'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. 2019, 2020
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

/**
 * @class DataModel
 * @hideconstructor
 * @classdesc Provides access to the data model
 */
define(['../UniqueID', '../../../lib/@waca/dashboard-common/dist/core/UniqueHashIdBuilder'], function (UniqueID, UniqueHashIdBuilder) {

	return function () {
		function DataModel(dataModelJson) {
			_classCallCheck(this, DataModel);

			this._dataModel = dataModelJson;
			this._currentIdList = this._processCurrentDataItemIds();
		}

		DataModel.prototype._processCurrentDataItemIds = function _processCurrentDataItemIds() {
			var idList = [];
			var dataViews = this._dataModel.dataViews;
			if (dataViews) {
				for (var i = 0; i < dataViews.length; i++) {
					if (!dataViews[i].id) {
						dataViews[i].id = UniqueID.generate('model');
					}
					var dataItems = dataViews[i].dataItems;
					if (dataItems) {
						for (var j = 0; j < dataItems.length; j++) {
							if (!dataItems[j].id) {
								var dataItemId = UniqueHashIdBuilder.createUniqueHashId(dataItems[j].itemId, idList);
								dataItems[j].id = dataItemId;
							}
							idList.push(dataItems[j].id);
						}
					}
				}
			}
			return idList;
		};

		DataModel.prototype.setModelRefInAllViews = function setModelRefInAllViews(modelRef) {
			var dataViews = this._dataModel.dataViews;
			var isSet = false;
			if (dataViews) {
				for (var i = 0; i < dataViews.length; i++) {
					isSet = true;
					dataViews[i].modelRef = modelRef;
				}
			}
			if (!isSet) {
				// create a default data view and set the model ref
				this.createDataView().modelRef = modelRef;
			}
		};

		DataModel.prototype.removeDataView = function removeDataView(viewId) {
			var dataViews = this._dataModel.dataViews;
			if (dataViews) {
				this._dataModel.dataViews = dataViews.filter(function (dataView) {
					return dataView.id !== viewId;
				});
			}
		};

		DataModel.prototype.getDataView = function getDataView(viewId) {
			var dataView = null;
			var dataViews = this._dataModel.dataViews;
			if (dataViews) {
				for (var i = 0; i < dataViews.length; i++) {
					// If view id is not provided, default to first view id.
					if (!viewId && i === 0 || dataViews[i].id === viewId) {
						dataView = dataViews[i];
						break;
					}
				}
			}

			return dataView;
		};

		DataModel.prototype.createDataView = function createDataView(id) {
			if (!this._dataModel.dataViews) {
				this._dataModel.dataViews = [];
			}
			var dataView = {
				id: id || UniqueID.generate('model')
			};
			this._dataModel.dataViews.push(dataView);
			return dataView;
		};

		DataModel.prototype.moveDataItemsToView = function moveDataItemsToView(dataItemIds, viewId) {
			var _this = this;

			dataItemIds.forEach(function (id) {
				var info = _this._getDataItemInfo(id);
				if (info.dataView.id !== viewId) {
					_this.addDataItem(info.dataItem, viewId);
				}
			});
		};

		DataModel.prototype.getDataViewIdForDataItem = function getDataViewIdForDataItem(dataItemId) {
			var info = this._getDataItemInfo(dataItemId);
			return info ? info.dataView.id : null;
		};

		DataModel.prototype.getDataItem = function getDataItem(dataItemId) {
			var info = this._getDataItemInfo(dataItemId);
			return info ? info.dataItem : null;
		};

		DataModel.prototype.removeDataItem = function removeDataItem(id, hasLocalFilter) {
			var removed = void 0;
			var info = this._getDataItemInfo(id);
			if (info) {
				info.dataView.dataItems.splice(info.dataItemIndex, 1);

				var idIndex = this._currentIdList.indexOf(id);
				if (idIndex !== -1) {
					this._currentIdList.splice(idIndex, 1);
				}

				removed = info.dataItem;
				if (info.dataView.dataItems.length === 0 && !hasLocalFilter) {
					// remove the empty dataView
					this.removeDataView(info.dataView.id);
				}
			}

			return removed;
		};

		DataModel.prototype.addDataItem = function addDataItem(dataItem, viewId) {

			if (!dataItem.id) {
				// We generate a predicatable unique id based on the column id
				dataItem.id = UniqueHashIdBuilder.createUniqueHashId(dataItem.columnId, this._currentIdList);
			}
			this._currentIdList.push(dataItem.id);

			// First remove it if it already exists
			var model = this.removeDataItem(dataItem.id);
			if (!model) {
				// Pick only id, itemId, columnId, itemLabel and navigationPathId
				// Eventually we will support more..
				model = function (_ref) {
					var id = _ref.id,
					    itemId = _ref.itemId,
					    columnId = _ref.columnId,
					    itemLabel = _ref.itemLabel,
					    navigationPathId = _ref.navigationPathId;
					return { id: id, itemId: itemId, columnId: columnId, itemLabel: itemLabel, navigationPathId: navigationPathId };
				}(dataItem);

				// The internal spec use itemId instead of columnId
				if (model.columnId) {
					model.itemId = model.columnId;
					delete model.columnId;
				}
			}

			// Find or create the target dataView
			var dataView = this.getDataView(viewId);

			if (!dataView) {
				dataView = this.createDataView();
			}

			if (!dataView.dataItems) {
				dataView.dataItems = [];
			}

			dataView.dataItems.push(model);

			return model;
		};

		DataModel.prototype.getDataItemList = function getDataItemList() {
			var result = [];
			var dataViews = this._dataModel.dataViews;
			if (dataViews) {
				for (var i = 0; i < dataViews.length; i++) {
					var dataItems = dataViews[i].dataItems;
					if (dataItems) {
						for (var j = 0; j < dataItems.length; j++) {
							result.push(dataItems[j]);
						}
					}
				}
			}
			return result;
		};

		DataModel.prototype._getDataItemInfo = function _getDataItemInfo(dataItemId) {
			var dataItemInfo = null;
			var dataViews = this._dataModel.dataViews;
			if (dataViews) {
				for (var i = 0; i < dataViews.length; i++) {
					var dataItems = dataViews[i].dataItems;
					if (dataItems) {
						for (var j = 0; j < dataItems.length; j++) {
							if (dataItems[j].id === dataItemId) {
								dataItemInfo = {
									dataItem: dataItems[j],
									dataView: dataViews[i],
									dataItemIndex: j,
									dataViewIndex: i
								};
								break;
							}
						}
					}
					if (dataItemInfo) {
						break;
					}
				}
			}
			return dataItemInfo;
		};

		return DataModel;
	}();
});
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