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.model.control.core.server.logic;
018
019import com.echothree.control.user.core.common.spec.AppearanceUniversalSpec;
020import com.echothree.model.control.core.common.ComponentVendors;
021import com.echothree.model.control.core.common.EntityTypes;
022import com.echothree.model.control.core.common.exception.InvalidParameterCountException;
023import com.echothree.model.control.core.common.exception.UnknownAppearanceNameException;
024import com.echothree.model.control.core.server.control.AppearanceControl;
025import com.echothree.model.data.core.server.entity.Appearance;
026import com.echothree.util.common.message.ExecutionErrors;
027import com.echothree.util.server.control.BaseLogic;
028import com.echothree.util.server.message.ExecutionErrorAccumulator;
029import com.echothree.util.server.persistence.EntityPermission;
030import javax.enterprise.context.ApplicationScoped;
031import javax.enterprise.inject.spi.CDI;
032import javax.inject.Inject;
033
034@ApplicationScoped
035public class AppearanceLogic
036        extends BaseLogic {
037
038    @Inject
039    protected AppearanceControl appearanceControl;
040
041    @Inject
042    EntityInstanceLogic entityInstanceLogic;
043
044    protected AppearanceLogic() {
045        super();
046    }
047
048    public static AppearanceLogic getInstance() {
049        return CDI.current().select(AppearanceLogic.class).get();
050    }
051
052    public Appearance getAppearanceByName(final ExecutionErrorAccumulator eea, final String appearanceName,
053            final EntityPermission entityPermission) {
054        var appearance = appearanceControl.getAppearanceByName(appearanceName, entityPermission);
055
056        if(appearance == null) {
057            handleExecutionError(UnknownAppearanceNameException.class, eea, ExecutionErrors.UnknownAppearanceName.name(), appearanceName);
058        }
059
060        return appearance;
061    }
062
063    public Appearance getAppearanceByName(final ExecutionErrorAccumulator eea, final String appearanceName) {
064        return getAppearanceByName(eea, appearanceName, EntityPermission.READ_ONLY);
065    }
066
067    public Appearance getAppearanceByNameForUpdate(final ExecutionErrorAccumulator eea, final String appearanceName) {
068        return getAppearanceByName(eea, appearanceName, EntityPermission.READ_WRITE);
069    }
070
071    public Appearance getAppearanceByUniversalSpec(final ExecutionErrorAccumulator eea,
072            final AppearanceUniversalSpec universalSpec, final EntityPermission entityPermission) {
073        Appearance appearance = null;
074        var appearanceName = universalSpec.getAppearanceName();
075        var parameterCount = (appearanceName == null ? 0 : 1) + entityInstanceLogic.countPossibleEntitySpecs(universalSpec);
076
077        switch(parameterCount) {
078            case 1 -> {
079                if(appearanceName == null) {
080                    var entityInstance = entityInstanceLogic.getEntityInstance(eea, universalSpec,
081                            ComponentVendors.ECHO_THREE.name(), EntityTypes.Appearance.name());
082
083                    if(eea == null || !eea.hasExecutionErrors()) {
084                        appearance = appearanceControl.getAppearanceByEntityInstance(entityInstance, entityPermission);
085                    }
086                } else {
087                    appearance = getAppearanceByName(eea, appearanceName, entityPermission);
088                }
089            }
090            default ->
091                    handleExecutionError(InvalidParameterCountException.class, eea, ExecutionErrors.InvalidParameterCount.name());
092        }
093
094        return appearance;
095    }
096
097    public Appearance getAppearanceByUniversalSpec(final ExecutionErrorAccumulator eea,
098            final AppearanceUniversalSpec universalSpec) {
099        return getAppearanceByUniversalSpec(eea, universalSpec, EntityPermission.READ_ONLY);
100    }
101
102    public Appearance getAppearanceByUniversalSpecForUpdate(final ExecutionErrorAccumulator eea,
103            final AppearanceUniversalSpec universalSpec) {
104        return getAppearanceByUniversalSpec(eea, universalSpec, EntityPermission.READ_WRITE);
105    }
106    
107}