Initial commit

lib/utils/event_checkbox_extension.dart

@@ -0,0 +1,31 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:matrix/matrix.dart';
+
+extension EventCheckboxRoomExtension on Room {
+  static const String relationshipType = 'im.fluffychat.checkboxes';
+  Future<String?> checkCheckbox(
+    String eventId,
+    int checkboxId, {
+    String? txid,
+  }) => sendEvent(
+    {
+      'm.relates_to': {
+        'rel_type': relationshipType,
+        'event_id': eventId,
+        'checkbox_id': checkboxId,
+      },
+    },
+    type: EventTypes.Reaction,
+    txid: txid,
+  );
+}
+
+extension EventCheckboxExtension on Event {
+  int? get checkedCheckboxId => content
+      .tryGetMap<String, Object?>('m.relates_to')
+      ?.tryGet<int>('checkbox_id');
+}