"use client";

import { useState } from "react";
import Image from "next/image";
import { motion } from "framer-motion";
import type { Product } from "@/types/saleor";
import { useSaleorCheckoutStore } from "@/stores/saleorCheckoutStore";
import { getProductPrice, getProductImage, getLocalizedProduct } from "@/lib/saleor";
import ProductCard from "@/components/product/ProductCard";

interface ProductDetailProps {
  product: Product;
  relatedProducts: Product[];
  locale?: string;
}

export default function ProductDetail({ product, relatedProducts, locale = "SR" }: ProductDetailProps) {
  const [selectedImage, setSelectedImage] = useState(0);
  const [quantity, setQuantity] = useState(1);
  const [isAdding, setIsAdding] = useState(false);
  const { addLine, openCart } = useSaleorCheckoutStore();

  const localized = getLocalizedProduct(product, locale);
  const variant = product.variants?.[0];
  const images = product.media?.length > 0 
    ? product.media 
    : [{ id: "0", url: "/placeholder-product.jpg", alt: localized.name, type: "IMAGE" }];

  const handleAddToCart = async () => {
    if (!variant?.id) return;
    
    setIsAdding(true);
    try {
      await addLine(variant.id, quantity);
      openCart();
    } finally {
      setIsAdding(false);
    }
  };

  const stripHtml = (html: string) => {
    if (!html) return "";
    return html.replace(/<[^>]*>/g, "");
  };

  const isAvailable = variant?.quantityAvailable > 0;
  const price = getProductPrice(product);

  return (
    <>
      <section className="py-12 md:py-20 px-4">
        <div className="max-w-7xl mx-auto">
          <div className="grid grid-cols-1 lg:grid-cols-2 gap-12">
            {/* Product Images */}
            <motion.div
              initial={{ opacity: 0, x: -20 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ duration: 0.6 }}
            >
              <div className="relative aspect-square bg-background-ice mb-4">
                {images[selectedImage] && (
                  <Image
                    src={images[selectedImage].url}
                    alt={images[selectedImage].alt || localized.name}
                    fill
                    className="object-cover"
                    priority
                  />
                )}
              </div>
              
              {images.length > 1 && (
                <div className="flex gap-2 overflow-x-auto">
                  {images.map((image, index) => (
                    <button
                      key={image.id}
                      onClick={() => setSelectedImage(index)}
                      className={`relative w-20 h-20 flex-shrink-0 ${
                        selectedImage === index ? "ring-2 ring-foreground" : ""
                      }`}
                    >
                      <Image
                        src={image.url}
                        alt={image.alt || localized.name}
                        fill
                        className="object-cover"
                      />
                    </button>
                  ))}
                </div>
              )}
            </motion.div>

            {/* Product Info */}
            <motion.div
              initial={{ opacity: 0, x: 20 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ duration: 0.6, delay: 0.2 }}
            >
              <h1 className="text-3xl md:text-4xl font-serif mb-4">
                {localized.name}
              </h1>
              
              <p className="text-2xl text-foreground-muted mb-6">
                {price || (locale === "EN" ? "Contact for price" : "Kontaktirajte za cenu")}
              </p>
              
              {/* Short Description */}
              <div className="prose prose-sm max-w-none mb-8 text-foreground-muted">
                <p>{stripHtml(localized.description).slice(0, 200)}...</p>
              </div>

              {/* Add to Cart */}
              {isAvailable ? (
                <div className="flex items-center gap-4 mb-8">
                  {/* Quantity Selector */}
                  <div className="flex items-center border border-border">
                    <button
                      onClick={() => setQuantity(Math.max(1, quantity - 1))}
                      className="px-4 py-3 hover:bg-gray-50"
                    >
                      -
                    </button>
                    <span className="px-4 py-3 min-w-[3rem] text-center">{quantity}</span>
                    <button
                      onClick={() => setQuantity(quantity + 1)}
                      className="px-4 py-3 hover:bg-gray-50"
                    >
                      +
                    </button>
                  </div>
                  
                  {/* Add to Cart Button */}
                  <button
                    onClick={handleAddToCart}
                    disabled={isAdding}
                    className="flex-1 py-3 bg-foreground text-white hover:bg-accent-dark transition-colors disabled:opacity-50"
                  >
                    {isAdding 
                      ? (locale === "EN" ? "Adding..." : "Dodavanje...")
                      : (locale === "EN" ? "Add to Cart" : "Dodaj u korpu")
                    }
                  </button>
                </div>
              ) : (
                <div className="py-3 bg-red-50 text-red-600 text-center mb-8">
                  {locale === "EN" ? "Out of Stock" : "Nema na stanju"}
                </div>
              )}

              {/* SKU */}
              {variant?.sku && (
                <p className="text-sm text-foreground-muted mb-4">
                  SKU: {variant.sku}
                </p>
              )}

              {/* Full Description */}
              {localized.description && (
                <div className="border-t border-border/30 pt-6">
                  <h3 className="font-serif text-lg mb-4">
                    {locale === "EN" ? "Description" : "Opis"}
                  </h3>
                  <div 
                    className="prose max-w-none text-foreground-muted"
                    dangerouslySetInnerHTML={{ __html: localized.description }}
                  />
                </div>
              )}
            </motion.div>
          </div>
        </div>
      </section>

      {/* Related Products */}
      {relatedProducts.length > 0 && (
        <section className="py-12 px-4 bg-background-ice">
          <div className="max-w-7xl mx-auto">
            <h2 className="text-2xl font-serif text-center mb-8">
              {locale === "EN" ? "You May Also Like" : "Možda će vam se svideti"}
            </h2>
            <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-8">
              {relatedProducts.map((relatedProduct, index) => (
                <ProductCard 
                  key={relatedProduct.id} 
                  product={relatedProduct} 
                  index={index}
                  locale={locale}
                />
              ))}
            </div>
          </div>
        </section>
      )}
    </>
  );
}