var gulp = require('gulp')
  ,imagemin = require('gulp-imagemin')
  ,clean = require('gulp-clean')
  ,concat = require('gulp-concat')
  ,htmlReplace = require('gulp-html-replace')
  ,uglify = require('gulp-uglify')
  ,usemin = require('gulp-usemin')
  ,cssmin = require('gulp-cssmin')
  ,browserSync = require('browser-sync');

gulp.task('default', ['copy'], function() {
	gulp.start('build-img', 'usemin');
});

gulp.task('copy', ['clean'], function() {
	return gulp.src('src/**/*')
		.pipe(gulp.dest('dist'));
});

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

gulp.task('build-img', function() {

  return gulp.src('dist/img/**/*')
    .pipe(imagemin())
    .pipe(gulp.dest('dist/img'));
});

gulp.task('usemin', function() {
  return gulp.src('dist/**/*.html')
    .pipe(usemin({
      js: [uglify],
      css: [cssmin]
    }))
    .pipe(gulp.dest('dist'));
});

gulp.task('server', function() {
    browserSync.init({
        server: {
            baseDir: 'src'
        }
    });

    gulp.watch('src/**/*').on('change', browserSync.reload);   

});
