"use client";

import { motion } from "framer-motion";
import { useTranslations } from "next-intl";
import type { Product } from "@/types/saleor";
import { getProductPrice, formatPrice } from "@/lib/saleor";

interface BundleSelectorProps {
  baseProduct: Product;
  bundleProducts: Product[];
  selectedVariantId: string | null;
  onSelectVariant: (variantId: string, quantity: number, price: number) => void;
  locale: string;
}

interface BundleOption {
  product: Product;
  quantity: number;
  price: number;
  pricePerUnit: number;
  savings: number;
  isBase: boolean;
}

export default function BundleSelector({
  baseProduct,
  bundleProducts,
  selectedVariantId,
  onSelectVariant,
  locale,
}: BundleSelectorProps) {
  const t = useTranslations("Bundle");

  if (bundleProducts.length === 0) {
    return null;
  }

  const baseVariant = baseProduct.variants?.[0];
  const basePrice = baseVariant?.pricing?.price?.gross?.amount || 0;

  const options: BundleOption[] = [];

  options.push({
    product: baseProduct,
    quantity: 1,
    price: basePrice,
    pricePerUnit: basePrice,
    savings: 0,
    isBase: true,
  });

  bundleProducts.forEach((bundle) => {
    const variant = bundle.variants?.[0];
    if (!variant?.pricing?.price?.gross?.amount) return;

    const price = variant.pricing.price.gross.amount;
    const quantityMatch = bundle.name.match(/(\d+)x/i);
    const quantity = quantityMatch ? parseInt(quantityMatch[1], 10) : 1;
    const pricePerUnit = price / quantity;
    const savings = (basePrice * quantity) - price;

    options.push({
      product: bundle,
      quantity,
      price,
      pricePerUnit,
      savings,
      isBase: false,
    });
  });

  options.sort((a, b) => a.quantity - b.quantity);

  const formatPriceWithLocale = (amount: number, currency: string = "RSD") => {
    const localeMap: Record<string, string> = {
      sr: "sr-RS",
      en: "en-US",
      de: "de-DE",
      fr: "fr-FR",
    };
    const numLocale = localeMap[locale] || "sr-RS";
    return new Intl.NumberFormat(numLocale, {
      style: "currency",
      currency,
      minimumFractionDigits: 0,
      maximumFractionDigits: 0,
    }).format(amount);
  };

  return (
    <div className="mb-8">
      <div className="flex items-center justify-between mb-4">
        <span className="text-sm uppercase tracking-[0.1em] font-medium">
          {t("selectBundle")}
        </span>
      </div>

      <div className="space-y-3">
        {options.map((option) => {
          const variantId = option.isBase 
            ? baseVariant?.id 
            : option.product.variants?.[0]?.id;
          const isSelected = selectedVariantId === variantId;

          return (
            <motion.button
              key={option.product.id}
              onClick={() => variantId && onSelectVariant(variantId, option.quantity, option.price)}
              className={`w-full p-4 border-2 transition-all text-left ${
                isSelected
                  ? "border-black bg-black text-white"
                  : "border-[#e5e5e5] hover:border-[#999999]"
              }`}
              whileHover={{ scale: 1.01 }}
              whileTap={{ scale: 0.99 }}
            >
              <div className="flex items-center justify-between">
                <div className="flex items-center gap-3">
                  <div
                    className={`w-5 h-5 rounded-full border-2 flex items-center justify-center ${
                      isSelected
                        ? "border-white bg-white"
                        : "border-[#999999]"
                    }`}
                  >
                    {isSelected && (
                      <motion.div
                        initial={{ scale: 0 }}
                        animate={{ scale: 1 }}
                        className="w-2.5 h-2.5 rounded-full bg-black"
                      />
                    )}
                  </div>
                  <div>
                    <span className="font-medium">
                      {option.isBase ? t("singleUnit") : t("xSet", { count: option.quantity })}
                    </span>
                    {!option.isBase && option.savings > 0 && (
                      <span className="ml-2 text-xs text-green-500">
                        {t("save", { amount: formatPriceWithLocale(option.savings) })}
                      </span>
                    )}
                  </div>
                </div>

                <div className="text-right">
                  <div className={`font-bold ${isSelected ? "text-white" : "text-black"}`}>
                    {formatPriceWithLocale(option.price)}
                  </div>
                  {!option.isBase && (
                    <div className={`text-xs ${isSelected ? "text-white/70" : "text-[#666666]"}`}>
                      {formatPriceWithLocale(option.pricePerUnit)} {t("perUnit")}
                    </div>
                  )}
                </div>
              </div>
            </motion.button>
          );
        })}
      </div>
    </div>
  );
}