"use client";

import React from 'react';
import { Heart, X, ShoppingCart } from 'lucide-react';
import Link from 'next/link';
import { useCartStore } from '@/store/cartStore';
import { getImageUrl, formatCurrency } from '@/lib/utils';

interface WishlistModalProps {
  onClose: () => void;
}

export const WishlistModal: React.FC<WishlistModalProps> = ({ onClose }) => {
  // Read directly from Zustand store — no localStorage mismatch
  const wishlist = useCartStore((state) => state.wishlist);
  const toggleWishlist = useCartStore((state) => state.toggleWishlist);
  const addToCart = useCartStore((state) => state.addToCart);

  React.useEffect(() => {
    document.body.style.overflow = 'hidden';
    const handleKeyDown = (e: KeyboardEvent) => {
      if (e.key === 'Escape') onClose();
    };
    document.addEventListener('keydown', handleKeyDown);
    return () => {
      document.body.style.overflow = '';
      document.removeEventListener('keydown', handleKeyDown);
    };
  }, [onClose]);

  const handleMoveToCart = (product: any) => {
    const variant = product.variants?.[0];
    if (variant) {
      addToCart(product, variant, 1);
      toggleWishlist(product); // remove from wishlist
    }
  };

  const getPrice = (product: any): number => {
    return product.variants?.[0]?.price ?? 0;
  };

  const getImage = (product: any): string => {
    const img = product.variants?.[0]?.images?.[0] ?? product.image ?? '';
    return getImageUrl(img);
  };

  return (
    <div
      onClick={onClose}
      className="fixed inset-0 bg-black/75 backdrop-blur-xs flex items-center justify-center z-[200] p-4 font-sans animate-in fade-in duration-200"
    >
      <div
        onClick={(e) => e.stopPropagation()}
        className="bg-white w-full max-w-[740px] rounded-2xl shadow-2xl overflow-hidden relative flex flex-col max-h-[85vh] text-left"
      >
        {/* Header */}
        <div className="bg-[#1E1E1E] text-white px-7 py-4 flex items-center justify-between">
          <h2 className="text-[16px] font-bold tracking-wide">
            Wishlist ({wishlist.length})
          </h2>
          <button
            onClick={onClose}
            className="w-9 h-9 rounded-full flex items-center justify-center text-gray-400 hover:text-white transition-colors cursor-pointer -mr-2"
            title="Close"
          >
            <X size={19} className="stroke-[2.5]" />
          </button>
        </div>

        {/* Wishlist Items */}
        {wishlist.length === 0 ? (
          <div className="flex flex-col items-center justify-center py-20 text-gray-500 flex-grow bg-[#F8F9FB]">
            <Heart size={40} className="text-gray-300 mb-3 stroke-[1.5]" />
            <p className="text-[13px] font-semibold">Your wishlist is empty!</p>
            <p className="text-[11px] text-gray-400 mt-1">Add items from the store to see them here.</p>
          </div>
        ) : (
          <div className="overflow-y-auto divide-y divide-gray-150 max-h-[495px] bg-white px-7 border-b border-gray-100">
            {wishlist.map((product) => {
              const price = getPrice(product);
              const imgSrc = getImage(product);
              const slug = product.slug ?? product.product_id;

              return (
                <div key={product.product_id} className="py-5 flex items-center gap-5 justify-between">
                  <div className="flex items-center gap-4 flex-grow min-w-0">
                    {/* Product Image */}
                    {imgSrc ? (
                      <img
                        src={imgSrc}
                        alt={product.name}
                        className="w-[72px] h-[72px] object-contain rounded-xl border border-gray-150 bg-white p-2 flex-shrink-0 shadow-xs"
                      />
                    ) : (
                      <div className="w-[72px] h-[72px] bg-gray-100 rounded-xl flex items-center justify-center text-gray-400 text-[10px] font-semibold flex-shrink-0">
                        No Image
                      </div>
                    )}

                    <div className="min-w-0 pr-2">
                      {/* Product Name */}
                      <Link
                        href={`/products/${slug}`}
                        onClick={onClose}
                        className="text-[15px] font-bold text-[#0073EC] hover:text-black line-clamp-1 block transition-colors leading-snug mb-1"
                      >
                        {product.name}
                      </Link>

                      {/* Price */}
                      <p className="text-[14.5px] font-extrabold text-gray-950 mb-1">
                        {formatCurrency(price)}
                      </p>

                      {/* SKU */}
                      <p className="text-xs text-gray-400 font-medium">
                        SKU: {product.variants?.[0]?.sku ?? '—'}
                      </p>
                    </div>
                  </div>

                  {/* Actions */}
                  <div className="flex items-center gap-3.5 flex-shrink-0">
                    <button
                      onClick={() => handleMoveToCart(product)}
                      className="bg-[#0073EC] hover:bg-black text-white text-[12.5px] font-bold px-5 py-3 rounded-xl transition-colors cursor-pointer select-none shadow-xs whitespace-nowrap flex items-center gap-2"
                    >
                      <ShoppingCart size={13} />
                      Move to Cart
                    </button>
                    <button
                      onClick={() => toggleWishlist(product)}
                      className="w-9 h-9 rounded-full flex items-center justify-center text-gray-400 hover:text-red-500 transition-colors cursor-pointer -mr-2"
                      title="Remove from Wishlist"
                    >
                      <X size={18} className="stroke-[2.5]" />
                    </button>
                  </div>
                </div>
              );
            })}
          </div>
        )}
      </div>
    </div>
  );
};