Merge pull request #1896 from famedly/nico/fix-leave-invite-chain

fix: leave->invite in the same sync would hide the invite

.github/workflows/app.yml

@@ -49,7 +49,6 @@ jobs:
           path: coverage_dir/
           retention-days: 1
 
-
   coverage:
     runs-on: arm-ubuntu-latest-16core
     steps:
@@ -61,6 +60,10 @@ jobs:
           architecture: "arm64"
       - name: Run tests
         run: |
+          # Prevent restarting the github actions service on package upgrades
+          # See https://discourse.ubuntu.com/t/needrestart-changes-in-ubuntu-24-04-service-restarts/44671
+          echo '$nrconf{override_rc}{qr(^actions.runner.*.service$)} = 0;' | sudo tee /etc/needrestart/conf.d/githubactions.conf
+
           sudo apt-get update && sudo apt-get install --no-install-recommends --no-install-suggests -y lcov libsqlite3-0 libsqlite3-dev libolm3 libssl3
           ./scripts/test.sh
       - uses: actions/upload-artifact@v4
@@ -70,7 +73,6 @@ jobs:
           path: coverage_dir/
           retention-days: 1
 
-
   merge_converage:
     if: ${{ !cancelled() }}
     runs-on: ubuntu-latest

lib/src/client.dart

@@ -2037,14 +2037,18 @@ class Client extends MatrixApi {
       if (join != null) {
         await _handleRooms(join, direction: direction);
       }
-      final invite = sync.rooms?.invite;
-      if (invite != null) {
-        await _handleRooms(invite, direction: direction);
-      }
+      // We need to handle leave before invite. If you decline an invite and
+      // then get another invite to the same room, Synapse will include the
+      // room both in invite and leave. If you get an invite and then leave, it
+      // will only be included in leave.
       final leave = sync.rooms?.leave;
       if (leave != null) {
         await _handleRooms(leave, direction: direction);
       }
+      final invite = sync.rooms?.invite;
+      if (invite != null) {
+        await _handleRooms(invite, direction: direction);
+      }
     }
     for (final newPresence in sync.presence ?? <Presence>[]) {
       final cachedPresence = CachedPresence.fromMatrixEvent(newPresence);

test/client_test.dart

@@ -709,6 +709,66 @@ void main() {
       await client.database?.clearCache();
       await client.dispose(closeDatabase: true);
     });
+    test('leaveThenInvite should be invited', () async {
+      // Synapse includes a room in both invite and leave if you leave and get
+      // reinvited while you are offline. The other direction only contains the
+      // room in leave. Verify that we actually store the invite in the first
+      // case. See also
+      // https://github.com/famedly/product-management/issues/2283
+      final client = await getClient();
+      await client.abortSync();
+      client.rooms.clear();
+      await client.database?.clearCache();
+
+      final roomId = '!inviteLeaveRoom:example.com';
+      await client.handleSync(
+        SyncUpdate(
+          nextBatch: 'ABCDEF',
+          rooms: RoomsUpdate(
+            invite: {
+              roomId: InvitedRoomUpdate(
+                inviteState: [
+                  StrippedStateEvent(
+                    type: EventTypes.RoomMember,
+                    senderId: '@bob:example.com',
+                    stateKey: client.userID,
+                    content: {
+                      'membership': 'invite',
+                    },
+                  ),
+                ],
+              ),
+            },
+            leave: {
+              roomId: LeftRoomUpdate(
+                state: [
+                  MatrixEvent(
+                    type: EventTypes.RoomMember,
+                    senderId: client.userID!,
+                    stateKey: client.userID,
+                    originServerTs: DateTime.now(),
+                    eventId:
+                        '\$abcdefwsjaskdfabsjfhabfsjgbahsjfkgbasjffsajfgsfd',
+                    content: {
+                      'membership': 'leave',
+                    },
+                  ),
+                ],
+              ),
+            },
+          ),
+        ),
+      );
+
+      final room = client.getRoomById(roomId);
+
+      expect(room?.membership, Membership.invite);
+
+      await client.abortSync();
+      client.rooms.clear();
+      await client.database?.clearCache();
+      await client.dispose(closeDatabase: true);
+    });
     test('ownProfile', () async {
       final client = await getClient();
       await client.abortSync();