LINE Messaging API - Broadcast JS

line-broadcast.js

const functions = require('firebase-functions');
const request = require('request-promise');

const LINE_MESSAGING_API = 'https://api.line.me/v2/bot/message';
const LINE_HEADER = {
  'Content-Type': 'application/json',
  'Authorization': `Bearer xxxxx`
};

exports.LineBotBroadcast = functions.https.onRequest((req, res) => {
  const text = req.query.text;
  if (text !== undefined && text.trim() !== ``) {
    return broadcast(res, text);
  } else {
    const ret = { message: 'Text not found' };
    return res.status(400).send(ret);
  }
});

const broadcast = (res, msg) => {
  return request({
    method: `POST`,
    uri: `${LINE_MESSAGING_API}/broadcast`,
    headers: LINE_HEADER,
    body: JSON.stringify({
      messages: [
        {
          type: `text`,
          text: msg
        }
      ]
    })
  }).then(() => {
    const ret = { message: 'Done' };
    return res.status(200).send(ret);
  }).catch((error) => {
    const ret = { message: `Sending error: ${error}` };
    return res.status(500).send(ret);
  });
}