/*
 * Copyright (c) 2007, 2009, Oracle and its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/*
 * $Id: ContentTypeHandler.java 62592 2011-04-20 20:07:16Z kgrucci $
 */

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
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 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
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 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

package com.sun.ts.tests.common.webclient.handler;

import com.sun.ts.lib.util.TestUtil;
import org.apache.commons.httpclient.Header;

/** <PRE>When invoked, the content-type header
 * will be appropriately handled.  It allows
 * flexible checking of control values against
 * the response which could be in the form of:
 *    content-type; charset
 *      -or-
 *    conent-type
 * </PRE>
 */
public class ContentTypeHandler implements Handler {

    private static Handler handler = new ContentTypeHandler();

    /**
     * Creates new ContentTypeHandler
     */
    private ContentTypeHandler() {
    }

/*
 * public methods
 * ========================================================================
 */

    /**
     * Returns an instance of this handler.
     */
    public static Handler getInstance() {
        return handler;
    }

    /**
     * Invokes handler logic.
     * @param configuredHeader the user configured header
     * @param responseHeader the response header from the server
     * @return True if the passed match, otherwise false
     */
    public boolean invoke(Header configuredHeader, Header responseHeader) {
        boolean ret = false;
        TestUtil.logTrace("[ContentTypeHandler] ContentTypeHandler invoked.");
        String configVal = configuredHeader.getValue().trim();
        String responseVal = responseHeader.getValue().trim();
        int colIdx = configVal.indexOf(';');
        if (colIdx < 0) {
            // Info we're interested in : type/subtype

            // check response Content-Type header to see what format
            // it's in.
            int rColIdx = responseVal.indexOf(';');
            if (rColIdx < 0) {
                // Type and subtype, i.e. type/subtype are to be compared
                // case insensitively.
                if (configVal.equalsIgnoreCase(responseVal)) {
                    ret = true;
                }
            } else {
                if (configVal.equalsIgnoreCase(
                    responseVal.substring(0, rColIdx))) {
                    ret = true;
                }
            }
        } else {
            // Info we're interested in : type/subtype; parameter=value

            int rColIdx = responseVal.indexOf(';');
            if ( rColIdx > -1 ) {
                String confTypeSubType = configVal.substring(0, colIdx).trim();
                String responseTypeSubType = responseVal.substring(0,rColIdx).trim();
                String confParameter = configVal.substring(colIdx + 1).trim();
                String responseParameter = (responseVal.substring(rColIdx + 1).trim()).replaceAll(" ", "");
                // compare type/subtype in a case insensitive manner
                if (confTypeSubType.equalsIgnoreCase(responseTypeSubType)) {
                    // next validate the parameter in a case insensitive manner
                    if (confParameter.equalsIgnoreCase(responseParameter)) {
                        ret = true;
                    }
                }
            }
        }
        return ret;
    }
}
