gulpfile.js

const gulp = require('gulp'),
  sass = require('gulp-sass'),
  autoprefixer = require('gulp-autoprefixer'),
  sourcemaps = require('gulp-sourcemaps'),
  cleanCSS = require('gulp-clean-css'),
  rename = require('gulp-rename'),
  concat = require('gulp-concat'),
  uglify = require('gulp-uglify'),
  babel = require('gulp-babel'),
  replace = require('gulp-replace'),
  gap = require('gulp-append-prepend'),
  log = require('fancy-log'),
  touch = require('gulp-touch-cmd'),
  spawn = require('cross-spawn'),
  svgSprite = require('gulp-svg-sprite'),
  browserSync = require('browser-sync').create(),
  pkg = require('./package.json')

const DOCUMENTATION_DESTINATION = '_site'

const Paths = {
  VENDOR_JS: [
    'node_modules/jquery/dist/jquery.js',
    'node_modules/popper.js/dist/umd/popper.js',
    'node_modules/owl.carousel/dist/owl.carousel.js',
  ],
  SOURCE_JS: [
    'node_modules/bootstrap/dist/js/bootstrap.js',
    'node_modules/bootstrap-select/js/bootstrap-select.js',
    'node_modules/bootstrap-select/js/i18n/defaults-it_IT.js',
    'node_modules/svgxuse/svgxuse.js',
    'src/js/plugins/polyfills/array.from.js',
    'src/js/plugins/circular-loader/CircularLoader-v1.3.js',
    'src/js/plugins/password-strength-meter/password-strength-meter.js',
    'src/js/plugins/datepicker/locales/it.js',
    'src/js/plugins/datepicker/datepicker.js',
    'src/js/plugins/i-sticky/i-sticky.js',
    'src/js/plugins/sticky-header.js',
    'src/js/plugins/sticky-wrapper.js',
    'src/js/plugins/ie.js',
    'src/js/plugins/fonts-loader.js',
    'src/js/plugins/autocomplete.js',
    'src/js/plugins/back-to-top.js',
    'src/js/plugins/componente-base.js',
    'src/js/plugins/cookiebar.js',
    'src/js/plugins/dropdown.js',
    'src/js/plugins/forms.js',
    'src/js/plugins/track-focus.js',
    'src/js/plugins/forward.js',
    'src/js/plugins/navbar.js',
    'src/js/plugins/navscroll.js',
    'src/js/plugins/history-back.js',
    'src/js/plugins/notifications.js',
    'src/js/plugins/upload.js',
    'src/js/plugins/progress-donut.js',
    'src/js/plugins/list.js',
    'src/js/plugins/imgresponsive.js',
    'src/js/plugins/timepicker.js',
    'src/js/plugins/input-number.js',
    'src/js/plugins/carousel.js',
    'src/js/plugins/transfer.js',
    'src/js/plugins/select.js',
    'src/js/plugins/rating.js',
    'src/js/plugins/dimmer.js',
    'src/js/' + pkg.name + '.js',
  ],

  SOURCE_SCSS: 'src/scss/' + pkg.name + '.scss',
  SOURCE_DOCUMENTATION_SCSS: 'docs/assets/src/scss/docs.scss',
  SOURCE_DOCUMENTATION_JS: [
    'docs/assets/src/js/cover-animation.js',
    'docs/assets/src/js/docs.js',
  ],
  DIST: 'dist',
  DIST_DOCUMENTATION: 'docs/assets/dist',
  SCSS_WATCH: 'src/scss/**/**',
  JS_WATCH: 'src/js/**/**',
  SCSS_DOCUMENTATION_WATCH: 'docs/assets/src/scss/**/**',
  JS_DOCUMENTATION_WATCH: 'docs/assets/src/js/**/**',
}

const bootstrapItaliaBanner = [
  '/*!',
  ' * ' + pkg.description,
  ' * @version v' + pkg.version,
  ' * @link ' + pkg.homepage,
  ' * @license ' + pkg.license,
  ' */',
  '',
].join('\n')

const jqueryCheck =
  "if (typeof jQuery === 'undefined') {\n" +
  "  throw new Error('Bootstrap\\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\\'s JavaScript.')\n" +
  '}\n'
const jqueryVersionCheck =
  '+function ($) {\n' +
  "  var version = $.fn.jquery.split(' ')[0].split('.')\n" +
  '  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1) || (version[0] >= 4)) {\n' +
  "    throw new Error('Bootstrap\\'s JavaScript requires at least jQuery v1.9.1 but less than v4.0.0')\n" +
  '  }\n' +
  '}(jQuery);\n'

// Library related tasks

gulp.task('scss-min', () => {
  return gulp
    .src(Paths.SOURCE_SCSS)
    .pipe(gap.prependText(bootstrapItaliaBanner))
    .pipe(sourcemaps.init())
    .pipe(sass().on('error', sass.logError))
    .pipe(autoprefixer())
    .pipe(
      cleanCSS({
        level: 2,
        specialComments: 'all',
      })
    )
    .pipe(
      rename({
        suffix: '.min',
      })
    )
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest(Paths.DIST + '/css'))
    .pipe(touch())
})

gulp.task('js-min', () => {
  return gulp
    .src(Paths.SOURCE_JS)
    .pipe(concat(pkg.name + '.js'))
    .pipe(sourcemaps.init())
    .pipe(replace(/^(export|import).*/gm, ''))
    .pipe(
      babel({
        compact: true,
        presets: [
          [
            '@babel/env',
            {
              modules: false,
              loose: true,
              exclude: ['transform-typeof-symbol'],
            },
          ],
        ],
        plugins: ['@babel/plugin-proposal-object-rest-spread'],
      })
    )
    .pipe(uglify())
    .pipe(gap.prependText(jqueryVersionCheck, '\n\n'))
    .pipe(gap.prependText(jqueryCheck, '\n\n'))
    .pipe(gap.prependText(bootstrapItaliaBanner, '\n\n'))
    .pipe(
      rename({
        suffix: '.min',
      })
    )
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest(Paths.DIST + '/js'))
    .pipe(touch())
})

gulp.task('js-bundle-min', () => {
  return gulp
    .src(Paths.VENDOR_JS.concat(Paths.SOURCE_JS))
    .pipe(concat(pkg.name + '.bundle.js'))
    .pipe(sourcemaps.init())
    .pipe(replace(/^(export|import).*/gm, ''))
    .pipe(
      babel({
        compact: true,
        presets: [['@babel/env', { modules: false, loose: true }]],
        plugins: ['@babel/plugin-proposal-object-rest-spread'],
      })
    )
    .pipe(uglify())
    .pipe(gap.prependText(bootstrapItaliaBanner))
    .pipe(
      rename({
        suffix: '.min',
      })
    )
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest(Paths.DIST + '/js'))
    .pipe(touch())
})

// Documentation related tasks

gulp.task('documentation-scss-min', () => {
  return gulp
    .src(Paths.SOURCE_DOCUMENTATION_SCSS)
    .pipe(sourcemaps.init())
    .pipe(sass().on('error', sass.logError))
    .pipe(
      cleanCSS({
        compatibility: 'ie10',
      })
    )
    .pipe(autoprefixer())
    .pipe(sourcemaps.write())
    .pipe(
      rename({
        suffix: '.min',
      })
    )
    .pipe(gulp.dest(Paths.DIST_DOCUMENTATION + '/css'))
    .pipe(touch())
})

gulp.task('documentation-js-vendor', () => {
  return gulp
    .src('docs/assets/src/js/vendor/*.min.js')
    .pipe(gulp.dest(Paths.DIST_DOCUMENTATION + '/js/vendor'))
    .pipe(touch())
})

gulp.task('documentation-js-min', () => {
  return gulp
    .src(Paths.SOURCE_DOCUMENTATION_JS)
    .pipe(uglify())
    .pipe(
      rename({
        suffix: '.min',
      })
    )
    .pipe(gulp.dest(Paths.DIST_DOCUMENTATION + '/js'))
    .pipe(touch())
})

gulp.task('svg-sprite', function() {
  return gulp
    .src('src/svg/it-*.svg')
    .pipe(
      svgSprite({
        shape: {
          dimension: {
            // Set maximum dimensions
            maxWidth: 32,
            maxHeight: 32,
          },
        },
        mode: {
          defs: {
            dest: '.',
            sprite: 'sprite.svg',
          },
        },
      })
    )
    .pipe(gulp.dest(Paths.DIST + '/svg'))
})

// Assets related tasks
gulp.task('assets', () => {
  return gulp
    .src(['src/assets/**'])
    .pipe(gulp.dest(Paths.DIST + '/assets'))
    .pipe(touch())
})

// Fonts
gulp.task('fonts', () => {
  return gulp
    .src(['src/fonts/**'])
    .pipe(gulp.dest(Paths.DIST + '/fonts'))
    .pipe(touch())
})

// Main Jekyll task

gulp.task('jekyll', done => {
  const jekyll =
    process.platform === 'win32'
      ? spawn('jekyll.bat', [
          'build',
          '--watch',
          '--incremental',
          '--drafts',
          '--config',
          '_config.yml',
        ])
      : spawn('bundle', [
          'exec',
          'jekyll',
          'build',
          '--watch',
          '--incremental',
          '--drafts',
          '--config',
          '_config.yml',
        ])

  const jekyllOutput = buffer => {
    log('Jekyll: ' + buffer.toString())
    if (buffer.toString().indexOf('done') > -1) done() // TODO trovare un modo migliore per verificare quando Jekyll ha completato
  }

  jekyll.stdout.on('data', jekyllOutput)
  jekyll.stderr.on('data', jekyllOutput)
})

// Library

gulp.task(
  'build-library',
  gulp.series(
    'svg-sprite',
    'scss-min',
    'js-min',
    'js-bundle-min',
    'fonts',
    'assets'
  )
)

// Documentation

gulp.task(
  'build-documentation',
  gulp.series('documentation-scss-min', 'documentation-js-vendor', 'documentation-js-min')
)

// Sync

gulp.task('sync', () => {
  browserSync.init({
    files: [DOCUMENTATION_DESTINATION + '/**'],
    port: 4000,
    server: {
      baseDir: DOCUMENTATION_DESTINATION,
    },
  })

  gulp.watch([Paths.SCSS_WATCH, Paths.JS_WATCH], gulp.series('build-library'))

  gulp.watch(
    [Paths.SCSS_DOCUMENTATION_WATCH, Paths.JS_DOCUMENTATION_WATCH],
    gulp.series('build-documentation')
  )
})

// Main build task

gulp.task('build', gulp.series('build-library', 'build-documentation'))

// Main serve task
// Cambiato ordine di esecuzione task - @redbaron76
// sync utilizza nuovo build onSave anzichè quello vecchio
gulp.task('serve', gulp.series('build', 'jekyll', 'sync'))