Fix impure reducer and use live event

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt

@@ -19,6 +19,7 @@ package im.vector.matrix.rx
 import im.vector.matrix.android.api.session.room.Room
 import im.vector.matrix.android.api.session.room.model.EventAnnotationsSummary
 import im.vector.matrix.android.api.session.room.model.RoomSummary
+import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import io.reactivex.Observable
 
 class RxRoom(private val room: Room) {
@@ -31,10 +32,14 @@ class RxRoom(private val room: Room) {
         return room.getRoomMemberIdsLive().asObservable()
     }
 
-    fun liveAnnotationSummary(eventId: String): Observable<List<EventAnnotationsSummary>> {
+    fun liveAnnotationSummary(eventId: String): Observable<EventAnnotationsSummary> {
         return room.getEventSummaryLive(eventId).asObservable()
     }
 
+    fun liveTimelineEvent(eventId: String): Observable<TimelineEvent> {
+        return room.liveTimeLineEvent(eventId).asObservable()
+    }
+
 }
 
 fun Room.rx(): RxRoom {

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt

@@ -80,5 +80,5 @@ interface RelationService {
      */
     fun replyToMessage(eventReplied: Event, replyText: String): Cancelable?
 
-    fun getEventSummaryLive(eventId: String): LiveData<List<EventAnnotationsSummary>>
+    fun getEventSummaryLive(eventId: String): LiveData<EventAnnotationsSummary>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/timeline/TimelineService.kt

@@ -16,6 +16,8 @@
 
 package im.vector.matrix.android.api.session.room.timeline
 
+import androidx.lifecycle.LiveData
+
 /**
  * This interface defines methods to interact with the timeline. It's implemented at the room level.
  */
@@ -32,4 +34,7 @@ interface TimelineService {
 
 
     fun getTimeLineEvent(eventId: String): TimelineEvent?
+
+
+    fun liveTimeLineEvent(eventId: String): LiveData<TimelineEvent>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt

@@ -17,6 +17,7 @@ package im.vector.matrix.android.internal.session.room.relation
 
 import android.content.Context
 import androidx.lifecycle.LiveData
+import androidx.lifecycle.Transformations
 import androidx.work.OneTimeWorkRequest
 import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.MatrixCallback
@@ -27,6 +28,7 @@ import im.vector.matrix.android.api.session.room.model.EventAnnotationsSummary
 import im.vector.matrix.android.api.session.room.model.message.MessageType
 import im.vector.matrix.android.api.session.room.model.relation.RelationService
 import im.vector.matrix.android.api.util.Cancelable
+import im.vector.matrix.android.internal.database.RealmLiveData
 import im.vector.matrix.android.internal.database.helper.addSendingEvent
 import im.vector.matrix.android.internal.database.mapper.asDomain
 import im.vector.matrix.android.internal.database.model.ChunkEntity
@@ -155,15 +157,13 @@ internal class DefaultRelationService @Inject constructor(private val context: C
         return workRequest
     }
 
-    override fun getEventSummaryLive(eventId: String): LiveData<List<EventAnnotationsSummary>> {
-        return monarchy.findAllMappedWithChanges(
-                { realm ->
-                    EventAnnotationsSummaryEntity.where(realm, eventId)
-                },
-                {
-                    it.asDomain()
-                }
-        )
+    override fun getEventSummaryLive(eventId: String): LiveData<EventAnnotationsSummary> {
+        val liveEntity = RealmLiveData(monarchy.realmConfiguration) { realm ->
+            EventAnnotationsSummaryEntity.where(realm, eventId)
+        }
+        return Transformations.map(liveEntity) { realmResults ->
+            realmResults.firstOrNull()?.asDomain() ?: EventAnnotationsSummary(eventId, emptyList(), null)
+        }
     }
 
     /**

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/DefaultTimelineService.kt

@@ -16,10 +16,14 @@
 
 package im.vector.matrix.android.internal.session.room.timeline
 
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MediatorLiveData
 import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.session.room.timeline.Timeline
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.TimelineService
+import im.vector.matrix.android.internal.database.RealmLiveData
+import im.vector.matrix.android.internal.database.model.EventAnnotationsSummaryEntity
 import im.vector.matrix.android.internal.database.model.EventEntity
 import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.task.TaskExecutor
@@ -47,5 +51,27 @@ internal class DefaultTimelineService @Inject constructor(private val roomId: St
                 })
     }
 
+    override fun liveTimeLineEvent(eventId: String): LiveData<TimelineEvent> {
+        val liveEventEntity = RealmLiveData(monarchy.realmConfiguration) { realm ->
+            EventEntity.where(realm, eventId = eventId)
+        }
+        val liveAnnotationsEntity = RealmLiveData(monarchy.realmConfiguration) { realm ->
+            EventAnnotationsSummaryEntity.where(realm, eventId = eventId)
+        }
+        val result = MediatorLiveData<TimelineEvent>()
+        result.addSource(liveEventEntity) { realmResults ->
+            result.value = realmResults.firstOrNull()?.let { timelineEventFactory.create(it) }
+        }
+
+        result.addSource(liveAnnotationsEntity) {
+            liveEventEntity.value?.let {
+                result.value = liveEventEntity.value?.let { realmResults ->
+                    //recreate the timeline event
+                    realmResults.firstOrNull()?.let { timelineEventFactory.create(it) }
+                }
+            }
+        }
+        return result
+    }
 
 }

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/MessageActionsViewModel.kt

@@ -15,10 +15,7 @@
  */
 package im.vector.riotredesign.features.home.room.detail.timeline.action
 
-import com.airbnb.mvrx.FragmentViewModelContext
-import com.airbnb.mvrx.MvRxState
-import com.airbnb.mvrx.MvRxViewModelFactory
-import com.airbnb.mvrx.ViewModelContext
+import com.airbnb.mvrx.*
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import im.vector.matrix.android.api.session.Session
@@ -28,7 +25,7 @@ import im.vector.matrix.android.api.session.room.model.message.MessageContent
 import im.vector.matrix.android.api.session.room.model.message.MessageTextContent
 import im.vector.matrix.android.api.session.room.model.message.MessageType
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
-import im.vector.riotredesign.core.di.HasScreenInjector
+import im.vector.matrix.rx.RxRoom
 import im.vector.riotredesign.core.platform.VectorViewModel
 import im.vector.riotredesign.features.home.room.detail.timeline.format.NoticeEventFormatter
 import im.vector.riotredesign.features.home.room.detail.timeline.item.MessageInformationData
@@ -37,27 +34,30 @@ import java.text.SimpleDateFormat
 import java.util.*
 
 
-val dateFormat = SimpleDateFormat("EEE, d MMM yyyy HH:mm", Locale.getDefault())
-
 data class MessageActionState(
         val roomId: String,
         val eventId: String,
         val informationData: MessageInformationData,
-        val timelineEvent: TimelineEvent?
+        val timelineEvent: Async<TimelineEvent> = Uninitialized
 ) : MvRxState {
 
+    constructor(args: TimelineEventFragmentArgs) : this(roomId = args.roomId, eventId = args.eventId, informationData = args.informationData)
+
+
+    private val dateFormat = SimpleDateFormat("EEE, d MMM yyyy HH:mm", Locale.getDefault())
+
     fun senderName(): String = informationData.memberName?.toString() ?: ""
 
-    fun time(): String? = timelineEvent?.root?.originServerTs?.let { dateFormat.format(Date(it)) }
+    fun time(): String? = timelineEvent()?.root?.originServerTs?.let { dateFormat.format(Date(it)) }
             ?: ""
 
-    fun canReact(): Boolean = timelineEvent?.root?.type == EventType.MESSAGE && timelineEvent.sendState.isSent()
+    fun canReact(): Boolean = timelineEvent()?.root?.type == EventType.MESSAGE && timelineEvent()?.sendState?.isSent() == true
 
     fun messageBody(eventHtmlRenderer: EventHtmlRenderer?, noticeEventFormatter: NoticeEventFormatter?): CharSequence? {
-        return when (timelineEvent?.root?.getClearType()) {
+        return when (timelineEvent()?.root?.getClearType()) {
             EventType.MESSAGE     -> {
-                val messageContent: MessageContent? = timelineEvent.annotations?.editSummary?.aggregatedContent?.toModel()
-                        ?: timelineEvent.root.getClearContent().toModel()
+                val messageContent: MessageContent? = timelineEvent()?.annotations?.editSummary?.aggregatedContent?.toModel()
+                        ?: timelineEvent()?.root?.getClearContent().toModel()
                 if (messageContent is MessageTextContent && messageContent.format == MessageType.FORMAT_MATRIX_HTML) {
                     eventHtmlRenderer?.render(messageContent.formattedBody
                             ?: messageContent.body)
@@ -72,7 +72,7 @@ data class MessageActionState(
             EventType.CALL_INVITE,
             EventType.CALL_HANGUP,
             EventType.CALL_ANSWER -> {
-                noticeEventFormatter?.format(timelineEvent)
+                timelineEvent()?.let { noticeEventFormatter?.format(it) }
             }
             else                  -> null
         }
@@ -85,10 +85,14 @@ data class MessageActionState(
 class MessageActionsViewModel @AssistedInject constructor(@Assisted
                                                           initialState: MessageActionState,
                                                           private val eventHtmlRenderer: EventHtmlRenderer,
-                                                          private val session: Session,
+                                                          session: Session,
                                                           private val noticeEventFormatter: NoticeEventFormatter
 ) : VectorViewModel<MessageActionState>(initialState) {
 
+
+    private val eventId = initialState.eventId
+    private val room = session.getRoom(initialState.roomId)
+
     @AssistedInject.Factory
     interface Factory {
         fun create(initialState: MessageActionState): MessageActionsViewModel
@@ -101,18 +105,19 @@ class MessageActionsViewModel @AssistedInject constructor(@Assisted
             return fragment.messageActionViewModelFactory.create(state)
         }
 
-        override fun initialState(viewModelContext: ViewModelContext): MessageActionState? {
-            val session = (viewModelContext.activity as HasScreenInjector).injector().session()
-            val args: TimelineEventFragmentArgs = viewModelContext.args()
-            val event = session.getRoom(args.roomId)?.getTimeLineEvent(args.eventId)
-            return MessageActionState(
-                    args.roomId,
-                    args.eventId,
-                    args.informationData,
-                    event
-            )
-        }
+    }
 
+    init {
+        observeEvent()
+    }
+
+    private fun observeEvent() {
+        if (room == null) return
+        RxRoom(room)
+                .liveTimelineEvent(eventId)
+                .execute {
+                    copy(timelineEvent = it)
+                }
     }
 
     fun resolveBody(state: MessageActionState): CharSequence? {

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/MessageMenuFragment.kt

@@ -55,7 +55,8 @@ class MessageMenuFragment : VectorBaseFragment() {
             val inflater = LayoutInflater.from(linearLayout.context)
             linearLayout.removeAllViews()
             var insertIndex = 0
-            state.actions.forEachIndexed { index, action ->
+            val actions = state.actions()
+            actions?.forEachIndexed { index, action ->
                 inflateActionView(action, inflater, linearLayout)?.let {
                     it.setOnClickListener {
                         interactionListener?.didSelectMenuAction(action)
@@ -63,7 +64,7 @@ class MessageMenuFragment : VectorBaseFragment() {
                     linearLayout.addView(it, insertIndex)
                     insertIndex++
                     if (addSeparators) {
-                        if (index < state.actions.size - 1) {
+                        if (index < actions.size - 1) {
                             linearLayout.addView(inflateSeparatorView(), insertIndex)
                             insertIndex++
                         }

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/MessageMenuViewModel.kt

@@ -15,10 +15,7 @@
  */
 package im.vector.riotredesign.features.home.room.detail.timeline.action
 
-import com.airbnb.mvrx.FragmentViewModelContext
-import com.airbnb.mvrx.MvRxState
-import com.airbnb.mvrx.MvRxViewModelFactory
-import com.airbnb.mvrx.ViewModelContext
+import com.airbnb.mvrx.*
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import im.vector.matrix.android.api.session.Session
@@ -30,6 +27,7 @@ import im.vector.matrix.android.api.session.room.model.message.MessageImageConte
 import im.vector.matrix.android.api.session.room.model.message.MessageType
 import im.vector.matrix.android.api.session.room.send.SendState
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
+import im.vector.matrix.rx.RxRoom
 import im.vector.riotredesign.R
 import im.vector.riotredesign.core.platform.VectorViewModel
 import im.vector.riotredesign.core.resources.StringProvider
@@ -44,7 +42,7 @@ data class MessageMenuState(
         val roomId: String,
         val eventId: String,
         val informationData: MessageInformationData,
-        val actions: List<SimpleAction> = emptyList()
+        val actions: Async<List<SimpleAction>> = Uninitialized
 ) : MvRxState {
 
     constructor(args: TimelineEventFragmentArgs) : this(roomId = args.roomId, eventId = args.eventId, informationData = args.informationData)
@@ -63,6 +61,12 @@ class MessageMenuViewModel @AssistedInject constructor(@Assisted initialState: M
         fun create(initialState: MessageMenuState): MessageMenuViewModel
     }
 
+    private val room = session.getRoom(initialState.roomId)
+            ?: throw IllegalStateException("Shouldn't use this ViewModel without a room")
+
+    private val eventId = initialState.eventId
+    private val informationData: MessageInformationData = initialState.informationData
+
     companion object : MvRxViewModelFactory<MessageMenuViewModel, MessageMenuState> {
 
         const val ACTION_ADD_REACTION = "add_reaction"
@@ -87,13 +91,23 @@ class MessageMenuViewModel @AssistedInject constructor(@Assisted initialState: M
     }
 
     init {
-        setState { reduceState(this) }
+        observeEvent()
     }
 
-    private fun reduceState(state: MessageMenuState): MessageMenuState {
-        val event = session.getRoom(state.roomId)?.getTimeLineEvent(state.eventId) ?: return state
+    private fun observeEvent() {
+        RxRoom(room)
+                .liveTimelineEvent(eventId)
+                ?.map {
+                    actionsForEvent(it)
+                }
+                ?.execute {
+                    copy(actions = it)
+                }
+    }
 
-        val messageContent: MessageContent? = event.annotations?.editSummary?.aggregatedContent?.toModel()
+    private fun actionsForEvent(event: TimelineEvent): List<SimpleAction> {
+
+        val messageContent: MessageContent? = event.annotations?.editSummary?.aggregatedContent.toModel()
                 ?: event.root.getClearContent().toModel()
         val type = messageContent?.type
 
@@ -114,7 +128,7 @@ class MessageMenuViewModel @AssistedInject constructor(@Assisted initialState: M
                 //TODO is downloading attachement?
 
                 if (canReact(event, messageContent)) {
-                    this.add(SimpleAction(ACTION_ADD_REACTION, R.string.message_add_reaction, R.drawable.ic_add_reaction, event.root.eventId))
+                    this.add(SimpleAction(ACTION_ADD_REACTION, R.string.message_add_reaction, R.drawable.ic_add_reaction, eventId))
                 }
                 if (canCopy(type)) {
                     //TODO copy images? html? see ClipBoard
@@ -122,23 +136,23 @@ class MessageMenuViewModel @AssistedInject constructor(@Assisted initialState: M
                 }
 
                 if (canReply(event, messageContent)) {
-                    this.add(SimpleAction(ACTION_REPLY, R.string.reply, R.drawable.ic_reply, event.root.eventId))
+                    this.add(SimpleAction(ACTION_REPLY, R.string.reply, R.drawable.ic_reply, eventId))
                 }
 
                 if (canEdit(event, session.sessionParams.credentials.userId)) {
-                    this.add(SimpleAction(ACTION_EDIT, R.string.edit, R.drawable.ic_edit, event.root.eventId))
+                    this.add(SimpleAction(ACTION_EDIT, R.string.edit, R.drawable.ic_edit, eventId))
                 }
 
                 if (canRedact(event, session.sessionParams.credentials.userId)) {
-                    this.add(SimpleAction(ACTION_DELETE, R.string.delete, R.drawable.ic_delete, event.root.eventId))
+                    this.add(SimpleAction(ACTION_DELETE, R.string.delete, R.drawable.ic_delete, eventId))
                 }
 
                 if (canQuote(event, messageContent)) {
-                    this.add(SimpleAction(ACTION_QUOTE, R.string.quote, R.drawable.ic_quote, state.eventId))
+                    this.add(SimpleAction(ACTION_QUOTE, R.string.quote, R.drawable.ic_quote, eventId))
                 }
 
                 if (canViewReactions(event)) {
-                    this.add(SimpleAction(ACTION_VIEW_REACTIONS, R.string.message_view_reaction, R.drawable.ic_view_reactions, state.informationData))
+                    this.add(SimpleAction(ACTION_VIEW_REACTIONS, R.string.message_view_reaction, R.drawable.ic_view_reactions, informationData))
                 }
 
                 if (canShare(type)) {
@@ -160,22 +174,22 @@ class MessageMenuViewModel @AssistedInject constructor(@Assisted initialState: M
                     //TODO sent by me or sufficient power level
                 }
 
-                this.add(SimpleAction(VIEW_SOURCE, R.string.view_source, R.drawable.ic_view_source, JSONObject(event.root.toContent()).toString(4)))
+                this.add(SimpleAction(VIEW_SOURCE, R.string.view_source, R.drawable.ic_view_source, JSONObject(event.root.content.toContent()).toString(4)))
                 if (event.isEncrypted()) {
-                    val decryptedContent = event.root.mClearEvent?.toContent()?.let {
+                    val decryptedContent = event.root.mClearEvent?.content?.toContent().let {
                         JSONObject(it).toString(4)
                     } ?: stringProvider.getString(R.string.encryption_information_decryption_error)
                     this.add(SimpleAction(VIEW_DECRYPTED_SOURCE, R.string.view_decrypted_source, R.drawable.ic_view_source, decryptedContent))
                 }
-                this.add(SimpleAction(ACTION_COPY_PERMALINK, R.string.permalink, R.drawable.ic_permalink, state.eventId))
+                this.add(SimpleAction(ACTION_COPY_PERMALINK, R.string.permalink, R.drawable.ic_permalink, event.root.eventId))
 
                 if (session.sessionParams.credentials.userId != event.root.senderId && event.root.getClearType() == EventType.MESSAGE) {
                     //not sent by me
-                    this.add(SimpleAction(ACTION_FLAG, R.string.report_content, R.drawable.ic_flag, state.eventId))
+                    this.add(SimpleAction(ACTION_FLAG, R.string.report_content, R.drawable.ic_flag, event.root.eventId))
                 }
             }
         }
-        return state.copy(actions = actions)
+        return actions
     }
 
 

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/QuickReactionFragment.kt

@@ -47,7 +47,7 @@ class QuickReactionFragment : VectorBaseFragment() {
         injector.inject(this)
     }
 
-    lateinit var textViews: List<TextView>
+    private lateinit var textViews: List<TextView>
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -63,7 +63,8 @@ class QuickReactionFragment : VectorBaseFragment() {
     }
 
     override fun invalidate() = withState(viewModel) {
-        it.quickStates.forEachIndexed { index, qs ->
+        val quickReactionsStates = it.quickStates() ?: return@withState
+        quickReactionsStates.forEachIndexed { index, qs ->
             textViews[index].text = qs.reaction
             textViews[index].alpha = if (qs.isSelected) 0.2f else 1f
         }

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/QuickReactionViewModel.kt

@@ -15,13 +15,11 @@
  */
 package im.vector.riotredesign.features.home.room.detail.timeline.action
 
-import com.airbnb.mvrx.FragmentViewModelContext
-import com.airbnb.mvrx.MvRxState
-import com.airbnb.mvrx.MvRxViewModelFactory
-import com.airbnb.mvrx.ViewModelContext
+import com.airbnb.mvrx.*
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.rx.RxRoom
 import im.vector.riotredesign.core.platform.VectorViewModel
 import im.vector.riotredesign.features.home.room.detail.timeline.item.MessageInformationData
 
@@ -37,7 +35,7 @@ data class QuickReactionState(
         val roomId: String,
         val eventId: String,
         val informationData: MessageInformationData,
-        val quickStates: List<ToggleState> = emptyList(),
+        val quickStates: Async<List<ToggleState>> = Uninitialized,
         val result: ToggleState? = null
         /** Pair of 'clickedOn' and current toggles state*/
 ) : MvRxState {
@@ -56,6 +54,9 @@ class QuickReactionViewModel @AssistedInject constructor(@Assisted initialState:
         fun create(initialState: QuickReactionState): QuickReactionViewModel
     }
 
+    private val room = session.getRoom(initialState.roomId)
+    private val eventId = initialState.eventId
+
     companion object : MvRxViewModelFactory<QuickReactionViewModel, QuickReactionState> {
 
         val quickEmojis = listOf("👍", "👎", "😄", "🎉", "😕", "❤️", "🚀", "👀")
@@ -67,22 +68,30 @@ class QuickReactionViewModel @AssistedInject constructor(@Assisted initialState:
     }
 
     init {
-        setState { reduceState(this) }
+        observeReactions()
     }
 
-    private fun reduceState(state: QuickReactionState): QuickReactionState {
-        val event = session.getRoom(state.roomId)?.getTimeLineEvent(state.eventId) ?: return state
-        val summary = event.annotations?.reactionsSummary
-        val quickReactions = quickEmojis.map { emoji ->
-            ToggleState(emoji, summary?.firstOrNull { it.key == emoji }?.addedByMe ?: false)
-        }
-        return state.copy(quickStates = quickReactions)
+    private fun observeReactions() {
+        if (room == null) return
+        RxRoom(room)
+                .liveAnnotationSummary(eventId)
+                .map { annotations ->
+                    quickEmojis.map { emoji ->
+                        ToggleState(emoji, annotations.reactionsSummary.firstOrNull { it.key == emoji }?.addedByMe
+                                ?: false)
+                    }
+                }
+                .execute {
+                    copy(quickStates = it)
+                }
     }
 
+
     fun didSelect(index: Int) = withState {
-        val isSelected = it.quickStates[index].isSelected
+        val selectedReaction = it.quickStates()?.get(index) ?: return@withState
+        val isSelected = selectedReaction.isSelected
         setState {
-            copy(result = ToggleState(it.quickStates[index].reaction, !isSelected))
+            copy(result = ToggleState(selectedReaction.reaction, !isSelected))
         }
     }
 

vector/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/action/ViewReactionViewModel.kt

@@ -85,10 +85,8 @@ class ViewReactionViewModel @AssistedInject constructor(@Assisted
                 .liveAnnotationSummary(eventId)
                 .flatMapSingle { summaries ->
                     Observable
-                            .fromIterable(summaries)
-                            .flatMapIterable { it.reactionsSummary
-                                    .filter { reactionAggregatedSummary ->  isSingleEmoji(reactionAggregatedSummary.key) }
-                                }
+                            .fromIterable(summaries.reactionsSummary)
+                            .filter { reactionAggregatedSummary -> isSingleEmoji(reactionAggregatedSummary.key) }
                             .toReactionInfoList()
                 }
                 .execute {
@@ -112,7 +110,6 @@ class ViewReactionViewModel @AssistedInject constructor(@Assisted
                                 timelineDateFormatter.formatMessageHour(localDate)
                         )
                     }
-        }
-                .toList()
+        }.toList()
     }
 }