magic-mirror-power.js

const http = require('http');
const URL = require('url');
const { execSync } = require('child_process');

const port = 3000;

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'application/json');
  routes(req,res);
});

server.listen(port, () => {
  console.log(`Server running at http://localhost:${port}/`);
});

const status = () => {
	const result = execSync(`vcgencmd display_power`).toString().trim()
	// 1 = on ; 0 = off
	return result == "display_power=1" ? "on" : "off"
}

const routes = (req,res) => {
	const {query , pathname} = URL.parse(req.url,true);
	switch(pathname) {
		case "/turn-on":
			execSync('/usr/bin/vcgencmd display_power 1');
			res.end(JSON.stringify({ status: status() }));
			break;
		case "/turn-off":
			execSync('/usr/bin/vcgencmd display_power 0');
			res.end(JSON.stringify({ status: status() }));
			break;
		case "/restart":
			execSync('/home/pi/.npm-global/bin/pm2 restart magic-mirror');
			res.end(JSON.stringify({ status: status() }));
			break;
		default:
			res.end(JSON.stringify({ status: status() }));
	}
}

pm2 start magic-mirror-power.js
pm2 save