import { defineConfig, devices } from '@playwright/test';
import { execSync } from 'child_process';

/**
 * Playwright configuration for website smoke tests
 *
 * Purpose: Verify all website pages load without runtime errors
 * Scope: Page rendering, console errors, React hydration
 *
 * Critical Detection:
 * - Console errors during page load
 * - React hydration mismatches
 * - Navigation failures
 * - Missing content
 *
 * IMPORTANT: This test requires Docker to run against real TypeORM/PostgreSQL
 */

// Enforce Docker usage
function validateDockerEnvironment(): void {
  // Skip validation if explicitly requested (for CI or advanced users)
  if (process.env.PLAYWRIGHT_SKIP_DOCKER_CHECK === 'true') {
    console.warn('⚠️  Skipping Docker validation - assuming services are running');
    return;
  }

  try {
    // Check if Docker is running
    execSync('docker info', { stdio: 'pipe' });
    
    // Check if the required Docker services are running
    const services = execSync('docker ps --format "{{.Names}}"', { encoding: 'utf8' });
    
    // Look for services that match our test pattern
    const testServices = services.split('\n').filter(s => s.includes('gridpilot-test'));
    
    if (testServices.length === 0) {
      console.error('❌ No test Docker services found running');
      console.error('💡 Please run: docker-compose -f docker-compose.test.yml up -d');
      console.error('   This will start:');
      console.error('   - PostgreSQL database');
      console.error('   - API server with TypeORM/PostgreSQL');
      console.error('   - Website server');
      process.exit(1);
    }
    
    // Check for specific required services (website runs locally, not in Docker)
    const hasApi = testServices.some(s => s.includes('api'));
    const hasDb = testServices.some(s => s.includes('db'));
    
    if (!hasApi || !hasDb) {
      console.error('❌ Missing required Docker services');
      console.error('   Found:', testServices.join(', '));
      console.error('   Required: api, db');
      console.error('💡 Please run: docker-compose -f docker-compose.test.yml up -d');
      process.exit(1);
    }
    
    console.log('✅ Docker environment validated');
  } catch (error) {
    console.error('❌ Docker is not available or not running');
    console.error('💡 Please ensure Docker is installed and running, then run:');
    console.error('   docker-compose -f docker-compose.test.yml up -d');
    console.error('');
    console.error('   Or skip this check with: PLAYWRIGHT_SKIP_DOCKER_CHECK=true npx playwright test');
    process.exit(1);
  }
}

// Run validation before config (unless in CI or explicitly skipped)
if (!process.env.CI && !process.env.PLAYWRIGHT_SKIP_DOCKER_CHECK) {
  validateDockerEnvironment();
}

export default defineConfig({
  testDir: './tests/e2e/website',
  testMatch: ['**/website-pages.test.ts'],
  testIgnore: ['**/electron-build.smoke.test.ts'],
  
  // Serial execution for consistent results
  fullyParallel: false,
  workers: 1,
  
  // Continue on errors to see all failures
  maxFailures: undefined,
  
  // Timeout: Pages should load quickly
  timeout: 30_000,
  
  // Base URL for the website (local dev server)
  use: {
    baseURL: process.env.PLAYWRIGHT_BASE_URL || 'http://localhost:3000',  // Local website dev server
    screenshot: 'only-on-failure',
    video: 'retain-on-failure',
    trace: 'retain-on-failure',
  },
  
  // Reporter: verbose for debugging
  reporter: [
    ['list'],
    ['html', { open: 'never' }]
  ],
  
  // No retry - smoke tests must pass on first run
  retries: 0,
  
  // Web server configuration
  // Start local Next.js dev server that connects to Docker API
  webServer: {
    command: 'npm run dev -w @gridpilot/website',
    url: 'http://localhost:3000',
    timeout: 120_000,
    reuseExistingServer: !process.env.CI,
    env: {
      NEXT_PUBLIC_API_BASE_URL: 'http://localhost:3101',
      API_BASE_URL: 'http://localhost:3101',
    },
  },
  
  // Browser projects
  projects: [
    {
      name: 'chromium',
      use: { ...devices['Desktop Chrome'] },
    },
  ],
});