index.js

#!/usr/bin/env node 
const fs = require('fs')
const { execSync } = require("child_process")

if (!fs.existsSync(`${process.cwd()}/package.json`)) {
    console.log("package.json could not be found")
    process.exit()
}

// filesystem
if (!fs.existsSync('filesystem')) {
    console.log("filesystem could not be found")
    process.exit()
}
else if (!fs.existsSync('filesystem/Makefile') || !fs.existsSync('filesystem/grub.sh') ||
!fs.existsSync('filesystem/iso') || !fs.existsSync('filesystem/chroot')) {
    console.log("filesystem corrupted!")
    process.exit()
}

// package.json data
const { name, AppImage } = require(`${process.cwd()}/package.json`)

if (!name) {
    console.log("Please specify a name in package.json")
    process.exit()
}
else if (!AppImage) {
    console.log("Please specify the AppImage path in package.json")
    process.exit()
}

// AppImage file 
if (!fs.existsSync(AppImage) && !fs.existsSync(`filesystem/chroot/root/${AppImage.split('/').pop()}`)) {
    console.log("AppImage file could not be found")
    process.exit()
}

// clean up
if (fs.existsSync(`filesystem/${name}.iso`) || fs.existsSync('filesystem/iso/live/filesystem.squashfs')) {
    process.stdout.write("Cleaning...")
    try { execSync("make -C filesystem clean name="+name) }
    catch(e){}
}

// make
if (!fs.existsSync(AppImage) && fs.existsSync(`filesystem/chroot/root/${AppImage.split('/').pop()}`)) {
    process.stdout.write("\nUsing the AppImage file in the root directory...")
    make()
}
else {
    process.stdout.write("\nMoving AppImage file...")
    fs.renameSync(AppImage, 'filesystem/'+AppImage.split('/').pop())
    execSync("make -C filesystem move AppImage="+AppImage.split('/').pop())
    fs.writeFileSync('filesystem/chroot/root/.bashrc', `startx ./${AppImage.split('/').pop()} --no-sandbox`)
    make()
}

function make() {
    process.stdout.write("\nGenerating squashfs filesystem...")
    execSync("make -C filesystem genChroot")

    process.stdout.write("\nSetting grub.cfg...")
    execSync("make -C filesystem grub name="+name)

    process.stdout.write("\nGenerating ISO file...")
    execSync("make -C filesystem genISO name="+name)
    console.log()
}