/*
 * Copyright 2000-2014 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.command;

import jetbrains.buildServer.vcs.VcsException;
import org.jetbrains.annotations.NotNull;

import java.io.File;
import java.io.IOException;

public class CloneCommand extends AuthCommand {
  private String myToId;
  private boolean myUpdateWorkingDir = true;
  private String myRepository;
  private File myWorkingDir;
  private boolean myUsePullProtocol = true;
  private boolean myUseUncompressedTransfer = false;
  private boolean myTraceback;

  public CloneCommand(@NotNull CommandSettings commandSettings,
                      @NotNull String hgPath,
                      @NotNull File workingDir,
                      @NotNull AuthSettings authSettings) {
    super(commandSettings, hgPath, workingDir, authSettings);
    myWorkingDir = workingDir;
  }

  public CloneCommand fromRepository(@NotNull String repositoryUrl) {
    myRepository = repositoryUrl;
    return this;
  }

  public CloneCommand fromRepository(@NotNull File localRepository) throws IOException {
    return fromRepository(localRepository.getCanonicalPath());
  }

  public CloneCommand toRevision(@NotNull String revision) {
    return toRevision(new ChangeSet(revision));
  }

  public CloneCommand toRevision(@NotNull ChangeSet cset) {
    myToId = cset.getId();
    return this;
  }

  public CloneCommand setUpdateWorkingDir(boolean doUpdateWorkingDir) {
    myUpdateWorkingDir = doUpdateWorkingDir;
    return this;
  }

  public CloneCommand useUncompressedTransfer(boolean doUseUncompressedTransfer) {
    myUseUncompressedTransfer = doUseUncompressedTransfer;
    return this;
  }

  public CloneCommand setUsePullProtocol(boolean usePullProtocol) {
    myUsePullProtocol = usePullProtocol;
    return this;
  }

  public CloneCommand withTraceback(boolean runWithTraceback) {
    myTraceback = runWithTraceback;
    return this;
  }

  public void call() throws VcsException {
    myWorkingDir.mkdirs();
    MercurialCommandLine cli = createCommandLine();
    File parent = myWorkingDir.getParentFile();
    cli.setWorkDirectory(parent.getAbsolutePath());
    cli.addParameter("clone");
    if (myTraceback)
      cli.addParameter("--traceback");
    if (myToId != null) {
      cli.addParameter("-r");
      cli.addParameter(myToId);
    }
    if (myUsePullProtocol)
      cli.addParameter("--pull");
    if (!myUpdateWorkingDir) {
      cli.addParameter("-U");
    }
    if (myUseUncompressedTransfer) {
      cli.addParameter("--uncompressed");
    }
    String repositoryUrl = myAuthSettings.getRepositoryUrlWithCredentials(myRepository);
    cli.addParameter(repositoryUrl);
    cli.addParameter(myWorkingDir.getName());

    runCommand(cli, myCommandSettings.setTimeout(24 * 3600)); // some repositories are quite large, we set timeout to 24 hours
  }
}