import React, { useState } from 'react';
import {
  Table, TableRow, TableCell, TableHead, TableBody,
} from '@mui/material';
import { formatTime } from '../common/util/formatter';
import { useTranslation } from '../common/components/LocalizationProvider';
import PageLayout from '../common/components/PageLayout';
import ReportsMenu from './components/ReportsMenu';
import ReportFilter from './components/ReportFilter';
import usePersistedState from '../common/util/usePersistedState';
import ColumnSelect from './components/ColumnSelect';
import { useCatch } from '../reactHelper';
import useReportStyles from './common/useReportStyles';
import TableShimmer from '../common/components/TableShimmer';

const columnsArray = [
  ['captureTime', 'statisticsCaptureTime'],
  ['activeUsers', 'statisticsActiveUsers'],
  ['activeDevices', 'statisticsActiveDevices'],
  ['requests', 'statisticsRequests'],
  ['messagesReceived', 'statisticsMessagesReceived'],
  ['messagesStored', 'statisticsMessagesStored'],
  ['mailSent', 'notificatorMail'],
  ['smsSent', 'notificatorSms'],
  ['geocoderRequests', 'statisticsGeocoder'],
  ['geolocationRequests', 'statisticsGeolocation'],
];
const columnsMap = new Map(columnsArray);

const StatisticsPage = () => {
  const classes = useReportStyles();
  const t = useTranslation();

  const [columns, setColumns] = usePersistedState('statisticsColumns', ['captureTime', 'activeUsers', 'activeDevices', 'messagesStored']);
  const [items, setItems] = useState([]);
  const [loading, setLoading] = useState(false);

  const handleSubmit = useCatch(async ({ from, to }) => {
    setLoading(true);
    try {
      const query = new URLSearchParams({ from, to });
      const response = await fetch(`/api/statistics?${query.toString()}`);
      if (response.ok) {
        setItems(await response.json());
      } else {
        throw Error(await response.text());
      }
    } finally {
      setLoading(false);
    }
  });

  return (
    <PageLayout menu={<ReportsMenu />} breadcrumbs={['reportTitle', 'statisticsTitle']}>
      <div className={classes.header}>
        <ReportFilter handleSubmit={handleSubmit} showOnly ignoreDevice>
          <ColumnSelect columns={columns} setColumns={setColumns} columnsArray={columnsArray} />
        </ReportFilter>
      </div>
      <Table>
        <TableHead>
          <TableRow>
            {columns.map((key) => (<TableCell key={key}>{t(columnsMap.get(key))}</TableCell>))}
          </TableRow>
        </TableHead>
        <TableBody>
          {!loading ? items.map((item) => (
            <TableRow key={item.id}>
              {columns.map((key) => (
                <TableCell key={key}>
                  {key === 'captureTime' ? formatTime(item[key], 'YYYY-MM-DD') : item[key]}
                </TableCell>
              ))}
            </TableRow>
          )) : (<TableShimmer columns={columns.length} />)}
        </TableBody>
      </Table>
    </PageLayout>
  );
};

export default StatisticsPage;