/* eslint-env node */
import bundleAnalyzer from "@next/bundle-analyzer";

const withBundleAnalyzer = bundleAnalyzer({
  enabled: process.env.ANALYZE === "true",
});

import path from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Enable standalone output only for production deployment
  output: process.env.NODE_ENV === "production" ? "standalone" : undefined,

  // Ensure workspace packages are transpiled correctly
  transpilePackages: ["@customer-portal/domain", "@customer-portal/validation"],

  // Tell Next to NOT bundle these server-only libs
  serverExternalPackages: [
    "pino",
    "pino-pretty",
    "pino-abstract-transport",
    "thread-stream",
    "sonic-boom",
    // Avoid flaky vendor-chunk resolution during dev for small utils
    "tailwind-merge",
  ],

  // Turbopack configuration (Next.js 15.5+)
  // Note: public turbopack options are limited; aliasing is handled via tsconfig/webpack resolutions

  // Environment variables validation
  env: {
    NEXT_PUBLIC_API_BASE: process.env.NEXT_PUBLIC_API_BASE,
    NEXT_PUBLIC_APP_NAME: process.env.NEXT_PUBLIC_APP_NAME,
    NEXT_PUBLIC_APP_VERSION: process.env.NEXT_PUBLIC_APP_VERSION,
  },

  // Image optimization
  images: {
    remotePatterns: [
      {
        protocol: "https",
        hostname: "**",
      },
    ],
  },

  // Disable ESLint blocking during production builds to avoid CI/CD failures
  eslint: {
    ignoreDuringBuilds: true,
  },

  // Security headers
  async headers() {
    return [
      {
        // Apply security headers to all routes
        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",
          },
          // Content Security Policy - development-friendly
          {
            key: "Content-Security-Policy",
            value:
              process.env.NODE_ENV === "development"
                ? "default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https: http://localhost:* ws://localhost:*; frame-ancestors 'none';"
                : [
                    "default-src 'self'",
                    "script-src 'self'",
                    "style-src 'self'",
                    "img-src 'self' data: https:",
                    "font-src 'self' data:",
                    "connect-src 'self'",
                    "frame-ancestors 'none'",
                  ].join("; "),
          },
        ],
      },
    ];
  },

  // Production optimizations
  compiler: {
    // Remove console.logs in production
    removeConsole: process.env.NODE_ENV === "production",
  },

  // Experimental flags
  experimental: {
    externalDir: true,
    optimizePackageImports: ["@heroicons/react", "lucide-react", "@tanstack/react-query"],
  },

  webpack(config) {
    const workspaceRoot = path.resolve(__dirname, "..", "..");
    config.resolve.alias = {
      ...config.resolve.alias,
      "@customer-portal/domain": path.join(workspaceRoot, "packages/domain"),
      "@customer-portal/validation": path.join(workspaceRoot, "packages/validation/src"),
    };
    const preferredExtensions = [".ts", ".tsx", ".mts", ".cts"];
    const existingExtensions = config.resolve.extensions || [];
    config.resolve.extensions = [...new Set([...preferredExtensions, ...existingExtensions])];
    config.resolve.extensionAlias = {
      ...(config.resolve.extensionAlias || {}),
      ".js": [".ts", ".tsx", ".js"],
      ".mjs": [".mts", ".ts", ".tsx", ".mjs"],
    };
    config.module.rules.push({
      test: /packages\/domain\/.*\.js$/,
      type: "javascript/esm",
    });
    return config;
  },

  // Keep type checking enabled; monorepo paths provide types
  typescript: { ignoreBuildErrors: false },

  // Prefer Turbopack; no custom webpack override needed
};

export default withBundleAnalyzer(nextConfig);