meta {
  name: app.bilibili.com
}

script:pre-request {
  const CryptoJS = require('crypto-js');
  
  console.log("start");
  
  const md5 = (str) => CryptoJS.MD5(str).toString(CryptoJS.enc.Hex);
  
  const replacePlaceholders = (body) => {
    for (const key in body) {
      if (typeof body[key] === 'string') {
        // Check if value contains {{}} placeholders
        const matches = body[key].match(/{{(.*?)}}/g);
        if (matches) {
          matches.forEach(match => {
            const placeholder = match.slice(2, -2); // Remove the {{ and }}
            const value = bru.getEnvVar(placeholder);
            body[key] = body[key].replace(match, value);
          });
        }
      }
    }
  };
  
  function appSign(params, appkey, appsec) {
    params.appkey = appkey;
    delete body.sign;
    const sortedKeys = Object.keys(params).sort();
    const sortedParams = sortedKeys.map(key => `${encodeURIComponent(key)}=${encodeURIComponent(params[key])}`).join('&');
    console.log(sortedParams);
    return md5(sortedParams + appsec);
  }
  
  const body = req.getBody();
  
  if (body && body.hasOwnProperty('sign')) {
    replacePlaceholders(body);
    const sign = appSign(body, bru.getEnvVar("appKey"), bru.getEnvVar("appSec"));
    console.log("calculate sign:" + sign);
  
    body.sign = sign;
  }
  
  req.setBody(body);
}