Simple-Updater/index.js

const fs = require("fs"),
path = require("path"),
shell = require("shelljs")

var configsPath = path.join(__dirname, "config")
var confPath = path.join(configsPath, "config.json")

if (!fs.existsSync(configsPath)) {
    fs.mkdirSync(configsPath)
}

if (!fs.existsSync(confPath)) {
    console.log("It would appear you have not created a config file yet! Generating one now.")
    fs.cpSync(path.join(__dirname, "defaults/config.json"), confPath)
    console.log("Done!")
}

var runningPrograms = {
    
}

var iterations = 0

function updateLoop() {
    iterations += 1
    
    var config = JSON.parse(fs.readFileSync(confPath))
    
    for (var i = 0; i < config.autoUpdates.length; i++) {
        var program = config.autoUpdates[i]
        var runningProgram = runningPrograms[program.name]

        function startProgram() {
            return shell.exec(`cd ${program.dir} && ${program.startCommand}`, { async: true }, 
            () => {
                runningPrograms[program.name] = undefined
            })
        }

        if (!runningProgram) {
            runningPrograms[program.name] = startProgram()
        }

        if (iterations >= 5) {
            var pull = shell.exec(`cd ${program.dir} && git pull`)

            if (!pull.stdout.includes("Already up to date.")) {
                if (runningProgram) {
                    runningProgram.kill()
                    runningPrograms[program.name] = startProgram()
                }
            }
        }
    }

    setTimeout(() => {
        if (iterations >= 5) {
            iterations = 0
        }
        updateLoop()
    }, config.updateSpeedMinutes * 60 * 1000 / 5);
}

updateLoop()