"use client";
import { useRef, useState, useEffect } from "react";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { faAngleRight, faCaretLeft, faCaretRight } from "@fortawesome/free-solid-svg-icons";
import "./ScrollSection.css";
import Link from "next/link";

const ScrollSection = ({ title, children, link=null }) => {
  const scrollRef = useRef(null);
  const [canScrollLeft, setCanScrollLeft] = useState(false);
  const [canScrollRight, setCanScrollRight] = useState(true);

  useEffect(() => {
    const currentScrollRef = scrollRef.current;
    const firstChild = currentScrollRef?.firstElementChild;
    const lastChild = currentScrollRef?.lastElementChild;

    if (!firstChild || !lastChild) return;

    const observerOptions = {
      root: currentScrollRef,
      threshold: 1.0
    };

    const callback = (entries) => {
      entries.forEach((entry) => {
        if (entry.target === firstChild) {
          setCanScrollLeft(!entry.isIntersecting);
        } else if (entry.target === lastChild) {
          setCanScrollRight(!entry.isIntersecting);
        }
      });
    };

    const observer = new IntersectionObserver(callback, observerOptions);

    observer.observe(firstChild);
    observer.observe(lastChild);

    return () => {
      observer.disconnect();
    };
  }, [children]);

  const scroll = (direction) => {
    if (scrollRef.current) {
      const scrollAmount = direction === "left" ? -360 : 360;
      scrollRef.current.scrollBy({ left: scrollAmount, behavior: "smooth" });
    }
  };

  return (
    <section className="scroll-section">
      <div className="scroll-section-controls">
      {link ? (
        <Link href={link}>
          <h2>
            {title} <FontAwesomeIcon icon={faAngleRight} size="lg" />
          </h2>
        </Link>
      ) : (
        <h2>{title}</h2>
      )}
        <div className="scroll-controls">
          <button
            onClick={() => scroll("left")}
            className="scroll-button"
            disabled={!canScrollLeft}
          >
            <FontAwesomeIcon icon={faCaretLeft} size="2xl" />
          </button>
          <button
            onClick={() => scroll("right")}
            className="scroll-button"
            disabled={!canScrollRight}
          >
            <FontAwesomeIcon icon={faCaretRight} size="2xl" />
          </button>
        </div>
      </div>
      <div className="items-grid" ref={scrollRef}>
        {children}
      </div>
    </section>
  );
};

export default ScrollSection;