gulpfile.js

/* eslint-disable */
'use strict';

/* global process */

var babel = require('babelify');
require('babel-register');
var browserSync = require('browser-sync');
var del = require('del');
var gulp = require('gulp');
var gulpMocha = require('gulp-mocha');
var gutil = require('gulp-util');
var nunjucksRender = require('gulp-nunjucks-render');
var runSequence = require('run-sequence');
var sass = require('gulp-sass');
var selenium = require('selenium-standalone');
var webdriver = require('gulp-webdriver');
var eslint = require('gulp-eslint');

var sourcemaps = require('gulp-sourcemaps');
var source = require('vinyl-source-stream');
var buffer = require('vinyl-buffer');
var browserify = require('browserify');

// Instances

var devBrowserSync = browserSync.create();
var testingBrowserSync = browserSync.create();
var seleniumServer;

// Source code generation
/////////////////////////

function imagesTask() {
  return gulp
    .src([
      'app/images/**/*+(png|jpg|jpeg|gif|svg)',
      'node_modules/leaflet/dist/images/**/*'
    ])
    .pipe(gulp.dest('build/images'));
}
gulp.task('compile:images', imagesTask);

function fontsTask() {
  return gulp
    .src('node_modules/font-awesome/fonts/**/*')
    .pipe(gulp.dest('build/fonts'));
}
gulp.task('compile:fonts', fontsTask);

function sassTask() {
  return gulp
    .src('app/scss/**/*.scss')
    .pipe(sass({includePaths: ['node_modules']}))
    .pipe(gulp.dest('build/css'));
}
gulp.task('compile:sass', sassTask);

function compileJsTask() {
  var bundler =
    browserify(
      './app/es/app.es',
      {debug: true}
    ).transform(babel);

  function rebundle() {
    return bundler
      .bundle()
      .on('error', function(err) { gutil.log(err); this.emit('end'); })
      .pipe(source('build.js'))
      .pipe(buffer())
      .pipe(sourcemaps.init({ loadMaps: true }))
      .pipe(sourcemaps.write('./'))
      .pipe(gulp.dest('./build/js'));
  }

  return rebundle();
}
gulp.task('compile:js', compileJsTask);

function nunjucksTask() {
  return gulp
    .src('app/pages/**/*.+(html)')
    .pipe(
      nunjucksRender({
        path: ['app/templates']
      })
    )
  .pipe(gulp.dest('build'));
}
gulp.task('compile:html', nunjucksTask);

gulp.task('compile', ['compile:html', 'compile:js', 'compile:sass', 'compile:images', 'compile:fonts']);

// Linting
//////////

function eslintTask() {
  return gulp.src(['**/*.es'])
    .pipe(eslint())
    .pipe(eslint.format());
}
gulp.task('lint', eslintTask);

// Development web server
/////////////////////////

function browserSyncTask( done ) {
  devBrowserSync.init({
    server: {
      baseDir: 'build'
    },
    host: '0.0.0.0',
    browser: ['chromium-browser']
  });
  done();
}
gulp.task('browserSync', browserSyncTask);

function watchTask( done ) {
  gulp.watch('app/scss/**/*.scss', ['compile:sass']);
  gulp.watch('app/es/**/*.es', ['compile:js']);
  gulp.watch('app/templates/**/*', ['compile:html']);
  gulp.watch('app/pages/**/*', ['compile:html']);
  gulp.watch('app/images/**/*', ['compile:images']);
  gulp.watch('build/**/*', devBrowserSync.reload);
  done();
}
gulp.task('watch', ['browserSync', 'compile'], watchTask);

// Unit testing
///////////////

function testUnitTask() {
  return gulp
    .src(['test/unit/**/*.+(js|es)'])
    .pipe(gulpMocha({
       timeout: 5000
    }));
}
gulp.task('test:unit', testUnitTask);

// End-to-end testing in web server
///////////////////////////////////

function nunjucksFixturesTask() {
  return gulp
    .src('test/fixtures/pages/**/*.+(html)')
    .pipe(
      nunjucksRender({
        path: ['app/templates']
      })
    )
  .pipe(gulp.dest('build'));
}
gulp.task('compile:fixtures', nunjucksFixturesTask);

function testingBrowserSyncTask( done ) {
  testingBrowserSync.init({
    server: {
      baseDir: 'build'
    },
    port: 9000,
    browser: 'chromium-browser'
  });
  done();
}
gulp.task('testingBrowserSync', testingBrowserSyncTask);

gulp.task('test:server',
          ['compile:js', 'compile:sass', 'compile:images', 'compile:fixtures', 'compile:fonts'],
          testingBrowserSyncTask );

function seleniumStandaloneTask(done) {
  selenium.install( {
    logger: gutil.log
  }, function() {
    selenium.start( function( err, child ) {
      if (err) {
        return done(err);
      }
      else {
        seleniumServer = child;
        return done();
      }
    } );
  });
}
gulp.task( 'test:selenium', seleniumStandaloneTask );

function functionalTestTask() {
  return gulp
    .src('wdio.conf.js')
    .pipe(webdriver())
    .on('error', function() {
      seleniumServer.kill();
      process.exit(1);
    });
}

gulp.task('test:functional', ['test:server', 'test:selenium'], functionalTestTask );
gulp.task('test:functional-and-cleanup', ['test:functional'], function() {
  testingBrowserSync.cleanup();
  seleniumServer.kill();
} );

gulp.task('test', ['test:unit', 'test:functional-and-cleanup'] );

// Distribution
///////////////

function cleanBuildTask() {
  return del.sync('build');
}
gulp.task('build:clean', cleanBuildTask);

function buildTask(callback) {
  runSequence(
    'build:clean',
    'compile',
    callback
  );
}
gulp.task('build', buildTask);

gulp.task('default', buildTask);