/** @type {import('next').NextConfig} */
const nextConfig = {
  output: 'standalone',
  experimental: {
    appDir: true,
  },
  
  // Environment variables
  env: {
    NEXT_PUBLIC_API_URL: process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001',
    NEXT_PUBLIC_WS_URL: process.env.NEXT_PUBLIC_WS_URL || 'ws://localhost:3001',
    NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY: process.env.NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY,
    NEXT_PUBLIC_GOOGLE_CLIENT_ID: process.env.NEXT_PUBLIC_GOOGLE_CLIENT_ID,
  },

  // Image configuration for external sources
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: 'lh3.googleusercontent.com',
        port: '',
        pathname: '/a/**',
      },
      {
        protocol: 'http',
        hostname: 'localhost',
        port: '3001',
        pathname: '/api/images/**',
      },
    ],
    dangerouslyAllowSVG: true,
    contentSecurityPolicy: "default-src 'self'; script-src 'none'; sandbox;",
  },

  // Headers for security
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: [
          {
            key: 'X-Frame-Options',
            value: 'DENY',
          },
          {
            key: 'X-Content-Type-Options',
            value: 'nosniff',
          },
          {
            key: 'Referrer-Policy',
            value: 'strict-origin-when-cross-origin',
          },
          {
            key: 'X-XSS-Protection',
            value: '1; mode=block',
          },
        ],
      },
    ];
  },

  // Rewrites for API proxy in development
  async rewrites() {
    if (process.env.NODE_ENV === 'development') {
      return [
        {
          source: '/api/:path*',
          destination: `${process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3001'}/api/:path*`,
        },
      ];
    }
    return [];
  },

  // Webpack configuration
  webpack: (config, { dev, isServer }) => {
    // Optimization for production
    if (!dev && !isServer) {
      config.optimization.splitChunks.cacheGroups = {
        ...config.optimization.splitChunks.cacheGroups,
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendors',
          chunks: 'all',
          priority: 10,
        },
        common: {
          name: 'common',
          minChunks: 2,
          chunks: 'all',
          priority: 5,
          reuseExistingChunk: true,
        },
      };
    }

    return config;
  },

  // TypeScript configuration
  typescript: {
    ignoreBuildErrors: false,
  },

  // ESLint configuration
  eslint: {
    ignoreDuringBuilds: false,
  },

  // Compression and optimization
  compress: true,
  poweredByHeader: false,
  generateEtags: true,

  // Redirects
  async redirects() {
    return [
      {
        source: '/dashboard',
        destination: '/',
        permanent: false,
        has: [
          {
            type: 'cookie',
            key: 'authenticated',
            value: undefined,
          },
        ],
      },
    ];
  },
};

module.exports = nextConfig;