appify.js

const path = require('path')
const fs = require('fs')
const [script, name] = process.argv.slice(2)

switch (script) {
	case undefined:
	case '-h':
	case '--help':
		console.log(`
			nodejs port of appify v3.0.1 - http://mths.be/appify
			Creates the simplest possible Mac app from a shell script.
			Appify takes a shell script as its first argument:
			    appifyjs my-script.sh
			Note that you cannot rename appified apps. If you want to give your app
			a custom name, use the second argument:
			    appifyjs my-script.sh "My App"
			Copyright (c) Thomas Aylott <http://subtlegradient.com/>
			Modified by Mathias Bynens <http://mathiasbynens.be/>
			Ported by Ben Merckx
		`.split('\t').join('').trim())
		break
	default:
		const appName = name || path.basename(script).split('.').slice(0, -1).join('.')
		const pwd = process.cwd()
		const dir = `${appName}.app/Contents/MacOS`

		if (fs.existsSync(dir)) {
		    console.log(`${pwd}/${appName}.app already exists :(`)
		    process.exit(1)
		}

		dir.split('/')
		.reduce((acc, curr) => {
			const dir = `${acc}/${curr}`
			fs.mkdirSync(dir)
			return dir
		}, pwd)
		fs.writeFileSync(`${dir}/${appName}`, fs.readFileSync(script))
		fs.chmodSync(`${dir}/${appName}`, 0755)

		console.log(`${pwd}/${appName}.app`)
}