Merge pull request #1726 from famedly/nico/fix-state-handling-after-invite

fix state handling after invite

lib/src/client.dart

@@ -1071,19 +1071,19 @@ class Client extends MatrixApi {
                 []));
 
     archivedRoom.prev_batch = update.timeline?.prevBatch;
-    update.state?.forEach((event) {
-      archivedRoom.setState(Event.fromMatrixEvent(
-        event,
-        archivedRoom,
-      ));
-    });
 
-    update.timeline?.events?.forEach((event) {
+    final stateEvents = roomUpdate.state;
-      archivedRoom.setState(Event.fromMatrixEvent(
+    if (stateEvents != null) {
-        event,
+      await _handleRoomEvents(archivedRoom, stateEvents, EventUpdateType.state,
-        archivedRoom,
+          store: false);
-      ));
+    }
-    });
+
+    final timelineEvents = roomUpdate.timeline?.events;
+    if (timelineEvents != null) {
+      await _handleRoomEvents(archivedRoom, timelineEvents.reversed.toList(),
+          EventUpdateType.timeline,
+          store: false);
+    }
 
     for (var i = 0; i < timeline.events.length; i++) {
       // Try to decrypt encrypted events but don't update the database.
@@ -2463,6 +2463,10 @@ class Client extends MatrixApi {
           final importantOrRoomLoaded =
               eventUpdate.type == EventUpdateType.inviteState ||
                   !room.partial ||
+                  // make sure we do overwrite events we have already loaded.
+                  room.states[stateEvent.type]
+                          ?.containsKey(stateEvent.stateKey ?? '') ==
+                      true ||
                   importantStateEvents.contains(stateEvent.type);
           if ((noMessageOrNoEdit || editingLastEvent || consecutiveEdit) &&
               importantOrRoomLoaded) {

lib/src/event.dart

@@ -210,10 +210,8 @@ class Event extends MatrixEvent {
         type: jsonPayload['type'],
         eventId: jsonPayload['event_id'] ?? '',
         senderId: jsonPayload['sender'],
-        originServerTs: jsonPayload['origin_server_ts'] != null
+        originServerTs: DateTime.fromMillisecondsSinceEpoch(
-            ? DateTime.fromMillisecondsSinceEpoch(
+            jsonPayload['origin_server_ts'] ?? 0),
-                jsonPayload['origin_server_ts'])
-            : DateTime.now(),
         unsigned: unsigned,
         room: room,
         originalSource: originalSource.isEmpty

lib/src/room.dart

@@ -196,15 +196,6 @@ class Room {
       return;
     }
 
-    // Do not set old events as state events
-    final prevEvent = getState(state.type, stateKey);
-    if (prevEvent != null &&
-        prevEvent.eventId != state.eventId &&
-        prevEvent.originServerTs.millisecondsSinceEpoch >
-            state.originServerTs.millisecondsSinceEpoch) {
-      return;
-    }
-
     (states[state.type] ??= {})[stateKey] = state;
 
     client.onRoomState.add(state);
@@ -1574,8 +1565,6 @@ class Room {
     return <User>[];
   }
 
-  bool _requestedParticipants = false;
-
   /// Request the full list of participants from the server. The local list
   /// from the store is not complete if the client uses lazy loading.
   /// List `membershipFilter` defines with what membership do you want the
@@ -1591,17 +1580,20 @@ class Room {
       ],
       bool suppressWarning = false,
       bool cache = true]) async {
-    if (!participantListComplete && partial) {
+    if (!participantListComplete || partial) {
       // we aren't fully loaded, maybe the users are in the database
+      // We always need to check the database in the partial case, since state
+      // events won't get written to memory in this case and someone new could
+      // have joined, while someone else left, which might lead to the same
+      // count in the completeness check.
       final users = await client.database?.getUsers(this) ?? [];
       for (final user in users) {
         setState(user);
       }
     }
 
-    // Do not request users from the server if we have already done it
+    // Do not request users from the server if we have already have a complete list locally.
-    // in this session or have a complete list locally.
+    if (participantListComplete) {
-    if (_requestedParticipants || participantListComplete) {
       return getParticipants(membershipFilter);
     }
 
@@ -1626,7 +1618,6 @@ class Room {
       }
     }
 
-    _requestedParticipants = cache;
     users.removeWhere((u) => !membershipFilter.contains(u.membership));
     return users;
   }
@@ -1634,10 +1625,14 @@ class Room {
   /// Checks if the local participant list of joined and invited users is complete.
   bool get participantListComplete {
     final knownParticipants = getParticipants();
-    knownParticipants.removeWhere(
+    final joinedCount =
-        (u) => ![Membership.join, Membership.invite].contains(u.membership));
+        knownParticipants.where((u) => u.membership == Membership.join).length;
-    return knownParticipants.length ==
+    final invitedCount = knownParticipants
-        (summary.mJoinedMemberCount ?? 0) + (summary.mInvitedMemberCount ?? 0);
+        .where((u) => u.membership == Membership.invite)
+        .length;
+
+    return (summary.mJoinedMemberCount ?? 0) == joinedCount &&
+        (summary.mInvitedMemberCount ?? 0) == invitedCount;
   }
 
   @Deprecated(

test/room_test.dart

@@ -70,6 +70,7 @@ void main() {
           ),
         },
       );
+
       room.setState(Event(
         room: room,
         eventId: '143273582443PhrSn:example.org',
@@ -80,6 +81,46 @@ void main() {
         content: {'join_rule': 'public'},
         stateKey: '',
       ));
+      room.setState(Event(
+        room: room,
+        eventId: '143273582443PhrSnY:example.org',
+        originServerTs: DateTime.fromMillisecondsSinceEpoch(1432735824653),
+        senderId: matrix.userID!,
+        type: 'm.room.member',
+        unsigned: {'age': 1234},
+        content: {'membership': 'join', 'displayname': 'YOU'},
+        stateKey: matrix.userID!,
+      ));
+      room.setState(Event(
+        room: room,
+        eventId: '143273582443PhrSnA:example.org',
+        originServerTs: DateTime.fromMillisecondsSinceEpoch(1432735824653),
+        senderId: '@alice:matrix.org',
+        type: 'm.room.member',
+        unsigned: {'age': 1234},
+        content: {'membership': 'join', 'displayname': 'Alice Margatroid'},
+        stateKey: '@alice:matrix.org',
+      ));
+      room.setState(Event(
+        room: room,
+        eventId: '143273582443PhrSnB:example.org',
+        originServerTs: DateTime.fromMillisecondsSinceEpoch(1432735824653),
+        senderId: '@bob:example.com',
+        type: 'm.room.member',
+        unsigned: {'age': 1234},
+        content: {'membership': 'invite', 'displayname': 'Bob'},
+        stateKey: '@bob:example.com',
+      ));
+      room.setState(Event(
+        room: room,
+        eventId: '143273582443PhrSnC:example.org',
+        originServerTs: DateTime.fromMillisecondsSinceEpoch(1432735824653),
+        senderId: '@charley:example.org',
+        type: 'm.room.member',
+        unsigned: {'age': 1234},
+        content: {'membership': 'invite', 'displayname': 'Charley'},
+        stateKey: '@charley:example.org',
+      ));
 
       final heroUsers = await room.loadHeroUsers();
       expect(heroUsers.length, 3);
@@ -89,9 +130,10 @@ void main() {
       expect(room.notificationCount, notificationCount);
       expect(room.highlightCount, highlightCount);
       expect(room.summary.mJoinedMemberCount, notificationCount);
-      expect(room.summary.mInvitedMemberCount, notificationCount);
+      expect(room.summary.mInvitedMemberCount, 2);
       expect(room.summary.mHeroes, heroes);
-      expect(room.getLocalizedDisplayname(), 'Group with Alice, Bob, Charley');
+      expect(room.getLocalizedDisplayname(),
+          'Group with Alice Margatroid, Bob, Charley');
       expect(
           room.getState('m.room.join_rules')?.content['join_rule'], 'public');
       expect(room.roomAccountData['com.test.foo']?.content['foo'], 'bar');
@@ -434,12 +476,12 @@ void main() {
 
     test('requestParticipants', () async {
       final participants = await room.requestParticipants();
-      expect(participants.length, 1);
+      expect(participants.length, 4);
-      final user = participants[0];
+      final user = participants.singleWhere((u) => u.id == '@alice:matrix.org');
-      expect(user.id, '@alice:example.org');
+      expect(user.id, '@alice:matrix.org');
       expect(user.displayName, 'Alice Margatroid');
       expect(user.membership, Membership.join);
-      expect(user.avatarUrl.toString(), 'mxc://example.org/SEsfnsuifSDFSSEF');
+      //expect(user.avatarUrl.toString(), 'mxc://example.org/SEsfnsuifSDFSSEF');
       expect(user.room.id, '!localpart:server.abc');
     });
 
@@ -1405,10 +1447,13 @@ void main() {
 
     test('getMention', () async {
       expect(room.getMention('@invalid'), null);
-      expect(room.getMention('@[Alice Margatroid]'), '@alice:example.org');
+      expect(room.getMention('@[Alice Margatroid]'), '@alice:matrix.org');
-      expect(room.getMention('@[Alice Margatroid]#1754'), '@alice:example.org');
+      expect(room.getMention('@[Alice Margatroid]#1667'), '@alice:matrix.org');
     });
     test('inviteLink', () async {
+      // ensure we don't rerequest members
+      room.summary.mJoinedMemberCount = 4;
+
       var matrixToLink = await room.matrixToInviteLink();
       expect(matrixToLink.toString(),
           'https://matrix.to/#/%23testalias%3Aexample.com');
@@ -1424,7 +1469,7 @@ void main() {
       );
       matrixToLink = await room.matrixToInviteLink();
       expect(matrixToLink.toString(),
-          'https://matrix.to/#/!localpart%3Aserver.abc?via=example.org&via=example.com&via=test.abc');
+          'https://matrix.to/#/!localpart%3Aserver.abc?via=example.com&via=test.abc&via=example.org');
     });
 
     test('callMemberStateIsExpired', () {