gulpfile.js

var gulp
			= require('gulp'),
	gutil       	= require('gulp-util'),
	gutils		= require('gulp-load-utils')(['date']);
	sass        	= require('gulp-sass'),
	csso        	= require('gulp-csso'),
	uglify      	= require('gulp-uglify'),
	jade        	= require('gulp-jade'),
	concat      	= require('gulp-concat'),
	livereload  	= require('gulp-livereload'), // Livereload plugin needed: https://chrome.google.com/webstore/detail/livereload/
	tinylr      	= require('tiny-lr'),
	express     	= require('express'),
	app         	= express(),
	marked      	= require('marked'), // For :markdown filter in jade
	path        	= require('path'),
	scsslint    	= require('gulp-scsslint'),
	compass     = require('gulp-compass'),
	autoprefixer 	= require('gulp-autoprefixer'),
	minifyCSS   = require('gulp-minify-css'),
	rename      	= require('gulp-rename'),
	coffee      	= require("gulp-coffee"),
	notify      	= require('gulp-notify'),
	clean       	= require('gulp-clean'),
	changed     = require('gulp-changed')
	server      	= tinylr(),
	gzip 		= require('gulp-gzip'),
	exec 		= require('gulp-exec'),
	header		= require('gulp-header'),
	jshint 		= require('gulp-jshint'),
	uglify 		= require('gulp-uglify'),
	plumber 	= require('gulp-plumber'),
	md5         	= require('MD5'),
	gulpif 		= require('gulp-if'),
	del 			= require('del'),
	cache 		= require('gulp-cache'),
	imagemin	= require('gulp-imagemin'),
	args 		= require('yargs').argv;

	var isStaging = args.type === 'staging';
	var isProduction = args.type === 'production';

	// gulp scripts --type production

	// Build out Compass files
	gulp.task('compass', function() {
	  gulp.src('source/assets/sass/**/*.scss')
	  	.pipe(changed('build/assets/css')) // Check for changed files
	  	.pipe(plumber()) // Keep Gulp running even if there are erros
		.pipe(compass({
			css: 'build/assets/css',
			sass: 'source/assets/sass',
			image: 'source/assets/img',
			style: 'expanded'
		}))
		.pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1'))
		.pipe( rename({suffix: '.min'}))
		.pipe( csso()) // Compress CSS
		.pipe(header('/* Last Updated:' + gutils.date('mmm d, yyyy h:MM:ss TT')  + '*/\n')) // Add date top of the file
		.pipe(gulpif(isStaging, gzip( {append: false})))
		.pipe( gulp.dest('build/assets/css'))
		.pipe(exec('rm -rf ~/Dropbox/htdocs/www.arts.ac.uk/html/assets/css; cp -r build/assets/css ~/Dropbox/htdocs/www.arts.ac.uk/html/assets/'))
		.pipe(notify({ message: 'Compass task complete' }));
	});

// Build out Coffescript
gulp.task('coffee', function () {
 	gulp.src(['source/assets/coffeescript/modules/**/*.coffee',
	'source/assets/coffeescript/on_doc_ready/**/*.coffee',
	'source/assets/coffeescript/on_window_load/**/*.coffee',
	'source/assets/coffeescript/on_window_resize/**/*.coffee'])
    	.pipe(changed('build/assets/js'))
    	.pipe(plumber())
	.pipe(coffee({bare: true}).on('error', gutil.log))
	.pipe(concat('compiled.modules.js'))
	//.pipe(jshint()) Too Many Errors
	//.pipe(jshint.reporter('default'))
	.pipe( rename('script.js'))
	.pipe(gulp.dest('build/assets/js'))
	.pipe( rename('script.min.js'))
	.pipe(uglify())
	.pipe(header('/* Last Updated:' + gutils.date('mmm d, yyyy h:MM:ss TT')  + '*/\n'))
	 .pipe(gulpif(isStaging, gzip( {append: false})))
	.pipe(gulp.dest('build/assets/js'))
	.pipe(exec('rm -rf ~/Dropbox/htdocs/www.arts.ac.uk/html/assets/js; cp -r build/assets/js ~/Dropbox/htdocs/www.arts.ac.uk/html/assets/'))
	.pipe(notify({ message: 'Coffee is complete' }));
});


gulp.task('jade', function() {
  return gulp.src(
	[
	'source/**/*.jade',
	'!source/_includes/**/*.jade',
	'!source/_layout/**/*.jade',
	'!source/blog/**/*.jade',
	'!source/styleguide/**/*.jade',
	'source/index.jade'
	]
	)
      .pipe(changed('build/assets/js', {extension: '.html'}))
	.pipe(jade({
	 	pretty: true
	}))
	.pipe(gulp.dest('build'))
	.pipe(notify({ message: 'Jade task is complete' }));
});

gulp.task('images', function() {
	return gulp.src('source/assets/img/**/*')
    	.pipe(changed('build/assets/img'))
    	.pipe(cache(imagemin({ optimizationLevel: 5, progressive: true, interlaced: true })))
    	.pipe(gulp.dest('build/assets/img'))
});

gulp.task('express', function() {
	app.use(express.static(path.resolve('build')));
	app.listen(9000);
	 gutil.log('Listening on port: 9000');
});


gulp.task('clean', function(cb) {
    del(['build'], cb)
});

gulp.task('watch', function () {
 	server.listen(35729, function (err) {
		if (err) {
	  		return console.log(err);
		}
	gulp.watch('src/assets/styles/*/*.scss',['compass']);
	 gulp.watch(['src/coffeescript/modules/**/*.coffee',
	'src/coffeescript/on_doc_ready/**/*.coffee',
	'src/coffeescript/on_window_load/**/*.coffee',
	'src/coffeescript/on_window_resize/**/*.coffee'],['compass']);
	gulp.watch('src/assets/js/*.js',['js']);
	gulp.watch('src/jade/*/*.jade',['templates']);

  });
});

//// Default Task
//gulp.task('default', ['compass','jade','coffee' , 'image', 'express','watch']);

// Default task
gulp.task('default', ['clean'], function() {
    gulp.start('compass', 'jade', 'images', 'coffee', 'express', 'watch');
});

package.json

{
  "name": "ual",
  "version": "1.0.0",
  "description": "UAL build system",
  "main": "]index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Howard Panton",
  "license": "ISC",
  "devDependencies": {
    "marked": "^0.3.2",
    "tiny-lr": "^0.1.0",
    "gulp-concat": "^2.3.4",
    "gulp-livereload": "^2.1.0",
    "gulp-util": "^3.0.0",
    "gulp-uglify": "~0.3.2",
    "gulp-jade": "^0.7.0",
    "gulp": "^3.8.7",
    "gulp-csso": "^0.2.9",
    "gulp-sass": "^0.7.2",
    "gulp-scss-lint": "^0.1.1",
    "gulp-scsslint": "0.0.5",
    "gulp-compass": "^1.2.0",
    "gulp-minify-css": "^0.3.7",
    "gulp-rename": "^1.2.0",
    "gulp-autoprefixer": "0.0.8",
    "gulp-coffee": "^2.1.1",
    "gulp-changed": "~1.0.0",
    "gulp-notify": "^1.4.2",
    "gulp-clean": "^0.3.1",
    "MD5": "^1.2.1",
    "gulp-exec": "~2.1.0",
    "gulp-gzip": "0.0.8",
    "gulp-header": "~1.0.5",
    "gulp-load-utils": "0.0.4",
    "dateformat": "~1.0.8-1.2.3",
    "gulp-jshint": "~1.8.4",
    "gulp-plumber": "~0.6.5",
    "yargs": "~1.3.1",
    "gulp-if": "~1.2.4",
    "del": "~0.1.2",
    "imagemin": "~1.0.4",
    "gulp-cache": "~0.2.1",
    "gulp-cached": "~1.0.1",
    "gulp-imagemin": "~1.0.1"
  }
}