Initial commit

lib/providers/session_provider.dart

@@ -0,0 +1,64 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../core/contracts/auth.dart';
+import 'di_providers.dart';
+import 'server_provider.dart';
+
+class SessionNotifier extends AsyncNotifier<SessionListRes> {
+  @override
+  Future<SessionListRes> build() async {
+    final usecase = await ref.watch(listSessionsUseCaseProvider.future);
+    return usecase.execute();
+  }
+
+  Future<void> refresh() async {
+    state = await AsyncValue.guard(() async {
+      final usecase = await ref.read(listSessionsUseCaseProvider.future);
+      return usecase.execute();
+    });
+  }
+
+  Future<void> login({
+    required String serverId,
+    required String username,
+    required String password,
+  }) async {
+    final usecase = await ref.read(authByNameUseCaseProvider.future);
+    await usecase.execute(
+      AuthByNameReq(serverId: serverId, username: username, password: password),
+    );
+    await refresh();
+    ref.invalidate(serverListProvider);
+  }
+
+  Future<void> logout({String? serverId}) async {
+    final usecase = await ref.read(logoutUseCaseProvider.future);
+    await usecase.execute(serverId);
+    await refresh();
+  }
+
+  Future<void> switchSession(String serverId) async {
+    final usecase = await ref.read(switchSessionUseCaseProvider.future);
+    await usecase.execute(serverId);
+    await refresh();
+  }
+}
+
+final sessionProvider = AsyncNotifierProvider<SessionNotifier, SessionListRes>(
+  SessionNotifier.new,
+);
+
+
+final activeSessionProvider = Provider<AuthedSession?>((ref) {
+  final state = ref.watch(sessionProvider);
+  return state.maybeWhen(
+    data: (data) {
+      if (data.activeServerId == null) return null;
+      for (final s in data.sessions) {
+        if (s.isActive) return s;
+      }
+      return null;
+    },
+    orElse: () => null,
+  );
+});