/*
 * 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 org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.ArrayList;
import java.util.List;

import static java.util.Arrays.asList;

/**
 * A change in subrepo configuration
 */
public class HgSubrepoConfigChange {

  private final String myMainRepoRevision;
  private final String myPath;
  private final SubRepo myCurrent;
  private final List<SubRepo> myPrevious;

  public HgSubrepoConfigChange(@NotNull String mainRepoRevision,
                               @NotNull String path,
                               @Nullable SubRepo previous,
                               @Nullable SubRepo current) {
    this(mainRepoRevision, path, previous != null ? asList(previous) : new ArrayList<SubRepo>(), current);
  }

  public HgSubrepoConfigChange(@NotNull String mainRepoRevision,
                               @NotNull String path,
                               @NotNull List<SubRepo> previous,
                               @Nullable SubRepo current) {
    myMainRepoRevision = mainRepoRevision;
    myPath = path;
    myPrevious = previous;
    myCurrent = current;
  }

  @NotNull
  public String getMainRepoRevision() {
    return myMainRepoRevision;
  }

  @NotNull
  public String getPath() {
    return myPath;
  }

  @NotNull
  public List<SubRepo> getPrevious() {
    return myPrevious;
  }

  public SubRepo getCurrent() {
    return myCurrent;
  }

  public boolean subrepoRemoved() {
    return myCurrent == null && !myPrevious.isEmpty();
  }

  public boolean subrepoAdded() {
    return myCurrent != null && myPrevious.isEmpty();
  }

  public boolean subrepoUrlChanged() {
    if (myCurrent == null)
      return false;
    if (myPrevious.isEmpty())
      return false;
    for (SubRepo sr : myPrevious) {
      if (!myCurrent.url().equals(sr.url()))
        return true;
    }
    return false;
  }
}