import React from 'react';
import { makeStyles } from '@material-ui/core/styles';
import {
  Card,
  CardActionArea,
  CardMedia,
  Avatar,
  CardHeader
} from '@material-ui/core/';
import { Poll } from '../types';

interface PropTypes {
  poll: Poll;
}

interface PercentageBarPropTypes {
  value: number;
  which: 'left' | 'right';
}

const useStyles = makeStyles(theme => ({
  root: {
    maxWidth: theme.spacing(75),
    height: theme.spacing(63),
    margin: '20px auto'
  },
  images: {
    height: theme.spacing(50),
    width: theme.spacing(38)
  },
  imagesBlock: {
    display: 'flex'
  },
  percentage: {
    position: 'absolute',
    color: 'white',
    top: '86%',
    fontSize: 20
  },
  percentageLeft: {
    left: 30
  },
  percentageRight: {
    right: 30
  }
}));


const PercentageBar: React.FC<PercentageBarPropTypes> = ({ value, which }) => {
  const classes = useStyles();
  const positionClassName = which === 'left' ? 'percentageLeft' : 'percentageRight';

  return (
    <div className={`${classes.percentage} ${classes[positionClassName]}`}>
      {value}
      %
    </div>
  );
};


const PollCard: React.FC<PropTypes> = ({ poll }) => {
  const classes = useStyles();
  const { author, contents } = poll;

  const leftPercentage = Math.round(100 * (contents.left.votes / (contents.left.votes + contents.right.votes)));
  const rightPercentage = 100 - leftPercentage;


  return (
    <Card className={classes.root}>
      <CardHeader
        avatar={(
          <Avatar aria-label="avatar">
            <img src={author.avatarUrl} alt={author.name[0].toUpperCase()} />
          </Avatar>
        )}
        title={author.name}
      />
      <div className={classes.imagesBlock}>
        <CardActionArea>
          <CardMedia
            className={classes.images}
            image={contents.left.url}
          />
          <PercentageBar value={leftPercentage} which="left" />
        </CardActionArea>
        <CardActionArea>
          <CardMedia
            className={classes.images}
            image={contents.right.url}
          />
          <PercentageBar value={rightPercentage} which="right" />
        </CardActionArea>
      </div>
    </Card>
  );
};

export default PollCard;