'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2013, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
define(['./Move', '../../../../lib/@waca/dashboard-common/dist/ui/interaction/Utils', 'jquery', '../../../../lib/@waca/core-client/js/core-client/utils/BrowserUtils'], function (BaseMoveClass, utils, $, BrowserUtils) {

	var MoveWidgets = BaseMoveClass.extend({
		init: function init() {
			MoveWidgets.inherited('init', this, arguments);
			this.isIE = BrowserUtils.isIE();
		},

		/**
   *  Called by the base class to get the type of the data being drag.
   *  Layout drop zone will only accept 'widget' types
   * @returns {String}
   */
		getDragDataType: function getDragDataType() {
			return 'widget';
		},

		/**
   * Called by the base class after a drop has occurred.
   * If we didn't drop in a drop zone, we restore the old position of the nodes
   * @param dropContext
   */
		handleDrop: function handleDrop(dropContext) {
			if (!dropContext.isDropped) {
				this.restoreOriginalPosition();
			}

			if (dropContext.dragObject) {
				$(dropContext.dragObject.data.nodeInfoList[0].node).parent().css('overflow', 'visible');
			}
		},

		/**
   * Restore the selected items to their original location
   *
   */
		restoreOriginalPosition: function restoreOriginalPosition() {
			var nList = this.dropInfo.nodeInfoList;
			var n;
			for (var i = 0, iLen = nList.length; i < iLen; i++) {
				var nodeInfo = nList[i];
				n = nodeInfo.node;
				if (!nodeInfo.oldValues.parent) {
					n.parentNode.removeChild(n);
				} else {
					nodeInfo.oldValues.parent.insertBefore(n, nodeInfo.oldValues.nextSibling);
					n.style.left = nodeInfo.oldValues.left;
					n.style.top = nodeInfo.oldValues.top;
					n.style.height = nodeInfo.oldValues.height;
					n.style.width = nodeInfo.oldValues.width;
				}
			}
		},

		/**
   *  Called by the base class once a drag starts
   *  to update the drop payload that the drop zone will receive.
   *
   * @param dropInfo
   */
		prepareDropInfo: function prepareDropInfo(dropInfo) {
			// Indicate to the drop zone that we are moving a widget
			dropInfo.operation = 'move';
		},

		/**
   * Called by the start of the dragging operation for every node that is being moved
   * @param {object} n - contains the dom node being dragged
   */
		prepareNodeForMove: function prepareNodeForMove(n) {
			var $n = $(n);
			// Set the height and width in case the CSS height/width is using percentage
			$n.height($n.height());
			$n.width($n.width());
			// Workaround for iOS 13 bug, RTC 299193
			if (!this._isIpadVersion13orGreater()) {
				$n.parent().css('overflow', 'hidden');
				this.getAvatarContainer().append(n);
			}
			return n;
		},

		postNodeForMove: function postNodeForMove(nodes) {
			if (this.isIE) {
				this.emit('moveWidgets:start', {
					'nodes': nodes
				});
			}
		},

		/**
   * Called by the base class on every move event
   *
   */
		handleMove: function handleMove(nodeInfo, coords, dragContext) {
			// Calculate the drop position within the drop zone.
			var nDropZone = dragContext.dropTargetNode;
			if (nDropZone) {
				var $n = $(nodeInfo.node);
				var offset = void 0;
				// Workaround for iOS 13 bug, RTC 299193
				if (this._isIpadVersion13orGreater()) {
					offset = { left: 0, top: 0 };
				} else {
					offset = dragContext.dropTargetNodeOffset || $(nDropZone).offset();
				}
				var x = Math.round(coords.x - offset.left + nDropZone.scrollLeft);
				var y = Math.round(coords.y - offset.top + nDropZone.scrollTop);

				var bounds = utils.widgetSize($n);
				nodeInfo.dropPosition = {
					x: x,
					y: y,
					height: bounds.height,
					width: bounds.width,
					center_x: x + $n.outerWidth() / 2,
					center_y: y + $n.outerHeight() / 2,
					before: nDropZone === nodeInfo.oldValues.parent ? nodeInfo.oldValues.nextSibling : null
				};
			}
		},

		dragMoveEvent: function dragMoveEvent() {
			MoveWidgets.inherited('dragMoveEvent', this, arguments);
		},

		/**
  * Event handler call after the drag and drop had completed
  */
		dragStopEvent: function dragStopEvent() {
			MoveWidgets.inherited('dragStopEvent', this, arguments);
			if (this.isIE) {
				this.emit('moveWidgets:end', {
					'nodes': this.getSelectedDomNodes()
				});
			}
		},

		/**
  * Determine if userAgent is an iPad and os version 13+
  * The format of an iOS userAgent is as follows:
  * 'Mozilla/5.0 (iPad; CPU OS 13_2_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1'
  */
		_isIpadVersion13orGreater: function _isIpadVersion13orGreater() {
			var regExMatch = window.navigator.userAgent.match(/ipad.*os\s((\d+_?){2,3})\s/i);
			var version = regExMatch ? regExMatch[1].split('_') : null;
			return version ? parseInt(version[0], 10) > 12 : false;
		}

	});
	return MoveWidgets;
});
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