package jetbrains.buildServer.buildTriggers.vcs.mercurial;

import com.intellij.openapi.diagnostic.Logger;
import jetbrains.buildServer.util.FileUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

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

/**
 * @author dmitry.neverov
 */
public final class HgFileUtil {

  private final static String TEMP_DIR_PREFIX = "hg";

  private HgFileUtil() {
  }

  /**
   * Create a temp dir with short name
   * @return created dir
   * @throws IOException in case of I/O error
   */
  public static File createTempDir() throws IOException {
    File parentDir = new File(FileUtil.getTempDirectory());
    int suffix = 0;
    File dir;
    do {
      suffix++;
      dir = new File(parentDir, TEMP_DIR_PREFIX + suffix);
    } while (dir.exists() || !dir.createNewFile());
    dir.delete();
    dir.mkdir();
    return dir;
  }


  public static void deleteDir(@Nullable File dir, @NotNull Logger logger) {
    if (dir == null)
      return;
    boolean dirDeleted = FileUtil.delete(dir);
    if (!dirDeleted)
      logger.warn("Cannot delete directory " + dir.getAbsolutePath());
  }
}