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.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    protected AppearanceLogic() {
042        super();
043    }
044
045    public static AppearanceLogic getInstance() {
046        return CDI.current().select(AppearanceLogic.class).get();
047    }
048
049    public Appearance getAppearanceByName(final ExecutionErrorAccumulator eea, final String appearanceName,
050            final EntityPermission entityPermission) {
051        var appearance = appearanceControl.getAppearanceByName(appearanceName, entityPermission);
052
053        if(appearance == null) {
054            handleExecutionError(UnknownAppearanceNameException.class, eea, ExecutionErrors.UnknownAppearanceName.name(), appearanceName);
055        }
056
057        return appearance;
058    }
059
060    public Appearance getAppearanceByName(final ExecutionErrorAccumulator eea, final String appearanceName) {
061        return getAppearanceByName(eea, appearanceName, EntityPermission.READ_ONLY);
062    }
063
064    public Appearance getAppearanceByNameForUpdate(final ExecutionErrorAccumulator eea, final String appearanceName) {
065        return getAppearanceByName(eea, appearanceName, EntityPermission.READ_WRITE);
066    }
067
068    public Appearance getAppearanceByUniversalSpec(final ExecutionErrorAccumulator eea,
069            final AppearanceUniversalSpec universalSpec, final EntityPermission entityPermission) {
070        Appearance appearance = null;
071        var appearanceName = universalSpec.getAppearanceName();
072        var parameterCount = (appearanceName == null ? 0 : 1) + EntityInstanceLogic.getInstance().countPossibleEntitySpecs(universalSpec);
073
074        switch(parameterCount) {
075            case 1 -> {
076                if(appearanceName == null) {
077                    var entityInstance = EntityInstanceLogic.getInstance().getEntityInstance(eea, universalSpec,
078                            ComponentVendors.ECHO_THREE.name(), EntityTypes.Appearance.name());
079
080                    if(!eea.hasExecutionErrors()) {
081                        appearance = appearanceControl.getAppearanceByEntityInstance(entityInstance, entityPermission);
082                    }
083                } else {
084                    appearance = getAppearanceByName(eea, appearanceName, entityPermission);
085                }
086            }
087            default ->
088                    handleExecutionError(InvalidParameterCountException.class, eea, ExecutionErrors.InvalidParameterCount.name());
089        }
090
091        return appearance;
092    }
093
094    public Appearance getAppearanceByUniversalSpec(final ExecutionErrorAccumulator eea,
095            final AppearanceUniversalSpec universalSpec) {
096        return getAppearanceByUniversalSpec(eea, universalSpec, EntityPermission.READ_ONLY);
097    }
098
099    public Appearance getAppearanceByUniversalSpecForUpdate(final ExecutionErrorAccumulator eea,
100            final AppearanceUniversalSpec universalSpec) {
101        return getAppearanceByUniversalSpec(eea, universalSpec, EntityPermission.READ_WRITE);
102    }
103    
104}