vps-monitor/frontend/src/components/theme-toggle.tsx

import { MonitorIcon, MoonIcon, SunIcon } from "lucide-react";

import { Button } from "@/components/ui/button";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import { useTheme } from "@/contexts/theme-context";

export function ThemeToggle() {
  const { theme, setTheme, resolvedTheme } = useTheme();

  return (
    <DropdownMenu>
      <DropdownMenuTrigger asChild>
        <Button variant="ghost" size="icon-sm">
          {resolvedTheme === "dark" ? (
            <MoonIcon className="size-4" />
          ) : (
            <SunIcon className="size-4" />
          )}
          <span className="sr-only">Toggle theme</span>
        </Button>
      </DropdownMenuTrigger>
      <DropdownMenuContent align="end">
        <DropdownMenuItem
          onClick={() => setTheme("light")}
          className={theme === "light" ? "bg-accent" : ""}
        >
          <SunIcon className="mr-2 size-4" />
          Light
        </DropdownMenuItem>
        <DropdownMenuItem
          onClick={() => setTheme("dark")}
          className={theme === "dark" ? "bg-accent" : ""}
        >
          <MoonIcon className="mr-2 size-4" />
          Dark
        </DropdownMenuItem>
        <DropdownMenuItem
          onClick={() => setTheme("system")}
          className={theme === "system" ? "bg-accent" : ""}
        >
          <MonitorIcon className="mr-2 size-4" />
          System
        </DropdownMenuItem>
      </DropdownMenuContent>
    </DropdownMenu>
  );
}