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.chain.server.command;
018
019import com.echothree.control.user.chain.common.form.GetChainInstancesForm;
020import com.echothree.control.user.chain.common.result.ChainResultFactory;
021import com.echothree.model.control.chain.server.control.ChainControl;
022import com.echothree.model.data.user.common.pk.UserVisitPK;
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.common.command.BaseResult;
027import com.echothree.util.server.control.BaseSimpleCommand;
028import com.echothree.util.server.persistence.Session;
029import java.util.Arrays;
030import java.util.Collections;
031import java.util.List;
032import javax.enterprise.context.RequestScoped;
033
034@RequestScoped
035public class GetChainInstancesCommand
036        extends BaseSimpleCommand<GetChainInstancesForm> {
037    
038    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
039    
040    static {
041        FORM_FIELD_DEFINITIONS = Collections.unmodifiableList(Arrays.asList(
042                new FieldDefinition("ChainKindName", FieldType.ENTITY_NAME, true, null, null),
043                new FieldDefinition("ChainTypeName", FieldType.ENTITY_NAME, true, null, null),
044                new FieldDefinition("ChainName", FieldType.ENTITY_NAME, true, null, null)
045                ));
046    }
047    
048    /** Creates a new instance of GetChainInstancesCommand */
049    public GetChainInstancesCommand() {
050        super(null, FORM_FIELD_DEFINITIONS, true);
051    }
052    
053    @Override
054    protected BaseResult execute() {
055        var chainControl = Session.getModelController(ChainControl.class);
056        var result = ChainResultFactory.getGetChainInstancesResult();
057        var chainKindName = form.getChainKindName();
058        var chainKind = chainControl.getChainKindByName(chainKindName);
059        
060        if(chainKind != null) {
061            var chainTypeName = form.getChainTypeName();
062            var chainType = chainControl.getChainTypeByName(chainKind, chainTypeName);
063            
064            if(chainType != null) {
065                var chainName = form.getChainName();
066                var chain = chainControl.getChainByName(chainType, chainName);
067                
068                if(chain != null) {
069                    result.setChain(chainControl.getChainTransfer(getUserVisit(), chain));
070                    result.setChainInstances(chainControl.getChainInstanceTransfersByChain(getUserVisit(), chain));
071                } else {
072                    addExecutionError(ExecutionErrors.UnknownChainName.name(), chainKindName, chainTypeName, chainName);
073                }
074            } else {
075                addExecutionError(ExecutionErrors.UnknownChainTypeName.name(), chainKindName, chainTypeName);
076            }
077        } else {
078            addExecutionError(ExecutionErrors.UnknownChainKindName.name(), chainKindName);
079        }
080        
081        return result;
082    }
083    
084}