Fix not being able to decline an invite from the room list (#3466)

* Add `InvitedRoom` to wrap Rust SDK Rooms in 'invited' membership state.

At the moment, this is a wrapper that allows us to call `Room.leave()` without having to initialise the room's timeline (which is impossible).

* Add `MatrixRoom.getInvitedRoom(roomId)` to get one of these rooms.

Also, `RustRoomFactory` now has a `createInvitedRoom` method for this.

* Adapt `AcceptDeclineInvitePresenter` to use the new APIs.

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

@@ -29,6 +29,7 @@ import io.element.android.libraries.matrix.api.notificationsettings.Notification
 import io.element.android.libraries.matrix.api.oidc.AccountManagementAction
 import io.element.android.libraries.matrix.api.pusher.PushersService
 import io.element.android.libraries.matrix.api.room.CurrentUserMembership
+import io.element.android.libraries.matrix.api.room.InvitedRoom
 import io.element.android.libraries.matrix.api.room.MatrixRoom
 import io.element.android.libraries.matrix.api.room.MatrixRoomInfo
 import io.element.android.libraries.matrix.api.room.RoomMembershipObserver
@@ -245,6 +246,10 @@ class RustMatrixClient(
         return roomFactory.create(roomId)
     }
 
+    override suspend fun getInvitedRoom(roomId: RoomId): InvitedRoom? {
+        return roomFactory.createInvitedRoom(roomId)
+    }
+
     /**
      * Wait for the room to be available in the room list, with a membership for the current user of [CurrentUserMembership.JOINED].
      * @param roomIdOrAlias the room id or alias to wait for

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

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.impl.room
+
+import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.core.SessionId
+import io.element.android.libraries.matrix.api.room.InvitedRoom
+import org.matrix.rustcomponents.sdk.Room
+
+class RustInvitedRoom(
+    override val sessionId: SessionId,
+    private val invitedRoom: Room,
+) : InvitedRoom {
+    override val roomId = RoomId(invitedRoom.id())
+
+    override suspend fun declineInvite(): Result<Unit> = runCatching {
+        invitedRoom.leave()
+    }
+
+    override fun close() {
+        invitedRoom.destroy()
+    }
+}

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

@@ -14,6 +14,7 @@ import io.element.android.libraries.matrix.api.core.DeviceId
 import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.libraries.matrix.api.core.SessionId
 import io.element.android.libraries.matrix.api.notificationsettings.NotificationSettingsService
+import io.element.android.libraries.matrix.api.room.InvitedRoom
 import io.element.android.libraries.matrix.api.room.MatrixRoom
 import io.element.android.libraries.matrix.api.roomlist.RoomListService
 import io.element.android.libraries.matrix.api.roomlist.awaitLoaded
@@ -27,6 +28,7 @@ import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withContext
 import org.matrix.rustcomponents.sdk.FilterTimelineEventType
+import org.matrix.rustcomponents.sdk.Membership
 import org.matrix.rustcomponents.sdk.Room
 import org.matrix.rustcomponents.sdk.RoomListException
 import org.matrix.rustcomponents.sdk.RoomListItem
@@ -123,6 +125,33 @@ class RustRoomFactory(
         }
     }
 
+    suspend fun createInvitedRoom(roomId: RoomId): InvitedRoom? = withContext(dispatcher) {
+        if (isDestroyed) {
+            Timber.d("Room factory is destroyed, returning null for $roomId")
+            return@withContext null
+        }
+        val roomListItem = innerRoomListService.roomOrNull(roomId.value)
+        if (roomListItem == null) {
+            Timber.d("Room not found for $roomId")
+            return@withContext null
+        }
+        if (roomListItem.membership() != Membership.INVITED) {
+            Timber.d("Room $roomId is not in invited state")
+            return@withContext null
+        }
+        val invitedRoom = try {
+            roomListItem.invitedRoom()
+        } catch (e: RoomListException) {
+            Timber.e(e, "Failed to get invited room for $roomId")
+            return@withContext null
+        }
+
+        RustInvitedRoom(
+            sessionId = sessionId,
+            invitedRoom = invitedRoom,
+        )
+    }
+
     private suspend fun getRoomReferences(roomId: RoomId): RustRoomReferences? {
         cache[roomId]?.let {
             Timber.d("Room found in cache for $roomId")