/*
 * Copyright 2000-2018 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package jetbrains.buildServer.buildTriggers.vcs.mercurial;

import jetbrains.buildServer.buildTriggers.vcs.mercurial.command.HgVcsRoot;
import jetbrains.buildServer.util.TestFor;
import jetbrains.buildServer.vcs.RepositoryStateData;
import jetbrains.buildServer.vcs.impl.VcsRootImpl;
import org.jetbrains.annotations.NotNull;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import java.io.File;
import java.util.Collection;

import static jetbrains.buildServer.buildTriggers.vcs.mercurial.MercurialSupportBuilder.mercurialSupport;
import static jetbrains.buildServer.buildTriggers.vcs.mercurial.ServerPluginConfigBuilder.serverPluginConfig;
import static jetbrains.buildServer.buildTriggers.vcs.mercurial.VcsRootBuilder.vcsRoot;
import static jetbrains.buildServer.util.Util.map;
import static junit.framework.Assert.assertTrue;


@RequiredHgVersion(min = "1.7.0")
@Test(dataProviderClass = HgVersionConstraint.class, dataProvider = "installedHgVersion")
public class CollectChangesContextTest extends BaseMercurialTestCase {

  private ServerPluginConfig myConfig;
  private MercurialVcsSupport myVcs;
  private MercurialSupportBuilder myVcsBuilder;

  @BeforeMethod
  public void setUp() throws Exception {
    super.setUp();
    myConfig = serverPluginConfig()
            .cachesDir(myTempFiles.createTempDir())
            .hgPath(Util.getHgPath())
            .build();
    myVcsBuilder = mercurialSupport().withConfig(myConfig);
    myVcs = myVcsBuilder.build();
  }


  @TestFor(issues = "TW-46340")
  public void test_many_from_revisions(@NotNull HgVersion _) throws Exception {
    //default
    // | branch1
    // V  |
    //    V
    //   100
    //  /|
    //99 |
    // | |
    //..... total 100 merges from default into branch1 like this
    // | 5
    // |/|
    // 4 |
    // | 3
    // |/|
    // 2 |
    // |/
    // 1
    // |
    // 0
    //
    // we collect changes from {default:99} to {default:99, branch1: 100}
    // when we compute from revisions for branch1 99 is enough (it will filter out all commits in the default branch)
    File remoteRepository = myTempFiles.createTempDir();
    Util.copyRepository(new File("mercurial-tests/testData/manyFromRevisions"), remoteRepository);
    VcsRootImpl root = vcsRoot().withUrl(remoteRepository.getAbsolutePath()).build();
    HgVcsRoot hgRoot = myVcsBuilder.getHgRootFactory().createHgRoot(root);

    RepositoryStateData fromState = RepositoryStateData.createVersionState("default", map("default", "d847416dd2eb"));
    RepositoryStateData toState = RepositoryStateData.createVersionState("default", map("default", "d847416dd2eb", "branch1", "8c990164b769"));
    CollectChangesContext context = new CollectChangesContext(myConfig, myVcs, myVcsBuilder.getHgRepoFactory(), MercurialProgress.NO_OP, fromState);
    Collection<String> fromRevisions = context.getFromRevisionsForBranch(hgRoot, "d847416dd2eb", "8c990164b769", toState);
    assertTrue(fromRevisions.size() == 1);
    assertTrue(fromRevisions.contains("d847416dd2eb"));
  }

}