/*
 * 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.web.protocol;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import sonia.scm.NotFoundException;
import sonia.scm.PushStateDispatcher;
import sonia.scm.repository.DefaultRepositoryProvider;
import sonia.scm.repository.NamespaceAndName;
import sonia.scm.repository.Repository;
import sonia.scm.repository.RepositoryTestData;
import sonia.scm.repository.api.RepositoryService;
import sonia.scm.repository.api.RepositoryServiceFactory;
import sonia.scm.repository.spi.HttpScmProtocol;
import sonia.scm.web.UserAgent;
import sonia.scm.web.UserAgentParser;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Optional;

import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

@ExtendWith(MockitoExtension.class)
class HttpProtocolServletTest {

  @Mock
  private RepositoryServiceFactory serviceFactory;

  @Mock
  private NamespaceAndNameFromPathExtractor extractor;

  @Mock
  private PushStateDispatcher dispatcher;

  @Mock
  private UserAgentParser userAgentParser;

  @InjectMocks
  private HttpProtocolServlet servlet;

  @Mock
  private RepositoryService repositoryService;

  @Mock
  private UserAgent userAgent;

  @Mock
  private HttpServletRequest request;

  @Mock
  private HttpServletResponse response;

  @Mock
  private HttpScmProtocol protocol;

  @Nested
  class Browser {

    @BeforeEach
    void prepareMocks() {
      when(userAgentParser.parse(request)).thenReturn(userAgent);
      when(userAgent.isScmClient()).thenReturn(false);
      when(request.getRequestURI()).thenReturn("uri");
    }

    @Test
    void shouldDispatchBrowserRequests() throws ServletException, IOException {
      servlet.service(request, response);

      verify(dispatcher).dispatch(request, response, "uri");
    }

  }

  @Nested
  class ScmClient {

    @BeforeEach
    void prepareMocks() {
      when(userAgentParser.parse(request)).thenReturn(userAgent);
      when(userAgent.isScmClient()).thenReturn(true);
    }

    @Test
    void shouldHandleBadPaths() throws IOException, ServletException {
      when(request.getPathInfo()).thenReturn("/illegal");

      servlet.service(request, response);

      verify(response).setStatus(400);
    }

    @Test
    void shouldHandleNotExistingRepository() throws IOException, ServletException {
      when(request.getPathInfo()).thenReturn("/not/exists");

      NamespaceAndName repo = new NamespaceAndName("not", "exists");
      when(extractor.fromUri("/not/exists")).thenReturn(Optional.of(repo));
      when(serviceFactory.create(repo)).thenThrow(new NotFoundException("Test", "a"));

      servlet.service(request, response);

      verify(response).setStatus(404);
    }

    @Test
    void shouldDelegateToProvider() throws IOException, ServletException {
      NamespaceAndName repo = new NamespaceAndName("space", "name");
      when(extractor.fromUri("/space/name")).thenReturn(Optional.of(repo));
      when(serviceFactory.create(repo)).thenReturn(repositoryService);

      when(request.getPathInfo()).thenReturn("/space/name");
      Repository repository = RepositoryTestData.createHeartOfGold();
      when(repositoryService.getRepository()).thenReturn(repository);
      when(repositoryService.getProtocol(HttpScmProtocol.class)).thenReturn(protocol);

      servlet.service(request, response);

      verify(request).setAttribute(DefaultRepositoryProvider.ATTRIBUTE_NAME, repository);
      verify(protocol).serve(request, response, null);
      verify(repositoryService).close();
    }

  }
}