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.control.user.item.server.command;
018
019import com.echothree.control.user.item.common.form.GetItemWeightForm;
020import com.echothree.control.user.item.common.result.ItemResultFactory;
021import com.echothree.model.control.item.server.control.ItemControl;
022import com.echothree.model.control.item.server.logic.ItemLogic;
023import com.echothree.model.control.item.server.logic.ItemWeightTypeLogic;
024import com.echothree.model.control.uom.server.logic.UnitOfMeasureTypeLogic;
025import com.echothree.util.common.command.BaseResult;
026import com.echothree.util.common.message.ExecutionErrors;
027import com.echothree.util.common.validation.FieldDefinition;
028import com.echothree.util.common.validation.FieldType;
029import com.echothree.util.server.control.BaseSimpleCommand;
030import java.util.List;
031import javax.enterprise.context.Dependent;
032import javax.inject.Inject;
033
034@Dependent
035public class GetItemWeightCommand
036        extends BaseSimpleCommand<GetItemWeightForm> {
037
038    // No COMMAND_SECURITY_DEFINITION, anyone may execute this command.
039    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
040    
041    static {
042        FORM_FIELD_DEFINITIONS = List.of(
043                new FieldDefinition("ItemName", FieldType.ENTITY_NAME, true, null, null),
044                new FieldDefinition("UnitOfMeasureTypeName", FieldType.ENTITY_NAME, true, null, null),
045                new FieldDefinition("ItemWeightTypeName", FieldType.ENTITY_NAME, true, null, null)
046        );
047    }
048    
049    /** Creates a new instance of GetItemWeightCommand */
050    public GetItemWeightCommand() {
051        super(null, FORM_FIELD_DEFINITIONS, false);
052    }
053
054    @Inject
055    ItemControl itemControl;
056
057    @Inject
058    ItemLogic itemLogic;
059
060    @Inject
061    ItemWeightTypeLogic itemWeightTypeLogic;
062
063    @Inject
064    UnitOfMeasureTypeLogic unitOfMeasureTypeLogic;
065
066    @Override
067    protected BaseResult execute() {
068        var result = ItemResultFactory.getGetItemWeightResult();
069        var itemName = form.getItemName();
070        var item = itemLogic.getItemByName(this, itemName);
071
072        if(!hasExecutionErrors()) {
073            var unitOfMeasureTypeName = form.getUnitOfMeasureTypeName();
074            var unitOfMeasureKind = item.getLastDetail().getUnitOfMeasureKind();
075            var unitOfMeasureType = unitOfMeasureTypeLogic.getUnitOfMeasureTypeByName(this, unitOfMeasureKind, unitOfMeasureTypeName);
076
077            if(!hasExecutionErrors()) {
078                var itemWeightType = itemWeightTypeLogic.getItemWeightTypeByName(this, form.getItemWeightTypeName());
079
080                if(!hasExecutionErrors()) {
081                    var itemWeight = itemControl.getItemWeight(item, unitOfMeasureType, itemWeightType);
082
083                    if(itemWeight != null) {
084                        result.setItemWeight(itemControl.getItemWeightTransfer(getUserVisit(), itemWeight));
085                    } else {
086                        addExecutionError(ExecutionErrors.UnknownItemWeight.name(), item.getLastDetail().getItemName(),
087                                unitOfMeasureType.getLastDetail().getUnitOfMeasureTypeName(),
088                                itemWeightType.getLastDetail().getItemWeightTypeName());
089                    }
090                }
091            }
092        }
093
094        return result;
095    }
096    
097}