import type { NextConfig } from "next";

function resolvePascalEditorFrameSource() {
  const rawUrl = (
    process.env.NEXT_PUBLIC_PASCAL_EDITOR_URL ||
    process.env.PASCAL_EDITOR_URL ||
    ""
  ).trim();
  if (!rawUrl || rawUrl.startsWith("/")) {
    return null;
  }

  try {
    const url = new URL(rawUrl);
    return url.protocol === "http:" || url.protocol === "https:"
      ? url.origin
      : null;
  } catch {
    return null;
  }
}

function resolvePascalEditorFrameSources(isDev: boolean) {
  const sources = ["'self'", resolvePascalEditorFrameSource()];
  if (isDev) {
    sources.push("http://localhost:3002", "http://127.0.0.1:3002");
  }
  return sources.filter(Boolean).join(" ");
}

const nextConfig: NextConfig = {
  distDir: process.env.NEXT_DIST_DIR?.trim() || ".next",
  poweredByHeader: false,
  allowedDevOrigins: ["127.0.0.1"],
  // 禁用 cacheComponents 以支持 dynamic = "force-dynamic"
  // cacheComponents: true,
  // 外部包配置（Next.js 16+）
  serverExternalPackages: ["sharp"],
  transpilePackages: ["@sparkjsdev/spark"],
  typescript: {
    ignoreBuildErrors: process.env.NEXT_IGNORE_BUILD_TYPECHECK === "1",
  },
  // 实验性功能：增加代理请求体大小限制以支持大文件上传（视频等）
  experimental: {
    proxyClientMaxBodySize: "500mb", // 代理/中间件请求体限制
  },
  images: {
    dangerouslyAllowLocalIP: false,
    contentDispositionType: "attachment",
    remotePatterns: [
      {
        hostname: "avatar.vercel.sh",
      },
      {
        protocol: "https",
        //https://nextjs.org/docs/messages/next-image-unconfigured-host
        hostname: "*.public.blob.vercel-storage.com",
      },
      {
        // 支持 HTTP 协议的 MinIO / S3（本地或内网部署）
        protocol: "http",
        hostname: "**", // 允许所有 HTTP 域名（MinIO 等）
      },
      {
        // 支持 HTTPS 协议的 S3 / MinIO（公网部署）
        protocol: "https",
        hostname: "**", // 允许所有 HTTPS 域名
      },
    ],
  },
  // HTTP 安全头
  async headers() {
    const isDev = process.env.NODE_ENV === "development";
    const frameSources = resolvePascalEditorFrameSources(isDev);
    const csp = [
      "default-src 'self'",
      // Next.js App Router/RSC emits inline bootstrap scripts in production.
      // WebAssembly is required by in-browser 3D decoders (Spark SPZ, KTX2/Basis).
      `script-src 'self' 'unsafe-inline' 'wasm-unsafe-eval'${isDev ? " 'unsafe-eval'" : ""}`,
      // Next.js 需要 unsafe-inline 用于样式 (CSS-in-JS / Tailwind)
      "style-src 'self' 'unsafe-inline'",
      "img-src 'self' data: blob: https: http:",
      "font-src 'self' data:",
      // Spark bundles its WASM decoder as a data: URL and initializes it via fetch().
      "connect-src 'self' data: https: wss:",
      "media-src 'self' blob: https:",
      `frame-src ${frameSources}`,
      "worker-src 'self' blob:",
      "object-src 'none'",
      "base-uri 'self'",
      "form-action 'self'",
    ].join("; ");

    return [
      {
        source: "/(.*)",
        headers: [
          { key: "X-Content-Type-Options", value: "nosniff" },
          { key: "X-Frame-Options", value: "SAMEORIGIN" },
          {
            key: "Strict-Transport-Security",
            value: "max-age=31536000; includeSubDomains; preload",
          },
          { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
          {
            key: "Permissions-Policy",
            value: "camera=(), microphone=(), geolocation=()",
          },
          { key: "Content-Security-Policy", value: csp },
        ],
      },
      // 对需要嵌入的页面放宽 frame 限制
      {
        source: "/worlds/share/:path*",
        headers: [
          {
            key: "X-Frame-Options",
            value: "ALLOW-FROM https://www.risesail.com",
          },
        ],
      },
    ];
  },

  async redirects() {
    return [
      {
        source: "/favicon.ico",
        destination: "/api/favicon",
        permanent: false,
      },
      {
        source: "/apple-touch-icon.png",
        destination: "/api/favicon",
        permanent: false,
      },
    ];
  },
};

export default nextConfig;