/*
 * Copyright (C) 2009-2010, Google Inc.
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.eclipse.jgit.http.server.resolver;

import java.util.Arrays;

import javax.servlet.http.HttpServletRequest;

import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.UploadPack;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
import org.eclipse.jgit.transport.resolver.UploadPackFactory;

/**
 * Create and configure {@link org.eclipse.jgit.transport.UploadPack} service
 * instance.
 * <p>
 * Reading by upload-pack is permitted unless {@code http.uploadpack} is
 * explicitly set to false.
 */
public class DefaultUploadPackFactory implements
		UploadPackFactory<HttpServletRequest> {
	private static class ServiceConfig {
		final boolean enabled;

		ServiceConfig(Config cfg) {
			enabled = cfg.getBoolean("http", "uploadpack", true);
		}
	}

	/** {@inheritDoc} */
	@Override
	public UploadPack create(HttpServletRequest req, Repository db)
			throws ServiceNotEnabledException, ServiceNotAuthorizedException {
		if (db.getConfig().get(ServiceConfig::new).enabled) {
			UploadPack up = new UploadPack(db);
			String header = req.getHeader("Git-Protocol"); //$NON-NLS-1$
			if (header != null) {
				String[] params = header.split(":"); //$NON-NLS-1$
				up.setExtraParameters(Arrays.asList(params));
			}
			return up;
		}
		throw new ServiceNotEnabledException();
	}
}