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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package org.glassfish.tyrus.core;

import org.glassfish.tyrus.spi.UpgradeRequest;

/**
 * TODO
 */
public enum Version {

    DRAFT17("13") {
        @Override
        public ProtocolHandler createHandler(boolean mask) {
            return new ProtocolHandler(mask);
        }

        @Override
        public boolean validate(UpgradeRequest request) {
            return this.wireProtocolVersion.equals(request.getHeader(UpgradeRequest.SEC_WEBSOCKET_VERSION));
        }
    };

    public abstract ProtocolHandler createHandler(boolean mask);

    public abstract boolean validate(UpgradeRequest request);

    final String wireProtocolVersion;

    private Version(final String wireProtocolVersion) {
        this.wireProtocolVersion = wireProtocolVersion;
    }

    @Override
    public String toString() {
        return name();
    }

    public static String getSupportedWireProtocolVersions() {
        final StringBuilder sb = new StringBuilder();
        for (Version v : Version.values()) {
            if (v.wireProtocolVersion.length() > 0) {
                sb.append(v.wireProtocolVersion).append(", ");
            }
        }
        return sb.substring(0, sb.length() - 2);
    }
}