var gulp = require('gulp'),
   uglify = require('gulp-uglify'),
   concat = require('gulp-concat'),
   rename = require("gulp-rename"),
	autoprefixer = require('gulp-autoprefixer'),
	cssmin = require('gulp-cssmin'),
	//preen = require('preen'),
	//bower = require('gulp-bower'),
	//gutil = require('gulp-util'),
	imageop = require('gulp-image-optimization'),
	less = require('gulp-less'),

	livereload = require('gulp-livereload'),
	sourcemaps = require('gulp-sourcemaps'),
	newer = require('gulp-newer');

/**
 * less convertation
 */
gulp.task('process-less', function () {
	return gulp.src('less/main.less')
		.pipe(sourcemaps.init())
		.pipe(less().on('error', function(err) {
			console.log(err);
		}))
		//.pipe(autoprefixer({
		//	browsers:['> 1%', 'Opera > 11', 'Explorer >= 8', 'Firefox >20', 'Chrome > 20']
		//}))
		.pipe(autoprefixer({
			browsers:['> 1%', 'Opera > 11', 'Explorer >= 8', 'Firefox >20', 'Chrome > 20']
		}))
		.pipe(sourcemaps.write())
		.pipe(gulp.dest('css'));
});
/**
 * concatenate all js used lib files in one vendor.js files and minimized it
 */
gulp.task('make-vendor-js', function () {
   return gulp.src([
		'bower_components/jquery/jquery.js',
		'bower_components/bootstrap/dist/js/bootstrap.js',
		'bower_components/superscrollorama/js/greensock/TweenMax.min.js',
		'bower_components/superscrollorama/js/jquery.superscrollorama.js'
   	])
      .pipe(concat('vendor.js'))
      .pipe(gulp.dest('js'))
      .pipe(uglify())
      .pipe(rename('vendor.min.js'))
      .pipe(gulp.dest('js'))

});
/**
 * concatenate all used css lib files in one vendor.css files and minimized it
 */
gulp.task('make-vendor-css', function () {
	return gulp.src([
		'bower_components/normalize.css/normalize.css',
		'bower_components/html5-boilerplate/src/css/main.css',
		'bower_components/bootstrap/dist/css/bootstrap.css',
		'bower_components/bootstrap/dist/css/bootstrap-theme.css'
   	])
      .pipe(concat('vendor.css'))
      .pipe(gulp.dest('css'))
      .pipe(cssmin())
      .pipe(rename('vendor.min.css'))
      .pipe(gulp.dest('css'))

});

gulp.task('main-css',["process-less"], function () {
   return gulp.src('css/main.css')
	  	  .pipe(livereload());
});


/**
 * images optimization
 */
gulp.task('minfy-images', function(cb) {
	gulp.src(['img/**/*.png','img/**/*.jpg', 'img/**/*.gif']).pipe(imageop({
		optimizationLevel: 5,
		progressive: true,
		interlaced: true
	})).pipe(gulp.dest('img')).on('end', cb).on('error', cb);
});
gulp.task('minfy-png', function(cb) {
	gulp.src('img/**/*.png').pipe(imageop({
		optimizationLevel: 7

	})).pipe(gulp.dest('img')).on('end', cb).on('error', cb);
});

//gulp.task('minify-modules', function () {
//	return gulp.src('frontend/web/js/*.js')
//	   .pipe(newer('frontend/web/min/js'))
//      .pipe(uglify())
//      .pipe(rename({extname: ".min.js"}))
//      .pipe(gulp.dest('frontend/web/min/js'))
//
//});
//gulp.task('production',['make-vendor-js','make-vendor-css','main-css','minify-modules']);
gulp.task('reload', function () {
	livereload.reload();

});
//
//gulp.task('watch-js', function () {
//	livereload.reload();
//	gulp.watch("frontend/web/js/*.js", ["minify-modules"]);
//});
gulp.task('watch-all', function () {
	livereload.listen();
	gulp.watch("less/main.less", ["main-css"]);
	//gulp.watch("frontend/web/js/*.js", ["minify-modules","reload"]);
	gulp.watch("*.html", ["reload"]);
});
//gulp.task('watch-workflow', function () {
//	gulp.watch(["static_client/css/main.css","static_client/js/_modules/*.js"], ["main-css","minify-modules"]);
//});
//Project maintenance

/**
 * update all vendor libs in project
 * lib are downloaded with bower, cleaned and copied to lib/ folder
 * requires git being installed on server or in the PATH
 */
//gulp.task('update-vendor',['bower-preen','bower-to-project'], function(cb) {
//	return gutil.log('libs updated!');
//});

// BOWER MANIPULATIONS

/**
 * get vendor libs folders from bower folder and copy to project structure
 */
//gulp.task('bower-to-project', function(cb) {
//	return gulp.src('vendor/bower/**/*')
//		.pipe(gulp.dest('frontend/web/lib/'));
//});

/**
 * update vendor libs installed by bower
 * requires git being installed or in the PATH
 */
//gulp.task('bower-update', function(cb) {
//	bower({ cmd: 'update'});
//});

/**
 * clean unnecessary files from vendor libs installed by bower.js
 */
//gulp.task('bower-preen', function(cb) {
//	preen.preen({}, cb);
//});
gulp.task('default', ['watch-all'], function() {
	// place code for your default task here
});