"use client";

import { useEffect, useRef, useState } from "react";

interface LazyMountProps {
  children: React.ReactNode;
  rootMargin?: string;
  fallback?: React.ReactNode;
}

export function LazyMount({
  children,
  rootMargin = "200px",
  fallback = <div className="h-8" />,
}: LazyMountProps) {
  const [isVisible, setIsVisible] = useState(false);
  const containerRef = useRef<HTMLDivElement>(null);

  useEffect(() => {
    if (isVisible) return;

    const observer = new IntersectionObserver(
      (entries) => {
        if (entries[0]?.isIntersecting) {
          setIsVisible(true);
          observer.disconnect();
        }
      },
      { rootMargin }
    );

    if (containerRef.current) {
      observer.observe(containerRef.current);
    }

    return () => observer.disconnect();
  }, [isVisible, rootMargin]);

  return <div ref={containerRef}>{isVisible ? children : fallback}</div>;
}