import { OpenAPIHono } from '@hono/zod-openapi';
import { createApiClient, ApiClient } from './api-client';
import { IntegrationTestDatabase } from './integration-test-db';
import { DataSource } from 'typeorm';
import { UserEntity } from '../modules/users/user.entity';
import { Role } from '../modules/users/role.entity';
import apiApp from '../api';

/**
 * 集成测试配置选项
 */
export interface IntegrationTestOptions {
  setupDatabase?: boolean;
  setupAuth?: boolean;
  setupMiddlewares?: boolean;
}

/**
 * 集成测试上下文
 */
export interface IntegrationTestContext {
  app: OpenAPIHono;
  client: ApiClient;
  dataSource: DataSource | null;
}

/**
 * 创建集成测试应用实例
 */
export async function createIntegrationTestApp(
  routes: any[],
  options: IntegrationTestOptions = {}
): Promise<OpenAPIHono> {
  // 使用主API应用
  return apiApp;
}

/**
 * 创建集成测试客户端
 */
export function createIntegrationTestClient(
  app: OpenAPIHono,
  options: IntegrationTestOptions = {}
): ApiClient {
  const client = createApiClient(app, {
    baseURL: 'http://localhost:3000/api/v1'
  });

  // 设置默认认证头（如果需要）
  if (options.setupAuth !== false) {
    client.setAuthToken('test-integration-token');
  }

  return client;
}

/**
 * 设置集成测试环境
 */
export async function setupIntegrationTestEnvironment(
  routes: any[],
  options: IntegrationTestOptions = {}
): Promise<IntegrationTestContext> {
  const {
    setupDatabase = true,
    setupAuth = true,
    setupMiddlewares = true
  } = options;

  // 创建测试应用
  const app = await createIntegrationTestApp(routes, options);

  // 初始化数据库（如果需要）
  let dataSource: DataSource | null = null;
  if (setupDatabase) {
    dataSource = await IntegrationTestDatabase.initialize();
  }

  // 创建API客户端
  const client = createIntegrationTestClient(app, { setupAuth });

  return {
    app,
    client,
    dataSource
  };
}

/**
 * 清理集成测试环境
 */
export async function cleanupIntegrationTestEnvironment(): Promise<void> {
  await IntegrationTestDatabase.clearAllData();
  await IntegrationTestDatabase.cleanup();
}

/**
 * 测试数据工厂函数
 */
export class TestDataFactory {
  /**
   * 创建测试用户
   */
  static async createTestUser(userData: Partial<UserEntity> = {}): Promise<UserEntity> {
    const dataSource = IntegrationTestDatabase.getDataSource();
    if (!dataSource) {
      throw new Error('Database not initialized');
    }

    const userRepository = dataSource.getRepository(UserEntity);

    const defaultUser: Partial<UserEntity> = {
      username: `testuser_${Date.now()}`,
      email: `test${Date.now()}@example.com`,
      password: 'testpassword123',
      firstName: 'Test',
      lastName: 'User',
      isActive: true,
      ...userData
    };

    const user = userRepository.create(defaultUser);
    return await userRepository.save(user);
  }

  /**
   * 创建测试管理员用户
   */
  static async createTestAdmin(userData: Partial<UserEntity> = {}): Promise<UserEntity> {
    const dataSource = IntegrationTestDatabase.getDataSource();
    if (!dataSource) {
      throw new Error('Database not initialized');
    }

    const userRepository = dataSource.getRepository(UserEntity);
    const roleRepository = dataSource.getRepository(Role);

    // 确保管理员角色存在
    let adminRole = await roleRepository.findOne({ where: { name: 'admin' } });
    if (!adminRole) {
      adminRole = roleRepository.create({ name: 'admin', description: 'Administrator' });
      adminRole = await roleRepository.save(adminRole);
    }

    const defaultUser: Partial<UserEntity> = {
      username: `admin_${Date.now()}`,
      email: `admin${Date.now()}@example.com`,
      password: 'adminpassword123',
      firstName: 'Admin',
      lastName: 'User',
      isActive: true,
      roles: [adminRole],
      ...userData
    };

    const user = userRepository.create(defaultUser);
    return await userRepository.save(user);
  }

  /**
   * 创建测试角色
   */
  static async createTestRole(roleData: Partial<Role> = {}): Promise<Role> {
    const dataSource = IntegrationTestDatabase.getDataSource();
    if (!dataSource) {
      throw new Error('Database not initialized');
    }

    const roleRepository = dataSource.getRepository(Role);

    const defaultRole: Partial<Role> = {
      name: `role_${Date.now()}`,
      description: 'Test Role',
      ...roleData
    };

    const role = roleRepository.create(defaultRole);
    return await roleRepository.save(role);
  }

  /**
   * 清空所有测试数据
   */
  static async clearAllTestData(): Promise<void> {
    await IntegrationTestDatabase.clearAllData();
  }
}

/**
 * 集成测试断言工具
 */
export class IntegrationTestAssertions {
  /**
   * 断言响应状态码
   */
  static expectStatus(response: any, expectedStatus: number): void {
    if (response.status !== expectedStatus) {
      throw new Error(`Expected status ${expectedStatus}, but got ${response.status}. Response: ${JSON.stringify(response.data)}`);
    }
  }

  /**
   * 断言响应包含特定字段
   */
  static expectResponseToHave(response: any, expectedFields: Record<string, any>): void {
    for (const [key, value] of Object.entries(expectedFields)) {
      if ((response.data as any)[key] !== value) {
        throw new Error(`Expected field ${key} to be ${value}, but got ${(response.data as any)[key]}`);
      }
    }
  }

  /**
   * 断言响应包含特定结构
   */
  static expectResponseStructure(response: any, structure: Record<string, any>): void {
    for (const key of Object.keys(structure)) {
      if (!(key in response.data)) {
        throw new Error(`Expected response to have key: ${key}`);
      }
    }
  }

  /**
   * 断言用户存在于数据库中
   */
  static async expectUserToExist(username: string): Promise<void> {
    const dataSource = IntegrationTestDatabase.getDataSource();
    if (!dataSource) {
      throw new Error('Database not initialized');
    }

    const userRepository = dataSource.getRepository(UserEntity);
    const user = await userRepository.findOne({ where: { username } });

    if (!user) {
      throw new Error(`Expected user ${username} to exist in database`);
    }
  }

  /**
   * 断言用户不存在于数据库中
   */
  static async expectUserNotToExist(username: string): Promise<void> {
    const dataSource = IntegrationTestDatabase.getDataSource();
    if (!dataSource) {
      throw new Error('Database not initialized');
    }

    const userRepository = dataSource.getRepository(UserEntity);
    const user = await userRepository.findOne({ where: { username } });

    if (user) {
      throw new Error(`Expected user ${username} not to exist in database`);
    }
  }
}

/**
 * 集成测试生命周期钩子
 */
export function setupIntegrationTestHooks() {
  beforeEach(async () => {
    await IntegrationTestDatabase.initialize();
  });

  afterEach(async () => {
    await IntegrationTestDatabase.clearAllData();
  });

  afterAll(async () => {
    await IntegrationTestDatabase.cleanup();
  });
}