// Copyright (C) 2014 The Android Open Source Project
//
// 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 com.google.gerrit.testutil;

import static org.easymock.EasyMock.expect;

import com.google.common.collect.Ordering;
import com.google.gerrit.reviewdb.client.Branch;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gerrit.reviewdb.client.PatchSetInfo;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.config.FactoryModule;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.notedb.ChangeNotes;
import com.google.gerrit.server.notedb.ChangeUpdate;
import com.google.gerrit.server.project.ChangeControl;
import com.google.gerrit.server.util.TimeUtil;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Injector;

import org.easymock.EasyMock;

/**
 * Utility functions to create and manipulate Change, ChangeUpdate, and
 * ChangeControl objects for testing.
 */
public class TestChanges {
  public static Change newChange(Project.NameKey project, IdentifiedUser user) {
    Change.Id changeId = new Change.Id(1);
    Change c = new Change(
        new Change.Key("Iabcd1234abcd1234abcd1234abcd1234abcd1234"),
        changeId,
        user.getAccount().getId(),
        new Branch.NameKey(project, "master"),
        TimeUtil.nowTs());
    incrementPatchSet(c);
    return c;
  }

  public static ChangeUpdate newUpdate(Injector injector,
      GitRepositoryManager repoManager, Change c, final IdentifiedUser user)
      throws OrmException {
    return injector.createChildInjector(new FactoryModule() {
      @Override
      public void configure() {
        factory(ChangeUpdate.Factory.class);
        bind(IdentifiedUser.class).toInstance(user);
      }
    }).getInstance(ChangeUpdate.Factory.class).create(
        stubChangeControl(repoManager, c, user), TimeUtil.nowTs(),
        Ordering.<String> natural());
  }

  public static ChangeControl stubChangeControl(
      GitRepositoryManager repoManager, Change c, IdentifiedUser user)
      throws OrmException {
    ChangeControl ctl = EasyMock.createNiceMock(ChangeControl.class);
    expect(ctl.getChange()).andStubReturn(c);
    expect(ctl.getCurrentUser()).andStubReturn(user);
    ChangeNotes notes = new ChangeNotes(repoManager, c);
    notes = notes.load();
    expect(ctl.getNotes()).andStubReturn(notes);
    EasyMock.replay(ctl);
    return ctl;
  }

  public static void incrementPatchSet(Change change) {
    PatchSet.Id curr = change.currentPatchSetId();
    PatchSetInfo ps = new PatchSetInfo(new PatchSet.Id(
        change.getId(), curr != null ? curr.get() + 1 : 1));
    ps.setSubject("Change subject");
    change.setCurrentPatchSet(ps);
  }
}