upstream-plane/apps/space/components/issues/navbar/theme.tsx

/**
 * Copyright (c) 2023-present Plane Software, Inc. and contributors
 * SPDX-License-Identifier: AGPL-3.0-only
 * See the LICENSE file for details.
 */

import { useEffect, useState } from "react";
import { observer } from "mobx-react";
import { useTheme } from "next-themes";
import { AppearanceOutline, MoonOutline } from "@makeplane/propel/icons";

export const NavbarTheme = observer(function NavbarTheme() {
  // states
  const [appTheme, setAppTheme] = useState("light");
  // theme
  const { setTheme, theme } = useTheme();

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

  useEffect(() => {
    if (!theme) return;
    setAppTheme(theme);
  }, [theme]);

  return (
    <button
      type="button"
      onClick={handleTheme}
      className="relative grid size-7 place-items-center rounded-sm bg-layer-transparent text-primary hover:bg-layer-transparent-hover"
    >
      {appTheme === "light" ? (
        <MoonOutline className="size-3.5 shrink-0" />
      ) : (
        <AppearanceOutline className="size-3.5 shrink-0" />
      )}
    </button>
  );
});