'use strict';

const gulp = require("gulp");
const sass = require('gulp-sass');
const autoprefixer = require('autoprefixer');
const sourcemaps = require('gulp-sourcemaps');
const livereload = require('gulp-livereload');
const export_sass = require('node-sass-export');
const sassGlob = require('gulp-sass-glob');
const postcss = require('gulp-postcss');
const base_64 = require('postcss-inline-base64');
const minify = require("gulp-minify");


const catch_error = (err) => {
  console.log(err.toString());
  this.emit('end');
};

function theme_scss() {
  return gulp
    .src('web/themes/yat/scss/**/*.scss')
    .pipe(sourcemaps.init())
    .pipe(sassGlob())
    .pipe(sass(
      {
        functions: export_sass('web/themes/yat')
      }
    ))
    .on('error', catch_error)
    .pipe(postcss([
      base_64({useCache: false}),
      autoprefixer({browsers: ['last 2 versions'], cascade: false}),
    ]))
    .pipe(sourcemaps.mapSources(function (sourcePath) {
      return '../' + sourcePath.replace(/.*\./, '') + '/' + sourcePath;
    }))
    .pipe(sourcemaps.write(''))
    .pipe(gulp.dest('web/themes/yat/css'))
    .pipe(livereload())
}

function module_scss() {
  return gulp
    .src('web/modules/custom/**/*.scss')
    .pipe(sourcemaps.init())
    .pipe(sass())
    .on('error', catch_error)
    .pipe(postcss([
      base_64({useCache: false}),
      autoprefixer({browsers: ['last 2 versions'], cascade: false}),
    ]))
    .pipe(sourcemaps.mapSources(function (sourcePath) {
      return sourcePath.replace(/.*\//, '');
    }))
    .pipe(sourcemaps.write(''))
    .pipe(gulp.dest('web/modules/custom'))
    .pipe(livereload())
}


function module_js() {
  const fold = 'web/modules/custom';

  return gulp
    .src([`${fold}/**/*.js`, `!${fold}/**/*min.js`])
    .pipe(sourcemaps.init())
    .pipe(sourcemaps.identityMap())
    .pipe(minify({
      ext: {
        min: '.min.js'
      },
      noSource: true
    }))
    .on('error', catch_error)
    .pipe(sourcemaps.mapSources(function (sourcePath) {
      return sourcePath.replace(/.*\//, '');
    }))
    .pipe(sourcemaps.write(''))
    .pipe(gulp.dest(fold))

}

function watch() {
  livereload.listen();
  theme_scss();
  module_scss();
  module_js();
  gulp.watch('web/themes/yat/scss/**/*.scss', gulp.series(theme_scss));
  gulp.watch('web/modules/custom/**/*.scss', gulp.series(module_scss));
  gulp.watch(['web/modules/custom/**/*.js', '!web/modules/custom/**/*min.js'], gulp.series(module_js));
}

exports.theme_scss = theme_scss;
exports.default = exports.build = gulp.series(
  theme_scss,
  module_scss,
  module_js
);
exports.watch = watch;
exports.module_js = gulp.series(module_js);