/**
 * Licensed Materials - Property of IBM IBM Cognos Products: Modeling UI (C) Copyright IBM Corp. 2015, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP
 * Schedule Contract with IBM Corp.
 */
define([
	'bi/glass/app/util/View',
	'underscore',
	'jquery',
	'../../StringResourcesBridge',
	'text!./templates/JoinPopupView.html',
	'bi/commons/utils/ContentFormatter',
	'../../InternalBridge'
], function(BaseView, _, $, resources, Template, ContentFormatter, InternalBridge) {

	var JoinPopupView = BaseView.extend({
		templateString: Template,

		init: function(attributes) {
			JoinPopupView.inherited('init', this, arguments);
			_.extend(this, attributes);

			this.isMultipleRelations = this.relations.length > 1;
		},

		render: function() {
			var templateObject = this.isMultipleRelations ? this._multiTemplate() : this._singleTemplate();

			var tempHTML = this.dotTemplate(templateObject);

			$(tempHTML).hide().appendTo(this.$el).fadeIn(400, function(){
				this.$el.find('.mui_JoinPopup').focus();
			}.bind(this));

			var box = this.$el.find('.mui_JoinPopup');
			box.css({
				"top": Math.max(0, this.position[1] - box.height()/2 + 25),
				"left": Math.min(Math.max(0, this.position[0] - box.width()/2 + 90), this.$el.width() - box.width() - 20)
			});

			var $sourceTitle = box.find('.mui_joinTitle_source');
			var $targetTitle = box.find('.mui_joinTitle_target');
			ContentFormatter.middleShortenString($sourceTitle);
			ContentFormatter.middleShortenString($targetTitle);

			box.on('blur', this._onBlur.bind(this));
			this.$el.on('mousewheel', this._onBlur.bind(this));
		},

		_singleTemplate: function(){

			var joinType = InternalBridge.joinUtils.relationshipMappingMinMaxEx(this.relations[0]);

			var tableParameters = {
				leftTable: this.source.label,
				rightTable: this.target.label
			};
			var desc = resources.get('unknownString');
			if (joinType.type === 'left') {
				desc = resources.get('joinTypeLeft', tableParameters);
			}
			else if (joinType.type === 'right') {
				desc = resources.get('joinTypeRight', tableParameters);
			}
			else if (joinType.type === 'full') {
				desc = resources.get('joinTypeFull', tableParameters);
			}
			else if (joinType.type === 'inner') {
				desc = resources.get('joinTypeInner');
			}

			return {
				sourceTitle: _.escape(this.source.label),
				targetTitle: _.escape(this.target.label),
				type: joinType.type,
				description: _.escape(desc),
				joinedItems: this._updateQueryItemTitles()
			};
		},

		_multiTemplate: function(){
			return {
				sourceTitle: _.escape(this.source.label),
				targetTitle: _.escape(this.target.label),
				description: '',
				joinedItems: this._updateQueryItemTitles()
			};
		},

		/**
		 * Ensure that legacy joins are displaying the title instead of the identifier
		 * of the queryItems they are joining on
		 *
		 * @return array containing an object with the titles
		 */
		_updateQueryItemTitles: function() {
			var titles = [];

			for(var i = 0; i < this.relations.length; i++) {
				var relationship = this.relations[i];
				var leftRefObject = relationship.left.getReferencedObject();
				var rightRefObject = relationship.right.getReferencedObject();
				var leftIsFromPackage = InternalBridge.moserUtils.isPartOfPackage(leftRefObject);
				var rightIsFromPackage = InternalBridge.moserUtils.isPartOfPackage(rightRefObject);
				var leftRef = relationship.left.ref;
				var rightRef = relationship.right.ref;
				var leftSide = leftIsFromPackage ? InternalBridge.moserUtils.getUseSpecByRef(leftRefObject, leftRef).identifier : leftRef;
				var rightSide = rightIsFromPackage ? InternalBridge.moserUtils.getUseSpecByRef(rightRefObject, rightRef).identifier : rightRef;

				if(this.source.identifier === leftSide && this.target.identifier === rightSide) {
					for(var j = 0; j < relationship.link.length; j++) {
						titles.push({
							leftRef: this._getQueryItemName(
								relationship.link[j].getReferencedObjectLeft(),
								relationship.link[j].leftRef
							),
							rightRef: this._getQueryItemName(
								relationship.link[j].getReferencedObjectRight(),
								relationship.link[j].rightRef
							)
						});
					}
				}
			}

			return titles;
		},

		/**
		 * Given the referenced queryItem,
		 * retrieve the label of the corresponding queryItem
		 *
		 * @param linkReferencedObject
		 * 				The referenced queryItem, if it can be found
		 * @param queryItemRef
		 * 				The queryItem's identifier
		 * @return the label of the queryItem or unknown message
		 */
		_getQueryItemName: function(linkReferencedObject, queryItemRef) {
			return _.escape(
				(linkReferencedObject && linkReferencedObject.getLabel()) ||
					resources.get('relationship_unknownItem', { value: queryItemRef })
			);
		},

		_onBlur: function(){
			this.$el.off('mousewheel');
			this.$el.find('.mui_JoinPopup ').remove();
		}
	});
	return JoinPopupView;
});