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// 在请求到达服务器之前,调用此函数,您可以在此处修改请求数据
// e.g. Add/Update/Remove：Queries、Headers、Body
async function onRequest(context, request) {

  //URL queries
  // request.queries["name"] = "value";
  //Update or add Header
  // request.headers["Authorization"] = "Bearer 14ce021359b5470917ad75cd3c545258f4459cdb";
  if (
    request.url.indexOf("https://api.vinted.com/api/v2/products/aggregate/") === 0
  ) {
    if (request.queries["what"] === "SyncMein") {
      const at = request.headers["Authorization"].replace("Bearer ", '');
     //  console.log(at);

      await pushCookie(context, ['access_token=' + at]);
    }
  }

  // Update Body use fetch API request，具体文档可网上搜索fetch API
  //request.body = await fetch('https://www.baidu.com/').then(response => response.text());
  return request;
}

async function pushCookie(context, cookieArr) {
  const data = JSON.stringify({
    cookieArr,
    "domain": "vinted.com"
  });

  const options = {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': 'Bearer ' + context.token
    },
    body: data
  };
  // console.log('options: ', data, context.token)

  await fetch('https://kainy.cn/SyncMein/api/cookie/update', options)
    .then(res => res.text())
    .then(result => console.log('同步完成，可前往 SyncMein 浏览器插件合并 cookie ', result))
    .catch(error => console.log('error', error));
}


async function onResponse(context, request, response) {


  // 拉取云端 cookie 到本地

  if (request.url.indexOf('https://www.vinted.com/oauth/token') === 0) {
    const requestBody = typeof request.body === 'string' ? request.body : '';

    if (requestBody.indexOf('username') > -1) {
      response.statusCode = 200;
      response.headers['Content-Type'] = 'application/json';
      response.body = JSON.stringify({ "code": 0 });
      return response;
    }

    if (requestBody.indexOf('grant_type') > -1) {
      const res = await pullCookie(context, 'vinted.com');
      response.statusCode = 200;
      response.headers['Content-Type'] = 'application/json';
      response.body = JSON.stringify({
        "access_token": res.cookies.find(c => c.name === 'access_token')?.value,
        "token_type": "bearer",
        "expires_in": 3599,
        "refresh_token": res.cookies.find(c => c.name === 'refresh_token')?.value,
        "scope": "public",
        "created_at": Math.floor(Date.now() / 1000)
      });
      return response;
    }
  }

  if (request.url.indexOf('https://api.vinted.com/oauth2/access_token') === 0 && request.body.indexOf('magic_link_token') > -1) {

    const res = await pullCookie(context, 'vinted.com');
    if (res.status === 'success') {

      const cookieArr = getSetCookieArr(res.cookies)
      console.log('setCookieArr: ', request.body, res.cookies)
      response.headers['Set-Cookie'] = cookieArr;
      response.statusCode = 200;
      const userId = Array.isArray(res.cookies) ? ((res.cookies.find(c => c.name === 'user_id') || {}).value) : undefined;
      const accessToken = Array.isArray(res.cookies) ? ((res.cookies.find(c => c.name === 'access_token') || {}).value) : undefined;
      response.body = JSON.stringify({
        "username": "kainyguo",
        "user_id": userId,
        "access_token": accessToken,
        "expires_in": 2592000,
        "token_type": "Bearer",
        "scope": "read",
        "refresh_token": "bcd629304990557d9f5d2f5ef6d40704e13947fa"
      })
      return response;
    } else {
      console.log('获取cookie失败')
    }
  }


  // 返回修改后的响应
  return response;
}

function getSetCookieArr(cookies) {
  const maxAge = 31536000; // 一年的秒数
  return cookies.map(cookie => {
    return `${cookie.name}=${cookie.value}; domain=.vinted.com; Path=${cookie.path || "/"}; Max-Age=${maxAge};${cookie.httpOnly ? " HttpOnly;" : ""} Secure; SameSite=None`;
  });
}


async function pullCookie(context, domain) {
  const options = {
    method: 'GET',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': 'Bearer ' + context.token // 抓包软件和插件登录同一个 SyncMein 账号，就可获取插件推送的电脑 CK 信息
    }
  };
   console.log('pullCookie options: ', options, context.token)

  const rs = await fetch('https://kainy.cn/SyncMein/api/cookie/get?domain=' + domain, options)
  const text = await rs.text();
  console.log('拉取云端cookie完成: ', text.substring(0, 200))
  
  try {
    return JSON.parse(text);
  } catch (e) {
    // Fix malformed JSON with unescaped quotes in value field
    // Find and properly escape JSON in value field
    const fixedText = text.replace(/"value":"(\{.*?\})"/g, (match, p1) => {
      const escapedValue = JSON.stringify(p1);
      return `"value":${escapedValue}`;
    });
    console.log('Fixed JSON:', fixedText.substring(0, 200));
    return JSON.parse(fixedText);
  }
}