function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

import React, { useRef } from 'react';
import { useDrag, useDrop } from 'react-dnd';
var ItemTypes = {
  CARD: 'card'
};

var Card = function Card(_ref) {
  var id = _ref.id,
      _end = _ref.end,
      move = _ref.move,
      children = _ref.children,
      index = _ref.index;
  var ref = useRef(null);

  var _useDrop = useDrop({
    accept: ItemTypes.CARD,
    hover: function hover(item, monitor) {
      if (!ref.current) {
        return;
      }

      var dragIndex = item.index;
      var hoverIndex = index; // Don't replace items with themselves

      if (dragIndex === hoverIndex) {
        return;
      } // Determine rectangle on screen


      var hoverBoundingRect = ref.current.getBoundingClientRect(); // Get vertical middle

      var hoverMiddleY = (hoverBoundingRect.bottom - hoverBoundingRect.top) / 2; // Determine mouse position

      var clientOffset = monitor.getClientOffset(); // Get pixels to the top

      var hoverClientY = clientOffset.y - hoverBoundingRect.top; // Only perform the move when the mouse has crossed half of the items height
      // When dragging downwards, only move when the cursor is below 50%
      // When dragging upwards, only move when the cursor is above 50%
      // Dragging downwards

      if (dragIndex < hoverIndex && hoverClientY < hoverMiddleY) {
        return;
      } // Dragging upwards


      if (dragIndex > hoverIndex && hoverClientY > hoverMiddleY) {
        return;
      } // Time to actually perform the action


      if (move) {
        move(dragIndex, hoverIndex);
      } // Note: we're mutating the monitor item here!
      // Generally it's better to avoid mutations,
      // but it's good here for the sake of performance
      // to avoid expensive index searches.
      // eslint-disable-next-line no-param-reassign


      item.index = hoverIndex;
    }
  }),
      _useDrop2 = _slicedToArray(_useDrop, 2),
      drop = _useDrop2[1];

  var _useDrag = useDrag({
    item: {
      type: ItemTypes.CARD,
      id: id,
      index: index
    },
    collect: function collect(monitor) {
      return {
        isDragging: monitor.isDragging()
      };
    },
    end: function end(item) {
      if (!item) {
        return;
      }

      _end(item.id, item.index);
    }
  }),
      _useDrag2 = _slicedToArray(_useDrag, 2),
      isDragging = _useDrag2[0].isDragging,
      drag = _useDrag2[1];

  var opacity = isDragging ? 0.4 : 1;
  drag(drop(ref));
  return /*#__PURE__*/React.createElement("div", {
    ref: ref,
    style: {
      opacity: opacity
    }
  }, children);
};

export default Card;