'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: BI Cloud (C) Copyright IBM Corp. 2014, 2018
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 * Guideline Manager
 */
define(['jquery', 'underscore', '../../../../lib/@waca/core-client/js/core-client/ui/core/Class', './LayoutGuidelines', './GridGuidelines'], function ($, _, Class, LayoutGuidelines, GridGuidelines) {

	var Manager = Class.extend({
		LayoutGuidelines: {},

		init: function init(options) {
			this.layoutController = options.layoutController;
			this.layoutGuidelines = new LayoutGuidelines();
		},

		getReady: function getReady(page, dragObject, keyboard) {
			this.domNode = page;
			this.snapContributions = [];

			var layoutModel = this.layoutController.boardModel.layout.findModel(page.id);
			if (!layoutModel) {
				layoutModel = this.layoutController.boardModel.layout;
			}

			var snapObject = layoutModel.getValueFromSelfOrParent('snapObjects');
			snapObject = snapObject === undefined ? true : snapObject;
			this.gridGuidelines = new GridGuidelines({ 'page': page, 'controller': this.layoutController });
			if (!keyboard) {
				this.layoutGuidelines.setup(page, dragObject, snapObject);
				this.snapContributions.push(this.layoutGuidelines);
			}
			this.snapContributions.push(this.gridGuidelines);
		},

		finish: function finish() {
			$(this.domNode).children('.guideline').remove();
			this.domNode = null;
		},

		getSnapCoordinates: function getSnapCoordinates(dragBox) {
			var revisedDragBox = { 'top': null, 'right': null, 'bottom': null, 'left': null };
			var snapDistanceRight = [];
			var snapDistanceLeft = [];
			var snapDistanceTop = [];
			var snapDistanceBottom = [];

			if (this.snapContributions) {
				this.snapContributions.forEach(function (contribution) {

					snapDistanceRight.push(contribution.calculateSnapPoint(dragBox.right, 'x'));
					snapDistanceLeft.push(contribution.calculateSnapPoint(dragBox.left, 'x'));
					snapDistanceTop.push(contribution.calculateSnapPoint(dragBox.top, 'y'));
					snapDistanceBottom.push(contribution.calculateSnapPoint(dragBox.bottom, 'y'));
				}.bind(this));
			}

			revisedDragBox.right = this._calculateClosestSnapPoint(snapDistanceRight, 'x');
			revisedDragBox.left = this._calculateClosestSnapPoint(snapDistanceLeft, 'x');
			revisedDragBox.top = this._calculateClosestSnapPoint(snapDistanceTop, 'y');
			revisedDragBox.bottom = this._calculateClosestSnapPoint(snapDistanceBottom, 'y');

			return revisedDragBox;
		},

		_calculateClosestSnapPoint: function _calculateClosestSnapPoint(snapDistance) {
			var closestPoint = null;

			snapDistance.forEach(function (distance) {
				if (distance.distance && closestPoint) {
					if (closestPoint.distance > Math.abs(distance.distance)) {
						closestPoint = distance;
					}
				} else if (distance.distance && !closestPoint) {
					closestPoint = distance;
				}
			}.bind(this));

			if (closestPoint && closestPoint.distance) {
				if (closestPoint.show) {
					closestPoint.show();
				}

				return closestPoint.distance;
			} else {
				return closestPoint;
			}
		},

		hideAll: function hideAll() {
			$(this.domNode).children('.guideline').hide();
		}

	});
	return Manager;
});
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