// Copyright (C) 2013 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.acceptance.git;

import static com.google.gerrit.acceptance.GitUtil.cloneProject;
import static org.junit.Assert.assertEquals;

import com.google.gerrit.acceptance.AbstractDaemonTest;
import com.google.gerrit.acceptance.PushOneCommit;
import com.google.gerrit.acceptance.TestAccount;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.common.LabelInfo;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gwtorm.server.OrmException;

import com.jcraft.jsch.JSchException;

import org.eclipse.jgit.api.errors.GitAPIException;
import org.junit.Before;
import org.junit.Test;

import java.io.IOException;

public abstract class AbstractPushForReview extends AbstractDaemonTest {
  protected enum Protocol {
    SSH, HTTP
  }

  private String sshUrl;

  @Before
  public void setUp() throws Exception {
    sshUrl = sshSession.getUrl();
  }

  protected void selectProtocol(Protocol p) throws GitAPIException, IOException {
    String url;
    switch (p) {
      case SSH:
        url = sshUrl;
        break;
      case HTTP:
        url = admin.getHttpUrl(server);
        break;
      default:
        throw new IllegalArgumentException("unexpected protocol: " + p);
    }
    git = cloneProject(url + "/" + project.get());
  }

  @Test
  public void testPushForMaster() throws GitAPIException, OrmException,
      IOException {
    PushOneCommit.Result r = pushTo("refs/for/master");
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, null);
  }

  @Test
  public void testPushForMasterWithTopic() throws GitAPIException,
      OrmException, IOException {
    // specify topic in ref
    String topic = "my/topic";
    PushOneCommit.Result r = pushTo("refs/for/master/" + topic);
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, topic);

    // specify topic as option
    r = pushTo("refs/for/master%topic=" + topic);
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, topic);
  }

  @Test
  public void testPushForMasterWithCc() throws GitAPIException, OrmException,
      IOException, JSchException {
    // cc one user
    String topic = "my/topic";
    PushOneCommit.Result r = pushTo("refs/for/master/" + topic + "%cc=" + user.email);
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, topic);

    // cc several users
    TestAccount user2 =
        accounts.create("another-user", "another.user@example.com", "Another User");
    r = pushTo("refs/for/master/" + topic + "%cc=" + admin.email + ",cc="
        + user.email + ",cc=" + user2.email);
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, topic);

    // cc non-existing user
    String nonExistingEmail = "non.existing@example.com";
    r = pushTo("refs/for/master/" + topic + "%cc=" + admin.email + ",cc="
        + nonExistingEmail + ",cc=" + user.email);
    r.assertErrorStatus("user \"" + nonExistingEmail + "\" not found");
  }

  @Test
  public void testPushForMasterWithReviewer() throws GitAPIException,
      OrmException, IOException, JSchException {
    // add one reviewer
    String topic = "my/topic";
    PushOneCommit.Result r = pushTo("refs/for/master/" + topic + "%r=" + user.email);
    r.assertOkStatus();
    r.assertChange(Change.Status.NEW, topic, user);

    // add several reviewers
    TestAccount user2 =
        accounts.create("another-user", "another.user@example.com", "Another User");
    r = pushTo("refs/for/master/" + topic + "%r=" + admin.email + ",r=" + user.email
        + ",r=" + user2.email);
    r.assertOkStatus();
    // admin is the owner of the change and should not appear as reviewer
    r.assertChange(Change.Status.NEW, topic, user, user2);

    // add non-existing user as reviewer
    String nonExistingEmail = "non.existing@example.com";
    r = pushTo("refs/for/master/" + topic + "%r=" + admin.email + ",r="
        + nonExistingEmail + ",r=" + user.email);
    r.assertErrorStatus("user \"" + nonExistingEmail + "\" not found");
  }

  @Test
  public void testPushForMasterAsDraft() throws GitAPIException, OrmException,
      IOException {
    // create draft by pushing to 'refs/drafts/'
    PushOneCommit.Result r = pushTo("refs/drafts/master");
    r.assertOkStatus();
    r.assertChange(Change.Status.DRAFT, null);

    // create draft by using 'draft' option
    r = pushTo("refs/for/master%draft");
    r.assertOkStatus();
    r.assertChange(Change.Status.DRAFT, null);
  }

  @Test
  public void testPushForMasterWithApprovals() throws GitAPIException,
      IOException, RestApiException {
    PushOneCommit.Result r = pushTo("refs/for/master/%l=Code-Review");
    r.assertOkStatus();
    ChangeInfo ci = get(r.getChangeId());
    LabelInfo cr = ci.labels.get("Code-Review");
    assertEquals(1, cr.all.size());
    assertEquals("Administrator", cr.all.get(0).name);
    assertEquals(1, cr.all.get(0).value.intValue());

    PushOneCommit push =
        pushFactory.create(db, admin.getIdent(), PushOneCommit.SUBJECT,
            "b.txt", "anotherContent", r.getChangeId());
    r = push.to(git, "refs/for/master/%l=Code-Review+2");

    ci = get(r.getChangeId());
    cr = ci.labels.get("Code-Review");
    assertEquals(1, cr.all.size());
    assertEquals("Administrator", cr.all.get(0).name);
    assertEquals(2, cr.all.get(0).value.intValue());
  }

  @Test
  public void testPushForMasterWithApprovals_MissingLabel() throws GitAPIException,
      IOException {
      PushOneCommit.Result r = pushTo("refs/for/master/%l=Verify");
      r.assertErrorStatus("label \"Verify\" is not a configured label");
  }

  @Test
  public void testPushForMasterWithApprovals_ValueOutOfRange() throws GitAPIException,
      IOException, RestApiException {
    PushOneCommit.Result r = pushTo("refs/for/master/%l=Code-Review-3");
    r.assertErrorStatus("label \"Code-Review\": -3 is not a valid value");
  }

  @Test
  public void testPushForNonExistingBranch() throws GitAPIException,
      OrmException, IOException {
    String branchName = "non-existing";
    PushOneCommit.Result r = pushTo("refs/for/" + branchName);
    r.assertErrorStatus("branch " + branchName + " not found");
  }

  private PushOneCommit.Result pushTo(String ref) throws GitAPIException,
      IOException {
    PushOneCommit push = pushFactory.create(db, admin.getIdent());
    return push.to(git, ref);
  }
}