"use client";

import Link from "next/link";
import { useEffect, useState } from "react";
import { heroSlides as fallbackSlides, site } from "@/lib/site-data";

const SLIDE_INTERVAL = 5200;

export type HeroSlide = {
  eyebrow: string;
  title: string;
  description: string;
  image: string;
  linkUrl?: string | null;
};

export function HeroSlider({ slides }: { slides?: HeroSlide[] }) {
  const items: HeroSlide[] = slides?.length ? slides : fallbackSlides;
  const [activeIndex, setActiveIndex] = useState(0);
  const [isPaused, setIsPaused] = useState(false);
  const activeSlide = items[activeIndex] ?? items[0];

  useEffect(() => {
    setActiveIndex(0);
  }, [items.length]);

  useEffect(() => {
    if (isPaused || items.length <= 1) return;

    const timer = window.setInterval(() => {
      setActiveIndex((current) => (current + 1) % items.length);
    }, SLIDE_INTERVAL);

    return () => window.clearInterval(timer);
  }, [isPaused, items.length]);

  if (!activeSlide) return null;

  const media = (
    <div
      key={activeSlide.image}
      className="hero-image-layer"
      style={{ backgroundImage: `url(${activeSlide.image})` }}
    />
  );

  return (
    <section className="hero">
      <div className="container">
        <div
          className="hero-card"
          onMouseEnter={() => setIsPaused(true)}
          onMouseLeave={() => setIsPaused(false)}
        >
          {activeSlide.linkUrl ? (
            <a href={activeSlide.linkUrl} className="hero-image-link" aria-label={activeSlide.title}>
              {media}
            </a>
          ) : (
            media
          )}
          <div key={`${activeIndex}-${activeSlide.title}`} className="hero-content">
            <p className="eyebrow sequence-item sequence-eyebrow">{activeSlide.eyebrow}</p>
            <h1 className="sequence-item sequence-title">{activeSlide.title}</h1>
            <p className="sequence-item sequence-copy">{activeSlide.description}</p>
            <div className="hero-actions sequence-item sequence-actions">
              <Link className="primary-btn" href={activeSlide.linkUrl || "/store"}>
                مشاهده محصولات
              </Link>
              <Link className="hero-phone-link" href={`tel:${site.phone.replaceAll("-", "")}`}>
                <span className="hero-phone-icon" aria-hidden="true">
                  ☎
                </span>
                <span className="ltr-number" dir="ltr" lang="en">
                  {site.phone}
                </span>
              </Link>
            </div>
          </div>
          <div className="hero-dots" aria-label="انتخاب اسلاید">
            {items.map((slide, index) => (
              <button
                key={`${slide.image}-${index}`}
                className={index === activeIndex ? "active" : ""}
                type="button"
                aria-label={`اسلاید ${index + 1}`}
                onClick={() => setActiveIndex(index)}
              />
            ))}
          </div>
        </div>
      </div>
    </section>
  );
}