// 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.ssh;

import static com.google.gerrit.acceptance.git.GitUtil.createProject;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import com.google.gerrit.acceptance.AbstractDaemonTest;
import com.google.gerrit.acceptance.AccountCreator;
import com.google.gerrit.acceptance.GcAssert;
import com.google.gerrit.acceptance.SshSession;
import com.google.gerrit.acceptance.TestAccount;
import com.google.gerrit.common.data.GarbageCollectionResult;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.config.AllProjectsName;
import com.google.gerrit.server.git.GarbageCollection;
import com.google.gerrit.server.git.GarbageCollectionQueue;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;

import com.jcraft.jsch.JSchException;

import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.util.Arrays;
import java.util.Locale;

public class GarbageCollectionIT extends AbstractDaemonTest {

  @Inject
  private AccountCreator accounts;

  @Inject
  private AllProjectsName allProjects;

  @Inject
  private GarbageCollection.Factory garbageCollectionFactory;

  @Inject
  private GarbageCollectionQueue gcQueue;

  @Inject
  private GcAssert gcAssert;

  private TestAccount admin;
  private SshSession sshSession;
  private Project.NameKey project1;
  private Project.NameKey project2;
  private Project.NameKey project3;

  @Before
  public void setUp() throws Exception {
    admin =
        accounts.create("admin", "admin@example.com", "Administrator",
            "Administrators");

    sshSession = new SshSession(admin);

    project1 = new Project.NameKey("p1");
    createProject(sshSession, project1.get());

    project2 = new Project.NameKey("p2");
    createProject(sshSession, project2.get());

    project3 = new Project.NameKey("p3");
    createProject(sshSession, project3.get());
  }

  @Test
  public void testGc() throws JSchException, IOException {
    String response =
        sshSession.exec("gerrit gc \"" + project1.get() + "\" \""
            + project2.get() + "\"");
    assertFalse(sshSession.hasError());
    assertNoError(response);
    gcAssert.assertHasPackFile(project1, project2);
    gcAssert.assertHasNoPackFile(allProjects, project3);
  }

  @Test
  public void testGcAll() throws JSchException, IOException {
    String response = sshSession.exec("gerrit gc --all");
    assertFalse(sshSession.hasError());
    assertNoError(response);
    gcAssert.assertHasPackFile(allProjects, project1, project2, project3);
  }

  @Test
  public void testGcWithoutCapability_Error() throws IOException, OrmException,
      JSchException {
    SshSession s = new SshSession(accounts.create("user", "user@example.com", "User"));
    s.exec("gerrit gc --all");
    assertError("fatal: user does not have \"runGC\" capability.", s.getError());
  }

  @Test
  public void testGcAlreadyScheduled() {
    gcQueue.addAll(Arrays.asList(project1));
    GarbageCollectionResult result = garbageCollectionFactory.create().run(
        Arrays.asList(allProjects, project1, project2, project3));
    assertTrue(result.hasErrors());
    assertEquals(1, result.getErrors().size());
    GarbageCollectionResult.Error error = result.getErrors().get(0);
    assertEquals(GarbageCollectionResult.Error.Type.GC_ALREADY_SCHEDULED, error.getType());
    assertEquals(project1, error.getProjectName());
  }

  private void assertError(String expectedError, String response) {
    assertTrue(response, response.contains(expectedError));
  }

  private void assertNoError(String response) {
    assertFalse(response, response.toLowerCase(Locale.US).contains("error"));
  }
}