gulpfile.js

'use strict';

const gulp = require('gulp')
const sourcemaps = require('gulp-sourcemaps')
const babel = require("gulp-babel")
const sass = require('gulp-sass')
const googleWebFonts = require('gulp-google-webfonts')
const git = require('gulp-git');
const electron = require('electron-connect').server.create({
  "remote-debugging-port": 9992
});

const config = { source: './src' }
config.js2015 = config.source + '/js-dist/'
config.jsNext = config.source + '/js/**/*'
config.sass = config.source + '/themes/default/sass/**/*'
config.css = config.source + '/themes/default/css/'
config.fontsList = config.source + '/themes/googlefonts.list'
config.fontsDest = config.source + '/themes/google-fonts/'

/* Start Tasks */

gulp.task('default', ['production', 'compile-babel', 'compile-sass', 'fonts', 'git-submodules']);

gulp.task('develop', ['set-dev-node-env', 'compile-babel', 'compile-sass'], function () {
  electron.start(["--remote-debugging-port=9992"]) // Electron Connect, Auto Reload
  gulp.watch(config.sass, ['compile-sass', 'reloadSASS']);
  gulp.watch(config.jsNext, ['compile-babel', 'reloadJS']);
});

gulp.task('production', ['set-prod-node-env'], function () {
  electron.start() // Electron Connect, Auto Reload
});


/* compile tasks */

gulp.task('compile-babel', function () {
  return gulp.src(config.jsNext)
    .pipe(sourcemaps.init())
    .pipe(babel())
    .pipe(sourcemaps.write('./'))
    .pipe(gulp.dest(config.js2015));
});

gulp.task('compile-sass', function () {
  return gulp.src(config.sass)
    .pipe(sass.sync().on('error', sass.logError))
    .pipe(gulp.dest(config.css));
});


/*  Reload After Compile with Electron Connect */

gulp.task('reloadJS', ['compile-babel'], function () {
  console.log('#JS Changed: Reload Electron')
  electron.reload()
})

gulp.task('reloadSASS', ['compile-sass'], function () {
  console.log('#SASS Changed: Reload Electron')
  electron.reload()
})


/** usefull? **/
gulp.task('debug', ['set-debug-node-env'], function () {
  electron.start(["--remote-debugging-port=9992"]) // Electron Connect, Auto Reload
  gulp.watch(config.sass, ['compile-sass', 'reloadSASS']);
  gulp.watch(config.jsNext, ['compile-babel', 'reloadJS']);
});

/**
 * Google Webfonts
 */

const googleWebFontsOptions = { };

gulp.task('fonts', function () {
	return gulp.src(config.fontsList)
		.pipe(googleWebFonts(googleWebFontsOptions))
		.pipe(gulp.dest(config.fontsDest));
	});

gulp.task('git-submodules', function() {

  // Mozilla PDF.JS branch gh-pages
  // https://github.com/mozilla/pdf.js/wiki/Setup-PDF.js-in-a-website
  // git.addSubmodule('https://github.com/mozilla/pdf.js', 'library/pdfjs-gh-pages', { args: '-b gh-pages'});
});


/**
 * NODE_ENV / Environment Variables
 * http://stackoverflow.com/questions/28787457/how-can-i-set-an-environment-variable-from-gulp
 */

gulp.task('set-dev-node-env', function() {
    return process.env.NODE_ENV = 'development';
});

gulp.task('set-prod-node-env', function() {
    return process.env.NODE_ENV = 'production';
});

gulp.task('set-debug-node-env', function() {
    return process.env.NODE_ENV = 'debug';
});