import React from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import withStyles from '../styles/withStyles';
import SvgIcon from '../SvgIcon';

export const styles = theme => ({
  root: {
    color: theme.palette.text.disabled,
  },
  active: {
    color: theme.palette.primary.main,
  },
  text: {
    fill: theme.palette.primary.contrastText,
    fontSize: theme.typography.caption.fontSize,
    fontFamily: theme.typography.fontFamily,
  },
});

/**
 * @ignore - internal component.
 */
function StepPositionIcon(props) {
  const { position, classes, className: classNameProp, active } = props;
  const className = classNames(
    classes.root,
    {
      [classes.active]: active,
    },
    classNameProp,
  );

  return (
    <SvgIcon className={className}>
      <circle cx="12" cy="12" r="12" />
      <text className={classes.text} x="12" y="16" textAnchor="middle">
        {position}
      </text>
    </SvgIcon>
  );
}

StepPositionIcon.propTypes = {
  /**
   * Whether this step is active.
   */
  active: PropTypes.bool,
  /**
   * Classses for component style customizations.
   */
  classes: PropTypes.object.isRequired,
  /**
   * @ignore
   */
  className: PropTypes.string,
  /**
   * The step position as a number.
   */
  position: PropTypes.node,
};

export default withStyles(styles, { name: 'MuiStepPosition' })(StepPositionIcon);