'use client';

import { useStoreInfo } from '@/core/providers/store-provider';

/**
 * Single source of truth for "which currency code do I format prices with?"
 * in client components. Collapses the historical three-line fallback chain
 * (`storeInfo?.currency || process.env.NEXT_PUBLIC_STORE_CURRENCY || 'USD'`)
 * into one call so the chain lives in exactly one place — and so the day
 * we drop the env var or the USD last-resort, we only touch this file.
 *
 * @param override pass when the caller already has a specific currency
 *                 (e.g. an `Order` is denominated in its own currency,
 *                 not the live store currency). Wins over `storeInfo`.
 */
export function useCurrency(override?: string | null): string {
  const { storeInfo } = useStoreInfo();
  return override || storeInfo?.currency || process.env.NEXT_PUBLIC_STORE_CURRENCY || 'USD';
}