/* eslint-disable import/no-extraneous-dependencies */

const { ProgressPlugin } = require('webpack');
const convert = require('koa-connect');
const history = require('connect-history-api-fallback');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ScriptExtHtmlWebpackPlugin = require('script-ext-html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
const commonPaths = require('./paths');
const Environment = require('./Environment');

module.exports = {
  mode: Environment[process.env.NODE_ENV],
  entry: commonPaths.entryPath,
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        loader: 'babel-loader',
        exclude: /(node_modules)/,
        options: {
          presets: ['@babel/preset-env'],
        },
      },
      {
        enforce: 'pre',
        test: /\.(js|jsx)$/,
        loader: 'eslint-loader',
        exclude: /(node_modules)/,
        options: {
          emitWarning: process.env.NODE_ENV !== Environment.production,
        },
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              outputPath: commonPaths.imagesFolder,
            },
          },
        ],
      },
      {
        test: /\.(woff2|ttf|woff|eot)$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              outputPath: commonPaths.fontsFolder,
            },
          },
        ],
      },
    ],
  },
  serve: {
    add: (app) => {
      app.use(convert(history()));
    },
    content: commonPaths.entryPath,
    dev: {
      publicPath: commonPaths.outputPath,
    },
    open: false,
  },
  resolve: {
    modules: ['src', 'node_modules'],
    extensions: ['*', '.js', '.jsx', '.css', '.scss'],
  },
  plugins: [
    new ProgressPlugin(),
    new HtmlWebpackPlugin({
      template: commonPaths.templatePath,
    }),
    new HardSourceWebpackPlugin({
      // Either an absolute path or relative to webpack's options.context.
      cacheDirectory: commonPaths.cachePath,
      // Either a string of object hash function given a webpack config.
      // node-object-hash on npm can be used to build this.
      configHash: (webpackConfig) => require('node-object-hash')({ // eslint-disable-line
        sort: false,
      }).hash(webpackConfig),
      // Either false, a string, an object, or a project hashing function.
      environmentHash: {
        root: process.cwd(),
        directories: [],
        files: [
          // Cache will get an unique hash based on those files
          // if either of them changes, new cache must be generated
          'package-lock.json',
          '.babelrc.js',
        ],
      },
      info: {
        mode: 'none',
        level: 'debug',
      },
      // Clean up large, old caches automatically.
      cachePrune: {
        // Caches younger than `maxAge` are not considered for deletion.
        // They must be at least this old in milliseconds.
        maxAge: 3 * 60 * 60 * 1000, // 3 hours
        // All caches together must be larger than `sizeThreshold` before any
        // caches will be deleted.
        // Together they must be at least this big in bytes.
        sizeThreshold: 50 * 1024 * 1024, // 50 MB
      },
    }),
    new ScriptExtHtmlWebpackPlugin({
      defaultAttribute: 'async',
    }),
    new CopyWebpackPlugin({
      patterns: [{
        from: commonPaths.assetOriginPath,
        to: commonPaths.assetPath,
      }],
    }),
  ],
};