                notifyItemChanged(--index)
+            }
         }
     }
 

app/src/main/java/chat/rocket/android/chatroom/viewmodel/AudioAttachmentViewModel.kt

@@ -11,9 +11,9 @@ data class AudioAttachmentViewModel(
         override val attachmentUrl: String,
         override val attachmentTitle: CharSequence,
         override val id: Long,
-        override val reactions: List<ReactionViewModel>,
-        override var isTailMessage: Boolean = false
-) : BaseFileAttachmentViewModel<AudioAttachment> {
+        override var reactions: List<ReactionViewModel>,
+        override var nextDownStreamMessage: BaseViewModel<*>? = null
+        ) : BaseFileAttachmentViewModel<AudioAttachment> {
     override val viewType: Int
         get() = BaseViewModel.ViewType.AUDIO_ATTACHMENT.viewType
     override val layoutId: Int

app/src/main/java/chat/rocket/android/chatroom/viewmodel/BaseViewModel.kt

@@ -9,8 +9,8 @@ interface BaseViewModel<out T> {
     val messageId: String
     val viewType: Int
     val layoutId: Int
-    val reactions: List<ReactionViewModel>
-    var isTailMessage: Boolean
+    var reactions: List<ReactionViewModel>
+    var nextDownStreamMessage: BaseViewModel<*>?
 
     enum class ViewType(val viewType: Int) {
         MESSAGE(0),

app/src/main/java/chat/rocket/android/chatroom/viewmodel/ImageAttachmentViewModel.kt

@@ -11,8 +11,8 @@ data class ImageAttachmentViewModel(
         override val attachmentUrl: String,
         override val attachmentTitle: CharSequence,
         override val id: Long,
-        override val reactions: List<ReactionViewModel>,
-        override var isTailMessage: Boolean = false
+        override var reactions: List<ReactionViewModel>,
+        override var nextDownStreamMessage: BaseViewModel<*>? = null
 ) : BaseFileAttachmentViewModel<ImageAttachment> {
     override val viewType: Int
         get() = BaseViewModel.ViewType.IMAGE_ATTACHMENT.viewType

app/src/main/java/chat/rocket/android/chatroom/viewmodel/MessageViewModel.kt

@@ -12,8 +12,8 @@ data class MessageViewModel(
         override val senderName: CharSequence,
         override val content: CharSequence,
         override val isPinned: Boolean,
-        override val reactions: List<ReactionViewModel>,
-        override var isTailMessage: Boolean = false
+        override var reactions: List<ReactionViewModel>,
+        override var nextDownStreamMessage: BaseViewModel<*>? = null
 ) : BaseMessageViewModel<Message> {
     override val viewType: Int
         get() = BaseViewModel.ViewType.MESSAGE.viewType

app/src/main/java/chat/rocket/android/chatroom/viewmodel/UrlPreviewViewModel.kt

@@ -12,8 +12,8 @@ data class UrlPreviewViewModel(
         val hostname: String,
         val description: CharSequence?,
         val thumbUrl: String?,
-        override val reactions: List<ReactionViewModel>,
-        override var isTailMessage: Boolean = false
+        override var reactions: List<ReactionViewModel>,
+        override var nextDownStreamMessage: BaseViewModel<*>? = null
 ) : BaseViewModel<Url> {
     override val viewType: Int
         get() = BaseViewModel.ViewType.URL_PREVIEW.viewType

app/src/main/java/chat/rocket/android/chatroom/viewmodel/VideoAttachmentViewModel.kt

@@ -11,8 +11,8 @@ data class VideoAttachmentViewModel(
         override val attachmentUrl: String,
         override val attachmentTitle: CharSequence,
         override val id: Long,
-        override val reactions: List<ReactionViewModel>,
-        override var isTailMessage: Boolean = false
+        override var reactions: List<ReactionViewModel>,
+        override var nextDownStreamMessage: BaseViewModel<*>? = null
 ) : BaseFileAttachmentViewModel<VideoAttachment> {
     override val viewType: Int
         get() = BaseViewModel.ViewType.VIDEO_ATTACHMENT.viewType