import { expect, test } from '@playwright/test';

const baseURL = 'http://localhost:3090';

test.describe('User Authentication Flow', () => {
  test.beforeEach(async ({ page }) => {
    // Clear any existing auth state for auth tests
    await page.context().clearCookies();
    await page.context().clearPermissions();
  });

  test('Should display login page with all required elements', async ({ page }) => {
    await page.goto(`${baseURL}/login`);

    // Check page title and main elements
    await expect(page).toHaveTitle(/LibreChat/);

    // Check if we're redirected or if login page is shown
    const currentUrl = page.url();
    if (currentUrl.includes('/login')) {
      await expect(page.getByText('Welcome back')).toBeVisible();

      // Check form elements
      await expect(page.getByLabel('Email')).toBeVisible();
      await expect(page.getByLabel('Password')).toBeVisible();
      await expect(page.getByRole('button', { name: 'Continue' })).toBeVisible();

      // Check navigation links
      await expect(page.getByText('Sign up')).toBeVisible();
    } else {
      // User might already be authenticated, which is also valid
      console.log('User appears to be already authenticated');
    }
  });

  test('Should display registration page with all required elements', async ({ page }) => {
    await page.goto(`${baseURL}/register`);

    // Check page title and main elements
    await expect(page).toHaveTitle(/LibreChat/);

    const currentUrl = page.url();
    if (currentUrl.includes('/register')) {
      // Wait for the main heading to appear first, which indicates the page has loaded
      await expect(page.getByText('Create your account')).toBeVisible({ timeout: 15000 });

      // Wait for the form to be fully rendered by checking for email field first
      await expect(page.getByLabel('Email')).toBeVisible({ timeout: 10000 });

      // Check form elements
      await expect(page.getByLabel('Full name')).toBeVisible();
      await expect(page.getByLabel('Username (optional)')).toBeVisible();
      await expect(page.getByTestId('password')).toBeVisible();
      await expect(page.getByTestId('confirm_password')).toBeVisible();

      // Wait for the Submit registration button to be visible (using correct accessible name)
      await expect(page.getByRole('button', { name: 'Submit registration' })).toBeVisible({
        timeout: 10000,
      });

      // Check navigation link
      await expect(page.getByText('Login')).toBeVisible();
    } else {
      console.log('User appears to be already authenticated');
    }
  });

  test('Should validate registration form inputs', async ({ page }) => {
    await page.goto(`${baseURL}/register`);

    const currentUrl = page.url();
    if (!currentUrl.includes('/register')) {
      test.skip();
      return;
    }

    // Wait for the form to be fully loaded before trying to interact
    await expect(page.getByRole('button', { name: 'Submit registration' })).toBeVisible({
      timeout: 10000,
    });

    // Try to submit empty form
    await page.getByRole('button', { name: 'Submit registration' }).click();

    // Check for validation errors (may appear after attempting to submit)
    const errorChecks = [
      page.getByText('Name is required'),
      page.getByText('Email is required'),
      page.getByText('Password is required'),
    ];

    // Wait for at least one validation error to appear
    let errorFound = false;
    for (const errorCheck of errorChecks) {
      try {
        await expect(errorCheck).toBeVisible({ timeout: 2000 });
        errorFound = true;
        break;
      } catch {
        // Continue checking other errors
      }
    }

    if (!errorFound) {
      console.log('No validation errors found - form might have different validation behavior');
    }
  });

  test('Should validate login form inputs', async ({ page }) => {
    await page.goto(`${baseURL}/login`);

    const currentUrl = page.url();
    if (!currentUrl.includes('/login')) {
      test.skip();
      return;
    }

    // Try to submit empty form
    await page.getByRole('button', { name: 'Continue' }).click();

    // Check for validation errors with more flexible timeout
    try {
      await expect(page.getByText('Email is required')).toBeVisible({ timeout: 3000 });
    } catch {
      console.log('Email validation message not found or different text');
    }

    try {
      await expect(page.getByText('Password is required')).toBeVisible({ timeout: 3000 });
    } catch {
      console.log('Password validation message not found or different text');
    }
  });

  test('Should allow navigation between auth pages', async ({ page }) => {
    // Start at login
    await page.goto(`${baseURL}/login`);

    const loginUrl = page.url();
    if (!loginUrl.includes('/login')) {
      test.skip();
      return;
    }

    // Navigate to register
    await page.getByText('Sign up').click();
    await expect(page).toHaveURL(`${baseURL}/register`);

    // Navigate back to login
    await page.getByText('Login').click();
    await expect(page).toHaveURL(`${baseURL}/login`);
  });

  test('Should redirect to home when accessing auth pages while authenticated', async ({
    page,
  }) => {
    // This test checks if authenticated users are redirected from auth pages
    try {
      await page.goto(`${baseURL}/c/new`);
      const isAuthenticated = await page
        .locator('[data-testid="nav-user"]')
        .isVisible({ timeout: 3000 });

      if (isAuthenticated) {
        // Try to visit login page while authenticated
        await page.goto(`${baseURL}/login`);
        // Should redirect to main app
        await expect(page).toHaveURL(`${baseURL}/c/new`);

        // Try to visit register page while authenticated
        await page.goto(`${baseURL}/register`);
        // Should redirect to main app
        await expect(page).toHaveURL(`${baseURL}/c/new`);
      } else {
        test.skip();
      }
    } catch (error) {
      test.skip();
    }
  });
});