const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const AngularCompilerPlugin = require('@ngtools/webpack').AngularCompilerPlugin;

const extractCss = new ExtractTextPlugin({
    filename: '[name].css',
    disable: false,
    allChunks: true,
});

const common = {
    module: {
        rules: [
            {
                test: /\.ts$/,
                enforce: 'pre',
                loader: 'tslint-loader',
            },
            {
                test: /(?:\.ngfactory\.js|\.ngstyle\.js|\.ts)$/,
                loader: '@ngtools/webpack',
            },
            {
                test: /\.(jpe?g|png|gif|svg)$/i,
                exclude: /.*(fontawesome-webfont)\.svg/,
                use: [{
                    loader: 'file-loader',
                    options: {
                        name: '[name].[ext]',
                        outputPath: 'images/',
                    },
                }],
            },
        ],
    },
    plugins: [],
    resolve: {
        extensions: ['.tsx', '.ts', '.js'],
        alias: {
            jslib: path.join(__dirname, 'jslib/src'),
        },
        symlinks: false,
        modules: [path.resolve('node_modules')],
    },
    output: {
        filename: '[name].js',
        path: path.resolve(__dirname, 'build'),
    },
};

const renderer = {
    mode: 'production',
    target: 'electron-renderer',
    node: {
        __dirname: false,
    },
    entry: {
        'app/main': './src/app/main.ts',
    },
    optimization: {
        splitChunks: {
            cacheGroups: {
                commons: {
                    test: /[\\/]node_modules[\\/]/,
                    name: 'app/vendor',
                    chunks: (chunk) => {
                        return chunk.name === 'app/main';
                    },
                },
            },
        },
    },
    module: {
        rules: [
            {
                test: /\.(html)$/,
                loader: 'html-loader',
            },
            {
                test: /.(ttf|otf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/,
                exclude: /loading.svg/,
                use: [{
                    loader: 'file-loader',
                    options: {
                        name: '[name].[ext]',
                        outputPath: 'fonts/',
                    },
                }],
            },
            {
                test: /\.scss$/,
                use: extractCss.extract({
                    use: [
                        {
                            loader: 'css-loader',
                        },
                        {
                            loader: 'sass-loader',
                        },
                    ],
                    publicPath: '../',
                }),
            },
            // Hide System.import warnings. ref: https://github.com/angular/angular/issues/21560
            {
                test: /[\/\\]@angular[\/\\].+\.js$/,
                parser: { system: true },
            },
        ],
    },
    plugins: [
        new AngularCompilerPlugin({
            tsConfigPath: 'tsconfig.json',
            entryModule: 'src/app/app.module#AppModule',
            sourceMap: true,
        }),
        // ref: https://github.com/angular/angular/issues/20357
        new webpack.ContextReplacementPlugin(/\@angular(\\|\/)core(\\|\/)fesm5/,
            path.resolve(__dirname, './src')),
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html',
            chunks: ['app/vendor', 'app/main'],
        }),
        new webpack.SourceMapDevToolPlugin({
            filename: '[name].js.map',
            include: ['app/main.js'],
        }),
        extractCss,
    ],
};

module.exports = merge(common, renderer);