/**
 * Copyright (c) 2019-present Tomek Wójcik <tomek@bthlabs.pl>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

import ClassName from 'classnames';
import PropTypes from 'prop-types';
import React from 'react';
import ReactDOM from 'react-dom';

export class Popup extends React.Component {
  constructor (props) {
    super(props);

    this.state = {
      layout: [0, 0]
    };
  }
  componentDidUpdate (prevProps, prevState) {
    if (prevProps.visible !== this.props.visible && this.props.visible) {
      this.layout();
    }
  }
  layout () {
    let layout = [0, 0];
    const body = document.body;
    if (this.props.visible && this.props.anchor && this.props.anchor.current) {
      const box = this.props.anchor.current.getBoundingClientRect();
      const document_ = document.documentElement;

      const scrollTop = (
        window.pageYOffset || document_.scrollTop || body.scrollTop
      );
      const scrollLeft = (
        window.pageXOffset || document_.scrollLeft || body.scrollLeft
      );

      const clientTop = document_.clientTop || body.clientTop || 0;
      const clientLeft = document_.clientLeft || body.clientLeft || 0;

      layout[0] = box.left + scrollLeft - clientLeft;
      layout[1] = box.top +  scrollTop - clientTop;
    }

    if (this.props.visible) {
      if (typeof this.props.onLayout === 'function') {
        layout = this.props.onLayout(layout);
      }

      this.setState({layout: layout});
    }
  }
  render () {
    const className = ClassName('bthlabs-react-custom-popup', this.props.className, {
      'bthlabs-rcp-visible': this.props.visible
    });

    const innerStyle = {};
    if (this.props.visible) {
      innerStyle.left = `${this.state.layout[0]}px`;
      innerStyle.top = `${this.state.layout[1]}px`;

      if (this.state.layout[2]) {
        innerStyle.width = `${this.state.layout[2]}px`;
      }

      if (this.state.layout[3]) {
        innerStyle.height = `${this.state.layout[3]}px`;
      }
    }

    return ReactDOM.createPortal(
      <div className={className}>
        {!this.props.hideOverlay &&
          <div className="bthlabs-rcp-overlay" onClick={this.props.onOverlayClick} />
        }
        <div className="bthlabs-rcp-inner" style={innerStyle}>
          {this.props.children}
        </div>
      </div>,
      this.props.domNode || document.body
    );
  }
}

Popup.propTypes = {
  anchor: PropTypes.object,
  className: PropTypes.string,
  hideOverlay: PropTypes.bool,
  visible: PropTypes.bool.isRequired,
  onLayout: PropTypes.func,
  onOverlayClick: PropTypes.func
};