/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
var webpack = require('webpack');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var config = require('./webpack.config.base');
var getClientEnvironment = require('../env');
var paths = require('../paths');

// Get environment variables to inject into our app.
var env = getClientEnvironment();

// Assert this just to be safe.
// Development builds of React are slow and not intended for production.
if (env['process.env.NODE_ENV'] !== '"production"') {
  throw new Error('Production builds must have NODE_ENV=production.');
}

// Don't attempt to continue if there are any errors.
config.bail = true;

config.plugins = [
  new webpack.optimize.CommonsChunkPlugin('vendor', 'js/vendor.[chunkhash:8].js'),

  new ExtractTextPlugin('css/sonar.[chunkhash:8].css', { allChunks: true }),

  new HtmlWebpackPlugin({
    inject: false,
    template: paths.appHtml,
    minify: {
      removeComments: true,
      collapseWhitespace: true,
      removeRedundantAttributes: true,
      useShortDoctype: true,
      removeEmptyAttributes: true,
      removeStyleLinkTypeAttributes: true,
      keepClosingSlash: true,
      minifyJS: true,
      minifyCSS: true,
      minifyURLs: true
    }
  }),

  // Makes some environment variables available to the JS code, for example:
  // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
  // It is absolutely essential that NODE_ENV was set to production here.
  // Otherwise React will be compiled in the very slow development mode.
  new webpack.DefinePlugin(env),

  // This helps ensure the builds are consistent if source hasn't changed:
  new webpack.optimize.OccurrenceOrderPlugin(),

  // Try to dedupe duplicated modules, if any:
  new webpack.optimize.DedupePlugin(),

  // Minify the code.
  new webpack.optimize.UglifyJsPlugin({
    compress: {
      screw_ie8: true, // React doesn't support IE8
      warnings: false
    },
    mangle: {
      screw_ie8: true
    },
    output: {
      comments: false,
      screw_ie8: true
    }
  })
];

module.exports = config;