Use client.cachedAvatarUrl(), to be able to render the user avatar faster, and even if there is no network (#2488).

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/MatrixClient.kt

@@ -42,6 +42,7 @@ import java.io.Closeable
 interface MatrixClient : Closeable {
     val sessionId: SessionId
     val deviceId: String
+    val userProfile: StateFlow<MatrixUser>
     val roomListService: RoomListService
     val mediaLoader: MatrixMediaLoader
     val sessionCoroutineScope: CoroutineScope
@@ -77,8 +78,11 @@ interface MatrixClient : Closeable {
      * @param ignoreSdkError if true, the SDK will ignore any error and delete the session data anyway.
      */
     suspend fun logout(ignoreSdkError: Boolean): String?
-    suspend fun loadUserDisplayName(): Result<String>
-    suspend fun loadUserAvatarUrl(): Result<String?>
+
+    /**
+     * Retrieve the user profile, will also eventually emit a new value to [userProfile].
+     */
+    suspend fun getUserProfile(): Result<MatrixUser>
     suspend fun getAccountManagementUrl(action: AccountManagementAction?): Result<String?>
     suspend fun uploadMedia(mimeType: String, data: ByteArray, progressCallback: ProgressCallback?): Result<String>
     fun roomMembershipObserver(): RoomMembershipObserver

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/user/CurrentUser.kt

@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2023 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.element.android.libraries.matrix.api.user
-
-import io.element.android.libraries.matrix.api.MatrixClient
-
-/**
- * Get the current user, as [MatrixUser], using  [MatrixClient.loadUserAvatarUrl]
- * and [MatrixClient.loadUserDisplayName].
- */
-suspend fun MatrixClient.getCurrentUser(): MatrixUser {
-    val userAvatarUrl = loadUserAvatarUrl().getOrNull()
-    val userDisplayName = loadUserDisplayName().getOrNull()
-    return MatrixUser(
-        userId = sessionId,
-        displayName = userDisplayName,
-        avatarUrl = userAvatarUrl,
-    )
-}

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/RustMatrixClient.kt

@@ -73,7 +73,9 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.buffer
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.first
@@ -249,6 +251,17 @@ class RustMatrixClient(
 
     private val clientDelegateTaskHandle: TaskHandle? = client.setDelegate(clientDelegate)
 
+    private val _userProfile: MutableStateFlow<MatrixUser> = MutableStateFlow(
+        MatrixUser(
+            userId = sessionId,
+            // TODO cache for displayName?
+            displayName = null,
+            avatarUrl = client.cachedAvatarUrl(),
+        )
+    )
+
+    override val userProfile: StateFlow<MatrixUser> = _userProfile
+
     override val ignoredUsersFlow = mxCallbackFlow<ImmutableList<UserId>> {
         client.subscribeToIgnoredUsers(object : IgnoredUsersListener {
             override fun call(ignoredUserIds: List<String>) {
@@ -265,6 +278,10 @@ class RustMatrixClient(
                 setupVerificationControllerIfNeeded()
             }
         }.launchIn(sessionCoroutineScope)
+        sessionCoroutineScope.launch {
+            // Force a refresh of the profile
+            getUserProfile()
+        }
     }
 
     override suspend fun getRoom(roomId: RoomId): MatrixRoom? = withContext(sessionDispatcher) {
@@ -374,6 +391,9 @@ class RustMatrixClient(
         }
     }
 
+    override suspend fun getUserProfile(): Result<MatrixUser> = getProfile(sessionId)
+        .onSuccess { _userProfile.tryEmit(it) }
+
     override suspend fun searchUsers(searchTerm: String, limit: Long): Result<MatrixSearchUserResults> =
         withContext(sessionDispatcher) {
             runCatching {
@@ -471,18 +491,6 @@ class RustMatrixClient(
         }
     }
 
-    override suspend fun loadUserDisplayName(): Result<String> = withContext(sessionDispatcher) {
-        runCatching {
-            client.displayName()
-        }
-    }
-
-    override suspend fun loadUserAvatarUrl(): Result<String?> = withContext(sessionDispatcher) {
-        runCatching {
-            client.avatarUrl()
-        }
-    }
-
     override suspend fun uploadMedia(mimeType: String, data: ByteArray, progressCallback: ProgressCallback?): Result<String> = withContext(sessionDispatcher) {
         runCatching {
             client.uploadMedia(mimeType, data, progressCallback?.toProgressWatcher())

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/FakeMatrixClient.kt

@@ -48,14 +48,15 @@ import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.test.TestScope
 
 class FakeMatrixClient(
     override val sessionId: SessionId = A_SESSION_ID,
     override val deviceId: String = "A_DEVICE_ID",
     override val sessionCoroutineScope: CoroutineScope = TestScope(),
-    private val userDisplayName: Result<String> = Result.success(A_USER_NAME),
-    private val userAvatarUrl: Result<String> = Result.success(AN_AVATAR_URL),
+    private val userDisplayName: String? = A_USER_NAME,
+    private val userAvatarUrl: String? = AN_AVATAR_URL,
     override val roomListService: RoomListService = FakeRoomListService(),
     override val mediaLoader: MatrixMediaLoader = FakeMediaLoader(),
     private val sessionVerificationService: FakeSessionVerificationService = FakeSessionVerificationService(),
@@ -73,6 +74,8 @@ class FakeMatrixClient(
     var removeAvatarCalled: Boolean = false
         private set
 
+    private val _userProfile: MutableStateFlow<MatrixUser> = MutableStateFlow(MatrixUser(sessionId, userDisplayName, userAvatarUrl))
+    override val userProfile: StateFlow<MatrixUser> = _userProfile
     override val ignoredUsersFlow: MutableStateFlow<ImmutableList<UserId>> = MutableStateFlow(persistentListOf())
 
     private var ignoreUserResult: Result<Unit> = Result.success(Unit)
@@ -140,12 +143,10 @@ class FakeMatrixClient(
 
     override fun close() = Unit
 
-    override suspend fun loadUserDisplayName(): Result<String> {
-        return userDisplayName
-    }
-
-    override suspend fun loadUserAvatarUrl(): Result<String?> {
-        return userAvatarUrl
+    override suspend fun getUserProfile(): Result<MatrixUser> = simulateLongTask {
+        val result = getProfileResults[sessionId]?.getOrNull() ?: MatrixUser(sessionId, userDisplayName, userAvatarUrl)
+        _userProfile.tryEmit(result)
+        return Result.success(result)
     }
 
     override suspend fun getAccountManagementUrl(action: AccountManagementAction?): Result<String?> {

libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotificationDrawerManager.kt

@@ -292,23 +292,30 @@ class DefaultNotificationDrawerManager @Inject constructor(
         eventsForSessions.forEach { (sessionId, notifiableEvents) ->
             val client = matrixClientProvider.getOrRestore(sessionId).getOrThrow()
             val imageLoader = imageLoaderHolder.get(client)
-            val currentUser = tryOrNull(
-                onError = { Timber.tag(loggerTag.value).e(it, "Unable to retrieve info for user ${sessionId.value}") },
-                operation = {
-                    // myUserDisplayName cannot be empty else NotificationCompat.MessagingStyle() will crash
-                    val myUserDisplayName = client.loadUserDisplayName().getOrNull() ?: sessionId.value
-                    val userAvatarUrl = client.loadUserAvatarUrl().getOrNull()
-                    MatrixUser(
-                        userId = sessionId,
-                        displayName = myUserDisplayName,
-                        avatarUrl = userAvatarUrl
-                    )
-                }
-            ) ?: MatrixUser(
-                userId = sessionId,
-                displayName = sessionId.value,
-                avatarUrl = null
-            )
+            val userFromCache = client.userProfile.value
+            val currentUser = if (userFromCache.avatarUrl != null && userFromCache.displayName.isNullOrEmpty().not()) {
+                // We have an avatar and a display name, use it
+                userFromCache
+            } else {
+                tryOrNull(
+                    onError = { Timber.tag(loggerTag.value).e(it, "Unable to retrieve info for user ${sessionId.value}") },
+                    operation = {
+                        client.getUserProfile().getOrNull()
+                            ?.let {
+                                // displayName cannot be empty else NotificationCompat.MessagingStyle() will crash
+                                if (it.displayName.isNullOrEmpty()) {
+                                    it.copy(displayName = sessionId.value)
+                                } else {
+                                    it
+                                }
+                            }
+                    }
+                ) ?: MatrixUser(
+                    userId = sessionId,
+                    displayName = sessionId.value,
+                    avatarUrl = null
+                )
+            }
 
             notificationRenderer.render(currentUser, useCompleteNotificationFormat, notifiableEvents, imageLoader)
         }