Linebotでmultiple-sendをする場合.js

var express = require('express');
var router = express.Router();
var request = require('request');

const headers = {
  'Content-Type' : 'application/json; charset=UTF-8',
  'X-Line-ChannelID' : '<Channel ID>',
  'X-Line-ChannelSecret' : '<Channel Secret>',
  'X-Line-Trusted-User-With-ACL' : '<MID>'
};

const options = {
  url: 'https://trialbot-api.line.me/v1/events',
  proxy: process.env.FIXIE_URL,
  headers: headers,
  json: true,
  body: null
};

router.post('/callback', function(req, res, next) {
  var json = req.body;

  var text = json['result'][0]['content']['text'];
  var from = [json['result'][0]['content']['from']];
  
  options.body = {
    'to': from,
    'toChannel': 1383378250, // fixed
    'eventType':'140177271400161403', // fixed, for multiple messages
    'content': {
      "messageNotified": 0,
      "messages": [
        // text
        {
          'contentType': 1,
          'toType': 1,
          'text': '＼(^o^)／'
        },
        // stamp
        {
          'contentType': 8,
          'toType': 1,
          'contentMetadata':{
            'STKID':'100',
            'STKPKGID':'1',
            'STKVER':'100'
          }
        },
        // image
        {
          'contentType': 2,
          'toType': 1,
          'originalContentUrl': 'http://hisasann.com/img/notechnonolife_character.jpeg',
          'previewImageUrl': 'http://hisasann.com/img/notechnonolife_character.jpeg'
        }
      ]
    }
  };
  request.post(options, function (error, response, body) {
    if (!error && response.statusCode == 200) {
      console.log(body);
    } else {
      console.log('error: '+ JSON.stringify(response));
    }
  });
});

module.exports = router;