Function checkProposeRateLimit

server/src/routes/content.ts:53–74

(userId: string)

const proposeHistory = new Map<string, number[]>();

function checkProposeRateLimit(userId: string): { ok: true } | { ok: false; retryAfterMs: number } {
  if (userId.startsWith('system:')) return { ok: true };
  const now = Date.now();
  const cutoff = now - PROPOSE_WINDOW_MS;
  const history = (proposeHistory.get(userId) ?? []).filter(t => t > cutoff);
  if (history.length >= PROPOSE_MAX_PER_WINDOW) {
    return { ok: false, retryAfterMs: history[0] + PROPOSE_WINDOW_MS - now };
  }
  history.push(now);
  proposeHistory.set(userId, history);
  // Opportunistic GC — if we've accumulated entries for many users,
  // prune ones with no recent activity. Cheap: runs once per call when
  // the map is large.
  if (proposeHistory.size > 1000) {
    for (const [key, entries] of proposeHistory) {
      const recent = entries.filter(t => t > cutoff);
      if (recent.length === 0) proposeHistory.delete(key);
      else proposeHistory.set(key, recent);
    }
  }
  return { ok: true };
}

interface ContentAuthor {
  user_id: string;