001// --------------------------------------------------------------------------------
002// Copyright 2002-2026 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.model.control.item.server.logic;
018
019import com.echothree.model.control.item.common.exception.MissingDefaultItemCategoryException;
020import com.echothree.model.control.item.common.exception.UnknownItemCategoryNameException;
021import com.echothree.model.control.item.server.control.ItemControl;
022import com.echothree.model.data.item.server.entity.ItemCategory;
023import com.echothree.util.common.message.ExecutionErrors;
024import com.echothree.util.common.persistence.BasePK;
025import com.echothree.util.server.control.BaseLogic;
026import com.echothree.util.server.message.ExecutionErrorAccumulator;
027import com.echothree.util.server.persistence.EntityPermission;
028import javax.enterprise.context.ApplicationScoped;
029import javax.inject.Inject;
030
031@ApplicationScoped
032public class ItemCategoryLogic
033        extends BaseLogic {
034
035    @Inject
036    ItemControl itemControl;
037
038    protected ItemCategoryLogic() {
039        super();
040    }
041
042    public ItemCategory getItemCategoryByName(final ExecutionErrorAccumulator eea, final String itemCategoryName, EntityPermission entityPermission) {
043        var itemCategory = itemControl.getItemCategoryByName(itemCategoryName, entityPermission);
044
045        if(itemCategory == null) {
046            handleExecutionError(UnknownItemCategoryNameException.class, eea, ExecutionErrors.UnknownItemCategoryName.name(), itemCategoryName);
047        }
048
049        return itemCategory;
050    }
051
052    public ItemCategory getItemCategoryByName(final ExecutionErrorAccumulator eea, final String itemCategoryName) {
053        return getItemCategoryByName(eea, itemCategoryName, EntityPermission.READ_ONLY);
054    }
055
056    public ItemCategory getItemCategoryByNameForUpdate(final ExecutionErrorAccumulator eea, final String itemCategoryName) {
057        return getItemCategoryByName(eea, itemCategoryName, EntityPermission.READ_WRITE);
058    }
059
060    private long countItemsByItemCategoryChildren(final ItemControl itemControl, final ItemCategory parentItemCategory) {
061        var itemCategoryChildren = itemControl.getItemCategoriesByParentItemCategory(parentItemCategory);
062        var total = itemControl.countItemsByItemCategory(parentItemCategory);
063
064        total = itemCategoryChildren.stream().map((childItemCategory) -> countItemsByItemCategoryChildren(itemControl, childItemCategory)).reduce(total, (accumulator, _item) -> accumulator + _item);
065
066        return total;
067    }
068
069    public void checkDeleteItemCategory(final ExecutionErrorAccumulator ema, final ItemCategory itemCategory) {
070        if(countItemsByItemCategoryChildren(itemControl, itemCategory) != 0) {
071            ema.addExecutionError(ExecutionErrors.CannotDeleteItemCategoryInUse.name(), itemCategory.getLastDetail().getItemCategoryName());
072        }
073    }
074
075
076    public ItemCategory getDefaultItemCategory(final ExecutionErrorAccumulator eea) {
077        var itemCategory = itemControl.getDefaultItemCategory();
078
079        if(itemCategory == null) {
080            handleExecutionError(MissingDefaultItemCategoryException.class, eea, ExecutionErrors.MissingDefaultItemCategory.name());
081        }
082        
083        return itemCategory;
084    }
085    
086    public void deleteItemCategory(final ItemCategory itemCategory, final BasePK deletedBy) {
087        itemControl.deleteItemCategory(itemCategory, deletedBy);
088    }
089
090}