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.letter.server.command;
018
019import com.echothree.control.user.letter.common.form.GetLettersForm;
020import com.echothree.control.user.letter.common.result.LetterResultFactory;
021import com.echothree.model.control.chain.server.control.ChainControl;
022import com.echothree.model.control.chain.server.logic.ChainTypeLogic;
023import com.echothree.model.control.letter.server.control.LetterControl;
024import com.echothree.model.control.party.common.PartyTypes;
025import com.echothree.model.control.security.common.SecurityRoleGroups;
026import com.echothree.model.control.security.common.SecurityRoles;
027import com.echothree.model.data.chain.server.entity.ChainType;
028import com.echothree.model.data.letter.server.entity.Letter;
029import com.echothree.model.data.letter.server.factory.LetterFactory;
030import com.echothree.util.common.command.BaseResult;
031import com.echothree.util.common.validation.FieldDefinition;
032import com.echothree.util.common.validation.FieldType;
033import com.echothree.util.server.control.BasePaginatedMultipleEntitiesCommand;
034import com.echothree.util.server.control.CommandSecurityDefinition;
035import com.echothree.util.server.control.PartyTypeDefinition;
036import com.echothree.util.server.control.SecurityRoleDefinition;
037import java.util.Collection;
038import java.util.List;
039import javax.enterprise.context.Dependent;
040import javax.inject.Inject;
041
042@Dependent
043public class GetLettersCommand
044        extends BasePaginatedMultipleEntitiesCommand<Letter, GetLettersForm> {
045    
046    private final static CommandSecurityDefinition COMMAND_SECURITY_DEFINITION;
047    private final static List<FieldDefinition> FORM_FIELD_DEFINITIONS;
048    
049    static {
050        COMMAND_SECURITY_DEFINITION = new CommandSecurityDefinition(List.of(
051                new PartyTypeDefinition(PartyTypes.UTILITY.name(), null),
052                new PartyTypeDefinition(PartyTypes.EMPLOYEE.name(), List.of(
053                        new SecurityRoleDefinition(SecurityRoleGroups.Letter.name(), SecurityRoles.List.name())
054                ))
055        ));
056        
057        FORM_FIELD_DEFINITIONS = List.of(
058                new FieldDefinition("ChainKindName", FieldType.ENTITY_NAME, true, null, null),
059                new FieldDefinition("ChainTypeName", FieldType.ENTITY_NAME, true, null, null)
060        );
061    }
062    
063    @Inject
064    ChainControl chainControl;
065
066    @Inject
067    LetterControl letterControl;
068
069    @Inject
070    ChainTypeLogic chainTypeLogic;
071
072    /** Creates a new instance of GetLettersCommand */
073    public GetLettersCommand() {
074        super(COMMAND_SECURITY_DEFINITION, FORM_FIELD_DEFINITIONS, true);
075    }
076
077    ChainType chainType;
078
079    @Override
080    protected void handleForm() {
081        var chainKindName = form.getChainKindName();
082        var chainTypeName = form.getChainTypeName();
083
084        chainType = chainTypeLogic.getChainTypeByName(this, chainKindName, chainTypeName);
085    }
086
087    @Override
088    protected Long getTotalEntities() {
089        return hasExecutionErrors() ? null : letterControl.countLettersByChainType(chainType);
090    }
091
092    @Override
093    protected Collection<Letter> getEntities() {
094        return hasExecutionErrors() ? null : letterControl.getLettersByChainType(chainType);
095    }
096
097    @Override
098    protected BaseResult getResult(Collection<Letter> entities) {
099        var result = LetterResultFactory.getGetLettersResult();
100
101        if(entities != null) {
102            var userVisit = getUserVisit();
103
104            result.setChainType(chainControl.getChainTypeTransfer(userVisit, chainType));
105
106            if(session.hasLimit(LetterFactory.class)) {
107                result.setLetterCount(getTotalEntities());
108            }
109
110            result.setLetters(letterControl.getLetterTransfers(userVisit, entities));
111        }
112
113        return result;
114    }
115    
116}