JavaScript API Request Authentication with Timestamp and MD5 Hash

This code snippet adds authorization headers to a request configuration. It first retrieves the current timestamp using Date.now() and obtains a token using the getToken() function. If a token is present, it combines the token with the timestamp using a '$' separator and generates an MD5 hash of the concatenated string. Finally, it sets the 'Authorization', 'sign', and 'timespan' headers in the configuration object with the token, MD5 hash, and timestamp values respectively.

const timestamp = Date.now()
const token = getToken()
if (token) {
  const sign = getToken() + '$' + timestamp

  config.headers['Authorization'] = 'Bearer ' + getToken()
  config.headers['sign'] = MD5(Base64.stringify(Utf8.parse(sign)))
    .toString()
    .toUpperCase()
  config.headers['timespan'] = timestamp
}

The purpose of this code is to provide authentication and authorization for API requests. By utilizing a timestamp, token, and MD5 hash, it ensures that only authorized users with valid tokens can access the requested resources. This helps prevent unauthorized access and enhances the security of the API.