var gulp = require('gulp'),
sass = require('gulp-sass'),
autoprefixer = require('gulp-autoprefixer'),
cleanCSS = require('gulp-clean-css'),
rename = require('gulp-rename'),
browserSync = require('browser-sync').create(),
concat = require('gulp-concat'),
uglify = require('gulp-uglify');

gulp.task('browser-sync', ['styles', 'scripts'], function() {
browserSync.init({
server: {
baseDir: "./app"
},
notify: false
});
});

gulp.task('styles', function () {
return gulp.src('app/sass/*.scss')
.pipe(sass({
includePaths: require('node-bourbon').includePaths
}).on('error', sass.logError))
.pipe(rename({suffix: '.min', prefix : ''}))
.pipe(autoprefixer({browsers: ['last 15 versions'], cascade: false}))
.pipe(cleanCSS())
.pipe(gulp.dest('app/css'))
.pipe(browserSync.stream());
});

gulp.task('scripts', function() {
return gulp.src([
'./app/libs/modernizr/modernizr.js',
'./app/libs/jquery/jquery-1.11.2.min.js',
'./app/libs/waypoints/waypoints.min.js',
'./app/libs/animate/animate-css.js',
])
.pipe(concat('libs.js'))
// .pipe(uglify()) //Minify libs.js
.pipe(gulp.dest('./app/js/'));
});

gulp.task('watch', function () {
gulp.watch('app/sass/*.scss', ['styles']);
gulp.watch('app/libs/**/*.js', ['scripts']);
gulp.watch('app/js/*.js').on("change", browserSync.reload);
gulp.watch('app/*.html').on('change', browserSync.reload);
gulp.watch('app/**/*.php').on('change', browserSync.reload);
});

gulp.task('default', ['browser-sync', 'watch']);