cc-switch/src/components/mode-toggle.tsx

import { Moon, Sun } from "lucide-react";
import { useTranslation } from "react-i18next";
import { Button } from "@/components/ui/button";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuLabel,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import { useTheme } from "@/components/theme-provider";

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

  const handleChange = (value: string) => {
    if (value === "light" || value === "dark" || value === "system") {
      setTheme(value);
    }
  };

  return (
    <DropdownMenu>
      <DropdownMenuTrigger asChild>
        <Button variant="outline" size="icon">
          <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">
            {t("common.toggleTheme", { defaultValue: "切换主题" })}
          </span>
        </Button>
      </DropdownMenuTrigger>
      <DropdownMenuContent align="end">
        <DropdownMenuLabel>
          {t("common.theme", { defaultValue: "主题" })}
        </DropdownMenuLabel>
        <DropdownMenuSeparator />
        <DropdownMenuRadioGroup value={theme} onValueChange={handleChange}>
          <DropdownMenuRadioItem value="light">
            {t("common.lightMode", { defaultValue: "浅色" })}
          </DropdownMenuRadioItem>
          <DropdownMenuRadioItem value="dark">
            {t("common.darkMode", { defaultValue: "深色" })}
          </DropdownMenuRadioItem>
          <DropdownMenuRadioItem value="system">
            {t("common.systemMode", { defaultValue: "跟随系统" })}
          </DropdownMenuRadioItem>
        </DropdownMenuRadioGroup>
      </DropdownMenuContent>
    </DropdownMenu>
  );
}