/*
 * Copyright (C) 2014, Matthias Sohn <matthias.sohn@sap.com>
 * 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.test;

import static org.junit.Assert.assertEquals;

import java.util.Collection;
import java.util.Collections;

import javax.servlet.http.HttpServletRequest;

import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.http.server.GitServlet;
import org.eclipse.jgit.http.server.resolver.DefaultReceivePackFactory;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.junit.http.HttpTestCase;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.revwalk.RevBlob;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.transport.PostReceiveHook;
import org.eclipse.jgit.transport.PushResult;
import org.eclipse.jgit.transport.ReceiveCommand;
import org.eclipse.jgit.transport.ReceivePack;
import org.eclipse.jgit.transport.RemoteRefUpdate;
import org.eclipse.jgit.transport.Transport;
import org.eclipse.jgit.transport.URIish;
import org.eclipse.jgit.transport.resolver.RepositoryResolver;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
import org.junit.Before;
import org.junit.Test;

public class MeasurePackSizeTest extends HttpTestCase {
	private Repository remoteRepository;

	private URIish remoteURI;

	long packSize = -1;

	@Override
	@Before
	public void setUp() throws Exception {
		super.setUp();

		final TestRepository<Repository> src = createTestRepository();
		final String srcName = src.getRepository().getDirectory().getName();

		ServletContextHandler app = server.addContext("/git");
		GitServlet gs = new GitServlet();
		gs.setRepositoryResolver(new RepositoryResolver<HttpServletRequest>() {
			@Override
			public Repository open(HttpServletRequest req, String name)
					throws RepositoryNotFoundException,
					ServiceNotEnabledException {
				if (!name.equals(srcName))
					throw new RepositoryNotFoundException(name);

				final Repository db = src.getRepository();
				db.incrementOpen();
				return db;
			}
		});
		gs.setReceivePackFactory(new DefaultReceivePackFactory() {
			@Override
			public ReceivePack create(HttpServletRequest req, Repository db)
					throws ServiceNotEnabledException,
					ServiceNotAuthorizedException {
				ReceivePack recv = super.create(req, db);
				recv.setPostReceiveHook(new PostReceiveHook() {

					@Override
					public void onPostReceive(ReceivePack rp,
							Collection<ReceiveCommand> commands) {
						packSize = rp.getPackSize();
					}
				});
				return recv;
			}

		});
		app.addServlet(new ServletHolder(gs), "/*");

		server.setUp();

		remoteRepository = src.getRepository();
		remoteURI = toURIish(app, srcName);

		StoredConfig cfg = remoteRepository.getConfig();
		cfg.setBoolean("http", null, "receivepack", true);
		cfg.save();
	}

	@Test
	public void testPush_packSize() throws Exception {
		final TestRepository src = createTestRepository();
		final RevBlob Q_txt = src
				.blob("some blob content to measure pack size");
		final RevCommit Q = src.commit().add("Q", Q_txt).create();
		final Repository db = src.getRepository();
		final String dstName = Constants.R_HEADS + "new.branch";
		Transport t;
		PushResult result;

		t = Transport.open(db, remoteURI);
		try {
			final String srcExpr = Q.name();
			final boolean forceUpdate = false;
			final String localName = null;
			final ObjectId oldId = null;

			RemoteRefUpdate update = new RemoteRefUpdate(src.getRepository(),
					srcExpr, dstName, forceUpdate, localName, oldId);
			result = t.push(NullProgressMonitor.INSTANCE,
					Collections.singleton(update));
		} finally {
			t.close();
		}
		assertEquals("expected 1 RemoteUpdate", 1, result.getRemoteUpdates()
				.size());
		assertEquals("unexpected pack size", 1398, packSize);
	}

}