gulpfile.js

var gulp = require('gulp'),
    usemin = require('gulp-usemin'),
    wrap = require('gulp-wrap'),
    connect = require('gulp-connect'),
    watch = require('gulp-watch'),
    minifyCss = require('gulp-cssnano'),
    minifyJs = require('gulp-uglify'),
    concat = require('gulp-concat'),
    less = require('gulp-less'),
    rename = require('gulp-rename'),
    minifyHTML = require('gulp-htmlmin'),
    fs = require('fs'),
    server = require('gulp-express'),
    forever = require('forever-monitor');

var paths = {
    scripts: 'client/js/**/*.*',
    styles: 'client/less/**/*.*',
    images: 'client/img/**/*.*',
    templates: 'client/templates/**/*.html',
    index: 'client/index.html',
    bower_fonts: 'client/components/**/*.{ttf,woff,eof,svg}',
};

var process = null;

/**
 * Handle bower components from index
 */
gulp.task('usemin', function() {
    return gulp.src(paths.index)
        .pipe(usemin({
            js: [minifyJs(), 'concat'],
            css: [minifyCss({keepSpecialComments: 0}), 'concat'],
        }))
        .pipe(gulp.dest('dist/'));
});

/**
 * Copy assets
 */
gulp.task('build-assets', ['copy-bower_fonts']);

gulp.task('copy-bower_fonts', function() {
    return gulp.src(paths.bower_fonts)
        .pipe(rename({
            dirname: '/fonts'
        }))
        .pipe(gulp.dest('dist/lib'));
});

/**
 * Handle custom files
 */
gulp.task('build-custom', ['custom-images', 'custom-js', 'custom-less', 'custom-templates']);

gulp.task('custom-images', function() {
    return gulp.src(paths.images)
        .pipe(gulp.dest('dist/img'));
});

gulp.task('custom-js', function() {
    return gulp.src(paths.scripts)
        .pipe(minifyJs())
        .pipe(concat('dashboard.min.js'))
        .pipe(gulp.dest('dist/js'));
});

gulp.task('custom-less', function() {
    return gulp.src(paths.styles)
        .pipe(less())
        .pipe(gulp.dest('dist/css'));
});

gulp.task('custom-templates', function() {
    return gulp.src(paths.templates)
        .pipe(minifyHTML())
        .pipe(gulp.dest('dist/templates'));
});

/**
 * Watch custom files
 */
gulp.task('watch', function() {
    gulp.watch([paths.images], ['custom-images']);
    gulp.watch([paths.styles], ['custom-less']);
    gulp.watch([paths.scripts], ['custom-js']);
    gulp.watch([paths.templates], ['custom-templates']);
    gulp.watch([paths.index], ['usemin']);
});

/**
 * Live reload server
 */
gulp.task('webserver', function() {
    connect.server({
        root: 'dist',
        livereload: true,
        port: 8888
    });
});

gulp.task('run', function () {
    server.run(['./bin/www']);
});

gulp.task('forever', function () {
    process = new forever.Monitor('./bin/www').start();
});

gulp.task('foreverstop', function () {
    if (process) {
        process.stop();
    } else {
        console.log('The process is not up and running now!')
    }
});


gulp.task('livereload', function() {
    gulp.src(['dist/**/*.*'])
        .pipe(watch(['dist/**/*.*']))
        .pipe(connect.reload());
});

gulp.task('log', function () {
    var dir = './logs';

    if (!fs.existsSync(dir)){
        fs.mkdirSync(dir);
    }
});

/**
 * Gulp tasks
 */
gulp.task('build', ['usemin', 'build-assets', 'build-custom']);
gulp.task('prod', ['build', 'log', 'run']);
gulp.task('stop', ['foreverstop']);
gulp.task('default', ['build', 'log', 'run', 'watch']);