require('es6-promise').polyfill();

var path = require('path');
var webpack = require('webpack');
var autoprefixer = require('autoprefixer');
var precss = require('precss');
var functions = require('postcss-functions');
var ExtractTextPlugin = require("extract-text-webpack-plugin");

var postCssLoader = [
  'css-loader?module',
  '&localIdentName=[name]__[local]___[hash:base64:5]',
  '&disableStructuralMinification',
  '!postcss-loader'
];

var plugins = [
    new webpack.NoErrorsPlugin(),
    new webpack.optimize.DedupePlugin(),
    new ExtractTextPlugin('bundle.css'),
];

if (process.env.NODE_ENV === 'production') {
  plugins = plugins.concat([
    new webpack.optimize.UglifyJsPlugin({
      output: {comments: false},
      test: /bundle\.js?$/
    }),
    new webpack.DefinePlugin({
      'process.env': {NODE_ENV: JSON.stringify('production')}
    })
  ]);

  postCssLoader.splice(1, 1) // drop human readable names
};

var repo = __dirname

var config  = {
  entry: {
    bundle: path.join(repo, 'frontend/index.js')
  },
  output: {
    path: path.join(repo, 'build'),
    publicPath: "/assets/",
    filename: '[name].js'
  },
  plugins: plugins,
  module: {
    loaders: [
      {test: /\.css/, loader: ExtractTextPlugin.extract('style-loader', postCssLoader.join(''))},
      {test: /\.(png|gif)$/, loader: 'url-loader?name=[name]@[hash].[ext]&limit=5000'},
      {test: /\.svg$/, loader: 'url-loader?name=[name]@[hash].[ext]&limit=5000!svgo-loader?useConfig=svgo1'},
      {test: /\.(pdf|ico|jpg|eot|otf|woff|ttf|mp4|webm)$/, loader: 'file-loader?name=[name]@[hash].[ext]'},
      {test: /\.json$/, loader: 'json-loader'},
      {
        test: /\.jsx?$/,
        include: path.join(repo, 'frontend'),
        loaders: ['babel']
      }
    ]
  },
  resolve: {
    extensions: ['', '.js', '.jsx', '.css'],
    alias: {
      '#app': path.join(repo, 'frontend'),
      '#components': path.join(repo, 'frontend/components'),
      '#css': path.join(repo, 'frontend/css')
    }
  },
  svgo1: {
    multipass: true,
    plugins: [
      // by default enabled
      {mergePaths: false},
      {convertTransform: false},
      {convertShapeToPath: false},
      {cleanupIDs: false},
      {collapseGroups: false},
      {transformsWithOnePath: false},
      {cleanupNumericValues: false},
      {convertPathData: false},
      {moveGroupAttrsToElems: false},
      // by default disabled
      {removeTitle: true},
      {removeDesc: true}
    ]
  },
  postcss: function() {
    return [autoprefixer, precss({
      variables: {
        variables: require(path.join(repo, 'frontend/css/vars'))
      }
    }), functions({
      functions: require(path.join(repo, 'frontend/css/funcs'))
    })]
  }
};

module.exports = config;