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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.jboss.as.clustering.jgroups.subsystem;

import java.util.EnumSet;
import java.util.function.UnaryOperator;

import org.jboss.as.clustering.controller.CapabilityReference;
import org.jboss.as.clustering.controller.CommonUnaryRequirement;
import org.jboss.as.clustering.controller.ResourceDescriptor;
import org.jboss.as.clustering.jgroups.auth.CipherAuthToken;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.registry.AttributeAccess;
import org.jboss.as.controller.security.CredentialReference;
import org.jboss.as.controller.security.CredentialReferenceWriteAttributeHandler;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;

/**
 * @author Paul Ferraro
 */
public class CipherAuthTokenResourceDefinition extends AuthTokenResourceDefinition {

    static final PathElement PATH = pathElement("cipher");

    enum Attribute implements org.jboss.as.clustering.controller.Attribute, UnaryOperator {
        KEY_CREDENTIAL(CredentialReference.getAttributeBuilder("key-credential-reference", null, false, new CapabilityReference(Capability.AUTH_TOKEN, CommonUnaryRequirement.CREDENTIAL_STORE)).build()),
        KEY_ALIAS("key-alias", ModelType.STRING) {
            @Override
            public SimpleAttributeDefinitionBuilder apply(SimpleAttributeDefinitionBuilder builder) {
                return builder.setAllowExpression(true);
            }
        },
        KEY_STORE("key-store", ModelType.STRING) {
            @Override
            public SimpleAttributeDefinitionBuilder apply(SimpleAttributeDefinitionBuilder builder) {
                return builder.setCapabilityReference(new CapabilityReference(Capability.AUTH_TOKEN, CommonUnaryRequirement.KEY_STORE));
            }
        },
        ALGORITHM("algorithm", ModelType.STRING) {
            @Override
            public SimpleAttributeDefinitionBuilder apply(SimpleAttributeDefinitionBuilder builder) {
                return builder.setAllowExpression(true)
                        .setRequired(false)
                        .setDefaultValue(new ModelNode("RSA"))
                        ;
            }
        },
        ;
        private final AttributeDefinition definition;

        Attribute(String name, ModelType type) {
            this.definition = this.apply(new SimpleAttributeDefinitionBuilder(name, type)
                    .setRequired(true)
                    .setFlags(AttributeAccess.Flag.RESTART_RESOURCE_SERVICES)
                    ).build();
        }

        Attribute(AttributeDefinition definition) {
            this.definition = definition;
        }

        @Override
        public AttributeDefinition getDefinition() {
            return this.definition;
        }

        @Override
        public SimpleAttributeDefinitionBuilder apply(SimpleAttributeDefinitionBuilder builder) {
            return builder;
        }
    }

    static class ResourceDescriptorTransformer implements UnaryOperator {
        @Override
        public ResourceDescriptor apply(ResourceDescriptor descriptor) {
            return descriptor.addAttributes(EnumSet.complementOf(EnumSet.of(Attribute.KEY_CREDENTIAL)))
                    .addAttribute(Attribute.KEY_CREDENTIAL, new CredentialReferenceWriteAttributeHandler(Attribute.KEY_CREDENTIAL.getDefinition()));
        }
    }

    CipherAuthTokenResourceDefinition() {
        super(PATH, new ResourceDescriptorTransformer(), CipherAuthTokenServiceConfigurator::new);
    }
}