Add cache buster middleware to clear browser cache on server restart

bae02a44ed6f387df1c60f9ed4bfc064401ccd62

Cohee <18619528+Cohee1207@users.noreply.github.com>

server.js+2 -1 Viewed

 import whitelistMiddleware from './src/middleware/whitelist.js';
 import multerMonkeyPatch from './src/middleware/multerMonkeyPatch.js';
 import initRequestProxy from './src/request-proxy.js';
+import getCacheBusterMiddleware from './src/middleware/cacheBuster.js';
 import {
     getVersion,
     getConfigValue,

 // Static files
 // Host index page
-app.get('/', (request, response) => {
+app.get('/', getCacheBusterMiddleware(), (request, response) => {
     if (shouldRedirectToLogin(request)) {
         const query = request.url.split('?')[1];
         const redirectUrl = query ? `/login?${query}` : '/login';

src/middleware/cacheBuster.js+22 -0 Viewed

+/**
+ * Middleware to bust the browser cache for the current user.
+ * @returns {import('express').RequestHandler}
+ */
+export default function getCacheBusterMiddleware() {
+    /**
+     * @type {Set<string>} Handles that have already been busted.
+     */
+    const handles = new Set();
+    return (request, response, next) => {
+        const handle = request.user?.profile?.handle;
+        if (!handle || handles.has(handle)) {
+            return next();
+        }
+        handles.add(handle);
+        response.setHeader('Clear-Site-Data', '"cache"');
+        next();
+    };
+}