/**
 * 登录业务服务测试
 */

import { Test, TestingModule } from '@nestjs/testing';
import { LoginService } from './login.service';
import { LoginCoreService } from '../../core/login_core/login_core.service';

describe('LoginService', () => {
  let service: LoginService;
  let loginCoreService: jest.Mocked<LoginCoreService>;

  const mockUser = {
    id: BigInt(1),
    username: 'testuser',
    email: 'test@example.com',
    phone: '+8613800138000',
    password_hash: '$2b$12$hashedpassword',
    nickname: '测试用户',
    github_id: null as string | null,
    avatar_url: null as string | null,
    role: 1,
    created_at: new Date(),
    updated_at: new Date()
  };

  beforeEach(async () => {
    const mockLoginCoreService = {
      login: jest.fn(),
      register: jest.fn(),
      githubOAuth: jest.fn(),
      sendPasswordResetCode: jest.fn(),
      resetPassword: jest.fn(),
      changePassword: jest.fn(),
    };

    const module: TestingModule = await Test.createTestingModule({
      providers: [
        LoginService,
        {
          provide: LoginCoreService,
          useValue: mockLoginCoreService,
        },
      ],
    }).compile();

    service = module.get<LoginService>(LoginService);
    loginCoreService = module.get(LoginCoreService);
  });

  it('should be defined', () => {
    expect(service).toBeDefined();
  });

  describe('login', () => {
    it('should return success response for valid login', async () => {
      loginCoreService.login.mockResolvedValue({
        user: mockUser,
        isNewUser: false
      });

      const result = await service.login({
        identifier: 'testuser',
        password: 'password123'
      });

      expect(result.success).toBe(true);
      expect(result.data?.user.username).toBe('testuser');
      expect(result.data?.access_token).toBeDefined();
    });

    it('should return error response for failed login', async () => {
      loginCoreService.login.mockRejectedValue(new Error('登录失败'));

      const result = await service.login({
        identifier: 'testuser',
        password: 'wrongpassword'
      });

      expect(result.success).toBe(false);
      expect(result.message).toBe('登录失败');
      expect(result.error_code).toBe('LOGIN_FAILED');
    });
  });

  describe('register', () => {
    it('should return success response for valid registration', async () => {
      loginCoreService.register.mockResolvedValue({
        user: mockUser,
        isNewUser: true
      });

      const result = await service.register({
        username: 'testuser',
        password: 'password123',
        nickname: '测试用户'
      });

      expect(result.success).toBe(true);
      expect(result.data?.user.username).toBe('testuser');
      expect(result.data?.is_new_user).toBe(true);
    });

    it('should return error response for failed registration', async () => {
      loginCoreService.register.mockRejectedValue(new Error('用户名已存在'));

      const result = await service.register({
        username: 'existinguser',
        password: 'password123',
        nickname: '测试用户'
      });

      expect(result.success).toBe(false);
      expect(result.message).toBe('用户名已存在');
      expect(result.error_code).toBe('REGISTER_FAILED');
    });
  });

  describe('githubOAuth', () => {
    it('should return success response for GitHub OAuth', async () => {
      loginCoreService.githubOAuth.mockResolvedValue({
        user: mockUser,
        isNewUser: true
      });

      const result = await service.githubOAuth({
        github_id: 'github123',
        username: 'githubuser',
        nickname: 'GitHub用户'
      });

      expect(result.success).toBe(true);
      expect(result.data?.user.username).toBe('testuser');
      expect(result.data?.is_new_user).toBe(true);
    });
  });

  describe('sendPasswordResetCode', () => {
    it('should return success response with verification code', async () => {
      loginCoreService.sendPasswordResetCode.mockResolvedValue('123456');

      const result = await service.sendPasswordResetCode('test@example.com');

      expect(result.success).toBe(true);
      expect(result.data?.verification_code).toBe('123456');
    });
  });

  describe('resetPassword', () => {
    it('should return success response for password reset', async () => {
      loginCoreService.resetPassword.mockResolvedValue(mockUser);

      const result = await service.resetPassword({
        identifier: 'test@example.com',
        verificationCode: '123456',
        newPassword: 'newpassword123'
      });

      expect(result.success).toBe(true);
      expect(result.message).toBe('密码重置成功');
    });
  });

  describe('changePassword', () => {
    it('should return success response for password change', async () => {
      loginCoreService.changePassword.mockResolvedValue(mockUser);

      const result = await service.changePassword(BigInt(1), 'oldpassword', 'newpassword123');

      expect(result.success).toBe(true);
      expect(result.message).toBe('密码修改成功');
    });
  });
});