loading spaces

lib/controllers/spaces_controller.dart

@@ -0,0 +1,36 @@
+import "package:flutter/widgets.dart";
+import "package:matrix/matrix.dart";
+import "package:flutter_riverpod/flutter_riverpod.dart";
+import "package:nexus/controllers/client_controller.dart";
+import "package:nexus/models/space.dart";
+
+class SpacesController extends AsyncNotifier<List<Space>> {
+  @override
+  Future<List<Space>> build() async {
+    final client = await ref.watch(ClientController.provider.future);
+
+    return Future.wait(
+      client.rooms.where((room) => room.isSpace).map((data) async {
+        final thumb = await data.avatar?.getThumbnailUri(
+          client,
+          width: 40,
+          height: 40,
+        );
+        return Space(
+          roomData: data,
+          avatar: thumb == null
+              ? null
+              : Image.network(
+                  thumb.toString(),
+                  width: 40,
+                  headers: {"authorization": "Bearer ${client.accessToken}"},
+                ),
+        );
+      }),
+    );
+  }
+
+  static final provider = AsyncNotifierProvider<SpacesController, List<Space>>(
+    SpacesController.new,
+  );
+}