const path = require('path')
const webpack = require('webpack')
const Dotenv = require('dotenv-webpack')
const srcDir = path.resolve(__dirname, '..', 'scss')
const distDir = path.resolve(__dirname, '..', 'dist')
const { NODE_ENV = 'development' } = process.env

module.exports = {
  context: srcDir,
  devtool: 'source-map',
  entry: ['./index.js'],
  output: {
    // The destination file name concatenated with hash (generated whenever you change your code).
    // The hash is really useful to let the browser knows when it should get a new bundle
    // or use the one in cache
    filename: 'main.js',
    // The destination folder where to put the output bundle
    path: distDir,
    // Wherever resource (css, js, img) you call <script src="..."></script>,
    // or css, or img use this path as the root
    publicPath: '/',
    // At some point you'll have to debug your code, that's why I'm giving you
    // for free a source map file to make your life easier
    sourceMapFilename: 'main.map'
  },
  devServer: {
    contentBase: srcDir,
    // match the output path
    publicPath: '/',
    // match the output `publicPath`
    historyApiFallback: true,
    port: 5000
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
        include: srcDir
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: [
          'style-loader',
          'css-loader',
          {
            loader: 'postcss-loader',
            options: {
              plugins: () => [
                require('autoprefixer')({
                  browsers: [
                    'last 3 version',
                    'ie >= 10' // supports IE from version 10 onwards
                  ]
                })
              ]
            }
          },
          'sass-loader'
        ]
      },
      {
        test: /\.hbs$/,
        loader: 'handlebars-loader',
        query: {
          partialDirs: [path.join(srcDir, 'templates', 'partials')],
          helperDirs: [path.join(srcDir, 'templates', 'helpers')]
        }
      },
      {
        test: /\.(eot?.+|svg?.+|ttf?.+|zip?.+|ico?.+|otf?.+|woff?.+|woff2?.+)$/,
        use: 'file-loader?[path][name].[ext]'
      },
      {
        test: /\.(jpg|jpeg|png|gif|ico)$/,
        use: [
          // if less than 10Kb, bundle the asset inline, if greater, copy it to the dist/assets
          // folder using file-loader
          'url-loader?limit=1024&[path][name].[ext]'
        ],
        include: path.resolve(srcDir, 'assets')
      }
    ]
  },
  plugins: [
    new webpack.NamedModulesPlugin(),
    // environment globals added must be added to .eslintrc
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify(NODE_ENV)
      },
      NODE_ENV: NODE_ENV,
      __DEV__: NODE_ENV === 'development',
      __PROD__: NODE_ENV === 'production'
    }),
    new webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery',
      'window.jQuery': 'jquery'
    })
  ]
}