'use strict';

/**
 * Base Class for wrapping HTTP/HTTPS servers
 */
class Server {
	/**
	 * Event listener for HTTP(s) server "error" event.
	 *
	 * @param {error} error - the error object
	 * @return {null} - Does not return a value
	 * @throws {error}
	 */
	onError(error) {
		if (error.syscall !== 'listen') {
			throw error;
		}

		let port = this.server.address().port;

		let bind = typeof port === 'string'
			? `Pipe ${port}`
			: `Port ${port}`;

		// handle specific listen errors with friendly messages
		switch (error.code) {
			case 'EACCES':
				logger.error(`${bind} requires elevated privileges`);
				process.exit(1);
				break;
			case 'EADDRINUSE':
				logger.error(`${bind} is already in use`);
				process.exit(1);
				break;
			default:
				throw error;
		}
	}
}

module.exports = Server;