/* ldgallery - A static generator which turns a collection of tagged
--             pictures into a searchable web gallery.
--
-- Copyright (C) 2019-2022  Guillaume FOUET
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU Affero General Public License for more details.
--
-- You should have received a copy of the GNU Affero General Public License
-- along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

import { useUiStore } from '@/store/uiStore';
import { useEventListener } from '@vueuse/core';
import { watch } from 'vue';

export const useLdFullscreen = () => {
  const uiStore = useUiStore();

  useEventListener(document, 'fullscreenchange', onFullscreenChange);

  function onFullscreenChange() {
    uiStore.toggleFullscreen(isFullscreenActive());
  }

  function isFullscreenActive(): boolean {
    return Boolean(document.fullscreenElement);
  }

  watch(() => uiStore.fullscreen, (fullscreen) => {
    if (fullscreen && !isFullscreenActive()) document.body.requestFullscreen();
    else if (isFullscreenActive()) document.exitFullscreen();
  });
};