import type {
  GiftCategory,
  GiftProduct,
} from "@/data/schemas/payment";

export const TIP_GIFT_PLACEHOLDER_IMAGE = "/images/tip/medium.png";

const TIP_GIFT_PLACEHOLDER_BY_TIP_TYPE: Readonly<Record<string, string>> = {
  coffee_small: "/images/tip/small.jpg",
  coffee_medium: "/images/tip/medium.png",
  coffee_large: "/images/tip/large.png",
};

export function formatGiftPrice(
  amountCents: number,
  currency: string,
): string {
  const normalizedCurrency = currency.trim().toUpperCase();
  try {
    return new Intl.NumberFormat("en-US", {
      style: "currency",
      currency: normalizedCurrency,
    }).format(amountCents / 100);
  } catch {
    const amount = (amountCents / 100).toFixed(2);
    return normalizedCurrency ? `${normalizedCurrency} ${amount}` : amount;
  }
}

export function getGiftImageSources(
  product: GiftProduct | null,
  category: GiftCategory | null,
): readonly string[] {
  const placeholderImage = product
    ? (TIP_GIFT_PLACEHOLDER_BY_TIP_TYPE[product.tipType] ??
      TIP_GIFT_PLACEHOLDER_IMAGE)
    : TIP_GIFT_PLACEHOLDER_IMAGE;

  return [
    product?.imageUrl,
    category?.imageUrl,
    placeholderImage,
  ].filter(
    (source, index, sources): source is string =>
      Boolean(source) && sources.indexOf(source) === index,
  );
}