/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.domain.management.security;

import java.util.List;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.AttributeMarshaller;
import org.jboss.as.controller.ModelVersion;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.SimpleAttributeDefinition;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.SimpleResourceDefinition;
import org.jboss.as.controller.StringListAttributeDefinition;
import org.jboss.as.controller.descriptions.common.ControllerResolver;
import org.jboss.as.controller.operations.validation.StringLengthValidator;
import org.jboss.as.controller.parsing.Attribute;
import org.jboss.as.controller.registry.AttributeAccess;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.registry.OperationEntry;
import org.jboss.as.domain.management.ModelDescriptionConstants;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;

/**
 * A {@link org.jboss.as.controller.ResourceDefinition} for a single Keytab representing a single Kerberos Principal / identity.
 *
 * @author <a href="mailto:darran.lofthouse@jboss.com">Darran Lofthouse</a>
 */
public class KeytabResourceDefinition extends SimpleResourceDefinition {

    public static final SimpleAttributeDefinition PATH = new SimpleAttributeDefinitionBuilder(ModelDescriptionConstants.PATH, ModelType.STRING, true)
            .setXmlName(ModelDescriptionConstants.PATH)
            .setAllowExpression(true)
            .setValidator(new StringLengthValidator(1, Integer.MAX_VALUE, false, true))
            .setFlags(AttributeAccess.Flag.RESTART_RESOURCE_SERVICES)
            .build();

    public static final SimpleAttributeDefinition RELATIVE_TO = new SimpleAttributeDefinitionBuilder(ModelDescriptionConstants.RELATIVE_TO, ModelType.STRING, true)
            .setXmlName(ModelDescriptionConstants.RELATIVE_TO)
            .setValidator(new StringLengthValidator(1, Integer.MAX_VALUE, true, false))
            .setFlags(AttributeAccess.Flag.RESTART_RESOURCE_SERVICES)
            .build();

    public static final StringListAttributeDefinition FOR_HOSTS = new StringListAttributeDefinition.Builder(ModelDescriptionConstants.FOR_HOSTS)
            .setAllowExpression(true)
            .setAllowNull(true)
            .setValidator(new StringLengthValidator(1, Integer.MAX_VALUE, true, false))
            .setAttributeMarshaller(new AttributeMarshaller() {
                @Override
                public void marshallAsElement(AttributeDefinition attribute, ModelNode resourceModel, boolean marshallDefault,
                        XMLStreamWriter writer) throws XMLStreamException {
                    if (resourceModel.hasDefined(attribute.getName())) {
                        List<ModelNode> list = resourceModel.get(attribute.getName()).asList();
                        if (list.size() > 0) {
                            StringBuilder sb = new StringBuilder();
                            for (ModelNode child : list) {
                                if (sb.length() > 0) {
                                    sb.append(" ");
                                }
                                sb.append(child.asString());
                            }
                            writer.writeAttribute(Attribute.FOR_HOSTS.getLocalName(), sb.toString());
                        }
                    }
                }
            })
            .build();

    public static final SimpleAttributeDefinition DEBUG = new SimpleAttributeDefinitionBuilder(ModelDescriptionConstants.DEBUG, ModelType.BOOLEAN, true)
            .setDefaultValue(new ModelNode(false))
            .setAllowExpression(true)
            .setFlags(AttributeAccess.Flag.RESTART_RESOURCE_SERVICES)
            .build();

    private static AttributeDefinition[] ATTRIBUTES = new AttributeDefinition[] { PATH, RELATIVE_TO, FOR_HOSTS, DEBUG };

    KeytabResourceDefinition() {
        super(PathElement.pathElement(ModelDescriptionConstants.KEYTAB),
                ControllerResolver.getDeprecatedResolver(SecurityRealmResourceDefinition.DEPRECATED_PARENT_CATEGORY,
                        "core.management.security-realm.server-identity.kerberos.keytab"),
                new SecurityRealmChildAddHandler(false, false, ATTRIBUTES),
                new SecurityRealmChildRemoveHandler(true),
                OperationEntry.Flag.RESTART_RESOURCE_SERVICES,
                OperationEntry.Flag.RESTART_RESOURCE_SERVICES);
        setDeprecated(ModelVersion.create(1, 7));
    }

    @Override
    public void registerAttributes(ManagementResourceRegistration resourceRegistration) {
        SecurityRealmChildWriteAttributeHandler handler = new SecurityRealmChildWriteAttributeHandler(ATTRIBUTES);
        handler.registerAttributes(resourceRegistration);
    }

    @Override
    public void registerOperations(ManagementResourceRegistration resourceRegistration) {
        super.registerOperations(resourceRegistration);
        resourceRegistration.registerOperationHandler(KeytabTestHandler.DEFINITION, new KeytabTestHandler());
    }

}
