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.core.server.command;
018
019import com.echothree.control.user.core.common.form.DeleteEntityBlobAttributeForm;
020import com.echothree.model.control.core.server.control.EntityInstanceControl;
021import com.echothree.model.control.party.common.PartyTypes;
022import com.echothree.model.control.party.server.control.PartyControl;
023import com.echothree.model.data.user.common.pk.UserVisitPK;
024import com.echothree.util.common.command.BaseResult;
025import com.echothree.util.common.message.ExecutionErrors;
026import com.echothree.util.common.validation.FieldDefinition;
027import com.echothree.util.common.validation.FieldType;
028import com.echothree.util.server.control.BaseSimpleCommand;
029import com.echothree.util.server.control.CommandSecurityDefinition;
030import com.echothree.util.server.control.PartyTypeDefinition;
031import java.util.List;
032import javax.enterprise.context.Dependent;
033import javax.inject.Inject;
034
035@Dependent
036public class DeleteEntityBlobAttributeCommand
037        extends BaseSimpleCommand<DeleteEntityBlobAttributeForm> {
038
039    private final static CommandSecurityDefinition COMMAND_SECURITY_DEFINITION;
040    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
041    
042    static {
043        COMMAND_SECURITY_DEFINITION = new CommandSecurityDefinition(List.of(
044                new PartyTypeDefinition(PartyTypes.UTILITY.name(), null),
045                new PartyTypeDefinition(PartyTypes.EMPLOYEE.name(), null)
046        ));
047
048        FORM_FIELD_DEFINITIONS = List.of(
049                new FieldDefinition("EntityRef", FieldType.ENTITY_REF, true, null, null),
050                new FieldDefinition("EntityAttributeName", FieldType.ENTITY_NAME, true, null, null),
051                new FieldDefinition("LanguageIsoName", FieldType.ENTITY_NAME, true, null, null)
052        );
053    }
054
055    @Inject
056    EntityInstanceControl entityInstanceControl;
057
058    @Inject
059    PartyControl partyControl;
060
061    
062    /** Creates a new instance of DeleteEntityBlobAttributeCommand */
063    public DeleteEntityBlobAttributeCommand() {
064        super(COMMAND_SECURITY_DEFINITION, FORM_FIELD_DEFINITIONS, false);
065    }
066    
067    @Override
068    protected BaseResult execute() {
069        var entityRef = form.getEntityRef();
070        var entityInstance = entityInstanceControl.getEntityInstanceByEntityRef(entityRef);
071        
072        if(entityInstance != null) {
073            var entityAttributeName = form.getEntityAttributeName();
074            var entityAttribute = coreControl.getEntityAttributeByName(entityInstance.getEntityType(), entityAttributeName);
075            
076            if(entityAttribute != null) {
077                var languageIsoName = form.getLanguageIsoName();
078                var language = partyControl.getLanguageByIsoName(languageIsoName);
079                
080                if(language != null) {
081                    var entityBlobAttribute = coreControl.getEntityBlobAttributeForUpdate(entityAttribute, entityInstance, language);
082                    
083                    if(entityBlobAttribute != null) {
084                        coreControl.deleteEntityBlobAttribute(entityBlobAttribute, getPartyPK());
085                    } else {
086                        addExecutionError(ExecutionErrors.UnknownEntityBlobAttribute.name());
087                    }
088                } else {
089                    addExecutionError(ExecutionErrors.UnknownLanguageIsoName.name(), languageIsoName);
090                }
091            } else {
092                var entityTypeDetail = entityInstance.getEntityType().getLastDetail();
093                
094                addExecutionError(ExecutionErrors.UnknownEntityAttributeName.name(), entityTypeDetail.getComponentVendor().getLastDetail().getComponentVendorName(),
095                        entityTypeDetail.getEntityTypeName(), entityAttributeName);
096            }
097        } else {
098            addExecutionError(ExecutionErrors.UnknownEntityRef.name(), entityRef);
099        }
100        
101        return null;
102    }
103    
104}