RoomSummary: don't fetch last event by default as it takes some time

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

@@ -24,8 +24,8 @@ import io.reactivex.Observable
 
 class RxRoom(private val room: Room) {
 
-    fun liveRoomSummary(): Observable<RoomSummary> {
+    fun liveRoomSummary(fetchLastEvent: Boolean): Observable<RoomSummary> {
-        return room.liveRoomSummary.asObservable()
+        return room.liveRoomSummary(fetchLastEvent).asObservable()
     }
 
     fun liveRoomMemberIds(): Observable<List<String>> {

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

@@ -25,8 +25,8 @@ import io.reactivex.Observable
 
 class RxSession(private val session: Session) {
 
-    fun liveRoomSummaries(): Observable<List<RoomSummary>> {
+    fun liveRoomSummaries(fetchLastEvents: Boolean): Observable<List<RoomSummary>> {
-        return session.liveRoomSummaries().asObservable()
+        return session.liveRoomSummaries(fetchLastEvents).asObservable()
     }
 
     fun liveGroupSummaries(): Observable<List<GroupSummary>> {

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

@@ -47,8 +47,8 @@ interface Room :
      * A live [RoomSummary] associated with the room
      * You can observe this summary to get dynamic data from this room.
      */
-    val liveRoomSummary: LiveData<RoomSummary>
+    fun liveRoomSummary(fetchLastEvent: Boolean = false): LiveData<RoomSummary>
 
-    val roomSummary: RoomSummary?
+    fun roomSummary(fetchLastEvent: Boolean = false): RoomSummary?
 
 }

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

@@ -43,6 +43,6 @@ interface RoomService {
      * Get a live list of room summaries. This list is refreshed as soon as the data changes.
      * @return the [LiveData] of [RoomSummary]
      */
-    fun liveRoomSummaries(): LiveData<List<RoomSummary>>
+    fun liveRoomSummaries(fetchLastEvents: Boolean = true): LiveData<List<RoomSummary>>
 
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/mapper/RoomSummaryMapper.kt

@@ -16,29 +16,24 @@
 
 package im.vector.matrix.android.internal.database.mapper
 
-import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.session.room.model.RoomSummary
 import im.vector.matrix.android.api.session.room.model.tag.RoomTag
-import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
 import im.vector.matrix.android.internal.session.room.timeline.TimelineEventFactory
 import javax.inject.Inject
 
+internal class RoomSummaryMapper @Inject constructor(private val timelineEventFactory: TimelineEventFactory) {
 
-internal class RoomSummaryMapper @Inject constructor(
+    fun map(roomSummaryEntity: RoomSummaryEntity, getLatestEvent: Boolean = false): RoomSummary {
-        private val timelineEventFactory: TimelineEventFactory,
-        private val monarchy: Monarchy) {
-
-    fun map(roomSummaryEntity: RoomSummaryEntity): RoomSummary {
         val tags = roomSummaryEntity.tags.map {
             RoomTag(it.tagName, it.tagOrder)
         }
-        val latestEvent = roomSummaryEntity.latestEvent?.let {
+        val latestEvent = if (getLatestEvent) {
-            var ev: TimelineEvent? = null
+            roomSummaryEntity.latestEvent?.let {
-            monarchy.doWithRealm { realm ->
+                timelineEventFactory.create(it, it.realm)
-                ev = timelineEventFactory.create(it, realm)
             }
-            ev
+        } else {
+            null
         }
         return RoomSummary(
                 roomId = roomSummaryEntity.roomId,

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

@@ -34,6 +34,7 @@ import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
 import im.vector.matrix.android.internal.database.model.RoomSummaryEntityFields
 import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.util.fetchCopied
+import im.vector.matrix.android.internal.util.fetchCopyMap
 import javax.inject.Inject
 
 internal class DefaultRoom @Inject constructor(override val roomId: String,
@@ -54,12 +55,12 @@ internal class DefaultRoom @Inject constructor(override val roomId: String,
     RelationService by relationService,
     MembershipService by roomMembersService {
 
-    override val liveRoomSummary: LiveData<RoomSummary> by lazy {
+    override fun liveRoomSummary(fetchLastEvent: Boolean): LiveData<RoomSummary> {
         val liveRealmData = RealmLiveData<RoomSummaryEntity>(monarchy.realmConfiguration) { realm ->
             RoomSummaryEntity.where(realm, roomId).isNotEmpty(RoomSummaryEntityFields.DISPLAY_NAME)
         }
-        Transformations.map(liveRealmData) { results ->
+        return Transformations.map(liveRealmData) { results ->
-            val roomSummaries = results.map { roomSummaryMapper.map(it) }
+            val roomSummaries = results.map { roomSummaryMapper.map(it, fetchLastEvent) }
 
             if (roomSummaries.isEmpty()) {
                 // Create a dummy RoomSummary to avoid Crash during Sign Out or clear cache
@@ -70,10 +71,11 @@ internal class DefaultRoom @Inject constructor(override val roomId: String,
         }
     }
 
-    override val roomSummary: RoomSummary?
+    override fun roomSummary(fetchLastEvent: Boolean): RoomSummary? {
-        get() {
+        return monarchy.fetchAllMappedSync(
-            var sum: RoomSummaryEntity? = monarchy.fetchCopied { RoomSummaryEntity.where(it, roomId).isNotEmpty(RoomSummaryEntityFields.DISPLAY_NAME).findFirst() }
+                { realm -> RoomSummaryEntity.where(realm).isNotEmpty(RoomSummaryEntityFields.DISPLAY_NAME) },
-            return sum?.let { roomSummaryMapper.map(it) }
+                { roomSummaryMapper.map(it, fetchLastEvent) }
+        ).firstOrNull()
     }
 
     override fun isEncrypted(): Boolean {

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

@@ -52,10 +52,10 @@ internal class DefaultRoomService @Inject constructor(private val monarchy: Mona
         return roomFactory.create(roomId)
     }
 
-    override fun liveRoomSummaries(): LiveData<List<RoomSummary>> {
+    override fun liveRoomSummaries(fetchLastEvents: Boolean): LiveData<List<RoomSummary>> {
         return monarchy.findAllMappedWithChanges(
                 { realm -> RoomSummaryEntity.where(realm).isNotEmpty(RoomSummaryEntityFields.DISPLAY_NAME) },
-                { roomSummaryMapper.map(it) }
+                { roomSummaryMapper.map(it, fetchLastEvents) }
         )
     }
 }

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

@@ -80,7 +80,7 @@ internal class SimpleTimelineEventFactory @Inject constructor(private val roomMe
             val result = cryptoService.decryptEvent(event, UUID.randomUUID().toString())
             event.setClearData(result)
         } catch (failure: Throwable) {
-            Timber.e(failure, "Encrypted event: decryption failed")
+            Timber.e("Encrypted event: decryption failed")
             if (failure is MXDecryptionException) {
                 event.setCryptoError(failure.cryptoError)
             }

vector/src/main/java/im/vector/riotx/features/home/HomeActivityViewModel.kt

@@ -73,7 +73,7 @@ class HomeActivityViewModel @AssistedInject constructor(@Assisted initialState:
     private fun observeRoomAndGroup() {
         Observable
                 .combineLatest<List<RoomSummary>, Option<GroupSummary>, List<RoomSummary>>(
-                        session.rx().liveRoomSummaries().throttleLast(300, TimeUnit.MILLISECONDS),
+                        session.rx().liveRoomSummaries(fetchLastEvents = true).throttleLast(300, TimeUnit.MILLISECONDS),
                         selectedGroupStore.observe(),
                         BiFunction { rooms, selectedGroupOption ->
                             val selectedGroup = selectedGroupOption.orNull()

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailViewModel.kt

@@ -498,7 +498,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     }
 
     private fun observeRoomSummary() {
-        room.rx().liveRoomSummary()
+        room.rx().liveRoomSummary(false)
                 .execute { async ->
                     copy(
                             asyncRoomSummary = async,

vector/src/main/java/im/vector/riotx/features/notifications/NotifiableEventResolver.kt

@@ -117,7 +117,7 @@ class NotifiableEventResolver @Inject constructor(private val stringProvider: St
             val body = event.annotations?.editSummary?.aggregatedContent?.toModel<MessageContent>()?.body
                        ?: event.root.getClearContent().toModel<MessageContent>()?.body
                        ?: stringProvider.getString(R.string.notification_unknown_new_event)
-            val roomName = room.roomSummary?.displayName ?: ""
+            val roomName = room.roomSummary()?.displayName ?: ""
             val senderDisplayName = event.senderName ?: event.root.senderId
 
             val notifiableEvent = NotifiableMessageEvent(
@@ -129,7 +129,7 @@ class NotifiableEventResolver @Inject constructor(private val stringProvider: St
                     body = body,
                     roomId = event.root.roomId!!,
                     roomName = roomName,
-                    roomIsDirect = room.roomSummary?.isDirect ?: false)
+                    roomIsDirect = room.roomSummary()?.isDirect ?: false)
 
             notifiableEvent.matrixID = session.sessionParams.credentials.userId
             notifiableEvent.soundName = null
@@ -137,7 +137,7 @@ class NotifiableEventResolver @Inject constructor(private val stringProvider: St
             // Get the avatars URL
             // TODO They will be not displayed the first time (known limitation)
             notifiableEvent.roomAvatarPath = session.contentUrlResolver()
-                    .resolveThumbnail(room.roomSummary?.avatarUrl,
+                    .resolveThumbnail(room.roomSummary()?.avatarUrl,
                                       250,
                                       250,
                                       ContentUrlResolver.ThumbnailMethod.SCALE)

vector/src/main/java/im/vector/riotx/features/notifications/NotificationBroadcastReceiver.kt

@@ -100,8 +100,8 @@ class NotificationBroadcastReceiver : BroadcastReceiver() {
                 session.sessionParams.credentials.userId,
                 message,
                 room.roomId,
-                room.roomSummary?.displayName ?: room.roomId,
+                room.roomSummary()?.displayName ?: room.roomId,
-                room.roomSummary?.isDirect == true
+                room.roomSummary()?.isDirect == true
         )
         notifiableMessageEvent.outGoingMessage = true
 

vector/src/main/java/im/vector/riotx/features/roomdirectory/RoomDirectoryViewModel.kt

@@ -86,7 +86,7 @@ class RoomDirectoryViewModel @AssistedInject constructor(@Assisted initialState:
     private fun observeJoinedRooms() {
         session
                 .rx()
-                .liveRoomSummaries()
+                .liveRoomSummaries(fetchLastEvents = false)
                 .subscribe { list ->
                     val joinedRoomIds = list
                             // Keep only joined room

vector/src/main/java/im/vector/riotx/features/roomdirectory/roompreview/RoomPreviewViewModel.kt

@@ -54,7 +54,7 @@ class RoomPreviewViewModel @AssistedInject constructor(@Assisted initialState: R
     private fun observeJoinedRooms() {
         session
                 .rx()
-                .liveRoomSummaries()
+                .liveRoomSummaries(fetchLastEvents = false)
                 .subscribe { list ->
                     withState { state ->
                         val isRoomJoined = list