#!/usr/bin/env node

/**
 * Module dependencies.
 */

import debugLib from "debug";
import http from "http";
import app from "../app";
import { port } from "../config";

const debug = debugLib("musictopus:server");
const server = http.createServer(app);

/**
 * Event listener for HTTP server "error" event.
 * @param {*} error
 */
function onError(error) {
    if (error.syscall !== "listen") {
        throw error;
    }

    const bind = typeof port === "string" ? `Pipe ${port}` : `Port ${port}`;

    switch (error.code) {
        case "EACCES":
            console.error(`${bind} requires elevated privileges`);
            process.exit(1);
            break;
        case "EADDRINUSE":
            console.error(`${bind} is already in use`);
            process.exit(1);
            break;
        default:
            throw error;
    }
}

/**
 * Event listener for HTTP server "listening" event.
 */
function onListening() {
    const addr = server.address();
    const bind =
        typeof addr === "string" ? `pipe ${addr}` : `port ${addr.port}`;
    debug(`Listening on ${bind}`);
}

server.listen(port);
server.on("error", onError);
server.on("listening", onListening);