const zlib = require('zlib');
const response = "{}"

exports.handler = (event, context, callback) => {
  if (event.headers['Accept-Encoding'].contains("gzip")) {
    zlib.gzip(response, function(error, gzippedResponse) {
      if (error) callback(error);
      else callback(null, {
        "body": gzippedResponse.toString("base64"),
        "isBase64Encoded": true,
        "statusCode": 200,
        "headers": {
          "Content-Encoding": "gzip"
        }
      });
    }
  }
  else callback(null, {
    "body": response,
    "statusCode": 200,
    "headers": {}
  });
}