"use client";

import { MoonIcon, SunIcon, SunMoonIcon } from "lucide-react";
import { useTheme } from "next-themes";
import { useSyncExternalStore } from "react";

import { Button } from "@/components/ui/button";

const subscribe = () => () => {};
const clientSnapshot = () => true;
const serverSnapshot = () => false;

export function ThemeSwitcher() {
  const { resolvedTheme, setTheme } = useTheme();
  const mounted = useSyncExternalStore(subscribe, clientSnapshot, serverSnapshot);
  const isDark = resolvedTheme === "dark";
  const label = mounted ? (isDark ? "เปลี่ยนเป็นโหมดสว่าง" : "เปลี่ยนเป็นโหมดมืด") : "เปลี่ยนธีม";

  return (
    <Button
      variant="ghost"
      size="icon"
      aria-label={label}
      title={label}
      disabled={!mounted}
      onClick={() => setTheme(isDark ? "light" : "dark")}
    >
      {!mounted ? <SunMoonIcon /> : isDark ? <SunIcon /> : <MoonIcon />}
    </Button>
  );
}