node-red-contrib-motechat/send/send.js

ultranet topic and payload communication

module.exports = function(RED) {
    "use strict"
    let sender = {
        send: require('../lib/mcClient.js').send
    }
    let getDDN = require('../lib/mcClient.js').getDDN
    let debug = require('../lib/mcClient.js').debug
    let isReg = require('../lib/mcClient.js').isRegist
    function send(config) {
        RED.nodes.createNode(this, config)
        let node = this

        node.name = config.name
        node.on('input', (msg, send, done) => {
            let { t1, t2 } = msg
            send = send || function() { node.send.apply(node, arguments) }
            let DDN = RED.util.evaluateNodeProperty(config.DDN, config.DDNType, node, msg)
            DDN = Array.isArray(DDN) ? DDN : [DDN]
            DDN = DDN.filter(item => item)
            let topic = RED.util.evaluateNodeProperty(config.topic, config.topicType, node, msg)
            let tarList = DDN
            let length = tarList.length
            if (isReg()){
                tarList.forEach((target, index) => {
                    sender.send(topic, target, { t1, t2 }, msg.payload).then(reply => {
                        let newMsg = Object.assign(msg, {
                            hostDDN: getDDN(),
                            name: node.name,
                            payload: reply,
                            topic: topic,
                            subject: node.subject
                        })

                        send([newMsg, null])
                    }).catch(err => send([null, err]))

                    if (length == index && done) done()
                })

                if(!tarList.length) {
                    sender.send(topic, '', { t1, t2 }, msg.payload).then(reply => {
                        let newMsg = Object.assign(msg, {
                            hostDDN: getDDN(),
                            name: node.name,
                            payload: reply,
                            topic: topic,
                            subject: node.subject
                        })

                        send([newMsg, null])
                    }).catch(err => send([null, err]))

                    if(done) done()
                }
            }
            else{
                send([null, "Motechat hasn't registered!"])
                debug("Motechat hasn't registered!")
            }
        })
    }
    RED.nodes.registerType("send", send)
}