package servlets.admin.moduleManagement;

import static org.junit.jupiter.api.Assertions.fail;

import jakarta.servlet.ServletException;
import java.io.IOException;
import java.sql.SQLException;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.mock.web.MockServletConfig;
import testUtils.TestProperties;
import utils.ModuleBlock;

/**
 * This class just tests the servlet code. The Setter code is better tested in the SetterIT test's /
 * GetModule tests
 *
 * @author Mark Denihan
 */
public class EnableModuleBlockIT {

  private static final Logger log = LogManager.getLogger(EnableModuleBlockIT.class);
  private static String applicationRoot = new String();
  private static String lang = "en_GB";
  private MockHttpServletRequest request;
  private MockHttpServletResponse response;

  /** Creates DB or Restores DB to Factory Defaults before running tests */
  @BeforeAll
  public static void resetDatabase() throws IOException, SQLException {
    TestProperties.setTestPropertiesFileDirectory(log);

    TestProperties.createMysqlResource();

    TestProperties.ensureSchemaReady(log);
    TestProperties.reseedTestData();
  }

  @BeforeEach
  public void setUp() {
    request = new MockHttpServletRequest();
    response = new MockHttpServletResponse();
    ModuleBlock.reset();
    if (ModuleBlock.blockerEnabled) {
      TestProperties.failAndPrint("Unable to disable module block");
    }
  }

  public String doThePost(String csrfToken, String blockedMessage, String moduleId)
      throws ServletException, IOException {

    int expectedResponseCode = 302;
    String moduleClassName = "EnableModuleBlock";
    log.debug("Creating " + moduleClassName + " Servlet Instance");
    EnableModuleBlock servlet = new EnableModuleBlock();
    servlet.init(new MockServletConfig(moduleClassName));
    request.addParameter("moduleId", moduleId);
    request.addParameter("blockedMessage", blockedMessage);
    // Adding Correct CSRF Token (Token Submitted)
    request.addParameter("csrfToken", csrfToken);

    log.debug("Running doPost");
    servlet.doPost(request, response);

    if (response.getStatus() != expectedResponseCode) {
      fail(
          moduleClassName
              + " Servlet Returned "
              + response.getStatus()
              + " Code. "
              + expectedResponseCode
              + " Expected");
    } else {
      log.debug(expectedResponseCode + " Detected");
      log.debug(
          "Servlet Successful, returning response retrieved: " + response.getContentAsString());
      return (response.getContentAsString());
    }

    return null;
  }

  /**
   * @throws SQLException
   * @throws IOException
   * @throws ServletException
   */
  @Test
  public void testWithUserAuth() throws SQLException, ServletException, IOException {
    String userName = "configUserTester";
    String password = userName;
    // Verify / Create user in DB

    TestProperties.verifyTestUser(log, applicationRoot, userName, password);
    // Sign in as Normal User
    log.debug("Signing in as Normal User Through LoginServlet");
    TestProperties.loginDoPost(log, request, response, userName, userName, null, lang);
    log.debug("Login Servlet Complete, Getting CSRF Token");
    if (response.getCookie("token") == null) {
      fail("No CSRF Token Was Returned from Login Servlet");
    }
    String csrfToken = response.getCookie("token").getValue();
    if (csrfToken.isEmpty()) {
      String message = new String("No CSRF token returned from Login Servlet");
      log.fatal(message);
      fail(message);
    } else {
      String moduleId = "853c98bd070fe0d31f1ec8b4f2ada9d7fd1784c5"; // CSRF 7
      String blockedMessage = "Custom Blocked Message";
      // Add Cookies from Response to outgoing request
      request.setCookies(response.getCookies());
      String responseBody = doThePost(csrfToken, blockedMessage, moduleId);
      if (responseBody.contains("loggedOutSheep")) {
        log.debug("No Admin Access Result Received");
      } else {
        String message = "Did not get authoristion error for User accessing Admin Function";
        log.fatal(message);
        fail(message);
      }
    }
  }

  @Test
  public void testWithAdminAuth() throws SQLException, ServletException, IOException {
    String userName = "configAdminTester";
    String password = userName;
    // Verify / Create user in DB

    TestProperties.verifyTestAdmin(log, applicationRoot, userName, password);
    // Sign in as Normal User
    log.debug("Signing in as Admin User Through LoginServlet");
    TestProperties.loginDoPost(log, request, response, userName, userName, null, lang);
    log.debug("Login Servlet Complete, Getting CSRF Token");
    if (response.getCookie("token") == null) {
      fail("No CSRF Token Was Returned from Login Servlet");
    }
    String csrfToken = response.getCookie("token").getValue();
    if (csrfToken.isEmpty()) {
      String message = new String("No CSRF token returned from Login Servlet");
      log.fatal(message);
      fail(message);
    } else {
      String moduleId = "853c98bd070fe0d31f1ec8b4f2ada9d7fd1784c5"; // CSRF 7
      String blockedMessage = "Custom Blocked Message";
      // Add Cookies from Response to outgoing request
      request.setCookies(response.getCookies());
      String responseBody = doThePost(csrfToken, blockedMessage, moduleId);
      if (responseBody.contains("Block Enabled")) {
        log.debug("The Module Block was Enabled");
        if (ModuleBlock.getBlockerMessage().equalsIgnoreCase(blockedMessage)) {
          log.debug("Module Block Message is Correctly Set");
          if (ModuleBlock.blockerId.equalsIgnoreCase(moduleId)) {
            log.debug("Module Block Id is Correctly Set");
          } else {
            String message = "Module Block was incorrectly set";
            log.fatal(message);
            fail(message);
          }
        } else {
          String message = "Custom Block Message was not set";
          log.fatal(message);
          fail(message);
        }
      } else {
        String message = "Admin unable to use close all modules servlet";
        log.fatal(message);
        fail(message);
      }
    }
  }

  @Test
  public void testWithAdminAuthInvalidModule() throws SQLException, ServletException, IOException {
    String userName = "configAdminTester";
    String password = userName;
    // Verify / Create user in DB
    TestProperties.verifyTestAdmin(log, applicationRoot, userName, password);
    // Sign in as Normal User
    log.debug("Signing in as Admin User Through LoginServlet");
    TestProperties.loginDoPost(log, request, response, userName, userName, null, lang);
    log.debug("Login Servlet Complete, Getting CSRF Token");
    if (response.getCookie("token") == null) {
      fail("No CSRF Token Was Returned from Login Servlet");
    }
    String csrfToken = response.getCookie("token").getValue();
    if (csrfToken.isEmpty()) {
      String message = new String("No CSRF token returned from Login Servlet");
      log.fatal(message);
      fail(message);
    } else {
      String moduleId = "invalidModuleId";
      String blockedMessage = "Custom Blocked Message";
      // Add Cookies from Response to outgoing request
      request.setCookies(response.getCookies());
      String responseBody = doThePost(csrfToken, blockedMessage, moduleId);
      if (responseBody.contains("Invalid data Received")) {
        log.debug("Invalid Data Error Received");
      } else {
        String message = "Module Id Validation Failed";
        log.fatal(message);
        fail(message);
      }
    }
  }

  @Test
  public void testWithAdminAuthDefaultMessage() throws SQLException, ServletException, IOException {
    String userName = "configAdminTester";
    String password = userName;
    // Verify / Create user in DB

    TestProperties.verifyTestAdmin(log, applicationRoot, userName, password);
    // Sign in as Normal User
    log.debug("Signing in as Admin User Through LoginServlet");
    TestProperties.loginDoPost(log, request, response, userName, userName, null, lang);
    log.debug("Login Servlet Complete, Getting CSRF Token");
    if (response.getCookie("token") == null) {
      fail("No CSRF Token Was Returned from Login Servlet");
    }
    String csrfToken = response.getCookie("token").getValue();
    if (csrfToken.isEmpty()) {
      String message = new String("No CSRF token returned from Login Servlet");
      log.fatal(message);
      fail(message);
    } else {
      String moduleId = "853c98bd070fe0d31f1ec8b4f2ada9d7fd1784c5"; // CSRF 7
      String blockedMessage = ""; // Empty for Default Message
      // Add Cookies from Response to outgoing request
      request.setCookies(response.getCookies());
      String responseBody = doThePost(csrfToken, blockedMessage, moduleId);
      if (responseBody.contains("Block Enabled")) {
        log.debug("The Module Block was Enabled");
        if (ModuleBlock.getBlockerMessage()
            .equalsIgnoreCase("Ask your administrator when these modules will be made available")) {
          log.debug("Module Block Message is Correctly Set");
          if (ModuleBlock.blockerId.equalsIgnoreCase(moduleId)) {
            log.debug("Module Block Id is Correctly Set");
          } else {
            String message = "Module Block was incorrectly set";
            log.fatal(message);
            fail(message);
          }
        } else {
          String message = "Custom Block Message was not set";
          log.fatal(message);
          fail(message);
        }
      } else {
        String message = "Admin unable to use close all modules servlet";
        log.fatal(message);
        fail(message);
      }
    }
  }

  @Test
  public void testCsrf() throws SQLException, ServletException, IOException {
    String userName = "configAdminTester";
    String password = userName;
    // Verify / Create user in DB

    TestProperties.verifyTestAdmin(log, applicationRoot, userName, password);
    // Sign in as Admin User
    log.debug("Signing in as Admin Through LoginServlet");
    TestProperties.loginDoPost(log, request, response, userName, userName, null, lang);
    log.debug("Login Servlet Complete, Getting CSRF Token");
    if (response.getCookie("token") == null) {
      fail("No CSRF Token Was Returned from Login Servlet");
    }
    String csrfToken = response.getCookie("token").getValue();
    if (csrfToken.isEmpty()) {
      String message = new String("No CSRF token returned from Login Servlet");
      log.fatal(message);
      fail(message);
    } else {
      String moduleId = "853c98bd070fe0d31f1ec8b4f2ada9d7fd1784c5"; // CSRF 7
      String blockedMessage = "Custom Blocked Message";
      // Add Cookies from Response to outgoing request
      request.setCookies(response.getCookies());
      String responseBody = doThePost("wrongToken", blockedMessage, moduleId);
      if (responseBody.isEmpty()) {
        log.debug("CSRF Error Occurred (Expected Empty Response)");
      } else {
        String message = "CSRF Error Not Detected with Bad CSRF Token";
        log.fatal(message);
        fail(message);
      }
    }
  }
}