const path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const CheckerPlugin = require('awesome-typescript-loader').CheckerPlugin;
const VueSSRPlugin = require('vue-ssr-webpack-plugin');
const merge = require('webpack-merge');
const bundleOutputDir = './wwwroot/dist';

module.exports = (env) => {
    const isDevBuild = !(env && env.prod);

    // Configuration in common to both client-side and server-side bundles
    const sharedConfig = {
        stats: { modules: false },
        context: __dirname,
        resolve: { extensions: [ '.js', '.ts' ] },
        output: {
            filename: '[name].js',
            publicPath: '/dist/'
        },
        module: {
            rules: [
                { test: /\.vue\.html$/, include: /ClientApp/, loader: 'vue-loader', options: { loaders: { js: 'awesome-typescript-loader?silent=true' } } },
                { test: /\.ts$/, include: /ClientApp/, use: 'awesome-typescript-loader?silent=true' },
                { test: /\.css$/, use: isDevBuild ? ['style-loader', 'css-loader'] : ExtractTextPlugin.extract({ use: 'css-loader' }) },
                { test: /\.(png|jpg|jpeg|gif|svg)$/, use: 'url-loader?limit=25000' }
            ]
        },
        plugins: [
            new CheckerPlugin(),
            new webpack.DefinePlugin({
                'process.env': {
                    NODE_ENV: JSON.stringify(isDevBuild ? 'development' : 'production')
                }
            })
        ]
    };

    // Configuration for client-side bundle suitable for running in browsers
    const clientBundleOutputDir = './wwwroot/dist';
    const clientBundleConfig = merge(sharedConfig, {
        entry: { 'main-client': './ClientApp/boot-client.ts' },
        output: { path: path.join(__dirname, clientBundleOutputDir) },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./wwwroot/dist/vendor-manifest.json')
            })
        ].concat(isDevBuild ? [
            // Plugins that apply in development builds only
            new webpack.SourceMapDevToolPlugin({
                filename: '[file].map', // Remove this line if you prefer inline source maps
                moduleFilenameTemplate: path.relative(clientBundleOutputDir, '[resourcePath]') // Point sourcemap entries to the original file locations on disk
            })
        ] : [
            // Plugins that apply in production builds only
            new webpack.optimize.UglifyJsPlugin()
        ])
    });

    // Configuration for server-side (prerendering) bundle suitable for running in Node
    const serverBundlesOutput = {
        libraryTarget: 'commonjs2',
        path: path.join(__dirname, './ClientApp/dist')
    };
    const serverBundleConfig = merge(sharedConfig, {
        resolve: { mainFields: ['main'] },
        entry: { 'main': './ClientApp/boot-server-bundle.ts' },
        externals: {},
        plugins: [new VueSSRPlugin()],
        output: serverBundlesOutput,
        target: 'node',
        devtool: 'inline-source-map'
    });

    const vueBundleRendererConfig = merge(sharedConfig, {
        entry: { 'main-server': './ClientApp/boot-server.ts' },
        output: serverBundlesOutput,
        target: 'node'
    });

    return [clientBundleConfig, serverBundleConfig, vueBundleRendererConfig];
};