///<reference path="../typings/tsd.d.ts"/>

import * as _express from 'express';
import * as _debug from 'debug';
import * as _http from 'http';

var debug = _debug("PiGallery2:server");
var app = _express();


if(process.env.DEBUG) {
    console.log("Running in DEBUG mode");

    import * as _morgan from 'morgan';
    app.use(_morgan('dev'));
}


app.use(_express.static(__dirname +'./../frontend'));
app.use('/node_modules',_express.static(__dirname +'./../node_modules'));



/**
 * Get port from environment and store in Express.
 */

var port = normalizePort(process.env.PORT || '3001');
app.set('port', port);

/**
 * Create HTTP server.
 */

var server = _http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

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

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
    var port = parseInt(val, 10);

    if (isNaN(port)) {
        // named pipe
        return val;
    }

    if (port >= 0) {
        // port number
        return port;
    }

    return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
    if (error.syscall !== 'listen') {
        throw error;
    }

    var bind = typeof port === 'string'
        ? 'Pipe ' + port
        : 'Port ' + port;

    // handle specific listen errors with friendly messages
    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() {
    var addr = server.address();
    var bind = typeof addr === 'string'
        ? 'pipe ' + addr
        : 'port ' + addr.port;
    debug('Listening on ' + bind);
}