"use client";

import Image from "next/image";
import Link from "next/link";
import { Phone } from "lucide-react";
import { useEffect, useMemo, useState } from "react";
import {
  productImage,
  productUrl,
  type Product,
} from "@/lib/meshkee";

function getPageSize() {
  if (typeof window === "undefined") return 5;
  if (window.innerWidth < 620) return 1;
  if (window.innerWidth < 900) return 2;
  return 5;
}

export function ProductCarousel({ products }: { products: Product[] }) {
  const [pageSize, setPageSize] = useState(5);
  const [page, setPage] = useState(0);

  useEffect(() => {
    const update = () => {
      setPageSize(getPageSize());
      setPage(0);
    };
    update();
    window.addEventListener("resize", update);
    return () => window.removeEventListener("resize", update);
  }, []);

  const pages = Math.max(1, products.length - pageSize + 1);
  const visibleProducts = useMemo(() => {
    const start = page;
    return products.slice(start, start + pageSize);
  }, [page, pageSize]);

  return (
    <div className="product-carousel">
      <div
        key={`${page}-${pageSize}`}
        className="source-products-grid"
        style={{ "--visible-products": pageSize } as React.CSSProperties}
        aria-live="polite"
      >
        {visibleProducts.map((product) => (
          <article className="source-product-card" key={product.id}>
            <div className="source-product-image">
              <Link href={productUrl(product)} aria-label={product.nameFa || product.title}>
                <Image
                  src={productImage(product) || "/images/hero.jpg"}
                  alt={product.nameFa || product.title}
                  fill
                  sizes="(max-width: 620px) 100vw, (max-width: 900px) 50vw, (max-width: 1200px) 33vw, 20vw"
                />
              </Link>
            </div>
            <div className="source-product-copy">
              <div>
                <h3>
                  <Link href={productUrl(product)}>{product.nameFa || product.title}</Link>
                </h3>
                <a href="tel:+989301293902">تماس بگیرید</a>
              </div>
              <a
                className="product-phone"
                href="tel:+989301293902"
                aria-label={`تماس برای ${product.title}`}
              >
                <Phone />
              </a>
            </div>
          </article>
        ))}
      </div>

      {pages > 1 && (
        <div className="carousel-dots" aria-label="صفحات محصولات">
          {Array.from({ length: pages }, (_, index) => (
            <button
              key={index}
              type="button"
              className={index === page ? "active" : ""}
              onClick={() => setPage(index)}
              aria-label={`صفحه ${index + 1}`}
              aria-current={index === page ? "true" : undefined}
            />
          ))}
        </div>
      )}
    </div>
  );
}