/**
 * Webpack config for production electron main process
 */

import path from "path";
import webpack from "webpack";
import { merge } from "webpack-merge";
import TerserPlugin from "terser-webpack-plugin";
import { BundleAnalyzerPlugin } from "webpack-bundle-analyzer";
import baseConfig from "./webpack.config.base";
import webpackPaths from "./webpack.paths";
import checkNodeEnv from "../scripts/check-node-env";
import deleteSourceMaps from "../scripts/delete-source-maps";

checkNodeEnv("production");
deleteSourceMaps();

const devtoolsConfig =
    process.env.DEBUG_PROD === "true"
        ? {
              devtool: "source-map",
          }
        : {};

const configuration: webpack.Configuration = {
    ...devtoolsConfig,

    mode: "production",

    target: "electron-main",

    entry: {
        main: path.join(webpackPaths.srcMainPath, "main.ts"),
        preload: path.join(webpackPaths.srcMainPath, "preload.ts"),
    },

    output: {
        path: webpackPaths.distMainPath,
        filename: "[name].js",
    },

    optimization: {
        minimize: true,
        minimizer: [
            new TerserPlugin({
                parallel: true,
            }),
        ],
    },

    plugins: [
        new BundleAnalyzerPlugin({
            analyzerMode: process.env.ANALYZE === "true" ? "server" : "disabled",
        }),

        /**
         * Create global constants which can be configured at compile time.
         *
         * Useful for allowing different behaviour between development builds and
         * release builds
         *
         * NODE_ENV should be production so that modules do not perform certain
         * development checks
         */
        new webpack.EnvironmentPlugin({
            NODE_ENV: "production",
            DEBUG_PROD: false,
            START_MINIMIZED: false,
        }),
    ],

    /**
     * Disables webpack processing of __dirname and __filename.
     * If you run the bundle in node.js it falls back to these values of node.js.
     * https://github.com/webpack/webpack/issues/2010
     */
    node: {
        __dirname: false,
        __filename: false,
    },
};

export default merge(baseConfig, configuration);