[Room] fix states with statekeys

lib/famedlysdk.dart

@@ -32,6 +32,7 @@ export 'package:famedlysdk/src/sync/UserUpdate.dart';
 export 'package:famedlysdk/src/utils/ChatTime.dart';
 export 'package:famedlysdk/src/utils/MatrixFile.dart';
 export 'package:famedlysdk/src/utils/MxContent.dart';
+export 'package:famedlysdk/src/utils/StatesMap.dart';
 export 'package:famedlysdk/src/AccountData.dart';
 export 'package:famedlysdk/src/Client.dart';
 export 'package:famedlysdk/src/Connection.dart';

lib/src/Room.dart

@@ -37,6 +37,7 @@ import 'package:mime_type/mime_type.dart';
 import './User.dart';
 import 'Connection.dart';
 import 'Timeline.dart';
+import 'utils/StatesMap.dart';
 
 typedef onRoomUpdate = void Function();
 
@@ -67,8 +68,7 @@ class Room {
   /// The number of users with membership of invite.
   int mInvitedMemberCount;
 
-  /// Key-Value store for room states.
-  Map<String, RoomState> states = {};
+  StatesMap states = StatesMap();
 
   /// Key-Value store for ephemerals.
   Map<String, RoomAccountData> ephemerals = {};
@@ -155,18 +155,16 @@ class Room {
 
   Event get lastEvent {
     ChatTime lastTime = ChatTime(0);
-    Event lastEvent = null;
-    for (final entry in states.entries) {
-      final RoomState state = entry.value;
-      if ((state.time != null && state.time > lastTime) ||
-          state.typeKey == "m.room.message") {
-        lastTime = state.time;
-        lastEvent = state.timelineEvent;
-        if (state.typeKey == "m.room.message") {
-          break;
+    Event lastEvent = states["m.room.message"]?.timelineEvent;
+    if (lastEvent == null)
+      states.forEach((final String key, final entry) {
+        if (!entry.containsKey("")) return;
+        final RoomState state = entry[""];
+        if (state.time != null && state.time > lastTime) {
+          lastTime = state.time;
+          lastEvent = state.timelineEvent;
         }
-      }
-    }
+      });
     return lastEvent;
   }
 
@@ -194,7 +192,6 @@ class Room {
     this.mHeroes = const [],
     this.mInvitedMemberCount = 0,
     this.mJoinedMemberCount = 0,
-    this.states = const {},
     this.roomAccountData = const {},
   });
 
@@ -624,7 +621,6 @@ class Room {
       mJoinedMemberCount: row["joined_member_count"],
       mHeroes: row["heroes"]?.split(",") ?? [],
       client: matrix,
-      states: {},
       roomAccountData: {},
     );
 
@@ -635,7 +631,8 @@ class Room {
         RoomState newState = RoomState.fromJson(rawStates[i], newRoom);
         newStates[newState.key] = newState;
       }
-      newRoom.states = newStates;
+      for (var entry in newStates.entries)
+        newRoom.states[entry.key] = entry.value;
     }
 
     Map<String, RoomAccountData> newRoomAccountData = {};
@@ -682,9 +679,13 @@ class Room {
   /// case.
   List<User> getParticipants() {
     List<User> userList = [];
-    for (var entry in states.entries)
-      if (entry.value.type == EventTypes.RoomMember)
-        userList.add(entry.value.asUser);
+    if (states["m.room.member"] is Map<String, dynamic>) {
+      print('Check members: ${states["m.room.member"].length}');
+      for (var entry in states["m.room.member"].entries) {
+        RoomState state = entry.value;
+        if (state.type == EventTypes.RoomMember) userList.add(state.asUser);
+      }
+    }
     return userList;
   }
 

lib/src/RoomList.dart

@@ -130,7 +130,6 @@ class RoomList {
         mHeroes: chatUpdate.summary?.mHeroes,
         mJoinedMemberCount: chatUpdate.summary?.mJoinedMemberCount,
         mInvitedMemberCount: chatUpdate.summary?.mInvitedMemberCount,
-        states: {},
         roomAccountData: {},
         client: client,
       );

lib/src/utils/StatesMap.dart

@@ -0,0 +1,36 @@
+import 'package:famedlysdk/famedlysdk.dart';
+
+/// Matrix room states are addressed by a tuple of the [type] and an
+/// optional [stateKey].
+class StatesMap {
+  Map<String, Map<String, RoomState>> states = {};
+
+  /// Returns either the [RoomState] or a map of state_keys to [RoomState] objects.
+  /// If you just enter a MatrixID, it will try to return the corresponding m.room.member event.
+  dynamic operator [](String key) {
+    if (key.startsWith("@") && key.contains(":")) {
+      if (!states.containsKey("m.room.member")) states["m.room.member"] = {};
+      return states["m.room.member"][key];
+    }
+    if (!states.containsKey(key)) states[key] = {};
+    if (states[key][""] is RoomState)
+      return states[key][""];
+    else if (states[key].length == 0)
+      return null;
+    else
+      return states[key];
+  }
+
+  void operator []=(String key, RoomState val) {
+    if (key.startsWith("@") && key.contains(":")) {
+      if (!states.containsKey("m.room.member")) states["m.room.member"] = {};
+      states["m.room.member"][key] = val;
+    }
+    if (!states.containsKey(key)) states[key] = {};
+    states[key][val.stateKey ?? ""] = val;
+  }
+
+  bool containsKey(String key) => states.containsKey(key);
+
+  void forEach(f) => states.forEach(f);
+}

test/StatesMap_test.dart

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2019 Zender & Kurtz GbR.
+ *
+ * Authors:
+ *   Christian Pauly <krille@famedly.com>
+ *   Marcel Radzio <mtrnord@famedly.com>
+ *
+ * This file is part of famedlysdk.
+ *
+ * famedlysdk is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * famedlysdk is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with famedlysdk.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:test/test.dart';
+import 'package:famedlysdk/src/utils/StatesMap.dart';
+
+void main() {
+  /// All Tests related to the ChatTime
+  group("StateKeys", () {
+    test("Operator overload", () async {
+      StatesMap states = StatesMap();
+      states["m.room.name"] = RoomState(
+          eventId: "1",
+          content: {"name": "test"},
+          typeKey: "m.room.name",
+          stateKey: "",
+          roomId: "!test:test.test",
+          senderId: "@alice:test.test");
+
+      states["@alice:test.test"] = RoomState(
+          eventId: "2",
+          content: {"membership": "join"},
+          typeKey: "m.room.name",
+          stateKey: "@alice:test.test",
+          roomId: "!test:test.test",
+          senderId: "@alice:test.test");
+
+      states["m.room.member"]["@bob:test.test"] = RoomState(
+          eventId: "3",
+          content: {"membership": "join"},
+          typeKey: "m.room.name",
+          stateKey: "@bob:test.test",
+          roomId: "!test:test.test",
+          senderId: "@bob:test.test");
+
+      states["com.test.custom"] = RoomState(
+          eventId: "4",
+          content: {"custom": "stuff"},
+          typeKey: "com.test.custom",
+          stateKey: "customStateKey",
+          roomId: "!test:test.test",
+          senderId: "@bob:test.test");
+
+      expect(states["m.room.name"].eventId, "1");
+      expect(states["@alice:test.test"].eventId, "2");
+      expect(states["m.room.member"]["@alice:test.test"].eventId, "2");
+      expect(states["@bob:test.test"].eventId, "3");
+      expect(states["m.room.member"]["@bob:test.test"].eventId, "3");
+      expect(states["m.room.member"].length, 2);
+      expect(states["com.test.custom"]["customStateKey"].eventId, "4");
+    });
+  });
+}

test/Timeline_test.dart

@@ -43,11 +43,7 @@ void main() {
     client.homeserver = "https://fakeServer.notExisting";
 
     Room room = Room(
-        id: roomID,
-        client: client,
-        prev_batch: "1234",
-        states: {},
-        roomAccountData: {});
+        id: roomID, client: client, prev_batch: "1234", roomAccountData: {});
     Timeline timeline = Timeline(
         room: room,
         events: [],