const RegistrationPage = require('../pages/RegistrationPage');
const LoginPage = require('../pages/LoginPage');
const DashboardPage = require('../pages/DashboardPage');
const users = require('../fixtures/users.json');

describe('Authentication E2E Tests', () => {
  let driver;
  let registrationPage;
  let loginPage;
  let dashboardPage;

  beforeAll(async () => {
    driver = await global.createDriver();
    registrationPage = new RegistrationPage(driver);
    loginPage = new LoginPage(driver);
    dashboardPage = new DashboardPage(driver);
  });

  afterAll(async () => {
    await global.quitDriver(driver);
  });

  beforeEach(async () => {
    // Navigate to home page before each test to ensure clean state
    await driver.get(global.testConfig.baseUrl);
  });

  describe('User Registration', () => {
    test('should successfully register a new user', async () => {
      const testUser = users.registrationTestUser;

      await registrationPage.navigateToRegistration();

      expect(await registrationPage.isRegistrationFormDisplayed()).toBe(true);
      expect(await registrationPage.getRegistrationHeading()).toBe('Register');

      await registrationPage.register(
        testUser.name,
        testUser.email,
        testUser.password
      );

      await registrationPage.waitForSuccessfulRegistration();

      const successMessage = await registrationPage.getSuccessMessage();
      expect(successMessage).toContain('Registration successful');
      expect(await registrationPage.isFormCleared()).toBe(true);
    });

    test('should show validation errors for invalid registration data', async () => {
      const invalidUser = users.invalidUsers.shortPassword;

      await registrationPage.navigateToRegistration();
      await registrationPage.register(
        invalidUser.name,
        invalidUser.email,
        invalidUser.password
      );

      await registrationPage.waitForRegistrationError();

      // Check that form shows validation errors
      const hasErrors = await registrationPage.hasPasswordFieldError() ||
                       await registrationPage.getPasswordErrorMessage() !== null ||
                       await registrationPage.getGeneralErrorMessage() !== null;

      expect(hasErrors).toBe(true);
    });

    test('should show error for password mismatch', async () => {
      const mismatchUser = users.invalidUsers.passwordMismatch;

      await registrationPage.navigateToRegistration();
      await registrationPage.register(
        mismatchUser.name,
        mismatchUser.email,
        mismatchUser.password,
        mismatchUser.passwordConfirmation
      );

      await registrationPage.waitForRegistrationError();

      const hasPasswordConfirmationError = await registrationPage.hasPasswordConfirmationFieldError() ||
                                          await registrationPage.getPasswordConfirmationErrorMessage() !== null;

      expect(hasPasswordConfirmationError).toBe(true);
    });

    test('should show error for empty required fields', async () => {
      await registrationPage.navigateToRegistration();
      await registrationPage.clickSubmit();

      // The form should prevent submission with empty required fields
      // or show validation errors
      const submitButtonText = await registrationPage.getSubmitButtonText();
      expect(submitButtonText).toBe('Register'); // Button text shouldn't change to "Registering..."
    });

    test('should show error for invalid email format', async () => {
      const invalidEmailUser = users.invalidUsers.invalidEmail;

      await registrationPage.navigateToRegistration();
      await registrationPage.register(
        invalidEmailUser.name,
        invalidEmailUser.email,
        invalidEmailUser.password
      );

      // The HTML5 email validation should prevent form submission
      // or backend should return validation error
      const currentUrl = await registrationPage.getCurrentUrl();
      expect(currentUrl).toContain('/register');
    });
  });

  describe('User Login', () => {
    test('should successfully login with valid credentials', async () => {
      const validCredentials = users.loginTestCases.validCredentials;

      await loginPage.navigateToLogin();

      expect(await loginPage.isLoginFormDisplayed()).toBe(true);
      expect(await loginPage.getLoginHeading()).toBe('Login');

      await loginPage.login(
        validCredentials.email,
        validCredentials.password
      );

      await loginPage.waitForSuccessfulLogin();

      // Should see dashboard after successful login
      const dashboardVisible = await dashboardPage.isDashboardDisplayed();
      expect(dashboardVisible).toBe(true);
    });

    test('should show error for invalid credentials', async () => {
      const invalidCredentials = users.loginTestCases.invalidCredentials;

      await loginPage.navigateToLogin();
      await loginPage.login(
        invalidCredentials.email,
        invalidCredentials.password
      );

      await loginPage.waitForLoginError();

      const generalError = await loginPage.getGeneralErrorMessage();
      expect(generalError).toContain('Invalid email or password');
    });

    test('should show validation errors for empty fields', async () => {
      await loginPage.navigateToLogin();
      await loginPage.clickSubmit();

      // The form should prevent submission with empty required fields
      const submitButtonText = await loginPage.getSubmitButtonText();
      expect(submitButtonText).toBe('Login'); // Button text shouldn't change to "Logging in..."
    });

    test('should show error for invalid email format', async () => {
      const invalidEmailCredentials = users.loginTestCases.invalidEmailFormat;

      await loginPage.navigateToLogin();
      await loginPage.login(
        invalidEmailCredentials.email,
        invalidEmailCredentials.password
      );

      // The HTML5 email validation should prevent form submission
      // or backend should return validation error
      const currentUrl = await loginPage.getCurrentUrl();
      expect(currentUrl).toContain('/login');
    });

    test('should disable submit button while login is in progress', async () => {
      const validCredentials = users.loginTestCases.validCredentials;

      await loginPage.navigateToLogin();
      await loginPage.enterEmail(validCredentials.email);
      await loginPage.enterPassword(validCredentials.password);

      // Click submit and immediately check if button is disabled
      await loginPage.clickSubmit();

      // Check if button text changes to "Logging in..." (indicating loading state)
      const submitButtonText = await loginPage.getSubmitButtonText();
      const isButtonDisabled = await loginPage.isSubmitButtonDisabled();

      expect(submitButtonText === 'Logging in...' || isButtonDisabled).toBe(true);
    });
  });

  describe('Authentication Flow Integration', () => {
    test('should allow registration followed by immediate login', async () => {
      // Use a unique email for this test to avoid conflicts
      const timestamp = Date.now();
      const testUser = {
        name: 'Integration Test User',
        email: `integration.test.${timestamp}@example.com`,
        password: 'password123'
      };

      // Register new user
      await registrationPage.navigateToRegistration();
      await registrationPage.register(
        testUser.name,
        testUser.email,
        testUser.password
      );

      await registrationPage.waitForSuccessfulRegistration();

      // Navigate to login and use the same credentials
      await loginPage.navigateToLogin();
      await loginPage.login(testUser.email, testUser.password);

      await loginPage.waitForSuccessfulLogin();

      // Should be successfully logged in
      const currentUrl = await loginPage.getCurrentUrl();
      expect(currentUrl).not.toContain('/login');
    });
  });
});