'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * Licensed Materials - Property of IBM
 * IBM Business Analytics (C) Copyright IBM Corp. 2020
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

/**
 * @class VisDnDColumnToSlotProvider
 * @hideconstructor
 *
 * @classdesc Handles drag and drop of metadata to slot to create a visualization.
 */
define(['underscore', '../../../../../lib/@waca/dashboard-common/dist/core/APIFactory', '../../../../../dataSources/utils/ShapingUIUtils', '../../VisMapColumnsToSlot', 'dashboard-analytics/apiHelpers/SlotAPIHelper', 'dashboard-analytics/widgets/livewidget/nls/StringResources'], function (_, APIFactory, ShapingUIUtils, VisMapColumnsToSlot, SlotAPIHelper, StringResources) {
	var MULTI_MEASURES_SERIES = '_multiMeasuresSeries';

	return function () {
		function VisDnDColumnToSlotProvider() {
			var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

			_classCallCheck(this, VisDnDColumnToSlotProvider);

			this.visDnDUtils = options.visDnDUtils;
			this.dashboardAPI = options.dashboardAPI;
			this.datasources = options.datasources;
			this.datasourcesMoser = options.datasourcesMoser;
			this.content = options.content;
			this.visualization = options.visualization;
			this.transaction = options.transaction;

			this.visMapColumnsToSlot = new VisMapColumnsToSlot({
				content: this.content,
				visualization: this.visualization,
				transaction: this.transaction
			});
		}

		VisDnDColumnToSlotProvider.prototype.destroy = function destroy() {
			this.dashboardAPI = null;
			this.content = null;
			this.visDnDUtils = null;
			this.datasources = null;
			this.datasourcesMoser = null;
			this.visualization = null;
			this.transaction = null;
		};

		/**
   * @param {Object} source - the DndSource defined by whichever source starts the drag
   * @param {Object} target - the DnDTarget defined by the drop target which includes target specific information.
   * @param {String} target.el - the drop node.
   * @param {String} target.type - the type of the target (eg. slot.item)
   * @param {String} target.info - a target-specific function which includes information about that target.
   * @return {boolean} true if this provider supports the dndSource and target.
   */


		VisDnDColumnToSlotProvider.prototype.supports = function supports(source, target) {
			return (target.type === 'slot.item' || target.info.type === 'slot.item') && source.type === 'A11YMetadataColumns' || (source.type === 'MODEL_ITEM' || source.type === 'GRID_HEADER_ITEM') && source.data.columns || this._isMetadataColumnArray(source);
		};

		VisDnDColumnToSlotProvider.prototype._getA11YData = function _getA11YData(sourceId) {
			var module = sourceId && this.datasourcesMoser.getModule(sourceId);
			var copiedTreeItems = ShapingUIUtils.getCopiedTreeItems(module, this.dashboardAPI);
			return copiedTreeItems && copiedTreeItems.data && copiedTreeItems.data;
		};

		VisDnDColumnToSlotProvider.prototype._clearA11YData = function _clearA11YData() {
			ShapingUIUtils.clearCopiedTreeItems();
			this.dashboardAPI.triggerDashboardEvent('dataSourceGrid:clearSourceSelected');
		};

		VisDnDColumnToSlotProvider.prototype._isMetadataColumnArray = function _isMetadataColumnArray(sourceData) {
			return sourceData.type === 'metadataColumns' && Array.isArray(sourceData.data);
		};

		//The ColumnToSlot provider accepts 3 forms of input
		//1) For a11y, a hint exists in the source that indicates we need to fetch it from shaping.
		//2) Columns as from drag&drop data (which we receive from an actual drag&drop)
		//3) metadataColumns as a simple array of metadataColumnAPI's (which we receive from type-in)


		VisDnDColumnToSlotProvider.prototype._getNormalizedMetadataColumnArray = function _getNormalizedMetadataColumnArray(source) {
			if (source.type === 'A11YMetadataColumns') {
				var a11YData = this._getA11YData(this.dashboardAPI.getActiveDataSourceId());
				return a11YData && a11YData.columns;
			} else if (source.data && source.data.columns) {
				return source.data.columns;
			} else if (this._isMetadataColumnArray(source)) {
				return source.data.map(function (column) {
					return { metadataColumn: column };
				});
			}
			return null; //Its can't be normalized into valid input.
		};

		VisDnDColumnToSlotProvider.prototype.accepts = function accepts(source, target) {
			if (source.data && source.data.utils && source.data.utils.isValid()) {
				return this._acceptsMetadataColumns(source, target);
			}
			return false;
		};

		VisDnDColumnToSlotProvider.prototype.onDrop = function onDrop(source, target) {
			var droppedColumns = this._getNormalizedMetadataColumnArray(source);
			if (!this.visDnDUtils.validateSupportsOLAP(droppedColumns.map(function (c) {
				return c.metadataColumn;
			}))) {
				this.dashboardAPI.getFeature('Notification').setMessage(StringResources.get('visualizationDoesNotSupportOLAP'));
				return false;
			}
			var addAfter = target.info.addAfter;
			var position = addAfter ? target.info.indexInSlot + 1 : target.info.indexInSlot;
			var transactionToken = this.transaction.startTransaction();
			var options = {
				bReplace: addAfter || position < 0 ? false : true,
				position: position,
				canSetLocalFilters: this._isMetadataColumnArray(source) ? false : true, //TODO: Not sure about this. Looks like its for member DnD.
				activeDataSourceId: this.dashboardAPI.getActiveDataSourceId()
			};
			this.visMapColumnsToSlot.mapColumns(target.info.slot.getId(), droppedColumns, options, transactionToken);
			if (source.type === 'A11YMetadataColumns') {
				this._clearA11YData();
			}
			this.transaction.endTransaction(transactionToken);
		};

		//Can this slotDataItem accept these items from the metadata tree or shaping grid? (aka metadataColumns)


		VisDnDColumnToSlotProvider.prototype._acceptsMetadataColumns = function _acceptsMetadataColumns(source, target) {
			var sourceData = source.data;
			var metadataColumns = sourceData;
			var metadataColumnsWithMembers = {};
			if (sourceData && sourceData.columns) {
				metadataColumns = _.map(sourceData.columns, function (column) {
					return column.metadataColumn;
				});
				metadataColumnsWithMembers = sourceData.utils && sourceData.utils.getColumnsWithMembers();
			}
			if (!metadataColumns.length) {
				return false;
			}

			//You CAN'T drop metadataColumns if any columns don't match the sourceId of this widget.
			var currentSourceId = this.getDatasourceId();
			var isDifferentSourceColumn = function isDifferentSourceColumn(metadataColumn) {
				/* needed to handle both metadataColumnApi and metadataColumn */
				var columnSourceId = metadataColumn.getSourceId ? metadataColumn.getSourceId() : metadataColumn.sourceId;
				return currentSourceId && currentSourceId !== columnSourceId;
			};
			if (metadataColumns.some(isDifferentSourceColumn)) {
				return false;
			}

			//You CAN'T drop metadatacolumns that have certain taxonomy characteristics
			if (!this._itemsSupported(metadataColumns, target.info.slot)) {
				return false;
			}

			// //You CAN'T drop on top of the placeholder dataItem 'Measure Group (n)' from the metadata tree.  You CAN drop after it.
			if (!target.info.addAfter && this.isMeasureGroupItem(target.info.slot, target.info.indexInSlot)) {
				return false;
			}

			//You CAN'T drop a filter
			if (metadataColumns.some(function (metadataColumn) {
				return metadataColumn.getObjectType() === 'Filter';
			})) {
				return false;
			}

			//Check what hierarchies (if any) the dropped columns belong to.
			//Don't allow drop if any are in a hierarchy that is already being used in the visualization.
			var oHierarchyMap = {};
			if (ShapingUIUtils.isInvalidDragObject(metadataColumns, oHierarchyMap, metadataColumnsWithMembers, false /* metadataColumnsExist */) || this._isRestrictedForMembersOfSameHierarchy(metadataColumns, metadataColumnsWithMembers, target.info.slot.getId()) || ShapingUIUtils.isInvalidDragObject(this._getUsedMetadataColumns(), oHierarchyMap, metadataColumnsWithMembers, true /* metadataColumnsExist */)) {
				return false;
			}

			//You CAN'T drop more items than the slot can allow.
			var countItems = this._getCountItemsInDropData(metadataColumnsWithMembers, target.info.slot);
			return this._acceptsCommon(source, target, countItems, target.info.addAfter);
		};

		VisDnDColumnToSlotProvider.prototype.getDatasourceId = function getDatasourceId() {
			var dataSource = this.visualization.getDataSource();
			if (dataSource) {
				return dataSource.getId();
			}
			return null;
		};

		VisDnDColumnToSlotProvider.prototype.isMeasureGroupItem = function isMeasureGroupItem(slot, indexInSlot) {
			if (SlotAPIHelper.isMultiMeasuresSeriesSlot(slot)) {
				var thisDataItem = slot.getDataItemList()[indexInSlot];
				return thisDataItem && thisDataItem.getColumnId() === '_multiMeasuresSeries';
			}
			return false;
		};

		// Restrict to drop members of same hierarchy or namedSet in different slots


		VisDnDColumnToSlotProvider.prototype._isRestrictedForMembersOfSameHierarchy = function _isRestrictedForMembersOfSameHierarchy(metadataColumns, metadataColumnsWithMembers, slotId) {
			if (_.isEmpty(metadataColumnsWithMembers)) {
				return false;
			}
			// Get items from dropped columns that are hierarchy or namedSet
			var droppedColumnsWithMembers = [];
			metadataColumns.forEach(function (column) {
				if (column.isHierarchy() || column.isNamedSet()) {
					droppedColumnsWithMembers.push(column.getId());
				}
			});
			if (!droppedColumnsWithMembers.length) {
				return false;
			}
			// Get all items from other slots that are hierarchy or namedSet
			var itemsFromOtherSlots = this._getColumnsFromHierarchyOrNamedSetOfOtherSlots(slotId);
			if (!itemsFromOtherSlots.length) {
				return false;
			}
			if (!_.intersection(droppedColumnsWithMembers, itemsFromOtherSlots).length) {
				return false;
			}
			return true;
		};

		VisDnDColumnToSlotProvider.prototype._getColumnsFromHierarchyOrNamedSetOfOtherSlots = function _getColumnsFromHierarchyOrNamedSetOfOtherSlots(targetSlotId) {
			var itemsFromOtherSlots = [];
			this.visualization.getSlots().getSlotList().forEach(function (slot) {
				if (slot.getDefinition().getId() !== targetSlotId) {
					slot.getDataItemList().forEach(function (dataItem) {
						var column = dataItem.getMetadataColumn && dataItem.getMetadataColumn();
						if (column && (column.isHierarchy() || column.isNamedSet())) {
							itemsFromOtherSlots.push(column.getId());
						}
					});
				}
			});
			return itemsFromOtherSlots;
		};

		/**
   * return a list of metadataColumns all the projected dataItems except MultiMeasure item.
   */


		VisDnDColumnToSlotProvider.prototype._getUsedMetadataColumns = function _getUsedMetadataColumns() {
			var dataItemList = this.visualization.getSlots().getDataItemList();
			return dataItemList.filter(function (dataItem) {
				return dataItem.getColumnId() !== MULTI_MEASURES_SERIES;
			}).map(function (dataItem) {
				return dataItem.getMetadataColumn();
			});
		};

		VisDnDColumnToSlotProvider.prototype._getMappedItemsOfTargetSlot = function _getMappedItemsOfTargetSlot(slot) {
			var mappedItems = [];
			slot.getDataItemList().forEach(function (dataItem) {
				if (dataItem.getMetadataColumn) {
					mappedItems.push(dataItem.getMetadataColumn().getId());
				}
			});
			return mappedItems;
		};

		VisDnDColumnToSlotProvider.prototype._itemsSupported = function _itemsSupported(metadataColumns, slot) {
			//convert to new metadataColumn api
			var sourceId = metadataColumns[0].getSourceId();
			var dataSource = sourceId && this.datasources.getDataSource(sourceId);
			if (dataSource) {
				var newMetadataColumnAPIs = metadataColumns.map(function (metadataColumn) {
					return dataSource.getMetadataColumn(metadataColumn.getId());
				});
				return slot.supportsColumns(newMetadataColumnAPIs);
			}
			return false;
		};

		// We count only columns that are not already in the slot


		VisDnDColumnToSlotProvider.prototype._getCountItemsInDropData = function _getCountItemsInDropData(metadataColumnsWithMembers, slot) {
			var _ref;

			if (!metadataColumnsWithMembers) {
				return 1;
			}
			var memberParentIds = Object.keys(metadataColumnsWithMembers);
			var members = Object.values(metadataColumnsWithMembers);
			var flattenedMembers = (_ref = []).concat.apply(_ref, members);
			if (!flattenedMembers.length) {
				// dropped columns are not members, count all
				return memberParentIds.length;
			}
			var mappedItemIds = this._getMappedItemsOfTargetSlot(slot);
			// do not count items that already exist in the slot
			var diffs = memberParentIds.filter(function (id) {
				return mappedItemIds.indexOf(id) === -1;
			});
			return diffs.length;
		};

		VisDnDColumnToSlotProvider.prototype._acceptsCommon = function _acceptsCommon(source, target, countOfItemsToDrop, addAfter) {
			//IF this definition contains (or could contain) a multiMeasuresSeries item,
			//You CAN drop on or after in a values slot (even though values has maxItems of 1 => multi-items go where 'Measure Group (n)' is)
			if (target.info.slot.getId() === 'values' && SlotAPIHelper.isMultiMeasuresSeriesSlot(target.info.slot) || target.info.slot.getDefinition().isMultiMeasureSupported()) {
				return true;
			}

			//{ targetSlotId, sourceSlotId, indexInSourceSlot, sourceColumns, indexInTargetSlot, isReplace }
			var params = {
				targetSlotId: target.info.slot.getId(),
				sourceSlotId: undefined,
				indexInSourceSlot: undefined,
				sourceColumns: _.map(source.data.columns, function (column) {
					return column.metadataColumn;
				}),
				indexInTargetSlot: target.info.addAfter ? target.info.indexInSlot + 1 : target.info.indexInSlot,
				isReplace: !target.info.addAfter
			};
			var expandCollapseFeatureFlag = !this.dashboardAPI.getGlassCoreSvc('.FeatureChecker').checkValue('dashboard', 'expandCollapse', 'disabled');
			if (expandCollapseFeatureFlag && this.visualization.getType() === 'Crosstab') {
				if (!this.visDnDUtils.acceptsOlapV2(params)) {
					return false;
				}
			}

			//You CAN'T drop more items than the slot can allow.
			return !this.visDnDUtils.exceedsItemsLimit(countOfItemsToDrop, target.info.indexInSlot, addAfter, target.info.slot);
		};

		return VisDnDColumnToSlotProvider;
	}();
});
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