const {URL} = require('url');

module.exports = function parseEndpoint(str) {
	const url = new URL(str);

	switch (url.protocol) {
	case 'pipe:': {
		// some special handling
		const cutStr = str.replace(/^pipe:/, '');
		if (cutStr.slice(0, 4) !== '\\\\.\\') {
			throw new Error(`Invalid Windows named pipe endpoint: ${str}`);
		}
		return [cutStr];
	}
	case 'unix:':
		if (!url.pathname) {
			throw new Error(`Invalid UNIX domain socket endpoint: ${str}`);
		}
		return [url.pathname];
	case 'tcp:':
		url.port = url.port || '3000';
		return [parseInt(url.port, 10), url.hostname];
	default:
		throw new Error(`Unknown --listen endpoint scheme (protocol): ${url.protocol}`);
	}
};