Added elaborate template switching.

src/web/main.js

@@ -0,0 +1,70 @@
+import config from 'config';
+import { renderPage } from 'vike/server'; // eslint-disable-line import/extensions
+
+import { fetchUserStashes } from '../stashes.js';
+import { fetchUserTemplates } from '../users.js';
+import { fetchUnseenNotificationsCount } from '../alerts.js';
+
+export default async function mainHandler(req, res, next) {
+	const [stashes, templates, unseenNotifications] = req.user && await Promise.all([
+		fetchUserStashes(req.user.id, req.user),
+		fetchUserTemplates(req.user),
+		fetchUnseenNotificationsCount(req.user),
+	]);
+
+	const pageContextInit = {
+		urlOriginal: req.originalUrl,
+		urlQuery: req.query, // vike's own query does not apply boolean parser
+		headers: req.headers,
+		cookies: req.cookies,
+		tagFilter: req.tagFilter,
+		user: req.user && {
+			id: req.user.id,
+			username: req.user.username,
+			email: req.user.email,
+			avatar: req.user.avatar,
+		},
+		assets: req.user ? {
+			stashes,
+			primaryStash: stashes.find((stash) => stash.isPrimary),
+			templates,
+		} : null,
+		env: {
+			theme: req.cookies.theme || req.headers['sec-ch-prefers-color-scheme'] || 'light',
+			selectedTemplate: Number(req.cookies.selectedTemplate) || 0,
+			allowLogin: config.auth.login,
+			allowSignup: config.auth.signup,
+			maxMatches: config.database.manticore.maxMatches,
+			maxAggregateSize: config.database.manticore.maxAggregateSize,
+			media: config.media,
+			psa: config.psa,
+			links: config.links,
+		},
+		meta: {
+			unseenNotifications,
+		},
+	};
+
+	const pageContext = await renderPage(pageContextInit);
+	const { httpResponse } = pageContext;
+
+	if (pageContext.errorWhileRendering) {
+		console.error(pageContext.errorWhileRendering);
+	}
+
+	if (!httpResponse) {
+		next();
+		return;
+	}
+
+	/*
+	if (res.writeEarlyHints) {
+		res.writeEarlyHints({ link: httpResponse.earlyHints.map((e) => e.earlyHintLink) });
+	}
+	*/
+
+	httpResponse.headers.forEach(([name, value]) => res.setHeader(name, value));
+	res.status(httpResponse.statusCode);
+	// For HTTP streams use httpResponse.pipe() instead, see https://vike.dev/stream
+	res.send(httpResponse.body);
+}