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.message.server.command;
018
019import com.echothree.control.user.message.common.form.DeleteMessageForm;
020import com.echothree.model.control.message.server.control.MessageControl;
021import com.echothree.model.data.user.common.pk.UserVisitPK;
022import com.echothree.util.common.command.BaseResult;
023import com.echothree.util.common.message.ExecutionErrors;
024import com.echothree.util.common.validation.FieldDefinition;
025import com.echothree.util.common.validation.FieldType;
026import com.echothree.util.server.control.BaseSimpleCommand;
027import com.echothree.util.server.persistence.Session;
028import java.util.List;
029import javax.enterprise.context.Dependent;
030
031@Dependent
032public class DeleteMessageCommand
033        extends BaseSimpleCommand<DeleteMessageForm> {
034    
035    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
036    
037    static {
038        FORM_FIELD_DEFINITIONS = List.of(
039            new FieldDefinition("ComponentVendorName", FieldType.ENTITY_NAME, true, null, null),
040            new FieldDefinition("EntityTypeName", FieldType.ENTITY_TYPE_NAME, true, null, null),
041            new FieldDefinition("MessageTypeName", FieldType.ENTITY_NAME, true, null, null),
042            new FieldDefinition("MessageName", FieldType.ENTITY_NAME, true, null, null)
043        );
044    }
045    
046    /** Creates a new instance of DeleteMessageCommand */
047    public DeleteMessageCommand() {
048        super(null, FORM_FIELD_DEFINITIONS, false);
049    }
050    
051    @Override
052    protected BaseResult execute() {
053        var componentVendorName = form.getComponentVendorName();
054        var componentVendor = componentControl.getComponentVendorByName(componentVendorName);
055        
056        if(componentVendor != null) {
057            var entityTypeName = form.getEntityTypeName();
058            var entityType = entityTypeControl.getEntityTypeByName(componentVendor, entityTypeName);
059            
060            if(entityType != null) {
061                var messageControl = Session.getModelController(MessageControl.class);
062                var messageTypeName = form.getMessageTypeName();
063                var messageType = messageControl.getMessageTypeByNameForUpdate(entityType, messageTypeName);
064                
065                if(messageType != null) {
066                    var messageName = form.getMessageName();
067                    var message = messageControl.getMessageByNameForUpdate(messageType, messageName);
068                    
069                    if(message != null) {
070                        messageControl.deleteMessage(message, getPartyPK());
071                    } else {
072                        addExecutionError(ExecutionErrors.UnknownMessageName.name(), messageName);
073                    }
074                } else {
075                    addExecutionError(ExecutionErrors.UnknownMessageTypeName.name(), messageTypeName);
076                }
077            } else {
078                addExecutionError(ExecutionErrors.UnknownEntityTypeName.name(), entityTypeName);
079            }
080        } else {
081            addExecutionError(ExecutionErrors.UnknownComponentVendorName.name(), componentVendorName);
082        }
083        
084        return null;
085    }
086    
087}