const express = require('express');

const app = express();
const port = process.env.SERVER_PORT || 3000;

app.get('/', (req, res) => {
	res.send('Hello, world!');
});

app.get('/time.php', (req, res) => {
	// Logging
	if (req.headers['user-agent'] && req.headers['user-agent'].includes('Roblox/Linux')) { // Is roblox server
		console.log(`Request from Roblox server. Place ${req.headers['roblox-id']} (${req.headers['x-forwarded-for'] || 'unknown IP'})`);
	} else if(req.headers['user-agent'] && req.headers['user-agent'].includes('RobloxStudio')) { // Is roblox studio
		console.log(`Request from Roblox Studio. Place ${req.headers['roblox-id']} (${req.headers['x-forwarded-for'] || 'unknown IP'})`);
	} else {
		console.log(`Request from ${req.headers['user-agent'] || `unknown user agent ${req.headers['x-forwarded-for'] || 'unknown IP'}`}`);
	}

	const tz = req.query.zone || 'UTC';
	const date = new Date();
	try {
		const options = { timeZone: tz, hour12: false };
		const formatter = new Intl.DateTimeFormat('en-GB', {
			...options,
			year: 'numeric',
			month: '2-digit',
			day: '2-digit',
			hour: '2-digit',
			minute: '2-digit',
			second: '2-digit'
		});
		const parts = formatter.formatToParts(date);
		const get = type => parts.find(p => p.type === type).value;
		const formatted = `${get('day')}${get('month')}${get('year')}${get('hour')}${get('minute')}${get('second')}`;
		res.send(formatted);
	} catch (e) {
		res.status(400).send('Invalid timezone');
	}
});



app.listen(port, () => {
	console.log(`Server is running on port ${port}`);
});