import 'webpack-dev-server';
import { execSync, spawn } from 'child_process';
import fs from 'fs';
import path from 'path';

import ReactRefreshWebpackPlugin from '@pmmmwh/react-refresh-webpack-plugin';
import chalk from 'chalk';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import webpack from 'webpack';
import { merge } from 'webpack-merge';

import checkNodeEnv from '../scripts/check-node-env';
import baseConfig from './webpack.config.base';
import webpackPaths from './webpack.paths';

// When an ESLint server is running, we can't set the NODE_ENV so we'll check if it's
// at the dev webpack config is not accidentally run in a production environment
if (process.env.NODE_ENV === 'production') {
    checkNodeEnv('development');
}

const port = process.env.PORT || 4343;
const manifest = path.resolve(webpackPaths.dllPath, 'renderer.json');
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
const requiredByDLLConfig = module.parent!.filename.includes('webpack.config.renderer.dev.dll');

/**
 * Warn if the DLL is not built
 */
if (!requiredByDLLConfig && !(fs.existsSync(webpackPaths.dllPath) && fs.existsSync(manifest))) {
    console.log(
        chalk.black.bgYellow.bold(
            'The DLL files are missing. Sit back while we build them for you with "npm run build-dll"',
        ),
    );
    execSync('npm run postinstall');
}

const configuration: webpack.Configuration = {
    devtool: 'inline-source-map',

    mode: 'development',

    target: ['web', 'electron-renderer'],

    entry: [
        `webpack-dev-server/client?http://localhost:${port}/dist`,
        'webpack/hot/only-dev-server',
        path.join(webpackPaths.srcRendererPath, 'index.tsx'),
    ],

    output: {
        path: webpackPaths.distRendererPath,
        publicPath: '/',
        filename: 'renderer.dev.js',
        library: {
            type: 'umd',
        },
    },

    module: {
        rules: [
            {
                test: /\.s?css$/,
                use: [
                    'style-loader',
                    {
                        loader: 'css-loader',
                        options: {
                            modules: {
                                localIdentName: '[name]__[local]--[hash:base64:5]',
                                exportLocalsConvention: 'camelCaseOnly',
                            },
                            sourceMap: true,
                            importLoaders: 1,
                        },
                    },
                    'sass-loader',
                ],
                include: /\.module\.s?(c|a)ss$/,
            },
            {
                test: /\.s?css$/,
                use: ['style-loader', 'css-loader', 'sass-loader'],
                exclude: /\.module\.s?(c|a)ss$/,
            },
            // Fonts
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/i,
                type: 'asset/resource',
            },
            // Images
            {
                test: /\.(png|svg|jpg|jpeg|gif)$/i,
                type: 'asset/resource',
            },
        ],
    },
    plugins: [
        ...(requiredByDLLConfig
            ? []
            : [
                  new webpack.DllReferencePlugin({
                      context: webpackPaths.dllPath,
                      manifest: require(manifest),
                      sourceType: 'var',
                  }),
              ]),

        new webpack.NoEmitOnErrorsPlugin(),

        /**
         * 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
         *
         * By default, use 'development' as NODE_ENV. This can be overriden with
         * 'staging', for example, by changing the ENV variables in the npm scripts
         */
        new webpack.EnvironmentPlugin({
            NODE_ENV: 'development',
        }),

        new webpack.LoaderOptionsPlugin({
            debug: true,
        }),

        new ReactRefreshWebpackPlugin(),

        new HtmlWebpackPlugin({
            filename: path.join('index.html'),
            template: path.join(webpackPaths.srcRendererPath, 'index.ejs'),
            minify: {
                collapseWhitespace: true,
                removeAttributeQuotes: true,
                removeComments: true,
            },
            isBrowser: false,
            env: process.env.NODE_ENV,
            isDevelopment: process.env.NODE_ENV !== 'production',
            nodeModules: webpackPaths.appNodeModulesPath,
            templateParameters: {
                web: false,
            },
        }),
    ],

    node: {
        __dirname: false,
        __filename: false,
    },

    devServer: {
        port,
        compress: true,
        hot: true,
        headers: { 'Access-Control-Allow-Origin': '*' },
        static: {
            publicPath: '/',
        },
        historyApiFallback: {
            verbose: true,
        },
        setupMiddlewares(middlewares) {
            console.log('Starting preload.js builder...');
            const preloadProcess = spawn('npm', ['run', 'start:preload'], {
                shell: true,
                stdio: 'inherit',
            })
                .on('close', (code: number) => process.exit(code!))
                .on('error', (spawnError) => console.error(spawnError));

            console.log('Starting remote.js builder...');
            const remoteProcess = spawn('npm', ['run', 'start:remote'], {
                shell: true,
                stdio: 'inherit',
            })
                .on('close', (code: number) => process.exit(code!))
                .on('error', (spawnError) => console.error(spawnError));

            console.log('Starting Main Process...');
            spawn('npm', ['run', 'start:main'], {
                shell: true,
                stdio: 'inherit',
            })
                .on('close', (code: number) => {
                    preloadProcess.kill();
                    remoteProcess.kill();
                    process.exit(code!);
                })
                .on('error', (spawnError) => console.error(spawnError));
            return middlewares;
        },
    },
};

export default merge(baseConfig, configuration);