"use client";

import { cn } from "@/lib/utils";
import React, { useCallback, useEffect, useState } from "react";

export const InfiniteMovingCards = ({
  items,
  direction = "left",
  speed = "fast",
  pauseOnHover = true,
  className,
}: {
  items: React.ReactNode[];
  direction?: "left" | "right";
  speed?: "fast" | "normal" | "slow";
  pauseOnHover?: boolean;
  className?: string;
}): JSX.Element => {
  const containerRef = React.useRef<HTMLDivElement>(null);
  const scrollerRef = React.useRef<HTMLUListElement>(null);
  const [start, setStart] = useState(false);

  const getDirection = useCallback(() => {
    if (containerRef.current) {
      if (direction === "left") {
        containerRef.current.style.setProperty("--animation-direction", "forwards");
      } else {
        containerRef.current.style.setProperty("--animation-direction", "reverse");
      }
    }
  }, [direction]);

  const getSpeed = useCallback(() => {
    if (containerRef.current) {
      if (speed === "fast") {
        containerRef.current.style.setProperty("--animation-duration", "20s");
      } else if (speed === "normal") {
        containerRef.current.style.setProperty("--animation-duration", "40s");
      } else {
        containerRef.current.style.setProperty("--animation-duration", "80s");
      }
    }
  }, [speed]);

  const addAnimation = useCallback(() => {
    if (containerRef.current && scrollerRef.current) {
      const scrollerContent = Array.from(scrollerRef.current.children);

      scrollerContent.forEach((item) => {
        const duplicatedItem = item.cloneNode(true);
        if (scrollerRef.current) {
          scrollerRef.current.appendChild(duplicatedItem);
        }
      });

      getDirection();
      getSpeed();
      setStart(true);
    }
  }, [getDirection, getSpeed]);

  useEffect(() => {
    addAnimation();
  }, [addAnimation]);

  return (
    <div
      ref={containerRef}
      className={cn("scroller relative z-20 overflow-hidden", className)}
    >
      <ul
        ref={scrollerRef}
        className={cn(
          "flex min-w-full shrink-0 gap-16 py-4 w-max flex-nowrap",
          start && "animate-scroll",
          pauseOnHover && "hover:[animation-play-state:paused]",
        )}
      >
        {items.map((item, idx) => (
          <li className="relative flex-shrink-0" key={idx}>
            {item}
          </li>
        ))}
      </ul>
    </div>
  );
};
