bioai-platform/frontend/src/components/SmoothScrollProvider.tsx

'use client';

import { useEffect, useRef } from 'react';
import Lenis from 'lenis';

export default function SmoothScrollProvider({ children }: { children: React.ReactNode }) {
  const lenisRef = useRef<Lenis | null>(null);

  useEffect(() => {
    const lenis = new Lenis({
      duration: 1.25,
      easing: (t: number) => Math.min(1, 1.001 - Math.pow(2, -10 * t)),
      orientation: 'vertical',
      smoothWheel: true,
      wheelMultiplier: 0.9,
      touchMultiplier: 1.5,
    });
    lenisRef.current = lenis;

    lenis.on('scroll', () => {
      window.dispatchEvent(new Event('scroll'));
    });

    let rafId: number;
    function raf(time: number) {
      lenis.raf(time);
      rafId = requestAnimationFrame(raf);
    }
    rafId = requestAnimationFrame(raf);

    return () => {
      cancelAnimationFrame(rafId);
      lenis.destroy();
    };
  }, []);

  return <>{children}</>;
}