"use client";

import { useEffect, useRef, type ReactNode } from "react";

interface ScrollRevealProps {
  children: ReactNode;
  className?: string;
  delay?: number;
  direction?: "up" | "down" | "left" | "right" | "none";
  duration?: number;
  once?: boolean;
}

export default function ScrollReveal({
  children,
  className = "",
  delay = 0,
  direction = "up",
  duration = 700,
  once = true,
}: ScrollRevealProps) {
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const el = ref.current;
    if (!el) return;

    const observer = new IntersectionObserver(
      ([entry]) => {
        if (entry.isIntersecting) {
          el.style.transitionDelay = `${delay}ms`;
          el.classList.add("scroll-revealed");
          if (once) observer.unobserve(el);
        } else if (!once) {
          el.classList.remove("scroll-revealed");
        }
      },
      { threshold: 0.15, rootMargin: "0px 0px -50px 0px" }
    );

    observer.observe(el);
    return () => observer.disconnect();
  }, [delay, once]);

  const directionClass = {
    up: "scroll-reveal-up",
    down: "scroll-reveal-down",
    left: "scroll-reveal-left",
    right: "scroll-reveal-right",
    none: "scroll-reveal-fade",
  }[direction];

  return (
    <div
      ref={ref}
      className={`${directionClass} ${className}`}
      style={{ transitionDuration: `${duration}ms` }}
    >
      {children}
    </div>
  );
}