rework logic in PinnedEventsController, make

`SetStateEvent.content` a `Content`

lib/controllers/pinned_events_controller.dart

@@ -42,53 +42,46 @@ class PinnedEventsController extends AsyncNotifier<IList<Event>> {
   }
 
   Future<void> addPin(Event event) async {
-    final client = ref.read(ClientController.provider.notifier);
     final current = await future;
 
-    if (current.any((ev) => ev.eventId == event.eventId)) {
-      return;
-    }
-
-    final updatedPinnedIds = [
-      ...current.map((ev) => ev.eventId),
-      event.eventId,
-    ];
-
-    await client.setState(
+    return setPinned(
       .new(
-        roomId: roomId,
-        type: EventType.pinnedEvents.type,
-        stateKey:
-            "", //The empty string stands for m.room.pinned_events according to matrix spec.
-        content: {"pinned": updatedPinnedIds},
+        pinnedEvents: .new(
+          current
+              .map((element) => element.eventId)
+              .toIList()
+              .add(event.eventId),
+        ),
       ),
     );
   }
 
   Future<void> removePin(Event event) async {
-    final client = ref.read(ClientController.provider.notifier);
     final current = await future;
 
-    if (!current.any((ev) => ev.eventId == event.eventId)) {
-      return;
-    }
-
-    final updatedPinnedIds = [
-      ...current
-          .where((ev) => ev.eventId != event.eventId)
-          .map((ev) => ev.eventId),
-    ];
-
-    await client.setState(
+    return setPinned(
       .new(
-        roomId: roomId,
-        type: EventType.pinnedEvents.type,
-        stateKey: "", //The empty string stands for m.room.pinned_events according to matrix spec.
-        content: {"pinned": updatedPinnedIds},
+        pinnedEvents: .new(
+          current
+              .map((element) => element.eventId)
+              .toIList()
+              .remove(event.eventId),
+        ),
       ),
     );
   }
 
+  Future<void> setPinned(PinnedEventsContent content) => ref
+      .read(ClientController.provider.notifier)
+      .setState(
+        .new(
+          roomId: roomId,
+          type: EventType.pinnedEvents.type,
+          stateKey: "",
+          content: content,
+        ),
+      );
+
   static final provider = AsyncNotifierProvider.family
       .autoDispose<PinnedEventsController, IList<Event>, String>(
         PinnedEventsController.new,

lib/models/requests/set_state_request.dart

@@ -1,4 +1,5 @@
 import "package:freezed_annotation/freezed_annotation.dart";
+import "package:nexus/models/content/content.dart";
 part "set_state_request.freezed.dart";
 part "set_state_request.g.dart";
 
@@ -8,10 +9,10 @@ abstract class SetStateRequest with _$SetStateRequest {
     required String roomId,
     required String type,
     required String stateKey,
-    required Map<String, dynamic> content,
+    required Content content,
     @Default(0) int delayMs,
   }) = _SetStateRequest;
 
   factory SetStateRequest.fromJson(Map<String, Object?> json) =>
       _$SetStateRequestFromJson(json);
-}
+}