import path from 'path'
import webpack from 'webpack'
import { VueLoaderPlugin } from 'vue-loader'
import SvgStore from 'webpack-svgstore-plugin'
import CopyWebpackPlugin from 'copy-webpack-plugin'
import HtmlWebpackPlugin from 'html-webpack-plugin'
import ManifestPlugin from 'webpack-manifest-plugin'
import ImageminWebpackPlugin from 'imagemin-webpack-plugin'
import MiniCssExtractPlugin from 'mini-css-extract-plugin'
import OptimizeCssAssetsPlugin from 'optimize-css-assets-webpack-plugin'
import { ifDev, ifProd, removeEmpty } from './utilities'
import { rootPath, srcPath, buildPath } from './paths'

export default {

  mode: ifDev('development', 'production'),

  entry: {
    app: removeEmpty([
      ifDev('webpack-hot-middleware/client?reload=true'),
      `${srcPath}/assets/sass/main.scss`,
      `${srcPath}/main.js`,
    ]),
  },

  output: {
    path: `${buildPath}/`,
    filename: `assets/js/[name]${ifProd('.[hash]', '')}.js`,
    chunkFilename: `assets/js/[name]${ifProd('.[chunkhash]', '')}.js`,
    publicPath: '/',
  },

  resolve: {
    extensions: ['.js', '.scss', '.vue'],
    alias: {
      vue$: 'vue/dist/vue.esm.js',
      modules: path.resolve(rootPath, '../node_modules'),
      images: `${srcPath}/assets/images`,
      fonts: `${srcPath}/assets/fonts`,
      variables: `${srcPath}/assets/sass/variables`,
      tiptap: path.resolve(rootPath, '../packages/tiptap/src'),
      'tiptap-commands': path.resolve(rootPath, '../packages/tiptap-commands/src'),
      'tiptap-utils': path.resolve(rootPath, '../packages/tiptap-utils/src'),
      'tiptap-models': path.resolve(rootPath, '../packages/tiptap-models/src'),
      'tiptap-extensions': path.resolve(rootPath, '../packages/tiptap-extensions/src'),
    },
    modules: [
      srcPath,
      path.resolve(rootPath, '../node_modules'),
    ],
  },

  devtool: ifDev('eval-source-map', 'source-map'),

  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
      },
      {
        test: /\.js$/,
        exclude: [/node_modules/],
        use: {
          loader: ifDev('babel-loader?cacheDirectory=true', 'babel-loader'),
          options: {
            presets: [
              '@babel/preset-env',
            ],
            plugins: [
              '@babel/plugin-syntax-dynamic-import',
            ],
          },
        },
      },
      {
        test: /\.css$/,
        use: removeEmpty([
          ifDev('vue-style-loader', MiniCssExtractPlugin.loader),
          'css-loader',
          'postcss-loader',
        ]),
      },
      {
        test: /\.scss$/,
        use: removeEmpty([
          ifDev('vue-style-loader', MiniCssExtractPlugin.loader),
          'css-loader',
          'postcss-loader',
          'sass-loader',
        ]),
      },
      {
        test: /\.(png|jpe?g|gif|svg|ico)(\?.*)?$/,
        use: {
          loader: 'file-loader',
          options: {
            name: `assets/images/[name]${ifProd('.[hash]', '')}.[ext]`,
          },
        },
      },
      {
        test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
        use: {
          loader: 'file-loader',
          options: {
            name: `assets/fonts/[name]${ifProd('.[hash]', '')}.[ext]`,
          },
        },
      },
    ],
  },

  // splitting out the vendor
  optimization: {
    namedModules: true,
    splitChunks: {
      name: 'vendor',
      minChunks: 2,
    },
    noEmitOnErrors: true,
    // concatenateModules: true,
  },

  plugins: removeEmpty([

    // create manifest file for server-side asset manipulation
    new ManifestPlugin({
      fileName: 'assets/manifest.json',
      writeToFileEmit: true,
    }),

    // define env
    // new webpack.DefinePlugin({
    // 	'process.env': {},
    // }),

    // copy static files
    new CopyWebpackPlugin([
      {
        context: `${srcPath}/assets/static`,
        from: { glob: '**/*', dot: false },
        to: `${buildPath}/assets`,
      },
      {
        context: `${srcPath}/assets/static`,
        from: { glob: '**/*', dot: false },
        to: `${buildPath}/assets/[path][name].[hash].[ext]`,
      },
    ]),

    // enable hot reloading
    ifDev(new webpack.HotModuleReplacementPlugin()),

    // html
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: `${srcPath}/index.html`,
      inject: true,
      minify: ifProd({
        removeComments: true,
        collapseWhitespace: true,
        removeAttributeQuotes: true,
      }),
      buildVersion: new Date().valueOf(),
      chunksSortMode: 'none',
    }),

    new VueLoaderPlugin(),

    // create css files
    ifProd(new MiniCssExtractPlugin({
      filename: `assets/css/[name]${ifProd('.[hash]', '')}.css`,
      chunkFilename: `assets/css/[name]${ifProd('.[hash]', '')}.css`,
    })),

    // minify css files
    ifProd(new OptimizeCssAssetsPlugin({
      cssProcessorOptions: {
        reduceIdents: false,
        autoprefixer: false,
        zindex: false,
        discardComments: {
          removeAll: true,
        },
      },
    })),

    // svg icons
    new SvgStore({
      prefix: 'icon--',
      svgoOptions: {
        plugins: [
          { cleanupIDs: false },
          { collapseGroups: false },
          { removeTitle: true },
        ],
      },
    }),

    // image optimization
    new ImageminWebpackPlugin({
      optipng: ifDev(null, {
        optimizationLevel: 3,
      }),
      jpegtran: ifDev(null, {
        progressive: true,
        quality: 80,
      }),
      svgo: ifDev(null, {
        plugins: [
          { cleanupIDs: false },
          { removeViewBox: false },
          { removeUselessStrokeAndFill: false },
          { removeEmptyAttrs: false },
        ],
      }),
    }),

  ]),

  node: {
    fs: 'empty',
  },

}