import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:jiu_client/core/auth/auth_state.dart';

void main() {
  setUp(() {
    SharedPreferences.setMockInitialValues({});
  });

  group('AuthNotifier', () {
    late AuthNotifier notifier;

    setUp(() {
      notifier = AuthNotifier();
    });

    test('initial state is not logged in and not initialized', () {
      expect(notifier.state.isLoggedIn, false);
      expect(notifier.state.initialized, false);
    });

    test('restore() sets initialized=true when no stored tokens', () async {
      await notifier.restore();

      expect(notifier.state.initialized, true);
      expect(notifier.state.isLoggedIn, false);
    });

    test('restore() restores user from stored tokens', () async {
      SharedPreferences.setMockInitialValues({
        'access_token': 'test-access-token',
        'refresh_token': 'test-refresh-token',
        'username': 'admin',
        'real_name': '管理员',
        'shop_no': 'S001',
        'shop_id': '1',
      });

      await notifier.restore();

      expect(notifier.state.initialized, true);
      expect(notifier.state.isLoggedIn, true);
      expect(notifier.state.user!.username, 'admin');
      expect(notifier.state.user!.shopNo, 'S001');
      expect(notifier.state.user!.accessToken, 'test-access-token');
    });

    test('login() saves user and updates state', () async {
      const user = AuthUser(
        accessToken: 'at',
        refreshToken: 'rt',
        username: 'admin',
        realName: '管理员',
        shopNo: 'S001',
        shopId: 1,
      );

      await notifier.login(user);

      expect(notifier.state.isLoggedIn, true);
      expect(notifier.state.user!.username, 'admin');

      final prefs = await SharedPreferences.getInstance();
      expect(prefs.getString('access_token'), 'at');
      expect(prefs.getString('refresh_token'), 'rt');
    });

    test('logout() removes auth keys and clears state', () async {
      SharedPreferences.setMockInitialValues({
        'access_token': 'token',
        'refresh_token': 'rt',
        'username': 'admin',
        'login_history_hotels': ['S001'],
      });
      await notifier.restore();
      expect(notifier.state.isLoggedIn, true);

      await notifier.logout();

      expect(notifier.state.isLoggedIn, false);
      final prefs = await SharedPreferences.getInstance();
      expect(prefs.getString('access_token'), null);
      // Login history must NOT be cleared on logout
      expect(prefs.getStringList('login_history_hotels'), ['S001']);
    });

    test('updateAccessToken() updates token without changing other fields',
        () async {
      await notifier.login(const AuthUser(
        accessToken: 'old-token',
        refreshToken: 'rt',
        username: 'admin',
        realName: '管理员',
        shopNo: 'S001',
        shopId: 1,
      ));

      notifier.updateAccessToken('new-token');

      expect(notifier.state.user!.accessToken, 'new-token');
      expect(notifier.state.user!.refreshToken, 'rt');
      expect(notifier.state.user!.username, 'admin');
    });
  });
}