exports.handler = async function(context, event, callback) {
  const response = new Twilio.Response();

  const discordPath = Runtime.getFunctions()['common/discord'].path;
  const discord = require(discordPath);

  let msg = event.msg;

  if (event.json && event.json != "undefined") {
    try {
      const fingerprint = JSON.parse(event.json);
      msg += `\`\`\`# Unlocked by\n${JSON.stringify(fingerprint, null, 4)}\`\`\``;
    } catch (e) {
      msg += `\`\`\`# Unlocked by\n# WARN: Unknown or corrupt raw fingerprint:\n ${event.json}\`\`\``;
    }
  }

  // user must be in "Doorman" server
  await discord.sendMessageToUser(context, 
    event.discordUser,
    msg,
  ).catch((e) => console.error(e));

  return callback(null, response);
};