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/*
 * Licensed to the University Corporation for Advanced Internet Development,
 * Inc. (UCAID) under one or more contributor license agreements.  See the
 * NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The UCAID licenses this file to You under the Apache
 * License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * 
 */

package org.opensaml.saml.saml2.core.impl;

import java.time.Instant;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.xml.namespace.QName;

import org.opensaml.core.xml.AbstractXMLObject;
import org.opensaml.core.xml.XMLObject;
import org.opensaml.core.xml.util.IndexedXMLObjectChildrenList;
import org.opensaml.saml.common.xml.SAMLConstants;
import org.opensaml.saml.saml2.core.AudienceRestriction;
import org.opensaml.saml.saml2.core.Condition;
import org.opensaml.saml.saml2.core.Conditions;
import org.opensaml.saml.saml2.core.OneTimeUse;
import org.opensaml.saml.saml2.core.ProxyRestriction;

/**
 * Concrete implementation of {@link org.opensaml.saml.saml2.core.Conditions}.
 */
public class ConditionsImpl extends AbstractXMLObject implements Conditions {

    /** A Condition. */
    private final IndexedXMLObjectChildrenList conditions;

    /** Not Before conditions. */
    private Instant notBefore;

    /** Not On Or After conditions. */
    private Instant notOnOrAfter;

    /**
     * Constructor.
     * 
     * @param namespaceURI the namespace the element is in
     * @param elementLocalName the local name of the XML element this Object represents
     * @param namespacePrefix the prefix for the given namespace
     */
    protected ConditionsImpl(final String namespaceURI, final String elementLocalName, final String namespacePrefix) {
        super(namespaceURI, elementLocalName, namespacePrefix);
        conditions = new IndexedXMLObjectChildrenList<>(this);
    }

    /** {@inheritDoc} */
    public List getConditions() {
        return conditions;
    }

    /** {@inheritDoc} */
    public List getConditions(QName typeOrName) {
        return (List) conditions.subList(typeOrName);
    }
    
    /** {@inheritDoc} */
    public List getAudienceRestrictions() {
        final QName conditionQName = new QName(SAMLConstants.SAML20_NS, AudienceRestriction.DEFAULT_ELEMENT_LOCAL_NAME,
                SAMLConstants.SAML20_PREFIX);
        return (List) conditions.subList(conditionQName);
    }

    /** {@inheritDoc} */
    public OneTimeUse getOneTimeUse() {
        final QName conditionQName = new QName(SAMLConstants.SAML20_NS, OneTimeUse.DEFAULT_ELEMENT_LOCAL_NAME,
                SAMLConstants.SAML20_PREFIX);
        final List list = (List) conditions.subList(conditionQName);
        if (list == null || list.size() == 0) {
            return null;
        } else {
            return list.get(0);
        }
    }

    /** {@inheritDoc} */
    public ProxyRestriction getProxyRestriction() {
        final QName conditionQName = new QName(SAMLConstants.SAML20_NS, ProxyRestriction.DEFAULT_ELEMENT_LOCAL_NAME,
                SAMLConstants.SAML20_PREFIX);
        final List list = (List) conditions.subList(conditionQName);
        if (list == null || list.size() == 0) {
            return null;
        } else {
            return list.get(0);
        }
    }

    /** {@inheritDoc} */
    public Instant getNotBefore() {
        return notBefore;
    }

    /** {@inheritDoc} */
    public void setNotBefore(final Instant newNotBefore) {
        this.notBefore = prepareForAssignment(this.notBefore, newNotBefore);
    }

    /** {@inheritDoc} */
    public Instant getNotOnOrAfter() {
        return notOnOrAfter;
    }

    /** {@inheritDoc} */
    public void setNotOnOrAfter(final Instant newNotOnOrAfter) {
        this.notOnOrAfter = prepareForAssignment(this.notOnOrAfter, newNotOnOrAfter);
    }

    /** {@inheritDoc} */
    public List getOrderedChildren() {
        final ArrayList children = new ArrayList<>();

        children.addAll(conditions);

        return Collections.unmodifiableList(children);
    }

}