// 功能描述：验证工作人员会话失效的幂等清理、旧请求隔离和存储异常降级。
// 版本：1.0.0
import 'package:flutter_test/flutter_test.dart';
import 'package:service_app/app/dependencies.dart';
import 'package:service_app/data/services/secure_session_store.dart';

/// 提供可观测的内存会话存储，避免测试依赖真实平台插件。
class _MemorySessionStore implements SessionStore {
  _MemorySessionStore({Map<String, String>? values, this.deleteError}) : values = {...?values};

  final Map<String, String> values;
  final Object? deleteError;
  final Map<String, int> deleteCounts = {};

  @override
  Future<void> delete(String key) async {
    deleteCounts[key] = (deleteCounts[key] ?? 0) + 1;
    if (deleteError != null) throw deleteError!;
    values.remove(key);
  }

  @override
  Future<String?> read(String key) async => values[key];

  @override
  Future<void> write(String key, String value) async {
    values[key] = value;
  }
}

/// 覆盖并发 401、迟到旧请求、设备标识保留和安全存储删除失败。
void main() {
  const tokenKey = 'service_app_access_token';
  const identityKey = 'service_app_identity';
  const roleKey = 'service_app_role';
  const deviceKey = 'service_app_device';

  test('同一失效令牌只清理并通知一次且保留设备标识', () async {
    final store = _MemorySessionStore(
      values: const {
        tokenKey: 'JWT expired-token',
        identityKey: 'staff-1',
        roleKey: 'delivery',
        deviceKey: 'device-1',
      },
    );
    final session = StaffSession(store);
    await session.restore();
    var notificationCount = 0;
    session.addListener(() => notificationCount++);

    session.invalidate('JWT expired-token');
    session.invalidate('JWT expired-token');
    await Future<void>.delayed(Duration.zero);

    expect(session.token, isEmpty);
    expect(session.identity, isEmpty);
    expect(session.roleCode, isEmpty);
    expect(session.deviceIdentity, 'device-1');
    expect(session.hasExpired, isTrue);
    expect(store.deleteCounts[tokenKey], 1);
    expect(store.deleteCounts[identityKey], 1);
    expect(store.deleteCounts[roleKey], 1);
    expect(store.deleteCounts[deviceKey], isNull);
    expect(store.values[deviceKey], 'device-1');
    expect(notificationCount, 1);
  });

  test('迟到的旧请求不得使当前会话失效', () async {
    final store = _MemorySessionStore(
      values: const {
        tokenKey: 'JWT current-token',
        identityKey: 'staff-1',
        roleKey: 'installer',
        deviceKey: 'device-1',
      },
    );
    final session = StaffSession(store);
    await session.restore();

    session.invalidate('JWT old-token');
    await Future<void>.delayed(Duration.zero);

    expect(session.token, 'JWT current-token');
    expect(session.identity, 'staff-1');
    expect(session.roleCode, 'installer');
    expect(session.hasExpired, isFalse);
    expect(store.deleteCounts, isEmpty);
  });

  test('持久化删除失败也立即清空内存会话并保留设备标识', () async {
    final store = _MemorySessionStore(
      values: const {
        tokenKey: 'JWT expired-token',
        identityKey: 'staff-1',
        roleKey: 'operations',
        deviceKey: 'device-1',
      },
      deleteError: StateError('storage unavailable'),
    );
    final session = StaffSession(store);
    await session.restore();

    session.invalidate('JWT expired-token');
    await Future<void>.delayed(Duration.zero);

    expect(session.token, isEmpty);
    expect(session.identity, isEmpty);
    expect(session.roleCode, isEmpty);
    expect(session.deviceIdentity, 'device-1');
    expect(session.hasExpired, isTrue);
    expect(store.deleteCounts.keys, containsAll([tokenKey, identityKey, roleKey]));
    expect(store.deleteCounts[deviceKey], isNull);
  });
}