const CopyPlugin = require("copy-webpack-plugin");
const { glob } = require("glob");
const path = require("path");

let config = {
    entry: glob.sync(path.resolve("./assets/js/specific/*.js")).reduce((obj, elem) => {
        let name = elem.substr(path.resolve("./assets/js/").length);
        name = name.substring(0, name.length - path.extname(name).length);
        obj[name] = elem;
        return obj;
    }, {
        site: [path.resolve("./assets/js/main.js"), path.resolve("./assets/scss/main.scss")],
    }),
    output: {
        filename: "[name].js",
        path: path.resolve("./wwwroot/js"),
    },
    module: {
        rules: [
            {
                test: /\.s[ac]ss$/i,
                use: [
                    "style-loader",
                    "css-loader",
                    "sass-loader",
                ],
            },
            {
                test: /\.m?js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ["@babel/preset-env"]
                    }
                }
            },
            {
                test: /\.(png|svg|jpg|jpeg|gif)$/i,
                type: "asset/resource",
            }
        ]
    },
    resolve: {
        alias: {
            "~": path.resolve("./"),
        },
    },
    plugins: [
        new CopyPlugin({
            patterns: [
                {
                    from: path.resolve("./assets/images"), to: path.resolve("./wwwroot/images"),
                }
            ],
        })
    ]
};

module.exports = (env, argv) => {
    if (argv.mode === "development") {
        // Development specific configuration.
        config.devtool = "eval-source-map";
    }

    if (argv.mode === "production") {
        // Production specific configuration.
        config.devtool = "nosources-source-map";
    }

    return config;
};