package servlets.module.lesson;

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

import dbProcs.GetterIT;
import dbProcs.Setter;
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;

public class CsrfLessonIT {

  private static String lang = "en_GB";
  private static final Logger log = LogManager.getLogger(CsrfLessonIT.class);
  private static String applicationRoot = new String();
  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();
    // Open All modules
    if (!Setter.openAllModules(applicationRoot, false)) {
      fail("Could not Mark All Modules As Open");
    }
  }

  public String getModuleDoPost(String messageForAdmin, String csrfToken)
      throws ServletException, IOException {

    int expectedResponseCode = 302;
    String servletClassName = "CsrfLesson";
    log.debug("Creating " + servletClassName + " Servlet Instance");
    CsrfLesson servlet = new CsrfLesson();
    servlet.init(new MockServletConfig(servletClassName));

    // Setup Servlet Parameters and Attributes
    log.debug("Setting Up Params and Atrributes");
    request.addParameter("messageForAdmin", messageForAdmin);
    // Adding Correct CSRF Token (Token Submitted)
    request.addParameter("csrfToken", csrfToken);

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

    if (response.getStatus() != expectedResponseCode) {
      fail(
          servletClassName
              + " Servlet Returned "
              + response.getStatus()
              + " Code. "
              + expectedResponseCode
              + " Expected");
    } else {
      log.debug("302 OK Detected");
      log.debug(
          servletClassName
              + " Successful, returning location retrieved: "
              + response.getContentAsString());
      return (response.getContentAsString());
    }

    return null;
  }

  @Test
  public void testLevelValidAnswer() throws SQLException, ServletException, IOException {
    String userName = "lessonTester";

    // Verify User Exists in DB
    GetterIT.verifyTestUser(applicationRoot, userName, userName);
    // Sign in as Normal User
    log.debug("Signing in as " + userName + " 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 {
      request.setCookies(response.getCookies());
      String falseIdTestValue = new String("1627312");
      String httpsBase = new String("https://localhost:8080/");
      request.getSession().setAttribute("falseId", falseIdTestValue); // Test Value
      String messageForAdmin =
          new String(httpsBase + "root/grantComplete/csrflesson?userId=" + falseIdTestValue);
      String servletResponse = getModuleDoPost(messageForAdmin, csrfToken);
      if (servletResponse.contains("You must be getting funky")) {
        String message = new String("General 'Funky' Error Detected");
        log.fatal(message);
        fail(message);
      }
      if (!servletResponse.contains("The result key for this lesson is")) {
        String message = new String("Valid Solution did not yeild Result Key");
        log.fatal(message);
        fail(message);
      } else if (!servletResponse.contains(
          "administrator@SecurityShepherd.com")) // This is hardcoded in
      // response. if it fails
      // then the level isn't
      // working for some reason
      {
        String message = new String("Unexpected CSRF Lesson Response");
        log.fatal(message);
        fail(message);
      }
    }
  }

  @Test
  public void testLevelInvalidAnswer() {
    String userName = "lessonTester";
    try {
      // Verify User Exists in DB
      GetterIT.verifyTestUser(applicationRoot, userName, userName);
      // Sign in as Normal User
      log.debug("Signing in as " + userName + " 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 {
        request.setCookies(response.getCookies());
        String falseIdTestValue = new String("1627312");
        String httpsBase = new String("https://localhost:8080/");
        request.getSession().setAttribute("falseId", falseIdTestValue); // Test Value
        String messageForAdmin =
            new String(
                httpsBase
                    + "root/grantComplete/csrflesson?userId="
                    + falseIdTestValue
                    + "wrong"); // +wrong
        // makes the
        // value
        // incorrect
        String servletResponse = getModuleDoPost(messageForAdmin, csrfToken);
        if (servletResponse.contains("You must be getting funky")) {
          String message = new String("General 'Funky' Error Detected");
          log.fatal(message);
          fail(message);
        }
        if (servletResponse.contains("The result key for this lesson is")) {
          String message = new String("Result Key Returned for incorrect submission");
          log.fatal(message);
          fail(message);
        } else if (!servletResponse.contains(
            "administrator@SecurityShepherd.com")) // This is hardcoded in
        // response. if it fails
        // then the level isn't
        // working for some reason
        {
          String message = new String("Unexpected CSRF Lesson Response");
          log.fatal(message);
          fail(message);
        }
      }
    } catch (Exception e) {
      log.fatal("Could not Complete: " + e.toString());
      fail("Could not Complete: " + e.toString());
    }
  }
}