nezha-dash-v1/src/components/ThemeSwitcher.tsx

import { Theme } from "@/components/ThemeProvider"
import { Button } from "@/components/ui/button"
import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuTrigger } from "@/components/ui/dropdown-menu"
import { cn } from "@/lib/utils"
import { CheckCircleIcon } from "@heroicons/react/20/solid"
import { Moon, Sun } from "lucide-react"
import { useTranslation } from "react-i18next"

import { useTheme } from "../hooks/use-theme"

export function ModeToggle() {
  const { t } = useTranslation()
  const { setTheme, theme } = useTheme()

  const customBackgroundImage =
    // @ts-expect-error CustomBackgroundImage is a global variable
    (window.CustomBackgroundImage as string) !== "" ? window.CustomBackgroundImage : undefined

  const handleSelect = (e: Event, newTheme: Theme) => {
    e.preventDefault()
    setTheme(newTheme)
  }

  return (
    <DropdownMenu>
      <DropdownMenuTrigger asChild>
        <Button
          variant="outline"
          size="sm"
          className={cn("rounded-full px-[9px] bg-white dark:bg-black", {
            "bg-white/80 dark:bg-black/80": customBackgroundImage,
          })}
        >
          <Sun className="h-4 w-4 rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
          <Moon className="absolute h-4 w-4 rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
          <span className="sr-only">Toggle theme</span>
        </Button>
      </DropdownMenuTrigger>
      <DropdownMenuContent className="flex flex-col gap-0.5" align="end">
        <DropdownMenuItem className={cn({ "gap-3 bg-muted": theme === "light" })} onSelect={(e) => handleSelect(e, "light")}>
          {t("theme.light")}
          {theme === "light" && <CheckCircleIcon className="size-4" />}
        </DropdownMenuItem>
        <DropdownMenuItem className={cn({ "gap-3 bg-muted": theme === "dark" })} onSelect={(e) => handleSelect(e, "dark")}>
          {t("theme.dark")}
          {theme === "dark" && <CheckCircleIcon className="size-4" />}
        </DropdownMenuItem>
        <DropdownMenuItem className={cn({ "gap-3 bg-muted": theme === "system" })} onSelect={(e) => handleSelect(e, "system")}>
          {t("theme.system")}
          {theme === "system" && <CheckCircleIcon className="size-4" />}
        </DropdownMenuItem>
      </DropdownMenuContent>
    </DropdownMenu>
  )
}