import React, { useEffect, useState } from 'react';
import { useParams } from 'react-router-dom';
import {
  Accordion, AccordionDetails, AccordionSummary, Container, makeStyles, Paper, Slider, Tooltip, Typography, IconButton, Box
} from '@material-ui/core';

import ExpandMoreIcon from '@material-ui/icons/ExpandMore';
import SkipNextIcon from '@material-ui/icons/SkipNext';
import SkipPreviousIcon from '@material-ui/icons/SkipPrevious';
import PlayArrowIcon from '@material-ui/icons/PlayArrow';
import PauseIcon from '@material-ui/icons/Pause';

import MainToolbar from '../MainToolbar';
import Map from '../map/Map';
import ReplayPathMap from '../map/ReplayPathMap';
import PositionsMap from '../map/PositionsMap';
import { formatPosition, formatSpeed, formatDistance } from '../common/formatter';
import ReportFilter from './ReportFilter';
import { useTranslation } from '../LocalizationProvider';
import { useAttributePreference } from '../common/preferences';
import { useInterval } from '../reactHelper';

const useStyles = makeStyles((theme) => ({
  root: {
    height: '100%',
    display: 'flex',
    flexDirection: 'column',
  },
  controlPanel: {
    position: 'absolute',
    bottom: theme.spacing(5),
    left: '50%',
    transform: 'translateX(-50%)',
  },
  controlContent: {
    padding: theme.spacing(2),
    marginBottom: theme.spacing(2),
  },
  configForm: {
    display: 'flex',
    flexDirection: 'column',
  },
}));

const TimeLabel = ({ children, open, value }) => (
  <Tooltip open={open} enterTouchDelay={0} placement="top" title={value}>
    {children}
  </Tooltip>
);

const ReplayPage = () => {
  const classes = useStyles();
  const { id } = useParams();
  const t = useTranslation();

  const speedUnit = useAttributePreference('speedUnit');

  const [playback, setPlayback] = useState(false);
  const [expanded, setExpanded] = useState(true);
  const [positions, setPositions] = useState([]);
  const [totalDistance, setTotalDistance] = useState(0.0);
  const [index, setIndex] = useState(0);

  const handleSubmit = async (deviceId, from, to, _, headers) => {
    const query = new URLSearchParams({ deviceId, from, to });
    const response = await fetch(`/api/positions?${query.toString()}`, { headers });
    if (response.ok) {
      setIndex(0);
      setPositions(await response.json());
      setExpanded(false);

      const response2 = await fetch(`/api/reports/summary?${query.toString()}`, { headers });
      if (response2.ok) {
        let data = await response2.json();
        if (data.length > 0) {
          setTotalDistance (data[0].distance);
        }
      }
    }
  };

  useInterval(() => {
    if (playback && index < positions.length - 1) {
      console.log(`Index: ${index}`);
      setIndex(index + 1);
    }
  }, 1000);

  return (
    <div className={classes.root}>
      <MainToolbar />
      <Map>
        <ReplayPathMap positions={positions} />
        {index < positions.length
          && <PositionsMap positions={[positions[index]]} />}
      </Map>
      <Container maxWidth="sm" className={classes.controlPanel}>
        {!!positions.length
          && (
            <Paper className={classes.controlContent}>
                <Box maxWidth="sm" display="flex">
                    {/* Previous position button */}
                    <IconButton color="primary" onClick={() => setPlayback(!playback)}>
                        { playback ? <PauseIcon /> : <PlayArrowIcon /> }
                    </IconButton>
                    
                    <Box flexGrow={1} textAlign="center">
                        {/* Date time */}
                        <Typography variant="button">{formatPosition(positions[index], 'fixTime', t)}</Typography>
                        {/* Speed */}
                        {positions[index].speed != undefined &&
                         <>
                             <br/>
                             <Box flexGrow={1}>
                                 <Typography variant="secondary">
                                     {formatSpeed(positions[index].speed, speedUnit, t)}
                                 </Typography>
                             </Box>
                             <Typography variant="secondary">
                                 <b>{t('deviceTotalDistance')}</b> {formatDistance(totalDistance, 'km', t)}
                             </Typography>
                         </>}
                    </Box>

                    {/* Previous position button */}
                    <IconButton color="primary" disabled={index === 0} onClick={() => setIndex(index - 1)}>
                        <SkipPreviousIcon />
                    </IconButton>
                    
                    {/* Next position button*/}
                    <IconButton color="primary" disabled={index === positions.length - 1} onClick={() => setIndex(index + 1)}>
                        <SkipNextIcon />
                    </IconButton>
                </Box>
                <Slider
                  max={positions.length - 1}
                  step={null}
                  marks={positions.map((_, index) => ({ value: index }))}
                  value={index}
                  onChange={(_, index) => setIndex(index)}
                  valueLabelDisplay="auto"
                  valueLabelFormat={(i) => (i < positions.length ? formatPosition(positions[i], 'fixTime', t) : '')}
                  ValueLabelComponent={TimeLabel}
                />
            </Paper>
          )}
        <div>
          <Accordion expanded={expanded} onChange={() => setExpanded(!expanded)}>
            <AccordionSummary expandIcon={<ExpandMoreIcon />}>
              <Typography align="center">
                {t('reportConfigure')}
              </Typography>
            </AccordionSummary>
            <AccordionDetails className={classes.configForm}>
              <ReportFilter handleSubmit={handleSubmit} showOnly defaultSelected={id} />
            </AccordionDetails>
          </Accordion>
        </div>
      </Container>
    </div>
  );
};

export default ReplayPage;