// Simplified test for authController functionality

// Simple mock implementations
const mockJwt = {
  sign: jest.fn(),
};

const mockUser = {
  findUserByUsername: jest.fn(),
  verifyPassword: jest.fn(),
  createUser: jest.fn(),
};

// Mock the login function logic
const loginLogic = async (username: string, password: string) => {
  const user = mockUser.findUserByUsername(username);
  
  if (!user) {
    return { success: false, message: 'Invalid credentials' };
  }

  const isPasswordValid = await mockUser.verifyPassword(password, user.password);
  
  if (!isPasswordValid) {
    return { success: false, message: 'Invalid credentials' };
  }

  return new Promise((resolve, reject) => {
    mockJwt.sign(
      { user: { username: user.username, isAdmin: user.isAdmin } },
      'secret',
      { expiresIn: '24h' },
      (err: any, token: string) => {
        if (err) reject(err);
        resolve({ 
          success: true, 
          token,
          user: {
            username: user.username,
            isAdmin: user.isAdmin
          }
        });
      }
    );
  });
};

describe('Auth Logic Tests', () => {
  beforeEach(() => {
    jest.clearAllMocks();
  });

  describe('Login Logic', () => {
    it('should return success for valid credentials', async () => {
      const mockUserData = {
        username: 'testuser',
        password: 'hashedPassword',
        isAdmin: false,
      };

      const mockToken = 'mock-jwt-token';

      // Setup mocks
      mockUser.findUserByUsername.mockReturnValue(mockUserData);
      mockUser.verifyPassword.mockResolvedValue(true);
      mockJwt.sign.mockImplementation((payload, secret, options, callback) => {
        callback(null, mockToken);
      });

      const result = await loginLogic('testuser', 'password123');

      expect(result).toEqual({
        success: true,
        token: mockToken,
        user: {
          username: 'testuser',
          isAdmin: false,
        },
      });

      expect(mockUser.findUserByUsername).toHaveBeenCalledWith('testuser');
      expect(mockUser.verifyPassword).toHaveBeenCalledWith('password123', 'hashedPassword');
    });

    it('should return error for non-existent user', async () => {
      mockUser.findUserByUsername.mockReturnValue(undefined);

      const result = await loginLogic('nonexistent', 'password123');

      expect(result).toEqual({
        success: false,
        message: 'Invalid credentials',
      });

      expect(mockUser.findUserByUsername).toHaveBeenCalledWith('nonexistent');
      expect(mockUser.verifyPassword).not.toHaveBeenCalled();
    });

    it('should return error for invalid password', async () => {
      const mockUserData = {
        username: 'testuser',
        password: 'hashedPassword',
        isAdmin: false,
      };

      mockUser.findUserByUsername.mockReturnValue(mockUserData);
      mockUser.verifyPassword.mockResolvedValue(false);

      const result = await loginLogic('testuser', 'wrongpassword');

      expect(result).toEqual({
        success: false,
        message: 'Invalid credentials',
      });

      expect(mockUser.verifyPassword).toHaveBeenCalledWith('wrongpassword', 'hashedPassword');
    });
  });

  describe('Utility Functions', () => {
    it('should validate user data structure', () => {
      const validUser = {
        username: 'testuser',
        password: 'password123',
        isAdmin: false,
      };

      expect(validUser).toHaveProperty('username');
      expect(validUser).toHaveProperty('password');
      expect(validUser).toHaveProperty('isAdmin');
      expect(typeof validUser.username).toBe('string');
      expect(typeof validUser.password).toBe('string');
      expect(typeof validUser.isAdmin).toBe('boolean');
    });

    it('should generate proper JWT payload structure', () => {
      const user = {
        username: 'testuser',
        isAdmin: true,
      };

      const payload = {
        user: {
          username: user.username,
          isAdmin: user.isAdmin,
        },
      };

      expect(payload).toHaveProperty('user');
      expect(payload.user).toHaveProperty('username', 'testuser');
      expect(payload.user).toHaveProperty('isAdmin', true);
    });
  });
});
