ICGLabelServer/ICGLabelClient.js

const WebSocket = require('ws');
var exec = require('child_process').exec;
const fs = require("fs");
var whoami;
try{
        var tempObj  = fs.readFileSync('whoami');
          tempRead = JSON.parse(tempObj);
          whoami = tempRead.Name;
          console.log("I am '" + whoami + "'");
} catch (e) {
	console.log("I could not open whoami, I'm going to exit");
    process.exit();
}


var ws;

var wsConnect = function(){
  ws =  new WebSocket('ws://10.10.10.2:8080/');
  ws.on('open', function open() {
      console.log("connected");
  })

  ws.on('message', function incoming(data, flags) {
        console.log("Received : " + data);
        try{
                myObj = JSON.parse(data);
                console.log(myObj);
                console.log(myObj.labelSource);
                if(whoami == myObj.who){
                        console.log("I am " + whoami + ", this message was for me");
                        if(myObj.label){
                                fs.writeFileSync('internetShipLabel.zpl', myObj.label);
                                printLabel('internetShipLabel.zpl');
                        }
                }else{
                        console.log("this Message was not for me");
                }

        } catch(e){console.log(e);}
  })

  ws.on('error', function(error){
        console.log('Connection Error: ' + error.toString());
        //process.exit();
  });

  ws.on('close', function() {
        console.log('socket close');
        setTimeout(wsConnect, 30*1000);
  });
}

function printLabel(filename){
    console.log('trying to print');
        exec('cat ' + filename + ' > /dev/usb/lp0', function(error, stdout, stderr) {
        });
}


wsConnect();