gulpfile

"use strict";
const clean = require('gulp-clean');
const gulp = require('gulp');
const stylus = require('gulp-stylus');
const uglify = require('gulp-uglify');
const concat = require('gulp-concat');
const imageop = require('gulp-image-optimization');
const server = require('gulp-express');


gulp.task("default", ['styl', 'js', 'images', 'fonts', 'html', 'csslib', 'jslib', 'watch'], () => {
  server.run(['server.js']);
});

// clean

gulp.task('clean', function () {
  return gulp.src('app')
    .pipe(clean());
});

// stylus app

gulp.task('styl', () => {

  return gulp.src('./main/stylus/main.styl')
    .pipe(stylus())
    .pipe(concat('style.min.css'))
    .pipe(gulp.dest('./app/css/'));
});

// EcmaScript app

gulp.task('js', () => {

  return gulp.src('main/js/*.js')
    .pipe(uglify())
    .pipe(concat('main.js'))
    .pipe(gulp.dest('./app/js/'));
});

// img 
 
gulp.task('images', () => {
    return gulp.src(['main/img/*'])
      .pipe(imageop())
      .pipe(gulp.dest('app/img/'))
});

// fonts

gulp.task('fonts', () => {
    return gulp.src(['main/fonts/*'])
      .pipe(gulp.dest('app/fonts/'))
});

// jade

gulp.task('html', () => {
    return gulp.src(['main/html/*.html'])
      .pipe(gulp.dest('app/html/'))
});


gulp.task('jslib', () => {
    return gulp.src(['main/js/lib/*.js'])
      .pipe(gulp.dest('app/js/'))
});
gulp.task('csslib', () => {
    return gulp.src(['main/stylus/lib/*.css'])
      .pipe(gulp.dest('app/css/'))
});

// jade

// gulp.task('jade', () => {
//     return gulp.src(['main/html/*.html'])
//       .pipe(gulp.dest('app/html/'))
// });

// watch task

gulp.task('watch', () => {

  gulp.watch('./main/stylus/*.styl', ['styl']);
  gulp.watch('./main/js/*.js', ['js']);
  gulp.watch('./main/img/*', ['images']);
  gulp.watch('./main/fonts/*', ['fonts']);
  gulp.watch('./main/html/*', ['html']);
  gulp.watch('./main/stylus/lib/*', ['csslib']);
  gulp.watch('./main/js/lib/*', ['jslib']);
});