const webpack = require('webpack')
const merge = require('webpack-merge')
const base = require('./webpack.base.config')
const SWPrecachePlugin = require('sw-precache-webpack-plugin')
const VueSSRClientPlugin = require('vue-server-renderer/client-plugin')

const config = merge(base, {
	entry: {
		app: './src/entry-client.js'
	},
	resolve: {
		alias: {
			'create-api': './create-api-client.js'
		}
	},
	plugins: [
		// strip dev-only code in Vue source
		new webpack.DefinePlugin({
			'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'development'),
			'process.env.VUE_ENV': '"client"'
		}),
		// extract vendor chunks for better caching
		new webpack.optimize.CommonsChunkPlugin({
			name: 'vendor',
			minChunks: function (module) {
				// a module is extracted into the vendor chunk if...
				return (
					// it's inside node_modules
					/node_modules/.test(module.context) &&
					// and not a CSS file (due to extract-text-webpack-plugin limitation)
					!/\.css$/.test(module.request)
				)
			}
		}),
		// extract webpack runtime & manifest to avoid vendor chunk hash changing
		// on every build.
		new webpack.optimize.CommonsChunkPlugin({
			name: 'manifest'
		}),
		new VueSSRClientPlugin()
	]
})

if (process.env.NODE_ENV === 'production') {
	config.plugins.push(
		// auto generate service worker
		new SWPrecachePlugin({
			cacheId: 'vue-hn',
			filename: 'service-worker.js',
			minify: true,
			dontCacheBustUrlsMatching: /./,
			staticFileGlobsIgnorePatterns: [/\.map$/, /\.json$/],
			runtimeCaching: [{
					urlPattern: '/',
					handler: 'networkFirst'
				},
				{
					urlPattern: /\/(top|new|show|ask|jobs)/,
					handler: 'networkFirst'
				},
				{
					urlPattern: '/item/:id',
					handler: 'networkFirst'
				},
				{
					urlPattern: '/user/:id',
					handler: 'networkFirst'
				}
			]
		})
	)
}

module.exports = config