import { test, expect } from '@playwright/test';
import {
  detectBrowserCapabilities,
  detectWASMFeatures,
  detectLoadingFeatures,
  getPerformanceMetrics,
  isComponentLoaded,
  getComponentLoadingState,
  waitForComponentLoad,
  getComponentLoadingProgress,
  isWASMInitialized,
  getBundleSizeInfo,
  getComponentCategories,
  getComponentNames,
} from './feature-detection';

/**
 * Dynamic Loading System Testing Suite
 *
 * This comprehensive test suite validates lazy and dynamic component loading
 * with proper feature detection. Tests adapt based on available features.
 *
 * Features Tested:
 * - Lazy component loading with progress tracking
 * - Dynamic WASM module loading
 * - Bundle analysis and optimization
 * - Search and filter functionality
 * - Favorites system
 * - Error handling and retry
 * - Cross-browser compatibility
 * - Performance metrics
 */
test.describe('Dynamic Loading System - Comprehensive E2E Testing', () => {
  test.beforeEach(async ({ page }) => {
    // Navigate to the enhanced lazy loading demo
    await page.goto('http://localhost:8082');
    // Wait for the app to be fully loaded
    await page.waitForLoadState('networkidle');
    // Wait for WASM to initialize
    await page.waitForFunction(() => (window as any).wasmBindings !== undefined, { timeout: 10000 });
  });

  test.describe('Feature Detection', () => {
    test('should detect browser capabilities', async ({ page }) => {
      const capabilities = await detectBrowserCapabilities(page);

      // Log capabilities for debugging
      console.log('Browser Capabilities:', JSON.stringify(capabilities, null, 2));

      // Basic browser requirements
      expect(capabilities.webAssembly).toBe(true);
      expect(capabilities.bigInt).toBe(true);

      // Optional capabilities
      console.log('SharedArrayBuffer:', capabilities.sharedArrayBuffer);
      console.log('Dynamic Import:', capabilities.supportsDynamicImport);
      console.log('Module Scripts:', capabilities.supportsModuleScripts);
    });

    test('should detect WASM features', async ({ page }) => {
      const wasmFeatures = await detectWASMFeatures(page);

      // Log WASM features for debugging
      console.log('WASM Features:', JSON.stringify(wasmFeatures, null, 2));

      // At minimum, basic WASM should be supported
      expect(wasmFeatures.extensions.length).toBeGreaterThan(0);

      // Check for optional features
      if (wasmFeatures.bulkMemory) {
        console.log('✓ Bulk memory operations supported');
      }
      if (wasmFeatures.referenceTypes) {
        console.log('✓ Reference types supported');
      }
      if (wasmFeatures.simd) {
        console.log('✓ SIMD supported');
      }
    });

    test('should detect loading features in application', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      // Log detected features for debugging
      console.log('Loading Features:', JSON.stringify(features, null, 2));

      // The app should have at least some dynamic loading features
      if (features.componentCount > 0) {
        console.log(`✓ Found ${features.componentCount} components`);
      }
      if (features.categoryCount > 0) {
        console.log(`✓ Found ${features.categoryCount} categories`);
      }
      if (features.hasLazyLoadingUI) {
        console.log('✓ Lazy loading UI detected');
      }
      if (features.hasDynamicLoaderUI) {
        console.log('✓ Dynamic loader UI detected');
      }
      if (features.hasBundleAnalysis) {
        console.log('✓ Bundle analysis detected');
      }
      if (features.hasSearchAndFilter) {
        console.log('✓ Search and filter detected');
      }
      if (features.hasFavoritesSystem) {
        console.log('✓ Favorites system detected');
      }
      if (features.hasErrorHandling) {
        console.log('✓ Error handling detected');
      }
    });

    test('should verify WASM initialization', async ({ page }) => {
      const isInitialized = await isWASMInitialized(page);

      expect(isInitialized).toBe(true);

      // Additional WASM binding checks
      const wasmBindings = await page.evaluate(() => {
        return {
          hasBindings: typeof (window as any).wasmBindings !== 'undefined',
          hasInitTime: typeof (window as any).wasmInitTime !== 'undefined',
        };
      });

      console.log('WASM Binding Status:', wasmBindings);
      expect(wasmBindings.hasBindings).toBe(true);
    });

    test('should collect performance metrics', async ({ page }) => {
      const metrics = await getPerformanceMetrics(page);

      console.log('Performance Metrics:', JSON.stringify(metrics, null, 2));

      // Some performance metrics should be available
      if (metrics.firstPaint !== null) {
        console.log(`First Paint: ${metrics.firstPaint.toFixed(2)}ms`);
        expect(metrics.firstPaint).toBeGreaterThan(0);
      }

      if (metrics.firstContentfulPaint !== null) {
        console.log(`First Contentful Paint: ${metrics.firstContentfulPaint.toFixed(2)}ms`);
        expect(metrics.firstContentfulPaint).toBeGreaterThan(0);
      }

      if (metrics.domContentLoaded !== null) {
        console.log(`DOM Content Loaded: ${metrics.domContentLoaded.toFixed(2)}ms`);
        expect(metrics.domContentLoaded).toBeGreaterThan(0);
      }

      if (metrics.wasmInitTime !== null) {
        console.log(`WASM Init Time: ${metrics.wasmInitTime.toFixed(2)}ms`);
      }
    });
  });

  test.describe('Page Structure & Navigation', () => {
    test('should display main header and title', async ({ page }) => {
      // Use first h1 to avoid strict mode violation
      const header = page.locator('h1').first();
      await expect(header).toBeVisible();
      await expect(header).toContainText('Leptos ShadCN UI Demo');
      
      // Check if subtitle exists (may not be implemented yet)
      const subtitle = page.locator('h2');
      if (await subtitle.count() > 0) {
        await expect(subtitle).toBeVisible();
        await expect(subtitle).toContainText('Dynamic Lazy Loading with Essential Components');
      }
    });

    test('should display all main sections', async ({ page }) => {
      // Check if advanced sections exist (may not be implemented yet)
      const essentialSection = page.locator('h3:has-text("Essential Components")');
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      const bundlePanel = page.locator('.panel.bundle-analysis');
      const loaderPanel = page.locator('.panel.bundle-status');
      
      if (await essentialSection.count() > 0 || await lazySection.count() > 0 || 
          await dynamicSection.count() > 0 || await bundlePanel.count() > 0 || 
          await loaderPanel.count() > 0) {
        
        // Test sections that exist
        if (await essentialSection.count() > 0) {
          await expect(essentialSection).toBeVisible();
        }
        if (await lazySection.count() > 0) {
          await expect(lazySection).toBeVisible();
        }
        if (await dynamicSection.count() > 0) {
          await expect(dynamicSection).toBeVisible();
        }
        if (await bundlePanel.count() > 0) {
          await expect(bundlePanel).toBeVisible();
        }
        if (await loaderPanel.count() > 0) {
          await expect(loaderPanel).toBeVisible();
        }
      } else {
        // Advanced sections not implemented yet - skip test
        test.skip('Advanced dynamic loading sections not implemented in current demo app');
      }
    });
  });

  test.describe('Bundle Analysis Panel', () => {
    test('should display bundle metrics correctly', async ({ page }) => {
      const bundlePanel = page.locator('.panel.bundle-analysis');
      
      if (await bundlePanel.count() > 0) {
        await expect(bundlePanel).toBeVisible();
        
        // Check for bundle size information
        await expect(bundlePanel.locator('text=Bundle Size:')).toBeVisible();
        await expect(bundlePanel.locator('text=Components:')).toBeVisible();
        await expect(bundlePanel.locator('text=Optimization:')).toBeVisible();
      } else {
        // Bundle analysis panel not implemented yet - skip test
        test.skip('Bundle analysis panel not implemented in current demo app');
      }
    });

    test('should show accurate bundle statistics', async ({ page }) => {
      const bundlePanel = page.locator('.panel.bundle-analysis');
      
      if (await bundlePanel.count() > 0) {
        // Bundle size should be displayed
        const sizeText = await bundlePanel.locator('text=/Bundle Size:.*/').textContent();
        expect(sizeText).toMatch(/Bundle Size:.*\d+\.\d+MB/);
        
        // Component count should be accurate
        const componentText = await bundlePanel.locator('text=/Components:.*/').textContent();
        expect(componentText).toMatch(/Components:.*\d+/);
      } else {
        // Bundle analysis panel not implemented yet - skip test
        test.skip('Bundle analysis panel not implemented in current demo app');
      }
    });
  });

  test.describe('Dynamic WASM Loader Status Panel', () => {
    test('should display loader status information', async ({ page }) => {
      const loaderPanel = page.locator('.panel.bundle-status');
      
      if (await loaderPanel.count() > 0) {
        await expect(loaderPanel).toBeVisible();
        
        // Check for loader header
        await expect(loaderPanel.locator('.loader-header')).toBeVisible();
        await expect(loaderPanel.locator('text=Dynamic WASM Loader Status')).toBeVisible();
      } else {
        // Dynamic loader panel not implemented yet - skip test
        test.skip('Dynamic loader panel not implemented in current demo app');
      }
    });

    test('should show initial loading state', async ({ page }) => {
      const loaderPanel = page.locator('.panel.bundle-status');
      
      if (await loaderPanel.count() > 0) {
        // Initial state should show 0 loaded components
        await expect(loaderPanel.locator('text=Loaded: 0')).toBeVisible();
        await expect(loaderPanel.locator('text=Total Size: 0KB')).toBeVisible();
      } else {
        // Dynamic loader panel not implemented yet - skip test
        test.skip('Dynamic loader panel not implemented in current demo app');
      }
    });

    test('should have functional load test button', async ({ page }) => {
      const loadButton = page.locator('.load-btn');
      
      if (await loadButton.count() > 0) {
        await expect(loadButton).toBeVisible();
        await expect(loadButton).toHaveText('Load Test Component');
        
        // Button should be clickable
        await expect(loadButton).toBeEnabled();
      } else {
        // Load button not implemented yet - skip test
        test.skip('Load button not implemented in current demo app');
      }
    });

    test('should toggle details visibility', async ({ page }) => {
      const toggleBtn = page.locator('.toggle-btn');
      const detailsContent = page.locator('.details-content');
      
      if (await toggleBtn.count() > 0 && await detailsContent.count() > 0) {
        // Initially details should be hidden
        await expect(detailsContent).toHaveClass(/hidden/);
        
        // Click toggle button
        await toggleBtn.click();
        
        // Details should now be visible
        await expect(detailsContent).not.toHaveClass(/hidden/);
        
        // Click again to hide
        await toggleBtn.click();
        await expect(detailsContent).toHaveClass(/hidden/);
      } else {
        // Toggle functionality not implemented yet - skip test
        test.skip('Toggle functionality not implemented in current demo app');
      }
    });
  });

  test.describe('Essential Components Section', () => {
    test('should display all 5 essential components', async ({ page }) => {
      const essentialSection = page.locator('h3:has-text("Essential Components")');
      
      if (await essentialSection.count() > 0) {
        const essentialSectionParent = essentialSection.locator('..');
        
        // Should have 5 essential components
        const components = essentialSectionParent.locator('.component-item');
        await expect(components).toHaveCount(5);
        
        // Check component names
        const componentNames = ['Button', 'Input', 'Card', 'Badge', 'Label'];
        for (const name of componentNames) {
          await expect(essentialSectionParent.locator(`text=${name}`)).toBeVisible();
        }
      } else {
        // Essential components section not implemented yet - skip test
        test.skip('Essential components section not implemented in current demo app');
      }
    });

    test('essential components should be immediately visible', async ({ page }) => {
      const essentialSection = page.locator('h3:has-text("Essential Components")').locator('..');
      
      // All essential components should be visible without loading
      const components = essentialSection.locator('.component-item');
      for (let i = 0; i < await components.count(); i++) {
        const component = components.nth(i);
        await expect(component).toBeVisible();
        await expect(component).not.toHaveClass(/loading/);
      }
    });
  });

  test.describe('Lazy Loaded Components Section', () => {
    test('should display all component categories', async ({ page }) => {
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      
      if (await lazySection.count() > 0) {
        const lazySectionParent = lazySection.locator('..');
        
        // Check for all 4 categories
        const categories = ['Form & Input', 'Layout & Navigation', 'Overlay & Feedback', 'Data & Media'];
        for (const category of categories) {
          await expect(lazySectionParent.locator(`text=${category}`)).toBeVisible();
        }
      } else {
        // Lazy loaded components section not implemented yet - skip test
        test.skip('Lazy loaded components section not implemented in current demo app');
      }
    });

    test('should show correct component counts per category', async ({ page }) => {
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      
      if (await lazySection.count() > 0) {
        const lazySectionParent = lazySection.locator('..');
        
        // Form & Input: 12 components
        const formSection = lazySectionParent.locator('h4:has-text("Form & Input")').locator('..');
        const formComponents = formSection.locator('.lazy-component-wrapper');
        await expect(formComponents).toHaveCount(12);
        
        // Layout & Navigation: 8 components
        const layoutSection = lazySectionParent.locator('h4:has-text("Layout & Navigation")').locator('..');
        const layoutComponents = layoutSection.locator('.lazy-component-wrapper');
        await expect(layoutComponents).toHaveCount(8);
        
        // Overlay & Feedback: 10 components
        const overlaySection = lazySectionParent.locator('h4:has-text("Overlay & Feedback")').locator('..');
        const overlayComponents = overlaySection.locator('.lazy-component-wrapper');
        await expect(overlayComponents).toHaveCount(10);
        
        // Data & Media: 9 components
        const dataSection = lazySectionParent.locator('h4:has-text("Data & Media")').locator('..');
        const dataComponents = dataSection.locator('.lazy-component-wrapper');
        await expect(dataComponents).toHaveCount(9);
      } else {
        // Lazy loaded components section not implemented yet - skip test
        test.skip('Lazy loaded components section not implemented in current demo app');
      }
    });

    test('lazy components should start in placeholder state', async ({ page }) => {
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      
      if (await lazySection.count() > 0) {
        const lazySectionParent = lazySection.locator('..');
        const lazyComponents = lazySectionParent.locator('.lazy-component-wrapper');
        
        // All lazy components should start in placeholder state
        for (let i = 0; i < await lazyComponents.count(); i++) {
          const component = lazyComponents.nth(i);
          await expect(component.locator('.component-placeholder')).toBeVisible();
          await expect(component.locator('.component-content')).not.toBeVisible();
        }
      } else {
        // Lazy loaded components section not implemented yet - skip test
        test.skip('Lazy loaded components section not implemented in current demo app');
      }
    });
  });

  test.describe('Dynamic WASM Components Section', () => {
    test('should display all 5 dynamic components', async ({ page }) => {
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await dynamicSection.count() > 0) {
        const dynamicSectionParent = dynamicSection.locator('..');
        
        // Should have 5 dynamic components
        const components = dynamicSectionParent.locator('.dynamic-component-wrapper');
        await expect(components).toHaveCount(5);
        
        // Check component names
        const componentNames = ['Button', 'Input', 'Card', 'Modal', 'Table'];
        for (const name of componentNames) {
          await expect(dynamicSectionParent.locator(`text=${name}`)).toBeVisible();
        }
      } else {
        // Dynamic WASM components section not implemented yet - skip test
        test.skip('Dynamic WASM components section not implemented in current demo app');
      }
    });

    test('dynamic components should show correct metadata', async ({ page }) => {
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await dynamicSection.count() > 0) {
        const dynamicSectionParent = dynamicSection.locator('..');
        const components = dynamicSectionParent.locator('.dynamic-component-wrapper');
        
        // Check first component (Button)
        const buttonComponent = components.first();
        await expect(buttonComponent.locator('.component-category')).toContainText('Form & Input');
        await expect(buttonComponent.locator('.component-size')).toContainText('15KB');
        await expect(buttonComponent.locator('.component-description')).toContainText('Interactive button component');
      } else {
        // Dynamic WASM components section not implemented yet - skip test
        test.skip('Dynamic WASM components section not implemented in current demo app');
      }
    });

    test('dynamic components should start in placeholder state', async ({ page }) => {
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await dynamicSection.count() > 0) {
        const dynamicSectionParent = dynamicSection.locator('..');
        const components = dynamicSectionParent.locator('.dynamic-component-wrapper');
        
        // All dynamic components should start in placeholder state
        for (let i = 0; i < await components.count(); i++) {
          const component = components.nth(i);
          await expect(component.locator('.component-placeholder')).toBeVisible();
          await expect(component.locator('.component-content')).not.toBeVisible();
        }
      } else {
        // Dynamic WASM components section not implemented yet - skip test
        test.skip('Dynamic WASM components section not implemented in current demo app');
      }
    });
  });

  test.describe('Component Loading Functionality', () => {
    test('should load lazy components on demand', async ({ page }) => {
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      
      if (await lazySection.count() > 0) {
        const lazySectionParent = lazySection.locator('..');
        const firstComponent = lazySectionParent.locator('.lazy-component-wrapper').first();
        
        // Click load button
        const loadBtn = firstComponent.locator('.load-component-btn');
        await loadBtn.click();
        
        // Should show loading state
        await expect(firstComponent.locator('.component-loading')).toBeVisible();
        
        // Wait for loading to complete
        await expect(firstComponent.locator('.component-success')).toBeVisible({ timeout: 10000 });
        
        // Should show component content
        await expect(firstComponent.locator('.component-content')).toBeVisible();
      } else {
        // Lazy loading functionality not implemented yet - skip test
        test.skip('Lazy loading functionality not implemented in current demo app');
      }
    });

    test('should load dynamic components on demand', async ({ page }) => {
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await dynamicSection.count() > 0) {
        const dynamicSectionParent = dynamicSection.locator('..');
        const firstComponent = dynamicSectionParent.locator('.dynamic-component-wrapper').first();
        
        // Click load button
        const loadBtn = firstComponent.locator('.load-component-btn');
        await loadBtn.click();
        
        // Should show loading state
        await expect(firstComponent.locator('.component-loading')).toBeVisible();
        
        // Wait for loading to complete
        await expect(firstComponent.locator('.component-success')).toBeVisible({ timeout: 10000 });
        
        // Should show component content
        await expect(firstComponent.locator('.component-content')).toBeVisible();
      } else {
        // Dynamic loading functionality not implemented yet - skip test
        test.skip('Dynamic loading functionality not implemented in current demo app');
      }
    });

    test('should handle multiple component loads simultaneously', async ({ page }) => {
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await dynamicSection.count() > 0) {
        const dynamicSectionParent = dynamicSection.locator('..');
        const components = dynamicSectionParent.locator('.dynamic-component-wrapper');
        
        // Load first 3 components simultaneously
        for (let i = 0; i < 3; i++) {
          const component = components.nth(i);
          const loadBtn = component.locator('.load-component-btn');
          await loadBtn.click();
        }
        
        // All should show loading state
        for (let i = 0; i < 3; i++) {
          const component = components.nth(i);
          await expect(component.locator('.component-loading')).toBeVisible();
        }
        
        // Wait for all to complete
        for (let i = 0; i < 3; i++) {
          const component = components.nth(i);
          await expect(component.locator('.component-success')).toBeVisible({ timeout: 15000 });
        }
      } else {
        // Dynamic loading functionality not implemented yet - skip test
        test.skip('Dynamic loading functionality not implemented in current demo app');
      }
    });
  });

  test.describe('Search and Filter Functionality', () => {
    test('should display search input and category filter', async ({ page }) => {
      const searchSection = page.locator('.search-filters');
      
      if (await searchSection.count() > 0) {
        await expect(searchSection).toBeVisible();
        
        // Search input
        await expect(searchSection.locator('input[placeholder*="search"]')).toBeVisible();
        
        // Category filter
        await expect(searchSection.locator('select')).toBeVisible();
      } else {
        // Search and filter functionality not implemented yet - skip test
        test.skip('Search and filter functionality not implemented in current demo app');
      }
    });

    test('should filter components by category', async ({ page }) => {
      const categorySelect = page.locator('select');
      
      if (await categorySelect.count() > 0) {
        // Select "Form & Input" category
        await categorySelect.selectOption('form-input');
        
        // Should show only form components
        const visibleComponents = page.locator('.lazy-component-wrapper:visible');
        await expect(visibleComponents).toHaveCount(12);
        
        // Should hide other categories
        await expect(page.locator('h4:has-text("Layout & Navigation")')).not.toBeVisible();
      } else {
        // Category filtering not implemented yet - skip test
        test.skip('Category filtering not implemented in current demo app');
      }
    });

    test('should search components by name', async ({ page }) => {
      const searchInput = page.locator('input[placeholder*="search"]');
      
      if (await searchInput.count() > 0) {
        // Search for "button"
        await searchInput.fill('button');
        
        // Should show only button-related components
        const visibleComponents = page.locator('.lazy-component-wrapper:visible');
        await expect(visibleComponents.count()).toBeLessThan(39); // Less than total
        
        // Should show button components
        await expect(page.locator('text=Button')).toBeVisible();
      } else {
        // Search functionality not implemented yet - skip test
        test.skip('Search functionality not implemented in current demo app');
      }
    });
  });

  test.describe('Favorites System', () => {
    test('should allow marking components as favorites', async ({ page }) => {
      const firstComponent = page.locator('.lazy-component-wrapper').first();
      const favoriteBtn = firstComponent.locator('.favorite-btn');
      
      if (await favoriteBtn.count() > 0) {
        // Initially not favorited
        await expect(favoriteBtn).not.toHaveClass(/favorited/);
        
        // Click to favorite
        await favoriteBtn.click();
        
        // Should now be favorited
        await expect(favoriteBtn).toHaveClass(/favorited/);
      } else {
        // Favorites functionality not implemented yet - skip test
        test.skip('Favorites functionality not implemented in current demo app');
      }
    });

    test('should filter by favorites', async ({ page }) => {
      // Check if favorites functionality exists
      const firstComponent = page.locator('.lazy-component-wrapper').first();
      const favoriteBtn = firstComponent.locator('.favorite-btn');
      const favoritesFilter = page.locator('.favorites-filter');
      
      if (await favoriteBtn.count() > 0 && await favoritesFilter.count() > 0) {
        // Mark a few components as favorites
        const components = page.locator('.lazy-component-wrapper');
        for (let i = 0; i < 3; i++) {
          const component = components.nth(i);
          const favoriteBtn = component.locator('.favorite-btn');
          await favoriteBtn.click();
        }
        
        // Click favorites filter
        await favoritesFilter.click();
        
        // Should show only favorited components
        const visibleComponents = page.locator('.lazy-component-wrapper:visible');
        await expect(visibleComponents).toHaveCount(3);
      } else {
        // Favorites filtering not implemented yet - skip test
        test.skip('Favorites filtering not implemented in current demo app');
      }
    });
  });

  test.describe('Error Handling', () => {
    test('should handle component loading errors gracefully', async ({ page }) => {
      // Check if error handling infrastructure exists
      const errorComponent = page.locator('.component-error');
      
      if (await errorComponent.count() > 0) {
        // This test would require mocking a failed component load
        // For now, we'll test that error states are properly styled
        
        // Error states should be properly styled when they occur
        // (This will be empty initially, but ensures error styling is available)
        await expect(errorComponent).toBeAttached();
      } else {
        // Error handling not implemented yet - skip test
        test.skip('Error handling not implemented in current demo app');
      }
    });

    test('should provide retry functionality for failed loads', async ({ page }) => {
      // Check if retry functionality exists
      const retryBtn = page.locator('.retry-btn');
      
      if (await retryBtn.count() > 0) {
        // Test retry button functionality
        
        // Retry button should be available (though initially hidden)
        await expect(retryBtn).toBeAttached();
      } else {
        // Retry functionality not implemented yet - skip test
        test.skip('Retry functionality not implemented in current demo app');
      }
    });
  });

  test.describe('Performance and Responsiveness', () => {
    test('should maintain performance with many components', async ({ page }) => {
      // Check if lazy loading functionality exists
      const components = page.locator('.lazy-component-wrapper');
      
      if (await components.count() > 0) {
        const loadButtons = components.locator('.load-component-btn');
        
        // Load first 5 components
        for (let i = 0; i < 5; i++) {
          const loadBtn = loadButtons.nth(i);
          await loadBtn.click();
        }
        
        // Wait for all to complete
        for (let i = 0; i < 5; i++) {
          const component = components.nth(i);
          await expect(component.locator('.component-success')).toBeVisible({ timeout: 20000 });
        }
        
        // Page should remain responsive
        await expect(page.locator('h1').first()).toBeVisible();
      } else {
        // Lazy loading functionality not implemented yet - skip test
        test.skip('Lazy loading functionality not implemented in current demo app');
      }
    });

    test('should be responsive on mobile devices', async ({ page }) => {
      // Set mobile viewport
      await page.setViewportSize({ width: 375, height: 667 });
      
      // Check if advanced sections exist (may not be implemented yet)
      const essentialSection = page.locator('h3:has-text("Essential Components")');
      const lazySection = page.locator('h3:has-text("Lazy Loaded Components")');
      const dynamicSection = page.locator('h3:has-text("Dynamic WASM Components")');
      
      if (await essentialSection.count() > 0 || await lazySection.count() > 0 || await dynamicSection.count() > 0) {
        // Test sections that exist
        if (await essentialSection.count() > 0) {
          await expect(essentialSection).toBeVisible();
        }
        if (await lazySection.count() > 0) {
          await expect(lazySection).toBeVisible();
        }
        if (await dynamicSection.count() > 0) {
          await expect(dynamicSection).toBeVisible();
        }
        
        // Components should be properly stacked
        const components = page.locator('.lazy-component-wrapper');
        if (await components.count() > 0) {
          await expect(components.first()).toBeVisible();
        }
      } else {
        // Advanced sections not implemented yet - skip test
        test.skip('Advanced sections not implemented in current demo app');
      }
    });
  });

  test.describe('Accessibility', () => {
    test('should have proper ARIA labels and roles', async ({ page }) => {
      // Check for proper button labels
      const loadButtons = page.locator('.load-component-btn');
      for (let i = 0; i < await loadButtons.count(); i++) {
        const button = loadButtons.nth(i);
        await expect(button).toHaveAttribute('aria-label', /load.*component/i);
      }
      
      // Check for proper form labels if search input exists
      const searchInput = page.locator('input[placeholder*="search"]');
      if (await searchInput.count() > 0) {
        await expect(searchInput).toHaveAttribute('aria-label', /search/i);
      } else {
        // Search functionality not implemented yet - skip this check
        console.log('Search input not implemented in current demo app');
      }
    });

    test('should support keyboard navigation', async ({ page }) => {
      // Tab through interactive elements
      await page.keyboard.press('Tab');
      
      // Should focus on first interactive element
      const focusedElement = page.locator(':focus');
      await expect(focusedElement).toBeVisible();
      
      // Should be able to navigate with arrow keys
      await page.keyboard.press('ArrowDown');
    });
  });

  test.describe('Integration with WASM', () => {
    test('should properly initialize WASM bindings', async ({ page }) => {
      // Check that WASM bindings are available
      const wasmBindings = await page.evaluate(() => (window as any).wasmBindings);
      expect(wasmBindings).toBeDefined();

      // Check that the app is properly mounted
      await expect(page.locator('h1').first()).toBeVisible();
    });

    test('should handle WASM loading states correctly', async ({ page }) => {
      // Check if load component buttons exist
      const loadComponentBtn = page.locator('.load-component-btn');

      if (await loadComponentBtn.count() > 0) {
        // The app should be fully loaded and interactive
        await expect(loadComponentBtn.first()).toBeEnabled();

        // No loading spinners should be visible initially
        const loadingSpinners = page.locator('.loading-spinner:visible');
        await expect(loadingSpinners).toHaveCount(0);
      } else {
        // Load component functionality not implemented yet - skip test
        test.skip('Load component functionality not implemented in current demo app');
      }
    });
  });

  // New comprehensive tests with feature detection
  test.describe('Lazy Component Loading with Feature Detection', () => {
    test('should detect and verify lazy loading capability', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI, 'Lazy loading UI not available');
      test.skip(features.componentCount === 0, 'No components found for testing');

      console.log(`Testing with ${features.componentCount} components`);

      // Get all component names
      const componentNames = await getComponentNames(page);
      console.log('Available components:', componentNames);

      expect(componentNames.length).toBeGreaterThan(0);
    });

    test('should track component loading state transitions', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI, 'Lazy loading UI not available');

      const componentNames = await getComponentNames(page);
      test.skip(componentNames.length === 0, 'No components available');

      const firstComponentName = componentNames[0];

      // Initially should be in placeholder state
      const initialState = await getComponentLoadingState(page, firstComponentName);
      console.log(`Initial state for ${firstComponentName}:`, initialState);
      expect(['placeholder', 'loaded']).toContain(initialState);

      // If there's a load button, try loading the component
      const component = page.locator('.lazy-component-wrapper, .dynamic-component-wrapper').filter({
        hasText: firstComponentName,
      });
      const loadBtn = component.locator('.load-btn, .load-component-btn');

      if ((await loadBtn.count()) > 0) {
        await loadBtn.click();

        // Should transition to loading
        await page.waitForTimeout(100);
        const loadingState = await getComponentLoadingState(page, firstComponentName);
        console.log(`Loading state for ${firstComponentName}:`, loadingState);
        expect(['loading', 'loaded']).toContain(loadingState);

        // Wait for completion
        const loaded = await waitForComponentLoad(page, firstComponentName, 5000);
        if (loaded) {
          const finalState = await getComponentLoadingState(page, firstComponentName);
          console.log(`Final state for ${firstComponentName}:`, finalState);
          expect(finalState).toBe('loaded');
        }
      }
    });

    test('should monitor loading progress', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI, 'Lazy loading UI not available');

      const componentNames = await getComponentNames(page);
      test.skip(componentNames.length === 0, 'No components available');

      const firstComponentName = componentNames[0];

      // Get initial progress
      const initialProgress = await getComponentLoadingProgress(page, firstComponentName);
      console.log(`Initial progress for ${firstComponentName}: ${initialProgress}%`);

      // If there's a load button, trigger loading and monitor progress
      const component = page.locator('.lazy-component-wrapper, .dynamic-component-wrapper').filter({
        hasText: firstComponentName,
      });
      const loadBtn = component.locator('.load-btn, .load-component-btn');

      if ((await loadBtn.count()) > 0) {
        await loadBtn.click();

        // Monitor progress during loading
        let previousProgress = initialProgress;
        for (let i = 0; i < 10; i++) {
          await page.waitForTimeout(200);
          const currentProgress = await getComponentLoadingProgress(page, firstComponentName);
          console.log(`Progress update ${i}: ${currentProgress}%`);

          if (currentProgress > previousProgress) {
            console.log(`✓ Progress increased from ${previousProgress}% to ${currentProgress}%`);
          }
          previousProgress = currentProgress;

          if (currentProgress >= 100) {
            break;
          }
        }
      }
    });
  });

  test.describe('Dynamic Component Loading with Feature Detection', () => {
    test('should detect and verify dynamic loading capability', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasDynamicLoaderUI, 'Dynamic loader UI not available');

      // Check for dynamic loader display
      const loaderDisplay = page.locator('.dynamic-loader-display, .loader-status');
      if ((await loaderDisplay.count()) > 0) {
        console.log('✓ Dynamic loader display found');
        await expect(loaderDisplay).toBeVisible();
      } else {
        console.log('Dynamic loader display not found, checking for components...');
        const components = await getComponentNames(page);
        console.log(`Found ${components.length} components available`);
      }
    });

    test('should track module loading in dynamic loader', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasDynamicLoaderUI, 'Dynamic loader UI not available');

      const loaderDisplay = page.locator('.dynamic-loader-display, .loader-status');

      if ((await loaderDisplay.count()) > 0) {
        // Check initial state
        const loadedCountText = await loaderDisplay.locator('text=Loaded Modules:').textContent();
        console.log('Initial loaded modules:', loadedCountText);

        // Try to load a test component
        const loadBtn = loaderDisplay.locator('.load-btn');
        if ((await loadBtn.count()) > 0) {
          await loadBtn.click();

          // Wait a moment and check updated state
          await page.waitForTimeout(2000);
          const updatedCountText = await loaderDisplay.locator('text=Loaded Modules:').textContent();
          console.log('Updated loaded modules:', updatedCountText);
        }
      }
    });

    test('should handle multiple simultaneous loads', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI && !features.hasDynamicLoaderUI, 'No loading UI available');

      const componentNames = await getComponentNames(page);
      test.skip(componentNames.length < 3, 'Need at least 3 components for this test');

      console.log(`Testing simultaneous load with ${componentNames.slice(0, 3).join(', ')}`);

      // Load first 3 components
      for (let i = 0; i < Math.min(3, componentNames.length); i++) {
        const componentName = componentNames[i];
        const component = page.locator('.lazy-component-wrapper, .dynamic-component-wrapper').filter({
          hasText: componentName,
        });
        const loadBtn = component.locator('.load-btn, .load-component-btn');

        if ((await loadBtn.count()) > 0) {
          await loadBtn.click();
        }
      }

      // Check that multiple components are loading
      const loadingComponents = page.locator('.component-loading:visible');
      const loadingCount = await loadingComponents.count();
      console.log(`Components loading simultaneously: ${loadingCount}`);
    });
  });

  test.describe('Bundle Analysis with Feature Detection', () => {
    test('should detect and analyze bundle information', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasBundleAnalysis, 'Bundle analysis not available');

      const bundleInfo = await getBundleSizeInfo(page);

      if (bundleInfo) {
        console.log('Bundle Information:', bundleInfo);

        if (bundleInfo.initialBundle) {
          console.log(`Initial bundle size: ${bundleInfo.initialBundle}`);
        }

        if (bundleInfo.loadedComponents > 0) {
          console.log(`Loaded components: ${bundleInfo.loadedComponents}`);
        }

        if (bundleInfo.totalSize) {
          console.log(`Total size: ${bundleInfo.totalSize}`);
        }

        if (bundleInfo.optimization) {
          console.log(`Optimization: ${bundleInfo.optimization}`);
        }
      } else {
        console.log('Bundle info panel not found, may not be implemented');
        test.skip(true, 'Bundle information not available');
      }
    });

    test('should track bundle size changes during loading', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasBundleAnalysis, 'Bundle analysis not available');

      const initialBundleInfo = await getBundleSizeInfo(page);

      if (initialBundleInfo) {
        console.log('Initial bundle info:', initialBundleInfo);

        // Load a component
        const componentNames = await getComponentNames(page);
        if (componentNames.length > 0) {
          const firstComponent = page.locator('.lazy-component-wrapper, .dynamic-component-wrapper').filter({
            hasText: componentNames[0],
          });
          const loadBtn = firstComponent.locator('.load-btn, .load-component-btn');

          if ((await loadBtn.count()) > 0) {
            await loadBtn.click();
            await page.waitForTimeout(2000);

            const updatedBundleInfo = await getBundleSizeInfo(page);
            console.log('Updated bundle info:', updatedBundleInfo);

            if (updatedBundleInfo && initialBundleInfo) {
              const initialComponents = initialBundleInfo.loadedComponents;
              const updatedComponents = updatedBundleInfo.loadedComponents;

              if (updatedComponents > initialComponents) {
                console.log(`✓ Component count increased from ${initialComponents} to ${updatedComponents}`);
              }
            }
          }
        }
      }
    });
  });

  test.describe('Component Categories with Feature Detection', () => {
    test('should detect and list all component categories', async ({ page }) => {
      const categories = await getComponentCategories(page);

      console.log(`Found ${categories.length} categories:`, categories);

      const expectedCategories = [
        'Form & Input',
        'Layout & Navigation',
        'Overlay & Feedback',
        'Data & Media',
      ];

      if (categories.length > 0) {
        // Verify at least some expected categories exist
        const foundCategories = categories.filter((c) => expectedCategories.includes(c));
        console.log(`Found ${foundCategories.length} expected categories`);
      } else {
        console.log('No categories detected, may not be implemented');
      }
    });

    test('should filter components by category', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasSearchAndFilter, 'Search and filter not available');

      const categories = await getComponentCategories(page);
      test.skip(categories.length === 0, 'No categories available');

      console.log(`Testing category filter with ${categories.length} categories`);

      // Try to find category filter controls
      const categorySelect = page.locator('select');
      const categoryButtons = page.locator('[data-category], .category-filter');

      if ((await categorySelect.count()) > 0) {
        console.log('Found category select dropdown');
        const options = await categorySelect.locator('option').allTextContents();
        console.log('Available options:', options);
      } else if ((await categoryButtons.count()) > 0) {
        console.log(`Found ${await categoryButtons.count()} category filter buttons`);
      } else {
        console.log('No category filter controls found');
      }
    });
  });

  test.describe('Search and Filter with Feature Detection', () => {
    test('should detect search functionality', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasSearchAndFilter, 'Search and filter not available');

      const searchInput = page.locator('input[placeholder*="search" i], input[type="search"]');
      const filterControls = page.locator('.filter-controls, .category-filter');

      const hasSearch = (await searchInput.count()) > 0;
      const hasFilters = (await filterControls.count()) > 0;

      console.log('Search functionality detected:');
      console.log(`  - Search input: ${hasSearch}`);
      console.log(`  - Filter controls: ${hasFilters}`);

      test.skip(!hasSearch && !hasFilters, 'No search or filter controls found');
    });

    test('should filter components by search term', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasSearchAndFilter, 'Search and filter not available');

      const searchInput = page.locator('input[placeholder*="search" i], input[type="search"]');

      if ((await searchInput.count()) > 0) {
        const componentNames = await getComponentNames(page);
        console.log(`Available components before search: ${componentNames.length}`);

        // Search for a common term
        await searchInput.fill('button');
        await page.waitForTimeout(500);

        // Check that results are filtered
        const visibleComponents = page.locator('.lazy-component-wrapper:visible, .dynamic-component-wrapper:visible');
        const visibleCount = await visibleComponents.count();
        console.log(`Visible components after search: ${visibleCount}`);
      } else {
        test.skip(true, 'Search input not found');
      }
    });
  });

  test.describe('Favorites System with Feature Detection', () => {
    test('should detect favorites functionality', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasFavoritesSystem, 'Favorites system not available');

      const favoriteButtons = page.locator('.favorite-btn, .favorite-toggle');
      const count = await favoriteButtons.count();

      console.log(`Found ${count} favorite buttons`);

      test.skip(count === 0, 'No favorite buttons found');

      // Check the first favorite button
      const firstFavoriteBtn = favoriteButtons.first();
      await expect(firstFavoriteBtn).toBeVisible();
    });

    test('should toggle favorite state', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasFavoritesSystem, 'Favorites system not available');

      const favoriteButtons = page.locator('.favorite-btn, .favorite-toggle');
      test.skip((await favoriteButtons.count()) === 0, 'No favorite buttons found');

      const firstFavoriteBtn = favoriteButtons.first();
      const component = firstFavoriteBtn.locator('..');

      // Get initial state
      const initialText = await firstFavoriteBtn.textContent();
      console.log('Initial favorite button text:', initialText);

      // Toggle favorite
      await firstFavoriteBtn.click();
      await page.waitForTimeout(200);

      const afterClickText = await firstFavoriteBtn.textContent();
      console.log('After click favorite button text:', afterClickText);

      // Toggle back
      await firstFavoriteBtn.click();
      await page.waitForTimeout(200);

      const afterSecondClickText = await firstFavoriteBtn.textContent();
      console.log('After second click favorite button text:', afterSecondClickText);
    });

    test('should filter by favorite status', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasFavoritesSystem, 'Favorites system not available');

      const favoriteButtons = page.locator('.favorite-btn, .favorite-toggle');
      const favoritesFilter = page.locator('.favorites-filter, [data-filter="favorites"]');

      test.skip((await favoriteButtons.count()) === 0, 'No favorite buttons found');
      test.skip((await favoritesFilter.count()) === 0, 'No favorites filter found');

      console.log('Testing favorites filter functionality');

      // Mark first component as favorite
      const firstFavoriteBtn = favoriteButtons.first();
      await firstFavoriteBtn.click();
      await page.waitForTimeout(200);

      // Apply favorites filter
      await favoritesFilter.click();
      await page.waitForTimeout(200);

      const visibleComponents = page.locator('.lazy-component-wrapper:visible, .dynamic-component-wrapper:visible');
      const visibleCount = await visibleComponents.count();
      console.log(`Visible components after filtering by favorites: ${visibleCount}`);
    });
  });

  test.describe('Error Handling with Feature Detection', () => {
    test('should detect error handling infrastructure', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasErrorHandling, 'Error handling not available');

      const errorStates = page.locator('.component-error, .error-state');
      const retryButtons = page.locator('.retry-btn');

      const hasErrorStates = (await errorStates.count()) > 0;
      const hasRetryButtons = (await retryButtons.count()) > 0;

      console.log('Error handling detected:');
      console.log(`  - Error states: ${hasErrorStates}`);
      console.log(`  - Retry buttons: ${hasRetryButtons}`);

      if (hasErrorStates || hasRetryButtons) {
        console.log('✓ Error handling infrastructure is available');
      }
    });

    test('should handle loading errors gracefully', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasErrorHandling, 'Error handling not available');

      // Check for error state elements
      const errorStates = page.locator('.component-error, .error-state');

      if ((await errorStates.count()) > 0) {
        console.log('Error state elements found');

        // Check that error states have proper styling
        const firstErrorState = errorStates.first();
        await expect(firstErrorState).toBeAttached();
      } else {
        console.log('No error state elements currently displayed');
      }
    });

    test('should provide retry functionality', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasErrorHandling, 'Error handling not available');

      const retryButtons = page.locator('.retry-btn');

      if ((await retryButtons.count()) > 0) {
        console.log('Retry buttons found');

        // Check that retry buttons are properly configured
        const firstRetryBtn = retryButtons.first();
        await expect(firstRetryBtn).toBeAttached();

        const buttonText = await firstRetryBtn.textContent();
        console.log('Retry button text:', buttonText);
      } else {
        console.log('No retry buttons currently displayed');
      }
    });
  });

  test.describe('Cross-Browser Compatibility', () => {
    test('should work across different browsers', async ({ page, browserName }) => {
      console.log(`Testing on browser: ${browserName}`);

      const capabilities = await detectBrowserCapabilities(page);
      console.log('Browser capabilities:', JSON.stringify(capabilities, null, 2));

      // WASM should be available on all modern browsers
      expect(capabilities.webAssembly).toBe(true);

      // The app should load correctly
      await expect(page.locator('h1').first()).toBeVisible();
    });

    test('should handle WASM feature variations', async ({ page, browserName }) => {
      console.log(`Checking WASM features on ${browserName}`);

      const wasmFeatures = await detectWASMFeatures(page);
      console.log('WASM features:', JSON.stringify(wasmFeatures, null, 2));

      // Log feature support for this browser
      const features = [];
      if (wasmFeatures.bulkMemory) features.push('bulk-memory');
      if (wasmFeatures.referenceTypes) features.push('reference-types');
      if (wasmFeatures.exceptions) features.push('exceptions');
      if (wasmFeatures.simd) features.push('simd');
      if (wasmFeatures.multiValue) features.push('multi-value');

      console.log(`Supported WASM features on ${browserName}:`, features.join(', '));
    });

    test('should maintain functionality with different feature sets', async ({ page }) => {
      const capabilities = await detectBrowserCapabilities(page);
      const wasmFeatures = await detectWASMFeatures(page);

      // The app should work even with different feature sets
      console.log('Testing with feature set:');
      console.log(`  - WASM: ${capabilities.webAssembly}`);
      console.log(`  - SharedArrayBuffer: ${capabilities.sharedArrayBuffer}`);
      console.log(`  - SIMD: ${wasmFeatures.simd}`);

      // Basic functionality should always work
      await expect(page.locator('h1').first()).toBeVisible();

      // Check if WASM initialized successfully
      const isInitialized = await isWASMInitialized(page);
      expect(isInitialized).toBe(true);
    });
  });

  test.describe('Performance Monitoring', () => {
    test('should measure component load times', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI && !features.hasDynamicLoaderUI, 'No loading UI available');

      const componentNames = await getComponentNames(page);
      test.skip(componentNames.length === 0, 'No components available');

      console.log(`Measuring load times for ${componentNames.length} components`);

      // Measure load time for first component
      const firstComponentName = componentNames[0];
      const component = page.locator('.lazy-component-wrapper, .dynamic-component-wrapper').filter({
        hasText: firstComponentName,
      });
      const loadBtn = component.locator('.load-btn, .load-component-btn');

      if ((await loadBtn.count()) > 0) {
        const startTime = Date.now();
        await loadBtn.click();

        const loaded = await waitForComponentLoad(page, firstComponentName, 10000);
        const loadTime = Date.now() - startTime;

        console.log(`Component "${firstComponentName}" loaded in ${loadTime}ms`);

        if (loaded) {
          console.log(`✓ Component loaded successfully in ${loadTime}ms`);
        }
      }
    });

    test('should track performance metrics', async ({ page }) => {
      const metrics = await getPerformanceMetrics(page);

      console.log('Performance Metrics:', JSON.stringify(metrics, null, 2));

      // Log all available metrics
      if (metrics.firstPaint !== null) {
        console.log(`✓ First Paint: ${metrics.firstPaint.toFixed(2)}ms`);
      }

      if (metrics.firstContentfulPaint !== null) {
        console.log(`✓ First Contentful Paint: ${metrics.firstContentfulPaint.toFixed(2)}ms`);
      }

      if (metrics.domContentLoaded !== null) {
        console.log(`✓ DOM Content Loaded: ${metrics.domContentLoaded.toFixed(2)}ms`);
      }

      if (metrics.loadComplete !== null) {
        console.log(`✓ Load Complete: ${metrics.loadComplete.toFixed(2)}ms`);
      }

      if (metrics.wasmInitTime !== null) {
        console.log(`✓ WASM Init Time: ${metrics.wasmInitTime.toFixed(2)}ms`);
      }
    });

    test('should measure bundle optimization impact', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasBundleAnalysis, 'Bundle analysis not available');

      const bundleInfo = await getBundleSizeInfo(page);

      if (bundleInfo && bundleInfo.initialBundle) {
        console.log('Bundle optimization metrics:');
        console.log(`  - Initial bundle: ${bundleInfo.initialBundle}`);
        console.log(`  - Loaded components: ${bundleInfo.loadedComponents}`);
        console.log(`  - Total size: ${bundleInfo.totalSize}`);
        console.log(`  - Optimization: ${bundleInfo.optimization}`);

        // Calculate potential savings
        if (bundleInfo.loadedComponents > 0 && bundleInfo.totalSize) {
          const avgSize = parseFloat(bundleInfo.totalSize) / bundleInfo.loadedComponents;
          console.log(`  - Average component size: ${avgSize.toFixed(2)}KB`);
        }
      }
    });
  });

  test.describe('Accessibility with Feature Detection', () => {
    test('should have proper ARIA labels with feature detection', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      // Check for ARIA labels on interactive elements
      const loadButtons = page.locator('.load-btn, .load-component-btn');
      const favoriteButtons = page.locator('.favorite-btn, .favorite-toggle');

      const loadButtonCount = await loadButtons.count();
      const favoriteButtonCount = await favoriteButtons.count();

      console.log(`Found ${loadButtonCount} load buttons and ${favoriteButtonCount} favorite buttons`);

      if (loadButtonCount > 0) {
        // Check first load button for ARIA attributes
        const firstLoadBtn = loadButtons.first();
        const ariaLabel = await firstLoadBtn.getAttribute('aria-label');
        const role = await firstLoadBtn.getAttribute('role');

        console.log(`Load button ARIA: label="${ariaLabel}", role="${role}"`);
      }

      if (favoriteButtonCount > 0) {
        // Check first favorite button for ARIA attributes
        const firstFavoriteBtn = favoriteButtons.first();
        const ariaLabel = await firstFavoriteBtn.getAttribute('aria-label');
        const ariaPressed = await firstFavoriteBtn.getAttribute('aria-pressed');

        console.log(`Favorite button ARIA: label="${ariaLabel}", pressed="${ariaPressed}"`);
      }
    });

    test('should support keyboard navigation', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      const interactiveElements = page.locator('button, [role="button"], select, input');
      const count = await interactiveElements.count();

      console.log(`Found ${count} interactive elements`);

      if (count > 0) {
        // Test Tab navigation
        const firstElement = interactiveElements.first();
        await firstElement.focus();
        const focusedElement = page.locator(':focus');
        await expect(focusedElement).toBeVisible();
        console.log('✓ Keyboard navigation works');
      }
    });

    test('should announce loading states to screen readers', async ({ page }) => {
      const features = await detectLoadingFeatures(page);

      test.skip(!features.hasLazyLoadingUI && !features.hasDynamicLoaderUI, 'No loading UI available');

      // Check for ARIA live regions
      const liveRegions = page.locator('[aria-live], [role="status"], [role="progressbar"]');
      const count = await liveRegions.count();

      console.log(`Found ${count} ARIA live regions for loading states`);

      if (count > 0) {
        for (let i = 0; i < Math.min(count, 5); i++) {
          const region = liveRegions.nth(i);
          const live = await region.getAttribute('aria-live');
          const role = await region.getAttribute('role');
          console.log(`  Live region ${i}: aria-live="${live}", role="${role}"`);
        }
      }
    });
  });

  test.describe('Comprehensive Integration Test', () => {
    test('should complete full loading workflow with feature detection', async ({ page }) => {
      const features = await detectLoadingFeatures(page);
      const capabilities = await detectBrowserCapabilities(page);
      const wasmFeatures = await detectWASMFeatures(page);

      console.log('=== Environment ===');
      console.log('Browser Capabilities:', JSON.stringify(capabilities, null, 2));
      console.log('WASM Features:', JSON.stringify(wasmFeatures, null, 2));
      console.log('Loading Features:', JSON.stringify(features, null, 2));

      console.log('\n=== Performance Metrics ===');
      const metrics = await getPerformanceMetrics(page);
      console.log(JSON.stringify(metrics, null, 2));

      console.log('\n=== Components ===');
      const componentNames = await getComponentNames(page);
      console.log(`Total components: ${componentNames.length}`);
      console.log('Component names:', componentNames.slice(0, 10).join(', '));

      if (componentNames.length > 10) {
        console.log(`... and ${componentNames.length - 10} more`);
      }

      console.log('\n=== Categories ===');
      const categories = await getComponentCategories(page);
      console.log(`Total categories: ${categories.length}`);
      console.log('Categories:', categories.join(', '));

      console.log('\n=== Bundle Information ===');
      const bundleInfo = await getBundleSizeInfo(page);
      if (bundleInfo) {
        console.log(JSON.stringify(bundleInfo, null, 2));
      } else {
        console.log('Bundle information not available');
      }

      // Final verification
      console.log('\n=== Verification ===');
      const isWasmReady = await isWASMInitialized(page);
      console.log(`WASM Initialized: ${isWasmReady}`);
      expect(isWasmReady).toBe(true);

      const headerVisible = await page.locator('h1').first().isVisible();
      console.log(`App Header Visible: ${headerVisible}`);
      expect(headerVisible).toBe(true);

      console.log('\n✓ Comprehensive integration test completed successfully');
    });
  });
});