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.GetMessageForm;
020import com.echothree.control.user.message.common.result.MessageResultFactory;
021import com.echothree.model.control.core.common.EventTypes;
022import com.echothree.model.control.message.server.control.MessageControl;
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.persistence.Session;
030import java.util.List;
031import javax.enterprise.context.Dependent;
032
033@Dependent
034public class GetMessageCommand
035        extends BaseSimpleCommand<GetMessageForm> {
036    
037    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
038    
039    static {
040        FORM_FIELD_DEFINITIONS = List.of(
041            new FieldDefinition("ComponentVendorName", FieldType.ENTITY_NAME, true, null, null),
042            new FieldDefinition("EntityTypeName", FieldType.ENTITY_TYPE_NAME, true, null, null),
043            new FieldDefinition("MessageTypeName", FieldType.ENTITY_NAME, true, null, null),
044            new FieldDefinition("MessageName", FieldType.ENTITY_NAME, true, null, null)
045        );
046    }
047    
048    /** Creates a new instance of GetMessageCommand */
049    public GetMessageCommand() {
050        super(null, FORM_FIELD_DEFINITIONS, true);
051    }
052    
053    @Override
054    protected BaseResult execute() {
055        var result = MessageResultFactory.getGetMessageResult();
056        var componentVendorName = form.getComponentVendorName();
057        var componentVendor = componentControl.getComponentVendorByName(componentVendorName);
058        
059        if(componentVendor != null) {
060            var userVisit = getUserVisit();
061            var entityTypeName = form.getEntityTypeName();
062            var entityType = entityTypeControl.getEntityTypeByName(componentVendor, entityTypeName);
063            
064            result.setComponentVendor(componentControl.getComponentVendorTransfer(userVisit, componentVendor));
065            
066            if(entityType != null) {
067                var messageControl = Session.getModelController(MessageControl.class);
068                var messageTypeName = form.getMessageTypeName();
069                var messageType = messageControl.getMessageTypeByName(entityType, messageTypeName);
070                
071                result.setEntityType(entityTypeControl.getEntityTypeTransfer(userVisit, entityType));
072                
073                if(messageType != null) {
074                    var messageName = form.getMessageName();
075                    var message = messageControl.getMessageByName(messageType, messageName);
076                    
077                    result.setMessageType(messageControl.getMessageTypeTransfer(userVisit, messageType));
078                    
079                    if(message != null) {
080                        result.setMessage(messageControl.getMessageTransfer(userVisit, message));
081                        
082                        sendEvent(messageType.getPrimaryKey(), EventTypes.READ, null, null, getPartyPK());
083                    } else {
084                        addExecutionError(ExecutionErrors.UnknownMessageName.name(), messageName);
085                    }
086                } else {
087                    addExecutionError(ExecutionErrors.UnknownMessageTypeName.name(), messageTypeName);
088                }
089            } else {
090                addExecutionError(ExecutionErrors.UnknownEntityTypeName.name(), entityTypeName);
091            }
092        } else {
093            addExecutionError(ExecutionErrors.UnknownComponentVendorName.name(), componentVendorName);
094        }
095        
096        return result;
097    }
098    
099}