"use strict";

import React from "react";
import PropTypes from "prop-types";
import Styles from "../HelpScreens/obscure-overlay.scss";
import classNames from "classnames";
import defined from "terriajs-cesium/Source/Core/defined";

/**
 * Re-adapted from ObscureOverlay.jsx to be more general and not tied to viewState
 *
 * TourPortal.jsx should be the 'wrapper'/smart component
 *
 * This provides five panels. Four are rectangle elements that go above, left, right, and below the highlighted element
 * to grey out the rest of the screen. A fifth panel, which is clear, covers the whole screen to prevent the highlighted
 * element from being selectable.
 */
const TourOverlay = ({ rectangle, onCancel }) => {
  const advance = () => {
    // this.props.helpViewState.advance = true;
  };
  // const helpScreen = this.props.helpViewState.currentScreen;
  if (!defined(rectangle)) {
    console.log("no rectangle passed in, won't render overlay");
    return null;
  }

  // Top
  const topOverlayPositionLeft = 0 + "px";
  const topOverlayPositionTop = 0 + "px";
  const topOverlayHeight = rectangle.top + "px";
  const topOverlayWidth = "100%";

  // Left
  const leftOverlayPositionLeft = 0 + "px";
  const leftOverlayPositionTop = rectangle.top + "px";
  const leftOverlayHeight = rectangle.height + "px";
  const leftOverlayWidth = rectangle.left + "px";

  // Right
  const rightOverlayPositionLeft = rectangle.right + "px";
  const rightOverlayPositionTop = rectangle.top + "px";
  const rightOverlayHeight = rectangle.height + "px";
  const rightOverlayWidth = "100%";

  // Bottom
  const bottomOverlayPositionLeft = 0 + "px";
  const bottomOverlayPositionTop = rectangle.bottom + "px";
  const bottomOverlayHeight = "100%";
  const bottomOverlayWidth = "100%";

  const windowClass = classNames(Styles.window, {
    [Styles.isActive]: rectangle
  });
  return (
    <div className={windowClass}>
      <div
        className={Styles.topOverlay}
        style={{
          left: topOverlayPositionLeft,
          top: topOverlayPositionTop,
          width: topOverlayWidth,
          height: topOverlayHeight
        }}
        onClick={onCancel}
      />
      <div
        className={Styles.leftOverlay}
        style={{
          left: leftOverlayPositionLeft,
          top: leftOverlayPositionTop,
          width: leftOverlayWidth,
          height: leftOverlayHeight
        }}
        onClick={onCancel}
      />
      <div
        className={Styles.rightOverlay}
        style={{
          left: rightOverlayPositionLeft,
          top: rightOverlayPositionTop,
          width: rightOverlayWidth,
          height: rightOverlayHeight
        }}
        onClick={onCancel}
      />
      <div
        className={Styles.bottomOverlay}
        style={{
          left: bottomOverlayPositionLeft,
          top: bottomOverlayPositionTop,
          width: bottomOverlayWidth,
          height: bottomOverlayHeight
        }}
        onClick={onCancel}
      />
      <div className={Styles.clearOverlay} onClick={advance} />
    </div>
  );
};
TourOverlay.propTypes = {
  rectangle: PropTypes.object.isRequired,
  onCancel: PropTypes.func.isRequired
};

module.exports = TourOverlay;