"use client";
import Image from "next/image";
import { useEffect, useRef, useState } from "react";
import Sidebar from "@/components/sidebar";
import { useIsMobile } from "@/hooks/use-mobile";

export default function Top() {
  const containerRef = useRef<HTMLDivElement>(null);
  const [randomBg, setRandomBg] = useState(1);
  const isMobile = useIsMobile();
  const [clickCount, setClickCount] = useState(0);
  const clickTimeoutRef = useRef<NodeJS.Timeout | null>(null);
  const [isMagicalGirlEnabled, setIsMagicalGirlEnabled] = useState(false);
  const REQUIRED_CLICKS = 6;

  useEffect(() => {
    setRandomBg(Math.floor(Math.random() * 14) + 1);
    setIsMagicalGirlEnabled(document.cookie.includes('MagicalGirl=true'));
  }, []);

  const requestPermission = async () => {
    const isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent);

    if (!isIOS)
      window.addEventListener("deviceorientation", handleDeviceOrientation);

    try {
      const permission = await (DeviceOrientationEvent as unknown as { requestPermission: () => Promise<string> }).requestPermission();
      if (permission === "granted") {
        window.addEventListener("devicemotion", handleDeviceMotion);
        window.addEventListener("deviceorientation", handleDeviceOrientation);
      }
    } catch {
      window.addEventListener("deviceorientation", handleDeviceOrientation);
    }
  };

  const handleDeviceOrientation = (event: DeviceOrientationEvent) => {
    if (!containerRef.current) return;
    const gamma = event.gamma || 0;
    const beta = event.beta || 0;

    const x = (gamma / 90) * -50;
    const y = (beta / 180) * -50;

    const bg = containerRef.current;
    bg.style.backgroundPosition = `${50 + x}% ${50 + y}%`;

    const img = bg.querySelector("img");
    if (img) img.style.transform = `translate(${x * 2}px, ${y * 2}px)`;
  };

  const handleDeviceMotion = (event: DeviceMotionEvent) => {
    if (!containerRef.current || !event.accelerationIncludingGravity) return;
    const { x, y } = event.accelerationIncludingGravity;
    if (x === null || y === null) return;
    const bg = containerRef.current;
    bg.style.backgroundPosition = `${50 - x * 3}% ${50 - y * 3}%`;
  };

  const handleBackgroundTouchClick = () => {
    if (!isMobile) return;

    setClickCount((prev) => {
      const newCount = prev + 1;

      // Clear existing timeout
      if (clickTimeoutRef.current) {
        clearTimeout(clickTimeoutRef.current);
      }

      // Check if required clicks reached
      if (newCount >= REQUIRED_CLICKS) {
        const newValue = !isMagicalGirlEnabled;
        setIsMagicalGirlEnabled(newValue);

        document.cookie = `MagicalGirl=${newValue}; path=/; max-age=${60 * 60 * 24 * 365}`;
        window.location.reload();
        return 0;
      }

      // Reset click count after 1 second if not enough clicks
      clickTimeoutRef.current = setTimeout(() => {
        setClickCount(0);
      }, 1000);

      return newCount;
    });
  };

  useEffect(() => {
    return () => {
      window.removeEventListener("deviceorientation", handleDeviceOrientation);
      window.removeEventListener("devicemotion", handleDeviceMotion);
    };
  }, []);

  return (
    <section
      id="top"
      className="snap-start h-screen w-full relative"
    // onWheel={(e) => {
    //   e.preventDefault();
    //   window.scrollBy(0, window.innerHeight * (e.deltaY > 0 ? 1 : -1));
    // }}
    >
      <Sidebar />
      <div
        ref={containerRef}
        className="absolute top-0 right-0 w-[calc(100%-100px)] h-screen lg:h-[calc(100vh-56px)] flex flex-col items-center justify-end lg:rounded-bl-[160px] bg-cover bg-center overflow-hidden"
        style={{
          backgroundImage: `url('/background/${randomBg}.avif')`,
        }}
        role="button"
        tabIndex={0}
        aria-label="Toggle MagicalGirl mode on mobile"
        onClick={handleBackgroundTouchClick}
        onMouseMove={(e) => {
          const { clientX, clientY } = e;
          const { innerWidth, innerHeight } = window;
          const x = (clientX / innerWidth - 0.5) * -50;
          const y = (clientY / innerHeight - 0.5) * -50;

          const bg = e.currentTarget;
          if (bg) {
            bg.style.backgroundPosition = `${50 + x}% ${50 + y}%`;
          }
          const img = e.currentTarget.querySelector("img");
          if (img) {
            img.style.transform = `translate(${x}px, ${y}px)`;
          }
        }}
      >
        <Image
          src={"/char.avif"}
          alt="character"
          width={4740}
          height={7584}
          className="w-[50vh] lg:w-[30vw] translate-y-[10%] transition-transform duration-100 ease-out"
          unoptimized
          onClick={requestPermission}
        />
      </div>
    </section>
  );
}