/*******************************************************************************
 * ============LICENSE_START==================================================
 * * org.onap.dmaap
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * ===========================================================================
 * * 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.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.dmaap.datarouter.provisioning;

import static org.hamcrest.Matchers.notNullValue;
import static org.mockito.Matchers.argThat;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
public class StatisticsServletTest {

  private StatisticsServlet statisticsServlet;

  @Mock
  private HttpServletRequest request;

  @Mock
  private HttpServletResponse response;

  private static EntityManagerFactory emf;
  private static EntityManager em;

  @BeforeClass
  public static void init() {
    emf = Persistence.createEntityManagerFactory("dr-unit-tests");
    em = emf.createEntityManager();
    System.setProperty(
            "org.onap.dmaap.datarouter.provserver.properties",
            "src/test/resources/h2Database.properties");
  }

  @AfterClass
  public static void tearDownClass() {
    em.clear();
    em.close();
    emf.close();
  }

  @Before
  public void setUp() throws Exception {
    statisticsServlet = new StatisticsServlet();
    buildRequestParameters();
  }

  @Test
  public void Given_Request_Is_HTTP_DELETE_SC_METHOD_NOT_ALLOWED_Response_Is_Generated()
      throws Exception {
    statisticsServlet.doDelete(request, response);
    verify(response).sendError(eq(HttpServletResponse.SC_METHOD_NOT_ALLOWED),
        argThat(notNullValue(String.class)));
  }

  @Test
  public void Given_Request_Is_HTTP_PUT_SC_METHOD_NOT_ALLOWED_Response_Is_Generated()
      throws Exception {
    statisticsServlet.doPut(request, response);
    verify(response).sendError(eq(HttpServletResponse.SC_METHOD_NOT_ALLOWED),
        argThat(notNullValue(String.class)));
  }

  @Test
  public void Given_Request_Is_HTTP_POST_SC_METHOD_NOT_ALLOWED_Response_Is_Generated()
      throws Exception {
    statisticsServlet.doPost(request, response);
    verify(response).sendError(eq(HttpServletResponse.SC_METHOD_NOT_ALLOWED),
        argThat(notNullValue(String.class)));
  }

  @Test
  public void Given_Request_Is_HTTP_GET_With_Incorrect_Parameters_Then_Bad_Request_Response_Is_Generated()
      throws Exception {
    when(request.getParameter("type")).thenReturn("get");
    statisticsServlet.doGet(request, response);
    verify(response)
        .sendError(eq(HttpServletResponse.SC_BAD_REQUEST), argThat(notNullValue(String.class)));
  }

  @Test
  public void Given_Request_Is_HTTP_GET_With_GroupId_But_No_FeedId_Parameters_Then_Request_Succeeds()
      throws Exception {
    ServletOutputStream outStream = mock(ServletOutputStream.class);
    when(response.getOutputStream()).thenReturn(outStream);
    statisticsServlet.doGet(request, response);
    verify(response).setStatus(eq(HttpServletResponse.SC_OK));
  }

  @Test
  public void Given_Request_Is_HTTP_GET_With_GroupId_And_FeedId_Parameters_Then_Request_Succeeds()
      throws Exception {
    when(request.getParameter("feedid")).thenReturn("1");
    when(request.getParameter("statusCode")).thenReturn("500");
    ServletOutputStream outStream = mock(ServletOutputStream.class);
    when(response.getOutputStream()).thenReturn(outStream);
    statisticsServlet.doGet(request, response);
    verify(response).setStatus(eq(HttpServletResponse.SC_OK));
  }

  private void buildRequestParameters() {
    when(request.getParameter("type")).thenReturn("exp");
    when(request.getParameter("publishId")).thenReturn("ID");
    when(request.getParameter("statusCode")).thenReturn("success");
    when(request.getParameter("expiryReason")).thenReturn("other");
    when(request.getParameter("start")).thenReturn("0");
    when(request.getParameter("end")).thenReturn("0");
    when(request.getParameter("output_type")).thenReturn("csv");
    when(request.getParameter("start_time")).thenReturn("13");
    when(request.getParameter("end_time")).thenReturn("15");
    when(request.getParameter("time")).thenReturn("10");
    when(request.getParameter("groupid")).thenReturn("1");
    when(request.getParameter("subid")).thenReturn("1");
  }
}