svemagie
c64b7877a2
- accounts/lookup: add bannerUrl to ap_following path (was missing, follower path was correct) - account-cache: store headerUrl alongside counts and avatarUrl - resolve-account: pass headerUrl to cacheAccountStats - enrich-accounts: apply cached.headerUrl to account.header/header_static Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
73 lines
2.0 KiB
JavaScript
73 lines
2.0 KiB
JavaScript
/**
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* In-memory cache for remote account stats (followers, following, statuses).
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*
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* Populated by resolveRemoteAccount() when a profile is fetched.
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* Read by serializeAccount() to enrich embedded account objects in statuses.
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*
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* LRU-style with TTL — entries expire after 1 hour.
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*/
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import { remoteActorId } from "./id-mapping.js";
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const CACHE_TTL_MS = 60 * 60 * 1000; // 1 hour
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const MAX_ENTRIES = 500;
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// Map<actorUrl, { followersCount, followingCount, statusesCount, createdAt, avatarUrl, cachedAt }>
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const cache = new Map();
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// Reverse map: accountId (hash) → actorUrl
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// Populated alongside the stats cache for follow/unfollow lookups
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const idToUrl = new Map();
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/**
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* Store account stats in cache.
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* @param {string} actorUrl - The actor's URL (cache key)
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* @param {object} stats - { followersCount, followingCount, statusesCount, createdAt, avatarUrl, headerUrl }
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*/
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export function cacheAccountStats(actorUrl, stats) {
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if (!actorUrl) return;
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// Evict oldest if at capacity
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if (cache.size >= MAX_ENTRIES) {
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const oldest = cache.keys().next().value;
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cache.delete(oldest);
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}
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cache.set(actorUrl, { ...stats, cachedAt: Date.now() });
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// Maintain reverse lookup
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const hashId = remoteActorId(actorUrl);
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if (hashId) idToUrl.set(hashId, actorUrl);
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}
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/**
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* Get cached account stats.
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* @param {string} actorUrl - The actor's URL
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* @returns {object|null} Stats or null if not cached/expired
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*/
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export function getCachedAccountStats(actorUrl) {
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if (!actorUrl) return null;
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const entry = cache.get(actorUrl);
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if (!entry) return null;
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// Check TTL
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if (Date.now() - entry.cachedAt > CACHE_TTL_MS) {
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cache.delete(actorUrl);
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return null;
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}
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// Promote to end of Map (true LRU)
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cache.delete(actorUrl);
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cache.set(actorUrl, entry);
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return entry;
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}
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/**
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* Reverse lookup: get actor URL from account hash ID.
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* @param {string} hashId - The 24-char hex account ID
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* @returns {string|null} Actor URL or null
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*/
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export function getActorUrlFromId(hashId) {
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return idToUrl.get(hashId) || null;
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}
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