"use client"

import * as React from "react"
import { Moon, Sun } from "lucide-react"
import { useTheme } from "next-themes"

import { Button } from "./button"

export function ModeToggle() {
  const [mounted, setMounted] = React.useState(false)
  const { theme, setTheme } = useTheme()

  // useEffect only runs on the client, so now we can safely show the UI
  React.useEffect(() => {
    setMounted(true)
  }, [])

  if (!mounted) {
    return null
  }

  const toggleTheme = () => {
    setTheme(theme === "dark" ? "light" : "dark")
  }

  return (
    <Button 
      variant="ghost" 
      size="icon"
      onClick={toggleTheme}
    >
      <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
      <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
      <span className="sr-only">Toggle theme</span>
    </Button>
  )
}