const path = require("path");
const TerserJSPlugin = require('terser-webpack-plugin');
const HtmlPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const OptimizeCSSAssetsPlugin = require('css-minimizer-webpack-plugin');
const webpack = require("webpack");

function getCurrentProjectname() {
	let pathSplit = __dirname.split(path.sep);

	return pathSplit[pathSplit.length - 1];
}

module.exports = {
	stats: {
		errorDetails: true,
	},
	plugins: [
		new CleanWebpackPlugin(),
		new HtmlPlugin(
			{
				template: "./ui/frontend/errors_template.tpl",
				filename: path.resolve(__dirname, './ui/frontend/errors.tpl'),
				chunks: ["frontend"]
			}
		),
		new HtmlPlugin(
			{
				template: "./ui/frontend/masterpage_template.tpl",
				filename: path.resolve(__dirname, './ui/frontend/masterpage.tpl'),
				chunks: ["frontend"]
			}
		),
		new MiniCssExtractPlugin({ filename: "styles.[contenthash].css" }),
		new webpack.ProvidePlugin({
			$: 'jquery',
			jQuery: 'jquery',
			"window.jQuery": 'jquery'
		})
	],
	module: {
		rules: [
			{
				// For css...
				test: /\.(css|scss)$/,
				// ...use this loaders
				use: [
					{ loader: MiniCssExtractPlugin.loader },
					{ loader: "css-loader" },
					{ loader: "sass-loader" }
				]
			},
			// Import various assets
			{
				test: /\.(jpg|png|woff|woff2|eot|ttf|svg)$/,
				use: [
					{ loader: 'url-loader', options: '?limit=100000' }
				]
			}
		]
	},
	optimization: {
		minimizer: [
			new TerserJSPlugin(
				// Discard Comments
				{ terserOptions: { output: { comments: false } }, parallel: 4 }
			),
			new OptimizeCSSAssetsPlugin(
				// Discard Comments
				{ minimizerOptions: { preset: ['default', { discardComments: { removeAll: true } }] } }
			)
		],
	},
	entry: {
		"frontend": "./ui/frontend/js/frontend.js"
	},
	output: {
		publicPath: '/' + getCurrentProjectname() + '/assets/frontend/',
		path: path.resolve(__dirname, "assets/frontend/"),
		filename: "[name].[contenthash].js"
	},
};