/*
 * MIT License
 *
 * Copyright (c) 2020-present Cloudogu GmbH and Contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
    
package sonia.scm.it;

import org.apache.http.HttpStatus;
import org.assertj.core.api.Assertions;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import sonia.scm.it.utils.RepositoryUtil;
import sonia.scm.it.utils.TestData;
import sonia.scm.repository.client.api.RepositoryClient;
import sonia.scm.repository.client.api.RepositoryClientException;
import sonia.scm.web.VndMediaType;

import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Objects;

import static java.util.Arrays.asList;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static sonia.scm.it.utils.RepositoryUtil.addAndCommitRandomFile;
import static sonia.scm.it.utils.RestUtil.given;
import static sonia.scm.it.utils.ScmTypes.availableScmTypes;
import static sonia.scm.it.utils.TestData.OWNER;
import static sonia.scm.it.utils.TestData.READ;
import static sonia.scm.it.utils.TestData.USER_SCM_ADMIN;
import static sonia.scm.it.utils.TestData.WRITE;
import static sonia.scm.it.utils.TestData.callRepository;

@RunWith(Parameterized.class)
public class PermissionsITCase {

  public static final String USER_READ = "user_read";
  public static final String USER_PASS = "pass";
  private static final String USER_WRITE = "user_write";
  private static final String USER_OWNER = "user_owner";
  private static final String USER_OTHER = "user_other";

  @Rule
  public TemporaryFolder temporaryFolder = new TemporaryFolder();

  private final String repositoryType;
  private Collection<String> createdPermissions;


  public PermissionsITCase(String repositoryType) {
    this.repositoryType = repositoryType;
  }

  @Parameters(name = "{0}")
  public static Collection<String> createParameters() {
    return availableScmTypes();
  }

  @Before
  public void prepareEnvironment() {
    TestData.createDefault();
    TestData.createNotAdminUser(USER_READ, USER_PASS);
    TestData.createUserPermission(USER_READ, READ, repositoryType);
    TestData.createNotAdminUser(USER_WRITE, USER_PASS);
    TestData.createUserPermission(USER_WRITE, WRITE, repositoryType);
    TestData.createNotAdminUser(USER_OWNER, USER_PASS);
    TestData.createUserPermission(USER_OWNER, OWNER, repositoryType);
    TestData.createNotAdminUser(USER_OTHER, USER_PASS);
    createdPermissions = asList(USER_READ, USER_WRITE, USER_OWNER);
  }

  @Test
  public void readUserShouldNotSeePermissions() {
    assertNull(callRepository(USER_READ, USER_PASS, repositoryType, HttpStatus.SC_OK)
      .extract()
      .body().jsonPath().getString("_links.permissions.href"));
  }

  @Test
  public void readUserShouldNotSeeBruteForcePermissions() {
    given(VndMediaType.REPOSITORY_PERMISSION, USER_READ, USER_PASS)
      .when()
      .get(TestData.getDefaultPermissionUrl(USER_SCM_ADMIN, USER_SCM_ADMIN, repositoryType))
      .then()
      .statusCode(HttpStatus.SC_FORBIDDEN);
  }

  @Test
  public void writeUserShouldNotSeePermissions() {
    assertNull(callRepository(USER_WRITE, USER_PASS, repositoryType, HttpStatus.SC_OK)
      .extract()
      .body().jsonPath().getString("_links.permissions.href"));
  }

  @Test
  public void writeUserShouldNotSeeBruteForcePermissions() {
    given(VndMediaType.REPOSITORY_PERMISSION, USER_WRITE, USER_PASS)
      .when()
      .get(TestData.getDefaultPermissionUrl(USER_SCM_ADMIN, USER_SCM_ADMIN, repositoryType))
      .then()
      .statusCode(HttpStatus.SC_FORBIDDEN);
  }

  @Test
  public void ownerShouldSeePermissions() {
    List<Map> userPermissions = TestData.getUserPermissions(USER_OWNER, USER_PASS, repositoryType);
    Assertions.assertThat(userPermissions).extracting(e -> e.get("name")).containsAll(createdPermissions);
  }

  @Test
  public void otherUserShouldNotSeeRepository() {
    callRepository(USER_OTHER, USER_PASS, repositoryType, HttpStatus.SC_FORBIDDEN);
  }

  @Test
  public void otherUserShouldNotSeeBruteForcePermissions() {
    given(VndMediaType.REPOSITORY_PERMISSION, USER_OTHER, USER_PASS)
      .when()
      .get(TestData.getDefaultPermissionUrl(USER_SCM_ADMIN, USER_SCM_ADMIN, repositoryType))
      .then()
      .statusCode(HttpStatus.SC_FORBIDDEN);
  }

  @Test
  public void readUserShouldCloneRepository() throws IOException {
    RepositoryClient client = RepositoryUtil.createRepositoryClient(repositoryType, temporaryFolder.newFolder(), USER_READ, USER_PASS);
    assertEquals(1, Objects.requireNonNull(client.getWorkingCopy().list()).length);
  }

  @Test
  public void writeUserShouldCloneRepository() throws IOException {
    RepositoryClient client = RepositoryUtil.createRepositoryClient(repositoryType, temporaryFolder.newFolder(), USER_WRITE, USER_PASS);
    assertEquals(1, Objects.requireNonNull(client.getWorkingCopy().list()).length);
  }

  @Test
  public void ownerShouldCloneRepository() throws IOException {
    RepositoryClient client = RepositoryUtil.createRepositoryClient(repositoryType, temporaryFolder.newFolder(), USER_OWNER, USER_PASS);
    assertEquals(1, Objects.requireNonNull(client.getWorkingCopy().list()).length);
  }

  @Test
  public void otherUserShouldNotCloneRepository() {
    TestData.callRepository(USER_OTHER, USER_PASS, repositoryType, HttpStatus.SC_FORBIDDEN);
  }

  @Test(expected = RepositoryClientException.class)
  public void userWithReadPermissionShouldBeNotAuthorizedToCommit() throws IOException {
    createAndCommit(USER_READ);
  }

  @Test
  public void userWithOwnerPermissionShouldBeAuthorizedToCommit() throws IOException {
    createAndCommit(USER_OWNER);
  }

  @Test
  public void userWithWritePermissionShouldBeAuthorizedToCommit() throws IOException {
    createAndCommit(USER_WRITE);
  }

  private void createAndCommit(String username) throws IOException {
    RepositoryClient client = RepositoryUtil.createRepositoryClient(repositoryType, temporaryFolder.newFolder(), username, PermissionsITCase.USER_PASS);
    addAndCommitRandomFile(client, username);
  }

  @Test
  public void userWithOwnerPermissionShouldBeAuthorizedToDeleteRepository(){
    assertDeleteRepositoryOperation(HttpStatus.SC_NO_CONTENT, HttpStatus.SC_NOT_FOUND, USER_OWNER, repositoryType);
  }

  @Test
  public void userWithReadPermissionShouldNotBeAuthorizedToDeleteRepository(){
    assertDeleteRepositoryOperation(HttpStatus.SC_FORBIDDEN, HttpStatus.SC_OK, USER_READ, repositoryType);
  }

  @Test
  public void userWithWritePermissionShouldNotBeAuthorizedToDeleteRepository(){
    assertDeleteRepositoryOperation(HttpStatus.SC_FORBIDDEN, HttpStatus.SC_OK, USER_WRITE, repositoryType);
  }

  private void assertDeleteRepositoryOperation(int expectedDeleteStatus, int expectedGetStatus, String user, String repositoryType) {
    given(VndMediaType.REPOSITORY, user, PermissionsITCase.USER_PASS)

      .when()
      .delete(TestData.getDefaultRepositoryUrl(repositoryType))

      .then()
      .statusCode(expectedDeleteStatus);

    given(VndMediaType.REPOSITORY, user, PermissionsITCase.USER_PASS)

      .when()
      .get(TestData.getDefaultRepositoryUrl(repositoryType))

      .then()
      .statusCode(expectedGetStatus);
  }
}