import type { NextConfig } from "next";

const env = process.env.APP_ENV || "development";
const config: NextConfig = {
  output: "standalone",
  distDir:
    env === "production"
      ? ".next"
      : env === "test"
        ? ".next-test"
        : ".next-dev",
  poweredByHeader: false,
  // Go serves generated files without application compression; keep file byte lengths and ranges intact.
  // Public reverse proxies may apply the same transport compression used for the original Go service.
  compress: false,
  htmlLimitedBots: /.*/, // Keep complete SEO metadata in the initial HTML for every crawler/client.
  // Preserve source canonical redirects in proxy.ts before React rendering.
  skipTrailingSlashRedirect: true,
  skipProxyUrlNormalize: true,
  outputFileTracingIncludes: {
    "/*": [
      "./config/secrets/m3u8.key",
      "./template/pages/robots.txt",
      "./templates/pages/robots.txt",
      "./app/template/pages/robots.txt",
      "./app/templates/pages/robots.txt",
      "./config/seo/**/*",
    ],
  },
  // Keep XML out of page traces. package-standalone.ts also removes copies from Node Proxy traces.
  outputFileTracingExcludes: {
    "/*": [
      "./template/pages/sitemaps/**/*",
      "./template/pages/sitemap.xml",
      "./data/sitemaps/**/*",
    ],
  },
  async headers() {
    return [
      {
        source: "/sw.js",
        headers: [
          { key: "Content-Type", value: "application/javascript; charset=utf-8" },
          { key: "Cache-Control", value: "no-cache, no-store, must-revalidate" },
          { key: "Service-Worker-Allowed", value: "/" },
        ],
      },
      {
        source: "/static/:path*",
        headers: [
          {
            key: "Cache-Control",
            value: "public, max-age=604800, stale-while-revalidate=86400",
          },
        ],
      },
    ];
  },
};
export default config;