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/*
 * Copyright (c) 2009-2010 David Grant
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.jscep.content;

import org.jscep.response.Capabilities;
import org.jscep.response.Capability;
import org.jscep.util.LoggingUtil;
import org.slf4j.Logger;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;


/**
 * This class handles responses to GetCACaps requests.
 * 
 * @author David Grant
 */
public class CaCapabilitiesContentHandler implements ScepContentHandler {
	private static Logger LOGGER = LoggingUtil.getLogger(CaCapabilitiesContentHandler.class);

	/**
	 * {@inheritDoc}
	 */
	public Capabilities getContent(InputStream in, String mimeType) throws IOException {
		if (mimeType == null || !mimeType.startsWith("text/plain")) {
			LOGGER.warn("Content-Type mismatch: was '{}', expected 'text/plain'", mimeType);
		}

		final Capabilities caps = new Capabilities();

		if (LOGGER.isDebugEnabled()) {
			LOGGER.debug("CA capabilities:");
		}
		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        Set caCaps = new HashSet();
		String capability;
		while ((capability = reader.readLine()) != null) {
            caCaps.add(capability);
        }
        reader.close();

        for (Capability enumValue : Capability.values()) {
            if (caCaps.contains(enumValue.toString())) {
                LOGGER.debug("[\u2713] {}", enumValue.getDescription());
                caps.add(enumValue);
            } else {
                LOGGER.debug("[\u2717] {}", enumValue.getDescription());
            }
        }

		return caps;
	}
}