"use client"

import { useState } from 'react'
import Image from 'next/image'
import Link from './LocalizedLink'
import { ShoppingBag } from 'lucide-react'
import type { Product } from '@homaroma/types'
import { getCategoryImage, formatPrice } from '@homaroma/types'
import { resolveCategoryName, resolveLocalized } from '../lib/localization'
import { useLang } from '../hooks/useLang'
import { useCartStore } from '../store/cartStore'
import WishlistButton from './WishlistButton'

interface ProductCardProps {
  product: Product
}

export default function ProductCard({ product }: ProductCardProps) {
  const lang = useLang()
  const { addToCart } = useCartStore()
  const [selectedVariant, setSelectedVariant] = useState(product.variants?.[0] || null)
  
  const categoryName = resolveCategoryName(product.category, lang)
  const productName = resolveLocalized(product.name, lang) || product.brand.name
  const imageUrl = product.images?.[0]?.url || product.category.imageUrl || getCategoryImage(categoryName)
  const displayPrice = selectedVariant?.price ?? product.variants[0]?.price ?? product.price

  const addToCartLabels: Record<string, string> = {
    th: 'เพิ่มลงตะกร้า',
    en: 'Add to Cart',
    ja: 'カートに追加',
    zh: '加入购物车',
    vi: 'Thêm vào giỏ',
    ko: '장바구니에 담기'
  }
  const addToCartText = addToCartLabels[lang] || addToCartLabels.en

  return (
    <div className="ui-card ui-card-hover group flex h-full cursor-pointer flex-col overflow-hidden p-2">
      <div className="relative aspect-[4/3] overflow-hidden rounded-xl bg-surface-page md:h-64 md:aspect-auto">
        <WishlistButton product={product} />
        <Link href={`/products/${product.id}`} className="block h-full w-full">
          <Image
            src={imageUrl}
            alt={productName}
            fill
            unoptimized
            className="h-full w-full object-cover transition duration-700 group-hover:scale-105"
          />
          {categoryName && (
            <span className="ui-chip absolute left-3 top-3 border-line-primary/20 bg-surface-card/90 px-2.5 py-1 text-[10px] text-text-main shadow-sm backdrop-blur-sm">
              {categoryName}
            </span>
          )}
        </Link>
      </div>

      <div className="flex flex-1 flex-col p-4">
        <div className="mb-2">
          <h3 className="line-clamp-1 text-base font-bold leading-tight text-text-main transition-colors group-hover:text-brand-primary md:text-lg">
            <Link href={`/products/${product.id}`}>
              {productName}
            </Link>
          </h3>
          {categoryName && (
            <p className="mt-1 line-clamp-1 text-[10px] font-semibold uppercase tracking-widest text-muted-text md:text-xs">
              {categoryName}
            </p>
          )}
        </div>

        {product.variants.length > 0 && (
          <div className="mb-1 mt-2 flex flex-wrap gap-1.5">
            {product.variants.map((variant) => {
              const isSelected = selectedVariant?.id === variant.id
              return (
                <button
                  key={variant.id}
                  type="button"
                  onClick={(e) => {
                    e.preventDefault()
                    e.stopPropagation()
                    setSelectedVariant(variant)
                  }}
                  className={`rounded-full border px-3 py-1 text-[10px] font-bold uppercase tracking-wider transition-all cursor-pointer ${
                    isSelected
                      ? 'border-brand-primary bg-brand-primary text-surface-card shadow-sm'
                      : 'border-line-primary/20 bg-surface-card text-text-main hover:border-brand-primary/50'
                  }`}
                >
                  {[variant.option1, variant.option2, variant.option3].filter(Boolean).join(' / ')}
                </button>
              )
            })}
          </div>
        )}

        <div className="mt-auto flex flex-col gap-2 pt-3">
          <div className="flex items-center justify-between">
            <span className="text-sm font-black text-brand-primary md:text-lg">
              {formatPrice(displayPrice)}
            </span>
          </div>

          {selectedVariant && (
            <button
              type="button"
              onClick={(e) => {
                e.preventDefault()
                e.stopPropagation()
                addToCart({
                  productId: product.id,
                  variantId: selectedVariant.id,
                  quantity: 1,
                  price: selectedVariant.price || 0,
                  productName: productName,
                  variantSize: [selectedVariant.option1, selectedVariant.option2, selectedVariant.option3].filter(Boolean).join(' / '),
                  productImage: imageUrl
                })
              }}
              className="ui-button-primary w-full gap-1.5 rounded-xl py-2.5 shadow-sm"
            >
              <ShoppingBag className="h-3.5 w-3.5" />
              {addToCartText}
            </button>
          )}
        </div>
      </div>
    </div>
  )
}