/*
 * Copyright (C) 2015 Square, Inc.
 *
 * 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 keywhiz.service.resources.admin;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import java.io.IOException;
import java.util.List;
import javax.annotation.Nullable;
import keywhiz.IntegrationTestRule;
import keywhiz.TestClients;
import keywhiz.api.GroupDetailResponse;
import keywhiz.api.model.Group;
import keywhiz.client.KeywhizClient;
import keywhiz.commands.DbSeedCommand;
import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;
import org.junit.rules.RuleChain;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;

public class GroupsResourceIntegrationTest {
  KeywhizClient keywhizClient;

  @ClassRule public static final RuleChain chain = IntegrationTestRule.rule();

  @Before public void setUp() {
    keywhizClient = TestClients.keywhizClient();
  }

  @Test public void listsGroups() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());

    List<Group> groups = keywhizClient.allGroups();
    List<String> names = Lists.transform(groups, new Function<Group, String>() {
      @Override public String apply(@Nullable Group group) {
        return (group == null) ? null : group.getName();
      }
    });

    assertThat(names).contains("Security", "Web", "iOS"); // BlackOps may be deleted.
  }

  @Test(expected = KeywhizClient.UnauthorizedException.class)
  public void adminRejectsNonKeywhizUsers() throws IOException {
    keywhizClient.login("username", "password".toCharArray());
    keywhizClient.allGroups();
  }

  @Test(expected = KeywhizClient.UnauthorizedException.class)
  public void adminRejectsWithoutCookie() throws IOException {
    keywhizClient.allGroups();
  }

  @Test(expected = KeywhizClient.MalformedRequestException.class)
  public void createFailsWhenGroupExists() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    keywhizClient.createGroup("Blackops", "should already exist",
        ImmutableMap.of("app", "Blackopps-app"));
  }

  @Test public void createsGroup() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    GroupDetailResponse groupDetails =
        keywhizClient.createGroup("NewGroup", "", ImmutableMap.of("app", "NewApp"));
    assertThat(groupDetails.getName()).isEqualTo("NewGroup");

    List<Group> groups = keywhizClient.allGroups();
    List<String> names = Lists.transform(groups, new Function<Group, String>() {
      @Override public String apply(@Nullable Group group) {
        return (group == null) ? null : group.getName();
      }
    });
    assertThat(names).contains("NewGroup");
  }

  @Test public void getGroupInfo() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    GroupDetailResponse groupDetail = keywhizClient.groupDetailsForId(916);
    assertThat(groupDetail.getName()).isEqualTo("Blackops");
  }

  @Test public void getGroupInfoByName() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    Group group = keywhizClient.getGroupByName("Blackops");
    assertThat(group.getId()).isEqualTo(916);
  }

  @Test(expected = KeywhizClient.NotFoundException.class)
  public void notFoundOnMissingId() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    keywhizClient.groupDetailsForId(900000);
  }

  @Test(expected = KeywhizClient.NotFoundException.class)
  public void notFoundOnMissingName() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    keywhizClient.getGroupByName("non-existent-group");
  }

  @Test public void deletesGroup() throws IOException {
    keywhizClient.login(DbSeedCommand.defaultUser, DbSeedCommand.defaultPassword.toCharArray());
    keywhizClient.deleteGroupWithId(920);

    try {
      keywhizClient.groupDetailsForId(920);
      failBecauseExceptionWasNotThrown(KeywhizClient.NotFoundException.class);
    } catch (KeywhizClient.NotFoundException e) {
      // As expected, the group no longer exists.
    }
  }
}