/** Hours after which a stored price is considered stale for live refresh. */
export const PRICE_STALE_HOURS = 24;

/**
 * Resolve the unit price for a owned card row (foil-aware).
 * MTG: current_price = nonfoil USD, market_price = foil USD (Scryfall mapping).
 *
 * @param {{ currentPrice?: number | null, marketPrice?: number | null, isFoil?: boolean }} params
 * @returns {number | null}
 */
export function resolveUnitPrice({ currentPrice, marketPrice, isFoil = false }) {
  const current = currentPrice != null ? Number(currentPrice) : null;
  const market = marketPrice != null ? Number(marketPrice) : null;

  if (isFoil) {
    return market ?? current ?? null;
  }
  return current ?? market ?? null;
}

/**
 * @param {Date | string | null | undefined} pricesUpdatedAt
 * @returns {boolean}
 */
export function isPriceStale(pricesUpdatedAt) {
  if (!pricesUpdatedAt) return true;
  const updated = pricesUpdatedAt instanceof Date ? pricesUpdatedAt : new Date(pricesUpdatedAt);
  if (Number.isNaN(updated.getTime())) return true;
  const ageMs = Date.now() - updated.getTime();
  return ageMs > PRICE_STALE_HOURS * 60 * 60 * 1000;
}