Evict cache per user agent

fd38ca503a277eb753475b1827ada6264dcb0a6d

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

src/middleware/cacheBuster.js+11 -5 Viewed

 +import crypto from 'node:crypto';
 +import { DEFAULT_USER } from '../constants.js';
++
 /**
  * Middleware to bust the browser cache for the current user.
  * @returns {import('express').RequestHandler}
  */
 export default function getCacheBusterMiddleware() {
     /**
      * @type {Set<string>} Handles/User-Agents that have already been busted.
      */
     const handleskeys = new Set();
     return (request, response, next) => {
         const handle = request.user?.profile?.handle || DEFAULT_USER.handle;
 +        const userAgent = request.headers['user-agent'] || '';
 +        const hash = crypto.createHash('sha256').update(userAgent).digest('hex');
 +        const key = `${handle}-${hash}`;
         if (!handle || handleskeys.has(handlekey)) {
             return next();
+        }
         handleskeys.add(handlekey);
         response.setHeader('Clear-Site-Data', '"cache"');
         next();
     };