'use strict';
process.env.NODE_ENV = 'production';

const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const ProgressPlugin = require('webpack/lib/ProgressPlugin');
const BabelMinifyPlugin = require('babel-minify-webpack-plugin');
// const OfflinePlugin = require('offline-plugin')
const base = require('./webpack.base');
const config = require('./config');
const rimraf = require('rimraf');
const distFolder = 'dist/';

// Clear out build folder
rimraf.sync(distFolder, { rmdirSync: true });

base.devtool = 'source-map';
base.module.loaders.push(
  {
    test: /\.css$/,
    use: ExtractTextPlugin.extract({
      fallback: 'style-loader',
      use: 'css-loader'
    })
  },
  {
    test: /\.scss$/,
    use: ExtractTextPlugin.extract({
      fallback: 'style-loader',
      use: ['css-loader', 'sass-loader']
    })
  },
  {
    test: /\.less$/,
    use: ExtractTextPlugin.extract({
      fallback: 'style-loader',
      use: ['css-loader', 'less-loader']
    })
  }
);
// a white list to add dependencies to vendor chunk
base.entry.vendor = config.vendor;
// use hash filename to support long-term caching
base.output.filename = '[name].[chunkhash:8].js';
// add webpack plugins
base.plugins.push(
  new ProgressPlugin(),
  new ExtractTextPlugin('[name].[chunkhash:8].css'),
  new webpack.DefinePlugin({
    'process.env.NODE_ENV': JSON.stringify('production')
  }),
  new BabelMinifyPlugin(undefined, {
    comments: false
  }),
  // extract vendor chunks
  new webpack.optimize.CommonsChunkPlugin({
    name: 'vendor',
    filename: 'vendor.[chunkhash:8].js'
  })
  // For progressive web apps
  // new OfflinePlugin({
  //   relativePaths: false,
  //   AppCache: false,
  //   ServiceWorker: {
  //     events: true
  //   }
  // })
);

// minimize webpack output
base.stats = {
  // Add children information
  children: false,
  // Add chunk information (setting this to `false` allows for a less verbose output)
  chunks: false,
  // Add built modules information to chunk information
  chunkModules: false,
  chunkOrigins: false,
  modules: false
};

module.exports = base;