Some clean up on room details

appnav/src/main/kotlin/io/element/android/appnav/RoomFlowNode.kt

@@ -18,8 +18,8 @@ package io.element.android.appnav
 
 import android.os.Parcelable
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.DisposableEffect
 import androidx.compose.ui.Modifier
+import androidx.lifecycle.lifecycleScope
 import com.bumble.appyx.core.composable.Children
 import com.bumble.appyx.core.lifecycle.subscribe
 import com.bumble.appyx.core.modality.BuildContext
@@ -45,6 +45,7 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
+import kotlinx.coroutines.launch
 import kotlinx.parcelize.Parcelize
 import timber.log.Timber
 
@@ -56,7 +57,6 @@ class RoomFlowNode @AssistedInject constructor(
     private val roomDetailsEntryPoint: RoomDetailsEntryPoint,
     private val appNavigationStateService: AppNavigationStateService,
     roomMembershipObserver: RoomMembershipObserver,
-    coroutineScope: CoroutineScope,
 ) : BackstackNode<RoomFlowNode.NavTarget>(
     backstack = BackStack(
         initialElement = NavTarget.Messages,
@@ -76,9 +76,6 @@ class RoomFlowNode @AssistedInject constructor(
     ) : NodeInputs
 
     private val inputs: Inputs = inputs()
-    private val timeline = inputs.room.timeline()
-
-    private val roomFlowPresenter = RoomFlowPresenter(inputs.room)
 
     init {
         lifecycle.subscribe(
@@ -95,22 +92,34 @@ class RoomFlowNode @AssistedInject constructor(
             }
         )
 
+        lifecycleScope.fetchRoomMembers()
         roomMembershipObserver.updates
             .filter { update -> update.roomId == inputs.room.roomId && !update.isUserInRoom }
             .onEach {
                 navigateUp()
             }
-            .launchIn(coroutineScope)
+            .launchIn(lifecycleScope)
+    }
+
+    private fun CoroutineScope.fetchRoomMembers() = launch {
+        val room = inputs.room
+        room.fetchMembers()
+            .onFailure {
+                Timber.e(it, "Fail to fetch members for room ${room.roomId}")
+            }.onSuccess {
+                Timber.v("Success fetching members for room ${room.roomId}")
+            }
     }
 
     override fun resolve(navTarget: NavTarget, buildContext: BuildContext): Node {
         return when (navTarget) {
             NavTarget.Messages -> {
-                messagesEntryPoint.createNode(this, buildContext, object : MessagesEntryPoint.Callback {
+                val callback = object : MessagesEntryPoint.Callback {
                     override fun onRoomDetailsClicked() {
                         backstack.push(NavTarget.RoomDetails)
                     }
-                })
+                }
+                messagesEntryPoint.createNode(this, buildContext, callback)
             }
             NavTarget.RoomDetails -> {
                 roomDetailsEntryPoint.createNode(this, buildContext, emptyList())
@@ -128,7 +137,6 @@ class RoomFlowNode @AssistedInject constructor(
 
     @Composable
     override fun View(modifier: Modifier) {
-        roomFlowPresenter.present()
         Children(
             navModel = backstack,
             modifier = modifier,

appnav/src/main/kotlin/io/element/android/appnav/RoomFlowPresenter.kt

@@ -1,46 +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.appnav
-
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import io.element.android.libraries.architecture.Presenter
-import io.element.android.libraries.matrix.api.room.MatrixRoom
-import timber.log.Timber
-
-class RoomFlowPresenter(
-    private val room: MatrixRoom,
-) : Presenter<RoomFlowState> {
-
-    @Composable
-    override fun present(): RoomFlowState {
-        // Preload room members so we can quickly detect if the room is a DM room
-        LaunchedEffect(Unit) {
-            room.fetchMembers()
-                .onFailure {
-                    Timber.e(it, "Fail to fetch members for room ${room.roomId}")
-                }.onSuccess {
-                    Timber.v("Success fetching members for room ${room.roomId}")
-                }
-        }
-
-        return RoomFlowState
-    }
-}
-
-// At first the return type was Unit, but detekt complained about it
-object RoomFlowState

features/roomdetails/impl/src/main/kotlin/io/element/android/features/roomdetails/impl/RoomDetailsFlowNode.kt

@@ -56,19 +56,16 @@ class RoomDetailsFlowNode @AssistedInject constructor(
         object RoomMemberList : NavTarget
     }
 
-    interface Callback : Plugin {
-        fun openRoomMemberList()
-    }
-
-    val callback = object : Callback {
-        override fun openRoomMemberList() {
-            backstack.push(NavTarget.RoomMemberList)
-        }
-    }
-
     override fun resolve(navTarget: NavTarget, buildContext: BuildContext): Node {
         return when (navTarget) {
-            NavTarget.RoomDetails -> createNode<RoomDetailsNode>(buildContext, listOf(callback))
+            NavTarget.RoomDetails -> {
+                val callback = object : RoomDetailsNode.Callback {
+                    override fun openRoomMemberList() {
+                        backstack.push(NavTarget.RoomMemberList)
+                    }
+                }
+                createNode<RoomDetailsNode>(buildContext, listOf(callback))
+            }
             NavTarget.RoomMemberList -> createNode<RoomMemberListNode>(buildContext)
         }
     }

features/roomdetails/impl/src/main/kotlin/io/element/android/features/roomdetails/impl/RoomDetailsNode.kt

@@ -41,7 +41,11 @@ class RoomDetailsNode @AssistedInject constructor(
     private val room: MatrixRoom,
 ) : Node(buildContext, plugins = plugins) {
 
-    private val callback = plugins<RoomDetailsFlowNode.Callback>().firstOrNull()
+    interface Callback : Plugin {
+        fun openRoomMemberList()
+    }
+
+    private val callback = plugins<Callback>().firstOrNull()
 
     private fun openRoomMemberList() {
         callback?.openRoomMemberList()

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

@@ -56,5 +56,5 @@ interface MatrixRoom: Closeable {
 
     suspend fun redactEvent(eventId: EventId, reason: String? = null): Result<Unit>
 
-    fun leave(): Result<Unit>
+    suspend fun leave(): Result<Unit>
 }

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

@@ -88,6 +88,7 @@ class RustMatrixRoom(
             coroutineDispatchers = coroutineDispatchers
         )
     }
+
     override fun close() {
         innerRoom.destroy()
         slidingSyncRoom.destroy()
@@ -183,7 +184,9 @@ class RustMatrixRoom(
         }
     }
 
-    override fun leave(): Result<Unit> {
-        return runCatching { innerRoom.leave() }
+    override suspend fun leave(): Result<Unit> = withContext(coroutineDispatchers.io) {
+        runCatching {
+            innerRoom.leave()
+        }
     }
 }

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

@@ -117,7 +117,7 @@ class FakeMatrixRoom(
         return Result.success(Unit)
     }
 
-    override fun leave(): Result<Unit> = leaveRoomError?.let { Result.failure(it) } ?: Result.success(Unit)
+    override suspend fun leave(): Result<Unit> = leaveRoomError?.let { Result.failure(it) } ?: Result.success(Unit)
 
     override fun close() = Unit