// Comprehensive E2E Test Template - Exhaustive Coverage
// This template generates detailed tests for all possible scenarios

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

// Test Data Factory for comprehensive coverage
class TestDataFactory {
  static validUser = {
    email: 'valid.user@hubtel.com',
    password: 'ValidPassword123!',
    name: 'Valid User',
    phone: '+233123456789'
  };

  static invalidUsers = [
    { email: '', password: '', name: '', error: 'required_fields' },
    { email: 'invalid-email', password: 'weak', name: '', error: 'format_validation' },
    { email: 'test@hubtel.com', password: '123', name: '', error: 'password_strength' },
    { email: 'very.long.email.address.that.exceeds.normal.limits@hubtel.com', password: 'ValidPassword123!', name: 'Very Long Name That Exceeds Character Limits', error: 'length_validation' },
    { email: 'sql@injection.com\'; DROP TABLE users; --', password: 'SqlInjection123!', name: '<script>alert("xss")</script>', error: 'security_validation' }
  ];

  static edgeCaseInputs = [
    { type: 'unicode', value: '测试用户@hubtel.com', expected: 'unicode_support' },
    { type: 'special_chars', value: 'user+tag@hubtel.com', expected: 'email_plus_addressing' },
    { type: 'whitespace', value: '  spaced.user@hubtel.com  ', expected: 'whitespace_handling' },
    { type: 'case_sensitivity', value: 'CaSeSeNsItIvE@HUBTEL.COM', expected: 'case_normalization' }
  ];
}

// Comprehensive Authentication Test Suite
test.describe('Authentication - Complete Coverage', () => {
  let page: Page;

  test.beforeEach(async ({ browser }) => {
    page = await browser.newPage();
    await page.goto('/login');
  });

  // Happy Path Scenarios
  test.describe('Login Success Scenarios', () => {
    test('successful login with valid credentials', async () => {
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.click('[data-testid=login-btn]');
      
      // Verify successful login
      await expect(page).toHaveURL('/dashboard');
      await expect(page.locator('[data-testid=user-profile]')).toBeVisible();
      
      // Verify session storage
      const token = await page.evaluate(() => localStorage.getItem('auth_token'));
      expect(token).toBeTruthy();
    });

    test('login with remember me functionality', async () => {
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.check('[data-testid=remember-me]');
      await page.click('[data-testid=login-btn]');
      
      // Close browser and reopen to test persistence
      await page.close();
      page = await browser.newPage();
      await page.goto('/');
      
      // Should be automatically logged in
      await expect(page).toHaveURL('/dashboard');
    });

    test('login redirects to intended page after authentication', async () => {
      // Try to access protected page
      await page.goto('/protected-page');
      await expect(page).toHaveURL(/.*login.*returnUrl=.*protected-page/);
      
      // Login
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.click('[data-testid=login-btn]');
      
      // Should redirect to originally intended page
      await expect(page).toHaveURL('/protected-page');
    });
  });

  // Comprehensive Failure Scenarios
  test.describe('Login Failure Scenarios', () => {
    TestDataFactory.invalidUsers.forEach((invalidUser, index) => {
      test(`login fails with ${invalidUser.error}`, async () => {
        await page.fill('[data-testid=email]', invalidUser.email);
        await page.fill('[data-testid=password]', invalidUser.password);
        await page.click('[data-testid=login-btn]');
        
        // Verify error handling
        await expect(page.locator('[data-testid=error-message]')).toBeVisible();
        await expect(page).toHaveURL('/login'); // Should stay on login page
        
        // Verify form state preservation for valid fields
        if (invalidUser.email && !invalidUser.email.includes('injection')) {
          await expect(page.locator('[data-testid=email]')).toHaveValue(invalidUser.email);
        }
        
        // Password should be cleared for security
        await expect(page.locator('[data-testid=password]')).toHaveValue('');
      });
    });

    test('account lockout after multiple failed attempts', async () => {
      const maxAttempts = 5;
      
      // Attempt failed logins
      for (let i = 0; i < maxAttempts; i++) {
        await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
        await page.fill('[data-testid=password]', 'wrong-password');
        await page.click('[data-testid=login-btn]');
        
        if (i < maxAttempts - 1) {
          await expect(page.locator('[data-testid=error-message]')).toContainText('Invalid credentials');
        }
      }
      
      // Account should be locked
      await expect(page.locator('[data-testid=error-message]')).toContainText('Account locked');
      await expect(page.locator('[data-testid=login-btn]')).toBeDisabled();
      
      // Even correct credentials should fail
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.click('[data-testid=login-btn]');
      await expect(page.locator('[data-testid=error-message]')).toContainText('Account locked');
    });

    test('concurrent login attempts handling', async () => {
      const secondPage = await browser.newPage();
      await secondPage.goto('/login');
      
      // Start login process on both pages simultaneously
      const loginPromises = [
        page.evaluate(async () => {
          document.querySelector('[data-testid=email]').value = 'valid.user@hubtel.com';
          document.querySelector('[data-testid=password]').value = 'ValidPassword123!';
          document.querySelector('[data-testid=login-btn]').click();
        }),
        secondPage.evaluate(async () => {
          document.querySelector('[data-testid=email]').value = 'valid.user@hubtel.com';
          document.querySelector('[data-testid=password]').value = 'ValidPassword123!';
          document.querySelector('[data-testid=login-btn]').click();
        })
      ];
      
      await Promise.all(loginPromises);
      
      // Both should succeed or one should handle concurrent session
      const firstPageUrl = page.url();
      const secondPageUrl = secondPage.url();
      
      expect(firstPageUrl === '/dashboard' || firstPageUrl.includes('concurrent-session')).toBeTruthy();
      expect(secondPageUrl === '/dashboard' || secondPageUrl.includes('concurrent-session')).toBeTruthy();
    });
  });

  // Edge Cases and Security
  test.describe('Edge Cases and Security', () => {
    test('session timeout during login process', async () => {
      // Start filling form
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      
      // Simulate session timeout (mock or wait)
      await page.evaluate(() => {
        // Mock session expiration
        localStorage.removeItem('session_token');
        sessionStorage.clear();
      });
      
      // Complete login
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.click('[data-testid=login-btn]');
      
      // Should create new session
      await expect(page).toHaveURL('/dashboard');
    });

    test('network interruption during login', async () => {
      // Simulate network failure
      await page.route('**/api/auth/login', route => route.abort());
      
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.click('[data-testid=login-btn]');
      
      // Should show network error
      await expect(page.locator('[data-testid=network-error]')).toBeVisible();
      await expect(page.locator('[data-testid=retry-btn]')).toBeVisible();
      
      // Restore network and retry
      await page.unroute('**/api/auth/login');
      await page.click('[data-testid=retry-btn]');
      
      await expect(page).toHaveURL('/dashboard');
    });

    TestDataFactory.edgeCaseInputs.forEach((edgeCase) => {
      test(`handles ${edgeCase.type} input correctly`, async () => {
        await page.fill('[data-testid=email]', edgeCase.value);
        await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
        await page.click('[data-testid=login-btn]');
        
        // Verify appropriate handling based on expected behavior
        switch (edgeCase.expected) {
          case 'unicode_support':
            await expect(page).toHaveURL('/dashboard');
            break;
          case 'email_plus_addressing':
            await expect(page).toHaveURL('/dashboard');
            break;
          case 'whitespace_handling':
            await expect(page).toHaveURL('/dashboard');
            // Verify email was trimmed
            const userEmail = await page.locator('[data-testid=user-email]').textContent();
            expect(userEmail?.trim()).toBe(edgeCase.value.trim());
            break;
          case 'case_normalization':
            await expect(page).toHaveURL('/dashboard');
            break;
        }
      });
    });
  });

  // Accessibility and Usability
  test.describe('Accessibility and Usability', () => {
    test('keyboard navigation support', async () => {
      // Tab through form elements
      await page.keyboard.press('Tab'); // Email field
      await expect(page.locator('[data-testid=email]')).toBeFocused();
      
      await page.keyboard.press('Tab'); // Password field  
      await expect(page.locator('[data-testid=password]')).toBeFocused();
      
      await page.keyboard.press('Tab'); // Remember me checkbox
      await expect(page.locator('[data-testid=remember-me]')).toBeFocused();
      
      await page.keyboard.press('Tab'); // Login button
      await expect(page.locator('[data-testid=login-btn]')).toBeFocused();
      
      // Submit with Enter
      await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
      await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
      await page.keyboard.press('Enter');
      
      await expect(page).toHaveURL('/dashboard');
    });

    test('screen reader accessibility', async () => {
      // Verify ARIA labels and roles
      await expect(page.locator('[data-testid=email]')).toHaveAttribute('aria-label', 'Email address');
      await expect(page.locator('[data-testid=password]')).toHaveAttribute('aria-label', 'Password');
      await expect(page.locator('[data-testid=login-form]')).toHaveAttribute('role', 'form');
      
      // Verify error announcements
      await page.fill('[data-testid=email]', 'invalid-email');
      await page.click('[data-testid=login-btn]');
      
      await expect(page.locator('[data-testid=error-message]')).toHaveAttribute('role', 'alert');
      await expect(page.locator('[data-testid=error-message]')).toHaveAttribute('aria-live', 'polite');
    });

    test('responsive design across viewports', async () => {
      const viewports = [
        { width: 320, height: 568, name: 'mobile' },
        { width: 768, height: 1024, name: 'tablet' },
        { width: 1920, height: 1080, name: 'desktop' }
      ];
      
      for (const viewport of viewports) {
        await page.setViewportSize({ width: viewport.width, height: viewport.height });
        
        // Verify form is accessible and functional
        await expect(page.locator('[data-testid=login-form]')).toBeVisible();
        await expect(page.locator('[data-testid=email]')).toBeVisible();
        await expect(page.locator('[data-testid=password]')).toBeVisible();
        await expect(page.locator('[data-testid=login-btn]')).toBeVisible();
        
        // Verify mobile-specific elements if on mobile
        if (viewport.name === 'mobile') {
          await expect(page.locator('[data-testid=mobile-keyboard-friendly]')).toBeVisible();
        }
      }
    });
  });
});

// Comprehensive CRUD Operations Test Template
test.describe('Entity Management - Complete CRUD Coverage', () => {
  const entityName = '{{ENTITY_NAME}}'; // Template placeholder
  const entityPath = '/{{ENTITY_PATH}}'; // Template placeholder

  test.beforeEach(async ({ page }) => {
    await page.goto('/login');
    await page.fill('[data-testid=email]', TestDataFactory.validUser.email);
    await page.fill('[data-testid=password]', TestDataFactory.validUser.password);
    await page.click('[data-testid=login-btn]');
    await expect(page).toHaveURL('/dashboard');
    
    await page.goto(entityPath);
  });

  test.describe('List Operations - All States', () => {
    test('displays empty state with create option', async () => {
      // Mock empty response
      await page.route(`**/api${entityPath}`, route => route.fulfill({
        status: 200,
        body: JSON.stringify({ data: [], total: 0 })
      }));
      
      await page.reload();
      
      await expect(page.locator('[data-testid=empty-state]')).toBeVisible();
      await expect(page.locator('[data-testid=empty-state-message]')).toContainText(`No ${entityName.toLowerCase()}s found`);
      await expect(page.locator('[data-testid=create-btn]')).toBeVisible();
    });

    test('displays populated list with all controls', async () => {
      await expect(page.locator('[data-testid=entity-list]')).toBeVisible();
      await expect(page.locator('[data-testid=pagination]')).toBeVisible();
      await expect(page.locator('[data-testid=sort-controls]')).toBeVisible();
      await expect(page.locator('[data-testid=filter-controls]')).toBeVisible();
      await expect(page.locator('[data-testid=search-input]')).toBeVisible();
    });

    test('handles loading states appropriately', async () => {
      // Delay API response to test loading state
      await page.route(`**/api${entityPath}`, route => {
        setTimeout(() => route.fulfill({
          status: 200,
          body: JSON.stringify({ data: [], total: 0 })
        }), 2000);
      });
      
      await page.reload();
      
      await expect(page.locator('[data-testid=loading-skeleton]')).toBeVisible();
      await expect(page.locator('[data-testid=loading-spinner]')).toBeVisible();
      
      // Wait for loading to complete
      await expect(page.locator('[data-testid=loading-skeleton]')).toBeHidden();
    });

    test('handles error states with recovery options', async () => {
      // Mock error response
      await page.route(`**/api${entityPath}`, route => route.fulfill({
        status: 500,
        body: JSON.stringify({ error: 'Internal server error' })
      }));
      
      await page.reload();
      
      await expect(page.locator('[data-testid=error-state]')).toBeVisible();
      await expect(page.locator('[data-testid=retry-btn]')).toBeVisible();
      
      // Test retry functionality
      await page.unroute(`**/api${entityPath}`);
      await page.click('[data-testid=retry-btn]');
      
      await expect(page.locator('[data-testid=entity-list]')).toBeVisible();
    });
  });

  // Additional comprehensive test scenarios would continue here...
  // Including Create, Read, Update, Delete operations with all variations
  // Performance tests, security tests, integration tests, etc.
});

// Export for reuse in other test files
export { TestDataFactory };