/*
 * Copyright (C)  2021-2022 Kristóf Marussy <kristof@marussy.com>
 *
 * This file is part of Sophie.
 *
 * Sophie 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, version 3.
 *
 * 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/>.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

import Box from '@mui/material/Box';
import { observer } from 'mobx-react-lite';
import React, { useCallback, useEffect } from 'react';
import { useTranslation } from 'react-i18next';

import ServicePanel from './ServicePanel';
import { useStore } from './StoreProvider';
import Sidebar from './sidebar/Sidebar';

function App({ devMode }: { devMode: boolean }): JSX.Element {
  const { ready, t } = useTranslation(undefined, {
    useSuspense: false,
  });
  const {
    settings: { selectedService },
    shared: { services },
  } = useStore();
  const {
    settings: { name: serviceName },
    title: serviceTitle,
  } = selectedService ?? { settings: { name: undefined }, title: undefined };

  useEffect(() => {
    if (!ready) {
      // Only set title once the translations have been loaded.
      return;
    }
    let title: string;
    if (serviceName === undefined) {
      title = t('title.noServiceName');
    } else if (serviceTitle === undefined) {
      title = t('title.withServiceName', { serviceName });
    } else {
      title = t('title.withServiceNameAndTitle', { serviceName, serviceTitle });
    }
    document.title = devMode ? t('title.devMode', { title }) : title;
  }, [devMode, ready, serviceName, serviceTitle, t]);

  const handleBackForwardMouseButtons = useCallback(
    (event: React.MouseEvent<HTMLDivElement, MouseEvent>) => {
      switch (event.button) {
        case 3:
          selectedService?.goBack();
          break;
        case 4:
          selectedService?.goForward();
          break;
        default:
          // Allow the event to propagate.
          return;
      }
      event.preventDefault();
      event.stopPropagation();
    },
    [selectedService],
  );

  return (
    <Box
      onClick={handleBackForwardMouseButtons}
      onAuxClick={handleBackForwardMouseButtons}
      sx={{
        display: 'flex',
        overflow: 'hidden',
        flexDirection: 'row',
        alignItems: 'stretch',
        height: '100vh',
        width: '100vw',
      }}
    >
      <Sidebar />
      <Box
        sx={{
          flex: 1,
          height: '100%',
          position: 'relative',
        }}
      >
        {services.map((service) => (
          <ServicePanel key={service.id} service={service} />
        ))}
      </Box>
    </Box>
  );
}

export default observer(App);