001// --------------------------------------------------------------------------------
002// Copyright 2002-2025 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.forum.server.command;
018
019import com.echothree.control.user.forum.common.form.DeleteForumMessageForm;
020import com.echothree.model.control.forum.server.control.ForumControl;
021import com.echothree.model.data.user.common.pk.UserVisitPK;
022import com.echothree.util.common.message.ExecutionErrors;
023import com.echothree.util.common.validation.FieldDefinition;
024import com.echothree.util.common.validation.FieldType;
025import com.echothree.util.common.command.BaseResult;
026import com.echothree.util.server.control.BaseSimpleCommand;
027import com.echothree.util.server.persistence.Session;
028import java.util.Arrays;
029import java.util.Collections;
030import java.util.List;
031import javax.enterprise.context.RequestScoped;
032
033@RequestScoped
034public class DeleteForumMessageCommand
035        extends BaseSimpleCommand<DeleteForumMessageForm> {
036    
037    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
038    
039    static {
040        FORM_FIELD_DEFINITIONS = Collections.unmodifiableList(Arrays.asList(
041                new FieldDefinition("ForumMessageName", FieldType.ENTITY_NAME, true, null, null)
042                ));
043    }
044    
045    /** Creates a new instance of DeleteForumMessageCommand */
046    public DeleteForumMessageCommand() {
047        super(null, FORM_FIELD_DEFINITIONS, false);
048    }
049    
050    @Override
051    protected BaseResult execute() {
052        var forumControl = Session.getModelController(ForumControl.class);
053        var forumMessageName = form.getForumMessageName();
054        var forumMessage = forumControl.getForumMessageByNameForUpdate(forumMessageName);
055        
056        if(forumMessage != null) {
057            var forumThread = forumMessage.getLastDetail().getForumThreadForUpdate();
058            var deletedBy = getPartyPK();
059            
060            if(forumControl.countForumMessagesByForumThread(forumThread) == 1) {
061                forumControl.deleteForumThread(forumThread, deletedBy);
062            } else {
063                forumControl.deleteForumMessage(forumMessage, deletedBy);
064            }
065        } else {
066            addExecutionError(ExecutionErrors.UnknownForumMessageName.name(), forumMessageName);
067        }
068        
069        return null;
070    }
071    
072}