prisme-flow/nodes/bridge/bot/bot-qr-code.js

prisme platform flow engine

/**
 * Created by prisme.io on 09/06/2017.
 */

var qr = require('qr-image')
var MessageTemplate = require('./lib/message-template.js')

module.exports = function (RED) {
  function BotQRCode (config) {
    RED.nodes.createNode(this, config)
    var node = this
    this.message = config.message

    this.on('input', function (msg) {
      var message = node.message
      var originalMessage = msg.originalMessage
      var chatId = msg.payload.chatId || (originalMessage && originalMessage.chat.id)
      var messageId = msg.payload.messageId || (originalMessage && originalMessage.message_id)
      var template = MessageTemplate(msg, node)

      var buffer = qr.imageSync(template(message))

      // send out the picture with the qr
      msg.payload = {
        type: 'photo',
        content: buffer,
        // filename: '',
        chatId: chatId,
        messageId: messageId,
        inbound: false
      }

      node.send(msg)
    })
  }
  RED.nodes.registerType('bot-qrcode', BotQRCode)
}