var gulp = require('gulp');
var gls  = require('gulp-live-server');

gulp.task('serve', function() {
    //1. run your script as a server
    var server = gls.new('main.js');
    server.start();

    //2. run script with cwd args, e.g. the harmony flag
    var server = gls.new(['--harmony', 'main.js']);
    //this will achieve `node --harmony main.js`
    //you can access cwd args in `main.js` via `process.argv`
    server.start();

    //use gulp.watch to trigger server actions(notify, start or stop)
    gulp.watch(['views/*.hbs', 'static/views/layouts.hbs'], function (file) {
      server.notify.apply(server, [file]);
    });
    gulp.watch('main.js', server.start.bind(server)); //restart my server

    // Note: try wrapping in a function if getting an error like `TypeError: Bad argument at TypeError (native) at ChildProcess.spawn`
    gulp.watch('main.js', function() {
      server.start.bind(server)()
    });
});

var express = require( 'express' );
var hbs = require( 'express-handlebars' );

var app = express();

app.engine( 'hbs',
            hbs( { extname: '.hbs',
                    defaultLayout: 'layout',
                    layoutsDir: __dirname +"/views/layouts/" } ) );
app.set( 'view engine', 'hbs' );

app.get("/", function( req, res ) {
    res.render("index.hbs", {title:"World"} );
} );

app.use( '/public', express.static( 'public' ) );

var port = Number( process.env.PORT || 5000 );
app.listen( port );

npm install -g gulp