export default {
  async fetch(request, env) {
    const url = new URL(request.url);

    // API 代理
    if (url.pathname.startsWith('/admin-api')) {
      const targetUrl = `https://apidev.ifoodme.com${url.pathname}${url.search}`;

      const headers = new Headers(request.headers);
      headers.delete('host');

      const response = await fetch(targetUrl, {
        method: request.method,
        headers: headers,
        body: request.method !== 'GET' && request.method !== 'HEAD' ? request.body : undefined,
        redirect: 'follow',
      });

      const responseHeaders = new Headers(response.headers);
      responseHeaders.set('Access-Control-Allow-Origin', '*');
      responseHeaders.set('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
      responseHeaders.set('Access-Control-Allow-Headers', 'Content-Type, Authorization, tenant-id');

      if (request.method === 'OPTIONS') {
        return new Response(null, { status: 204, headers: responseHeaders });
      }

      return new Response(response.body, {
        status: response.status,
        statusText: response.statusText,
        headers: responseHeaders,
      });
    }

    // 静态资源请求 - 使用 env.ASSETS
    return env.ASSETS.fetch(request);
  },
};