const webpack = require('webpack')
const helpers = require('./helpers')

/*
 * Webpack Plugins
 */

var CopyWebpackPlugin = (CopyWebpackPlugin = require('copy-webpack-plugin'), CopyWebpackPlugin.default || CopyWebpackPlugin)
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ForkCheckerPlugin = require('awesome-typescript-loader').ForkCheckerPlugin

/*
 * Webpack Constants
 */
const METADATA = {
  title: 'PeerTube',
  baseUrl: '/'
}

/*
 * Webpack configuration
 *
 * See: http://webpack.github.io/docs/configuration.html#cli
 */
module.exports = {
  /*
   * Static metadata for index.html
   *
   * See: (custom attribute)
   */
  metadata: METADATA,

  /*
   * Cache generated modules and chunks to improve performance for multiple incremental builds.
   * This is enabled by default in watch mode.
   * You can pass false to disable it.
   *
   * See: http://webpack.github.io/docs/configuration.html#cache
   */
  // cache: false,

  /*
   * The entry point for the bundle
   * Our Angular.js app
   *
   * See: http://webpack.github.io/docs/configuration.html#entry
   */
  entry: {
    'polyfills': './src/polyfills.ts',
    'vendor': './src/vendor.ts',
    'main': './src/main.ts'
  },

  /*
   * Options affecting the resolving of modules.
   *
   * See: http://webpack.github.io/docs/configuration.html#resolve
   */
  resolve: {
    /*
     * An array of extensions that should be used to resolve modules.
     *
     * See: http://webpack.github.io/docs/configuration.html#resolve-extensions
     */
    extensions: [ '', '.ts', '.js', '.scss' ],

    // Make sure root is src
    root: helpers.root('src'),

    // remove other default values
    modulesDirectories: [ 'node_modules' ],

    packageAlias: 'browser'

  },

  output: {
    publicPath: '/client/'
  },

  /*
   * Options affecting the normal modules.
   *
   * See: http://webpack.github.io/docs/configuration.html#module
   */
  module: {
    /*
     * An array of applied pre and post loaders.
     *
     * See: http://webpack.github.io/docs/configuration.html#module-preloaders-module-postloaders
     */
    preLoaders: [

      /*
       * Tslint loader support for *.ts files
       *
       * See: https://github.com/wbuchwalter/tslint-loader
       */
      // { test: /\.ts$/, loader: 'tslint-loader', exclude: [ helpers.root('node_modules') ] },

      /*
       * Source map loader support for *.js files
       * Extracts SourceMaps for source files that as added as sourceMappingURL comment.
       *
       * See: https://github.com/webpack/source-map-loader
       */
      {
        test: /\.js$/,
        loader: 'source-map-loader',
        exclude: [
          // these packages have problems with their sourcemaps
          helpers.root('node_modules/rxjs'),
          helpers.root('node_modules/@angular')
        ]
      }

    ],

    /*
     * An array of automatically applied loaders.
     *
     * IMPORTANT: The loaders here are resolved relative to the resource which they are applied to.
     * This means they are not resolved relative to the configuration file.
     *
     * See: http://webpack.github.io/docs/configuration.html#module-loaders
     */
    loaders: [

      /*
       * Typescript loader support for .ts and Angular 2 async routes via .async.ts
       *
       * See: https://github.com/s-panferov/awesome-typescript-loader
       */
      {
        test: /\.ts$/,
        loader: 'awesome-typescript-loader',
        exclude: [/\.(spec|e2e)\.ts$/]
      },

      /*
       * Json loader support for *.json files.
       *
       * See: https://github.com/webpack/json-loader
       */
      {
        test: /\.json$/,
        loader: 'json-loader'
      },

      {
        test: /\.scss$/,
        exclude: /node_modules/,
        loaders: [ 'raw-loader', 'sass-loader' ]
      },

      {
        test: /\.(woff2?|ttf|eot|svg)$/,
        loader: 'url?limit=10000&name=assets/fonts/[hash].[ext]'
      },

      /* Raw loader support for *.html
       * Returns file content as string
       *
       * See: https://github.com/webpack/raw-loader
       */
      {
        test: /\.html$/,
        loader: 'raw-loader',
        exclude: [ helpers.root('src/index.html') ]
      }

    ]

  },

  sassLoader: {
    precision: 10
  },

  /*
   * Add additional plugins to the compiler.
   *
   * See: http://webpack.github.io/docs/configuration.html#plugins
   */
  plugins: [

    /*
     * Plugin: ForkCheckerPlugin
     * Description: Do type checking in a separate process, so webpack don't need to wait.
     *
     * See: https://github.com/s-panferov/awesome-typescript-loader#forkchecker-boolean-defaultfalse
     */
    new ForkCheckerPlugin(),

    /*
     * Plugin: OccurenceOrderPlugin
     * Description: Varies the distribution of the ids to get the smallest id length
     * for often used ids.
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#occurrenceorderplugin
     * See: https://github.com/webpack/docs/wiki/optimization#minimize
     */
    new webpack.optimize.OccurenceOrderPlugin(true),

    /*
     * Plugin: CommonsChunkPlugin
     * Description: Shares common code between the pages.
     * It identifies common modules and put them into a commons chunk.
     *
     * See: https://webpack.github.io/docs/list-of-plugins.html#commonschunkplugin
     * See: https://github.com/webpack/docs/wiki/optimization#multi-page-app
     */
    new webpack.optimize.CommonsChunkPlugin({
      name: [ 'polyfills', 'vendor' ].reverse()
    }),

    /*
     * Plugin: CopyWebpackPlugin
     * Description: Copy files and directories in webpack.
     *
     * Copies project static assets.
     *
     * See: https://www.npmjs.com/package/copy-webpack-plugin
     */
    new CopyWebpackPlugin([
      {
        from: 'src/assets',
        to: 'assets'
      },
      {
        from: 'node_modules/webtorrent/webtorrent.min.js',
        to: 'assets/webtorrent'
      }
    ]),

    /*
     * Plugin: HtmlWebpackPlugin
     * Description: Simplifies creation of HTML files to serve your webpack bundles.
     * This is especially useful for webpack bundles that include a hash in the filename
     * which changes every compilation.
     *
     * See: https://github.com/ampedandwired/html-webpack-plugin
     */
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      chunksSortMode: 'dependency'
    })

  ],

  /*
   * Include polyfills or mocks for various node stuff
   * Description: Node configuration
   *
   * See: https://webpack.github.io/docs/configuration.html#node
   */
  node: {
    global: 'window',
    crypto: 'empty',
    fs: 'empty',
    events: true,
    module: false,
    clearImmediate: false,
    setImmediate: false
  }

}