// AI Directory Platform — 站点 Next.js 配置工厂
// 说明：站点 next.config.mjs 只需 `export { createSiteConfig as default } from "@aidir/core/next-config"`
//      MDX/intl/turbopack 等构建依赖由底座包解析，站点零构建依赖。
import fs from "node:fs";
import path from "node:path";

import nextMDX from "@next/mdx";
import createNextIntlPlugin from "next-intl/plugin";


/**
 * # 函数 createSiteConfig
 * 说明：底座统一的站点 Next 配置（next-intl + MDX + 图片域名 + standalone）。
 * 参数：opts.requestPath 站点 i18n request 文件相对路径
 * 返回值：完整 Next 配置
 */
export function createSiteConfig({
  requestPath = "./src/i18n/request.ts",
} = {}) {
  const withNextIntl = createNextIntlPlugin(requestPath);

  /** @type {import('next').NextConfig} */
  const nextConfig = {
    output: "standalone",
    poweredByHeader: false,
    transpilePackages: ["@aidir/core"],
    // 静态生成 worker 上限：每个 worker 各持 DB 连接池，并发过高会把
    // PostgreSQL 的 max_connections 打满（"sorry, too many clients already"）
    experimental: {
      cpus: 8,
    },
    // 安全响应头：防点击劫持 / MIME 嗅探 / 引用泄漏，权限收敛
    async headers() {
      return [
        {
          source: "/(.*)",
          headers: [
            { key: "X-Frame-Options", value: "SAMEORIGIN" },
            { key: "X-Content-Type-Options", value: "nosniff" },
            {
              key: "Referrer-Policy",
              value: "strict-origin-when-cross-origin",
            },
            {
              key: "Permissions-Policy",
              value:
                "camera=(), microphone=(), geolocation=(), interest-cohort=()",
            },
          ],
        },
      ];
    },
    images: {
      // 工具 logo 指向各官网 favicon，域名不可枚举，放开 https 通配
      remotePatterns: [{ protocol: "https", hostname: "**" }],
    },
    pageExtensions: ["ts", "tsx", "mdx"],
  };

  const withMDX = nextMDX({
    extension: /\.mdx?$/,
    options: {
      // Turbopack 要求 loader options 可序列化：插件用模块路径字符串,
      // 由 @next/mdx 16 的 loader 在构建时动态 import(@mdx-js/loader 支持)
      remarkPlugins: ["remark-gfm"],
      rehypePlugins: ["@mapbox/rehype-prism"],
    },
  });

  return withNextIntl(withMDX(nextConfig));
}

export default createSiteConfig;