// Require path.
const path = require('path');

const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const ManifestPlugin = require('webpack-manifest-plugin');
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");

// Configuration object.
const config = {

    entry: {
        shh_base_style: './assets/app.js'
    },

    // Create the output files.
    // One for each of our entry points.
    output: {
        // [name] allows for the entry object keys to be used as file names.
        filename: 'js/[name].[contenthash].js',
        // Specify the path to the JS files.
        path: path.resolve( __dirname, 'dist' )
    },
    mode: "development",
    // Setup a loader to transpile down the latest and great JavaScript so older browsers
    // can understand it.
    module: {
        rules: [
            {
                // Look for any .js files.
                test: /\.js$/,
                // Exclude the node_modules folder.
                //exclude: /node_modules/,
                // Use babel loader to transpile the JS files.
                use: [
                    {
                        loader: 'babel-loader',
                        options: {
                            presets: ['@babel/preset-env']
                        },
                    }]
            },
            {
                // Apply rule for .sass, .scss or .css files
                test: /\.(sa|sc|c)ss$/,

                // Set loaders to transform files.
                // Loaders are applying from right to left(!)
                // The first loader will be applied after others
                use: [
                    {
                        // After all CSS loaders we use plugin to do his work.
                        // It gets all transformed CSS and extracts it into separate
                        // single bundled file
                        loader: MiniCssExtractPlugin.loader
                    },
                    {
                        // This loader resolves url() and @imports inside CSS
                        loader: "css-loader",
                    },
                    /*{
                        // Then we apply postCSS fixes like autoprefixer and minifying
                        loader: "postcss-loader"
                    },*/
                    {
                        // First we transform SASS to standard CSS
                        loader: "sass-loader",
                        options: {
                            implementation: require("sass"),
                            sourceMap: true,
                        }
                    }
                ]
            },
            {
                test: /\.(png|jpe?g|gif|svg)$/i,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[name].[ext]',
                            outputPath: 'images/',
                            publicPath: '../images/',
                        }
                    },
                ],
            },
            {
                test: /\.(woff(2)?|ttf|eot)(\?v=\d+\.\d+\.\d+)?$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[name].[ext]',
                            outputPath: 'fonts/',
                            publicPath: '../fonts/',
                        }
                    }
                ]
            }
        ]
    },
    optimization: {
        minimizer: [
            // For webpack@5 you can use the `...` syntax to extend existing minimizers (i.e. `terser-webpack-plugin`), uncomment the next line
            // `...`,
            new CssMinimizerPlugin(),
        ],
        minimize: true,
    },
    plugins: [

        new MiniCssExtractPlugin({
            filename: "css/[name].[contenthash].css"
        }),
        new CleanWebpackPlugin(),
        new ManifestPlugin({writeToFileEmit: true}),


    ],
    watchOptions: {
        aggregateTimeout: 300,
        ignored: /node_modules/,
        poll: 1000
    }
}

// Export the config object.
module.exports = config;