import React, { useState } from 'react';
import MainToolbar from '../MainToolbar';
import { Grid, TableContainer, Table, TableRow, TableCell, TableHead, TableBody, Paper, makeStyles, FormControl, InputLabel, Select, MenuItem, Button, TextField } from '@material-ui/core';
import t from '../common/localization';
import { useSelector } from 'react-redux';
import moment from 'moment';
import { formatPosition } from '../common/formatter';

const useStyles = makeStyles(theme => ({
  root: {
    height: '100%',
    display: 'flex',
    flexDirection: 'column',
  },
  content: {
    flex: 1,
    overflow: 'auto',
    padding: theme.spacing(2),
  },
  form: {
    padding: theme.spacing(1, 2, 2),
  },
}));

const RouteReportPage = () => {
  const classes = useStyles();
  const devices = useSelector(state => Object.values(state.devices.items));
  const [deviceId, setDeviceId] = useState();
  const [period, setPeriod] = useState('today');
  const [from, setFrom] = useState(moment().subtract(1, 'hour'));
  const [to, setTo] = useState(moment());
  const [data, setData] = useState([]);

  const handleShow = () => {
    let selectedFrom;
    let selectedTo;
    switch (period) {
      case 'today':
        selectedFrom = moment().startOf('day');
        selectedTo = moment().endOf('day');
        break;
      case 'yesterday':
        selectedFrom = moment().subtract(1, 'day').startOf('day');
        selectedTo = moment().subtract(1, 'day').endOf('day');
        break;
      case 'thisWeek':
        selectedFrom = moment().startOf('week');
        selectedTo = moment().endOf('week');
        break;
      case 'previousWeek':
        selectedFrom = moment().subtract(1, 'week').startOf('week');
        selectedTo = moment().subtract(1, 'week').endOf('week');
        break;
      case 'thisMonth':
        selectedFrom = moment().startOf('month');
        selectedTo = moment().endOf('month');
        break;
      case 'previousMonth':
        selectedFrom = moment().subtract(1, 'month').startOf('month');
        selectedTo = moment().subtract(1, 'month').endOf('month');
        break;
      default:
        selectedFrom = from;
        selectedTo = to;
        break;
    }
    const query = new URLSearchParams({
      deviceId,
      from: selectedFrom.toISOString(),
      to: selectedTo.toISOString(),
    });
    fetch(`/api/reports/route?${query.toString()}`, { headers: { 'Accept': 'application/json' } })
      .then(response => {
        if (response.ok) {
          response.json().then(setData);
        }
      });
  }

  return (
    <div className={classes.root}>
      <MainToolbar />
      <div className={classes.content}>
        <Grid container spacing={2}>
          <Grid item xs={12} md={3} lg={2}>
            <Paper className={classes.form}>
              <FormControl variant='filled' margin='normal' fullWidth>
                <InputLabel>{t('reportDevice')}</InputLabel>
                <Select value={deviceId} onChange={e => setDeviceId(e.target.value)}>
                  {devices.map((device) => (
                    <MenuItem value={device.id}>{device.name}</MenuItem>
                  ))}
                </Select>
              </FormControl>
              <FormControl variant='filled' margin='normal' fullWidth>
                <InputLabel>{t('reportPeriod')}</InputLabel>
                <Select value={period} onChange={e => setPeriod(e.target.value)}>
                  <MenuItem value='today'>{t('reportToday')}</MenuItem>
                  <MenuItem value='yesterday'>{t('reportYesterday')}</MenuItem>
                  <MenuItem value='thisWeek'>{t('reportThisWeek')}</MenuItem>
                  <MenuItem value='previousWeek'>{t('reportPreviousWeek')}</MenuItem>
                  <MenuItem value='thisMonth'>{t('reportThisMonth')}</MenuItem>
                  <MenuItem value='previousMonth'>{t('reportPreviousMonth')}</MenuItem>
                  <MenuItem value='custom'>{t('reportCustom')}</MenuItem>
                </Select>
              </FormControl>
              {period === 'custom' &&
                <TextField
                  margin='normal'
                  variant='filled'
                  label={t('reportFrom')}
                  type='datetime-local'
                  value={from.format(moment.HTML5_FMT.DATETIME_LOCAL)}
                  onChange={e => setFrom(moment(e.target.value, moment.HTML5_FMT.DATETIME_LOCAL))}
                  fullWidth />
              }
              {period === 'custom' &&
                <TextField
                  margin='normal'
                  variant='filled'
                  label={t('reportTo')}
                  type='datetime-local'
                  value={to.format(moment.HTML5_FMT.DATETIME_LOCAL)}
                  onChange={(e) => setTo(moment(e.target.value, moment.HTML5_FMT.DATETIME_LOCAL))}
                  fullWidth />
              }
              <FormControl margin='normal' fullWidth>
                <Button type='button' color='primary' variant='contained' disabled={!deviceId} onClick={handleShow}>
                  {t('reportShow')}
                </Button>
              </FormControl>
            </Paper>
          </Grid>
          <Grid item xs={12} md={9} lg={10}>
            <TableContainer component={Paper}>
              <Table>
                <TableHead>
                  <TableRow>
                    <TableCell>{t('positionFixTime')}</TableCell>
                    <TableCell>{t('positionLatitude')}</TableCell>
                    <TableCell>{t('positionLongitude')}</TableCell>
                    <TableCell>{t('positionSpeed')}</TableCell>
                    <TableCell>{t('positionAddress')}</TableCell>
                  </TableRow>
                </TableHead>
                <TableBody>
                  {data.map((item) => (
                    <TableRow key={item.id}>
                      <TableCell>{formatPosition(item, 'fixTime')}</TableCell>
                      <TableCell>{formatPosition(item, 'latitude')}</TableCell>
                      <TableCell>{formatPosition(item, 'longitude')}</TableCell>
                      <TableCell>{formatPosition(item, 'speed')}</TableCell>
                      <TableCell>{formatPosition(item, 'address')}</TableCell>
                    </TableRow>
                  ))}
                </TableBody>
              </Table>
            </TableContainer>
          </Grid>
        </Grid>
      </div>
    </div>
  );
}

export default RouteReportPage;