gulpfile.js

var _ = require('underscore');
var autoprefix = require('gulp-autoprefixer');
var es = require('event-stream');
var gulp = require('gulp');
var karma = require('gulp-karma');
var livereload = require('gulp-livereload');
var lr = require('tiny-lr');
var protractor = require('gulp-protractor').protractor;
var replace = require('gulp-replace');
var rjs = require('gulp-requirejs');
var sass = require('gulp-ruby-sass');
var spawn = require('child_process').spawn;
var uglify = require('gulp-uglify');
var webdriver = require('gulp-protractor').webdriver;

var handleError = function (err) {
  console.log(err.name, ' in ', err.plugin, ': ', err.message);
  this.emit('end');
};

var server = lr();

// Bump version
gulp.task('bump-version', function () {
  spawn('git', ['rev-parse', '--abbrev-ref', 'HEAD']).stdout.on('data', function (data) {

    // Get current branch name
    var branch = data.toString();

    // Verify we're on a release branch
    if (/^release\/.*/.test(branch)) {
      var newVersion = branch.split('/')[1].trim();

      // Update client index.html
      gulp.src('./source/index.html')
        .pipe(replace(/(bust=v)(\d*\.?)*/g, '$1' + newVersion))
        .pipe(gulp.dest('./source'));

      var updateJson = function (file) {
        gulp.src(file)
          .pipe(replace(/("version" *: *")([^"]*)(",)/g, '$1' + newVersion + '$3'))
          .pipe(gulp.dest('./'));
      };

      updateJson('./bower.json');
      updateJson('./package.json');

      console.log('Successfully bumped to ' + newVersion);
    } else {
      console.error('This task should be executed on a release branch!');
    }
  });
});

// Copy
gulp.task('copy', ['sass'], function () {
  return es.concat(
    // update index.html to work when built
    gulp.src(['source/index.html'])
      .pipe(gulp.dest('build')),
    // copy config-require
    gulp.src(['source/js/config-require.js'])
      .pipe(uglify().on('error', handleError))
      .pipe(gulp.dest('build/js')),
    // copy template files
    gulp.src(['source/js/**/*.html'])
      .pipe(gulp.dest('build/js')),
    // copy vendor files
    gulp.src(['source/vendor/**/*'])
      .pipe(gulp.dest('build/vendor')),
    // copy assets
    gulp.src(['source/assets/**/*'])
      .pipe(gulp.dest('build/assets')),
    // minify requirejs
    gulp.src(['build/vendor/requirejs/require.js'])
      .pipe(uglify().on('error', handleError))
      .pipe(gulp.dest('build/vendor/requirejs')),
    // minify domReady
    gulp.src(['build/vendor/requirejs-domready/domReady.js'])
      .pipe(uglify().on('error', handleError))
      .pipe(gulp.dest('build/vendor/requirejs-domready'))
  );
});

// JavaScript
gulp.task('js', function () {
  var configRequire = require('./source/js/config-require.js');
  var configBuild = {
    baseUrl: 'source/js',
    insertRequire: ['main'],
    name: 'main',
    wrap: true
  };
  var config = _(configBuild).extend(configRequire);

  return gulp.src(['source/js/main.js'])
    .pipe(rjs(config).on('error', handleError))
    .pipe(uglify().on('error', handleError))
    .pipe(gulp.dest('build/js/'))
    .pipe(livereload(server));
});

// Karma
gulp.task('karma', function () {
  return gulp.src(['no need to supply files because everything is in config file'])
    .pipe(karma({
      configFile: 'karma.conf.js',
      action: 'watch'
    }).on('error', handleError));
});

gulp.task('karma-ci', function () {
  return gulp.src(['no need to supply files because everything is in config file'])
    .pipe(karma({
      configFile: 'karma-compiled.conf.js',
      action: 'run'
    }).on('error', handleError));
});

// Sass
gulp.task('sass', function () {
  return gulp.src(['source/sass/*.scss', '!source/sass/_*.scss'])
    .pipe(sass({
      bundleExec: true,
      require: [
        './source/sass/sass_extensions.rb',
        'sass-globbing'
      ],
      style: 'compressed'
    }).on('error', handleError))
    .pipe(autoprefix().on('error', handleError))
    .pipe(gulp.dest('source/assets/css'))
    .pipe(livereload(server));
});

// Protractor
gulp.task('protractor', function () {
  return gulp.src('source/js/**/*.e2e.js')
    .pipe(protractor({ configFile: 'p.conf.js' }));
});

gulp.task('protractor-ci', function () {
  return gulp.src('source/js/**/*.e2e.js')
    .pipe(protractor({ configFile: 'p-compiled.conf.js' }));
});

gulp.task('webdriver', webdriver);

// Watch
gulp.task('watch', ['sass', 'karma'], function () {
  gulp.watch('source/sass/**/*.scss', function () {
    gulp.run('sass');
  });

  // enable Livereload
  server.listen(35729, function (err) {
    if (err) {
      return console.log(err);
    }

    gulp.watch([
      'source/assets/*.css',
      'source/index.html',
      'source/js/**/*',
      '!source/js/**/*.spec.js'
    ]);
  });
});

gulp.task('default', ['js', 'copy', 'karma-ci', 'protractor-ci']);