Function acquireAccountByKey

src/auth.js:902–925

(apiKey, modelKey = null)

 * back to a fresh cascade on a different account instead of queuing.
 */
export function acquireAccountByKey(apiKey, modelKey = null) {
  const now = Date.now();
  const a = accounts.find(x => x.apiKey === apiKey);
  if (!a) return null;
  if (a.status !== 'active') return null;
  if (isAccountInMaintenance(a)) return null;
  if (isRateLimitedForModel(a, modelKey, now)) return null;
  const limit = rpmLimitFor(a);
  if (limit <= 0) return null;
  const used = pruneRpmHistory(a, now);
  if (used >= limit) return null;
  if (modelKey && !isModelAllowedForAccount(a, modelKey)) return null;
  const reservationTimestamp = nextReservationToken(now);
  a._rpmHistory.push(reservationTimestamp);
  a.lastUsed = now;
  a._inflight = (a._inflight || 0) + 1;
  a._inflightAt = now;
  return {
    id: a.id, email: a.email, apiKey: a.apiKey,
    apiServerUrl: a.apiServerUrl || '',
    proxy: getEffectiveProxy(a.id) || null,
    reservationTimestamp,
  };
}

/**
 * Explain why a pinned account cannot be used right now. Used by strict