/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule Header
 */
'use strict';

var React = require('React');

var PropTypes = require('prop-types');

var slugify = require('slugify');

class Header extends React.Component {
  render() {
    var slug = slugify(this.props.toSlug || this.props.children);
    var H = 'h' + this.props.level;
    var base = this.context.permalink || '';
    return (
      <H {...this.props}>
        <a className="anchor" name={slug} />
        {this.props.children}
        {' '}<a className="hash-link" href={base + '#' + slug}>#</a>
      </H>
    );
  }
}

Header.contextTypes = {
  permalink: PropTypes.string
};

module.exports = Header;