/*
 * Copyright (C) 2015, 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
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package org.eclipse.jgit.transport;

import static org.eclipse.jgit.transport.RemoteRefUpdate.Status.REJECTED_OTHER_REASON;
import static org.junit.Assert.assertEquals;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.eclipse.jgit.internal.storage.dfs.DfsRepositoryDescription;
import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.resolver.ReceivePackFactory;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class PushConnectionTest {
	private URIish uri;
	private TestProtocol<Object> testProtocol;
	private Object ctx = new Object();
	private InMemoryRepository server;
	private InMemoryRepository client;
	private ObjectId obj1;
	private ObjectId obj2;
	private ObjectId obj3;
	private String refName = "refs/tags/blob";

	@Before
	public void setUp() throws Exception {
		server = newRepo("server");
		client = newRepo("client");
		testProtocol = new TestProtocol<>(
				null,
				new ReceivePackFactory<Object>() {
					@Override
					public ReceivePack create(Object req, Repository db)
							throws ServiceNotEnabledException,
							ServiceNotAuthorizedException {
						return new ReceivePack(db);
					}
				});
		uri = testProtocol.register(ctx, server);

		try (ObjectInserter ins = server.newObjectInserter()) {
			obj1 = ins.insert(Constants.OBJ_BLOB, Constants.encode("test"));
			obj3 = ins.insert(Constants.OBJ_BLOB, Constants.encode("not"));
			ins.flush();

			RefUpdate u = server.updateRef(refName);
			u.setNewObjectId(obj1);
			assertEquals(RefUpdate.Result.NEW, u.update());
		}

		try (ObjectInserter ins = client.newObjectInserter()) {
			obj2 = ins.insert(Constants.OBJ_BLOB, Constants.encode("file"));
			ins.flush();
		}
	}

	@After
	public void tearDown() {
		Transport.unregister(testProtocol);
	}

	private static InMemoryRepository newRepo(String name) {
		return new InMemoryRepository(new DfsRepositoryDescription(name));
	}

	@Test
	public void testWrongOldIdDoesNotReplace() throws IOException {
		RemoteRefUpdate rru = new RemoteRefUpdate(null, null, obj2, refName,
				false, null, obj3);

		Map<String, RemoteRefUpdate> updates = new HashMap<>();
		updates.put(rru.getRemoteName(), rru);

		Transport tn = testProtocol.open(uri, client, "server");
		try {
			PushConnection connection = tn.openPush();
			try {
				connection.push(NullProgressMonitor.INSTANCE, updates);
			} finally {
				connection.close();
			}
		} finally {
			tn.close();
		}

		assertEquals(REJECTED_OTHER_REASON, rru.getStatus());
		assertEquals("invalid old id sent", rru.getMessage());
	}
}