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 com.echothree.util.server.persistence.Session;
032import java.util.List;
033import javax.enterprise.context.Dependent;
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    /** Creates a new instance of DeleteEntityBlobAttributeCommand */
056    public DeleteEntityBlobAttributeCommand() {
057        super(COMMAND_SECURITY_DEFINITION, FORM_FIELD_DEFINITIONS, false);
058    }
059    
060    @Override
061    protected BaseResult execute() {
062        var entityInstanceControl = Session.getModelController(EntityInstanceControl.class);
063        var entityRef = form.getEntityRef();
064        var entityInstance = entityInstanceControl.getEntityInstanceByEntityRef(entityRef);
065        
066        if(entityInstance != null) {
067            var entityAttributeName = form.getEntityAttributeName();
068            var entityAttribute = coreControl.getEntityAttributeByName(entityInstance.getEntityType(), entityAttributeName);
069            
070            if(entityAttribute != null) {
071                var partyControl = Session.getModelController(PartyControl.class);
072                var languageIsoName = form.getLanguageIsoName();
073                var language = partyControl.getLanguageByIsoName(languageIsoName);
074                
075                if(language != null) {
076                    var entityBlobAttribute = coreControl.getEntityBlobAttributeForUpdate(entityAttribute, entityInstance, language);
077                    
078                    if(entityBlobAttribute != null) {
079                        coreControl.deleteEntityBlobAttribute(entityBlobAttribute, getPartyPK());
080                    } else {
081                        addExecutionError(ExecutionErrors.UnknownEntityBlobAttribute.name());
082                    }
083                } else {
084                    addExecutionError(ExecutionErrors.UnknownLanguageIsoName.name(), languageIsoName);
085                }
086            } else {
087                var entityTypeDetail = entityInstance.getEntityType().getLastDetail();
088                
089                addExecutionError(ExecutionErrors.UnknownEntityAttributeName.name(), entityTypeDetail.getComponentVendor().getLastDetail().getComponentVendorName(),
090                        entityTypeDetail.getEntityTypeName(), entityAttributeName);
091            }
092        } else {
093            addExecutionError(ExecutionErrors.UnknownEntityRef.name(), entityRef);
094        }
095        
096        return null;
097    }
098    
099}