/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2010, 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.naming.subsystem;

import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.SUBSYSTEM;
import static org.jboss.as.naming.subsystem.NamingSubsystemModel.BINDING_TYPE;
import static org.jboss.as.naming.subsystem.NamingSubsystemModel.CACHE;
import static org.jboss.as.naming.subsystem.NamingSubsystemModel.ENVIRONMENT;

import org.jboss.as.controller.Extension;
import org.jboss.as.controller.ExtensionContext;
import org.jboss.as.controller.ModelVersion;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.ProcessType;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.access.constraint.ApplicationTypeConfig;
import org.jboss.as.controller.access.constraint.SensitivityClassification;
import org.jboss.as.controller.access.management.ApplicationTypeAccessConstraintDefinition;
import org.jboss.as.controller.access.management.SensitiveTargetAccessConstraintDefinition;
import org.jboss.as.controller.descriptions.ResourceDescriptionResolver;
import org.jboss.as.controller.descriptions.StandardResourceDescriptionResolver;
import org.jboss.as.controller.operations.common.GenericSubsystemDescribeHandler;
import org.jboss.as.controller.parsing.ExtensionParsingContext;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.controller.transform.description.DiscardAttributeChecker;
import org.jboss.as.controller.transform.description.RejectAttributeChecker;
import org.jboss.as.controller.transform.description.ResourceTransformationDescriptionBuilder;
import org.jboss.as.controller.transform.description.TransformationDescription;
import org.jboss.as.controller.transform.description.TransformationDescriptionBuilder;
import org.jboss.as.naming.management.JndiViewOperation;

/**
 * Domain extension used to initialize the naming subsystem element handlers.
 *
 * @author John E. Bailey
 * @author Emanuel Muckenhuber
 */
public class NamingExtension implements Extension {

    public static final String SUBSYSTEM_NAME = "naming";
    private static final String NAMESPACE_1_0 = "urn:jboss:domain:naming:1.0";
    private static final String NAMESPACE_1_1 = "urn:jboss:domain:naming:1.1";
    private static final String NAMESPACE_1_2 = "urn:jboss:domain:naming:1.2";
    private static final String NAMESPACE_1_3 = "urn:jboss:domain:naming:1.3";
    private static final String NAMESPACE_1_4 = "urn:jboss:domain:naming:1.4";
    static final String NAMESPACE_2_0 = "urn:jboss:domain:naming:2.0";

    static final int MANAGEMENT_API_MAJOR_VERSION = 2;
    static final int MANAGEMENT_API_MINOR_VERSION = 0;
    static final int MANAGEMENT_API_MICRO_VERSION = 0;

    static final String RESOURCE_NAME = NamingExtension.class.getPackage().getName() + ".LocalDescriptions";
    static final PathElement SUBSYSTEM_PATH = PathElement.pathElement(SUBSYSTEM, NamingExtension.SUBSYSTEM_NAME);

    public static final ModelVersion VERSION_1_1_0 = ModelVersion.create(1, 1, 0);
    public static final ModelVersion VERSION_1_2_0 = ModelVersion.create(1, 2, 0);
    public static final ModelVersion VERSION_1_3_0 = ModelVersion.create(1, 3, 0);

    static final SensitiveTargetAccessConstraintDefinition JNDI_VIEW_CONSTRAINT = new SensitiveTargetAccessConstraintDefinition(
            new SensitivityClassification(SUBSYSTEM_NAME, "jndi-view", false, true, true));

    static final SensitiveTargetAccessConstraintDefinition NAMING_BINDING_SENSITIVITY_CONSTRAINT = new SensitiveTargetAccessConstraintDefinition(
            new SensitivityClassification(SUBSYSTEM_NAME, "naming-binding", false, false, false));

    static final ApplicationTypeAccessConstraintDefinition NAMING_BINDING_APPLICATION_CONSTRAINT = new ApplicationTypeAccessConstraintDefinition(
            new ApplicationTypeConfig(NamingExtension.SUBSYSTEM_NAME, NamingSubsystemModel.BINDING));


    public static ResourceDescriptionResolver getResourceDescriptionResolver(final String keyPrefix) {
        return new StandardResourceDescriptionResolver(keyPrefix, RESOURCE_NAME, NamingExtension.class.getClassLoader(), true, true);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void initialize(ExtensionContext context) {
        final SubsystemRegistration subsystem = context.registerSubsystem(SUBSYSTEM_NAME, MANAGEMENT_API_MAJOR_VERSION,
                MANAGEMENT_API_MINOR_VERSION, MANAGEMENT_API_MICRO_VERSION);

        final ManagementResourceRegistration registration = subsystem.registerSubsystemModel(NamingSubsystemRootResourceDefinition.INSTANCE);

        registration.registerOperationHandler(GenericSubsystemDescribeHandler.DEFINITION, GenericSubsystemDescribeHandler.INSTANCE);

        registration.registerSubModel(NamingBindingResourceDefinition.INSTANCE);
        registration.registerSubModel(RemoteNamingResourceDefinition.INSTANCE);

        if (context.isRuntimeOnlyRegistrationValid()) {
            registration.registerOperationHandler(NamingSubsystemRootResourceDefinition.JNDI_VIEW, JndiViewOperation.INSTANCE, false);
        }

        subsystem.registerXMLElementWriter(NamingSubsystemXMLPersister.INSTANCE);

        if (context.isRegisterTransformers()) {
            //Note that the 'cache' attribute introduced post 1.2.0 to binding=* is only usable if binding-type=external-context which is not allowed in <=1.2.0

            // register 1.1.0 transformer
            ResourceTransformationDescriptionBuilder builder = TransformationDescriptionBuilder.Factory.createSubsystemInstance();
            builder.addChildResource(NamingSubsystemModel.BINDING_PATH)
                    .getAttributeBuilder()
                        .addRejectCheck(RejectAttributeChecker.DEFINED, ENVIRONMENT)
                        .setDiscard(DiscardAttributeChecker.UNDEFINED, ENVIRONMENT, CACHE)
                        //Since we need to check the binding-type, we cannot have expressions
                        .addRejectCheck(RejectAttributeChecker.SIMPLE_EXPRESSIONS, BINDING_TYPE)
                        .addRejectCheck(new BindingType11RejectChecker(), BINDING_TYPE)
                        .addRejectCheck(new BindingType12RejectChecker(), BINDING_TYPE)
                        .end();
            TransformationDescription.Tools.register(builder.build(), subsystem, VERSION_1_1_0);

            // register 1.2.0 and 1.3.0 transformer
            builder = TransformationDescriptionBuilder.Factory.createSubsystemInstance();
            builder.addChildResource(NamingSubsystemModel.BINDING_PATH)
                    .getAttributeBuilder()
                        .setDiscard(DiscardAttributeChecker.UNDEFINED, CACHE)
                        //Since we need to check the binding-type, we cannot have expressions
                        .addRejectCheck(RejectAttributeChecker.SIMPLE_EXPRESSIONS, BINDING_TYPE)
                        .addRejectCheck(new BindingType12RejectChecker(), BINDING_TYPE)
                        .end();
            TransformationDescription.Tools.register(builder.build(), subsystem, VERSION_1_2_0);
            TransformationDescription.Tools.register(builder.build(), subsystem, VERSION_1_3_0);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void initializeParsers(ExtensionParsingContext context) {
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_1_0, new NamingSubsystem10Parser(context.getProcessType() == ProcessType.APPLICATION_CLIENT));
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_1_1, NamingSubsystem11Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_1_2, NamingSubsystem12Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_1_3, NamingSubsystem13Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_1_4, NamingSubsystem14Parser.INSTANCE);
        context.setSubsystemXmlMapping(SUBSYSTEM_NAME, NAMESPACE_2_0, NamingSubsystem20Parser.INSTANCE);
    }


}
