/**
 * *** NOTE ON IMPORTING FROM ANGULAR AND NGUNIVERSAL IN THIS FILE ***
 *
 * If your application uses third-party dependencies, you'll need to
 * either use Webpack or the Angular CLI's `bundleDependencies` feature
 * in order to adequately package them for use on the server without a
 * node_modules directory.
 *
 * However, due to the nature of the CLI's `bundleDependencies`, importing
 * Angular in this file will create a different instance of Angular than
 * the version in the compiled application code. This leads to unavoidable
 * conflicts. Therefore, please do not explicitly import from @angular or
 * @nguniversal in this file. You can export any needed resources
 * from your application's main.server.ts file, as seen below with the
 * import for `ngExpressEngine`.
 */

import "zone.js/dist/zone-node";

import * as express from "express";
import { join } from "path";

// Express server
const app = express();

const PORT = process.env.PORT || 4000;
const DIST_FOLDER = join(process.cwd(), "dist/browser");

// * NOTE :: leave this as require() since this file is built Dynamically from webpack
const {
    AppServerModuleNgFactory,
    LAZY_MODULE_MAP,
    ngExpressEngine,
    provideModuleMap,
} = require("./dist/server/main");

// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
app.engine(
    "html",
    ngExpressEngine({
        bootstrap: AppServerModuleNgFactory,
        providers: [provideModuleMap(LAZY_MODULE_MAP)],
    }),
);

app.set("view engine", "html");
app.set("views", DIST_FOLDER);

// Example Express Rest API endpoints
// app.get('/api/**', (req, res) => { });
// Serve static files from /browser
app.get(
    "*.*",
    express.static(DIST_FOLDER, {
        maxAge: "1y",
    }),
);

// All regular routes use the Universal engine
app.get("*", (req, res) => {
    res.render("index", { req });
});

// Start up the Node server
app.listen(PORT, () => {
    console.log(`Node Express server listening on http://localhost:${PORT}`);
});