/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const merge = require('webpack-merge');
const TerserJSPlugin = require('terser-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');

const path = require('path');

const commonConfig = require('./webpack.common');

module.exports = merge(commonConfig, {
    // Tells webpack to use its built-in optimizations accordingly
    mode: 'production',

    // Source maps
    devtool: 'source-map',

    output: {
        // add the content hash for auto cache-busting
        filename: '[name].[contenthash].js'
    },

    optimization: {
        minimizer: [
            // Minify JavaScript
            new TerserJSPlugin({}),

            // Minify CSS
            new OptimizeCSSAssetsPlugin({})
        ],
    },

    plugins: [
        // Create CSS files separately
        new MiniCssExtractPlugin({
            filename: '[name].[contenthash].css',
            chunkFilename: '[name].[contenthash].css'
        }),

        // Create HTML files to serve your webpack bundles
        new HtmlWebpackPlugin({
            template: 'webapp/template.html',
            filename: 'index.html',
            favicon: path.resolve(__dirname, 'webapp/images/registry-favicon.png')
        }),

        // Gzip
        new CompressionPlugin({
            test: /\.min\..+\.js$|\.min\..+\.css$/
        })
    ]
});