WIKIPEDIA MassPusher.js

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const async = require("async");
const triggerPush = require("../services/push.service");

class MassPusher{
    
    constructor(listOfTokens,pushData){
        this.pushData=pushData;
        this.success_tokens=[];
        this.failure_tokens=[];
        this.invokeOperation(listOfTokens);
    }
   
    invokeOperation = (listOfTokens) => {
        async.each(listOfTokens,this.sendMassPush,(err,info)=>{
            if(err)
                console.log(this.failure_tokens,'error');
            else
                console.log(this.success_tokens,'success');
        });
    }

sendMassPush = (token, callback) =>{

this.pushData.to = token;

async.waterfall([
            (callback)=>{
                triggerPush(this.pushData)
                .then(()=>{
                    this.success_tokens.push(token);
                    callback();
                })
                .catch(()=>{
                    this.failure_tokens.push(token);
                    callback();
                })
            }
        ],
        function (){
            callback();
        })
        
    }
}

module.exports = MassPusher;