import React from 'react';
import { gsap } from 'gsap';

function FlowingMenu({ items = [], activeItem, onItemClick }) {
  return (
    <div className="flowing-menu-container">
      <nav className="flowing-menu-nav">
        {items.map((item, idx) => (
          <MenuItem
            key={item.id}
            link="#"
            text={item.label}
            image={`https://picsum.photos/600/400?random=${idx + 1}`}
            isActive={activeItem === item.id}
            onClick={() => onItemClick(item.id)}
            icon={item.icon}
          />
        ))}
      </nav>
    </div>
  );
}

function MenuItem({ link, text, image, isActive, onClick, icon }) {
  const itemRef = React.useRef(null);
  const marqueeRef = React.useRef(null);
  const marqueeInnerRef = React.useRef(null);

  const animationDefaults = { duration: 0.6, ease: 'expo' };

  const findClosestEdge = (mouseX, mouseY, width, height) => {
    const topEdgeDist = (mouseX - width / 2) ** 2 + mouseY ** 2;
    const bottomEdgeDist = (mouseX - width / 2) ** 2 + (mouseY - height) ** 2;
    return topEdgeDist < bottomEdgeDist ? 'top' : 'bottom';
  };

  const handleMouseEnter = (ev) => {
    if (!itemRef.current || !marqueeRef.current || !marqueeInnerRef.current) return;

    const rect = itemRef.current.getBoundingClientRect();
    const edge = findClosestEdge(
      ev.clientX - rect.left,
      ev.clientY - rect.top,
      rect.width,
      rect.height
    );

    gsap.timeline({ defaults: animationDefaults })
      .set(marqueeRef.current, { y: edge === 'top' ? '-101%' : '101%' })
      .set(marqueeInnerRef.current, { y: edge === 'top' ? '101%' : '-101%' })
      .to([marqueeRef.current, marqueeInnerRef.current], { y: '0%' });
  };

  const handleMouseLeave = (ev) => {
    if (!itemRef.current || !marqueeRef.current || !marqueeInnerRef.current) return;

    const rect = itemRef.current.getBoundingClientRect();
    const edge = findClosestEdge(
      ev.clientX - rect.left,
      ev.clientY - rect.top,
      rect.width,
      rect.height
    );

    gsap.timeline({ defaults: animationDefaults })
      .to(marqueeRef.current, { y: edge === 'top' ? '-101%' : '101%' })
      .to(marqueeInnerRef.current, { y: edge === 'top' ? '101%' : '-101%' });
  };

  const repeatedMarqueeContent = [];

  return (
    <div className={`flowing-menu-item ${isActive ? 'active' : ''}`} ref={itemRef}>
      <a
        className="menu-item-link"
        href={link}
        onClick={(e) => {
          e.preventDefault();
          onClick();
        }}
        onMouseEnter={handleMouseEnter}
        onMouseLeave={handleMouseLeave}
      >
        <span className="menu-icon">{icon}</span>
        <span className="menu-text">{text}</span>
      </a>
      <div className="marquee-overlay" ref={marqueeRef}>
        <div className="marquee-inner" ref={marqueeInnerRef}>
          <div className="marquee-content">
            {repeatedMarqueeContent}
          </div>
        </div>
      </div>
    </div>
  );
}

export default FlowingMenu;