frigate/web/src/AppBar.jsx

import { h, Fragment } from 'preact';
import BaseAppBar from './components/AppBar';
import LinkedLogo from './components/LinkedLogo';
import Menu, { MenuItem, MenuSeparator } from './components/Menu';
import AutoAwesomeIcon from './icons/AutoAwesome';
import LightModeIcon from './icons/LightMode';
import DarkModeIcon from './icons/DarkMode';
import { useDarkMode } from './context';
import { useCallback, useRef, useState } from 'preact/hooks';

export default function AppBar() {
  const [showMoreMenu, setShowMoreMenu] = useState(false);
  const { setDarkMode } = useDarkMode();

  const handleSelectDarkMode = useCallback(
    (value, label) => {
      setDarkMode(value);
      setShowMoreMenu(false);
    },
    [setDarkMode, setShowMoreMenu]
  );

  const moreRef = useRef(null);

  const handleShowMenu = useCallback(() => {
    setShowMoreMenu(true);
  }, [setShowMoreMenu]);

  const handleDismissMoreMenu = useCallback(() => {
    setShowMoreMenu(false);
  }, [setShowMoreMenu]);

  return (
    <Fragment>
      <BaseAppBar title={LinkedLogo} overflowRef={moreRef} onOverflowClick={handleShowMenu} />
      {showMoreMenu ? (
        <Menu onDismiss={handleDismissMoreMenu} relativeTo={moreRef}>
          <MenuItem icon={AutoAwesomeIcon} label="Auto dark mode" value="media" onSelect={handleSelectDarkMode} />
          <MenuSeparator />
          <MenuItem icon={LightModeIcon} label="Light" value="light" onSelect={handleSelectDarkMode} />
          <MenuItem icon={DarkModeIcon} label="Dark" value="dark" onSelect={handleSelectDarkMode} />
        </Menu>
      ) : null}
    </Fragment>
  );
}