/*
 * The contents of this file are subject to the terms of the Common Development and
 * Distribution License (the License). You may not use this file except in compliance with the
 * License.
 *
 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
 * specific language governing permission and limitations under the License.
 *
 * When distributing Covered Software, include this CDDL Header Notice in each file and include
 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
 * Header, with the fields enclosed by brackets [] replaced by your own identifying
 * information: "Portions Copyright [year] [name of copyright owner]".
 *
 * Copyright 2008 Sun Microsystems, Inc.
 * Portions Copyright 2014-2016 ForgeRock AS.
 */
package org.opends.server.api;

import static org.testng.Assert.*;

import java.util.LinkedHashMap;

import org.forgerock.i18n.LocalizableMessage;
import org.forgerock.opendj.ldap.DN;
import org.opends.server.TestCaseUtils;
import org.opends.server.core.DirectoryServer;
import org.opends.server.extensions.DummyAlertHandler;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

/** A set of generic alert handler test cases. */
public class AlertHandlerTestCase
       extends APITestCase
       implements AlertGenerator
{
  /** The alert type to use for these tests. */
  public static final String ALERT_TYPE = "org.opends.test.TestAlert";

  /** The alert description to use for these tests. */
  public static final String ALERT_DESCRIPTION =
       "This is the alert description";

  /** The alert message to use for these tests. */
  public static final LocalizableMessage ALERT_MESSAGE = LocalizableMessage.raw("This is the alert message");

  /**
   * Ensures that the Directory Server is running and registers with it as an
   * alert generator.
   *
   * @throws  Exception  If an unexpected problem occurs.
   */
  @BeforeClass
  public void startServer()
         throws Exception
  {
    TestCaseUtils.startServer();
    DirectoryServer.registerAlertGenerator(this);
  }

  /**
   * Tests the ability of the alert handler to send an administrative alert
   * with no special configuration.
   */
  @Test
  public void testAlertHandler()
  {
    int count = DummyAlertHandler.getAlertCount();

    DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
    assertEquals(DummyAlertHandler.getAlertCount(), count+1);
  }

  /** Tests alert handler functionality when a given alert is explicitly enabled. */
  @Test
  public void testEnabledAlert()
  {
    TestCaseUtils.dsconfig(
      "set-alert-handler-prop",
      "--handler-name", "Dummy Alert Handler",
      "--add", "enabled-alert-type:" + ALERT_TYPE);

    try
    {
      int count = DummyAlertHandler.getAlertCount();

      DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
      assertEquals(DummyAlertHandler.getAlertCount(), count+1);
    }
    finally
    {
      TestCaseUtils.dsconfig(
        "set-alert-handler-prop",
        "--handler-name", "Dummy Alert Handler",
        "--remove", "enabled-alert-type:" + ALERT_TYPE);
    }
  }

  /**
   * Tests alert handler functionality when a given alert is not explicitly
   * enabled but others are.
   */
  @Test
  public void testNotEnabledAlert()
  {
    TestCaseUtils.dsconfig(
      "set-alert-handler-prop",
      "--handler-name", "Dummy Alert Handler",
      "--add", "enabled-alert-type:" + ALERT_TYPE + ".bogus");

    try
    {
      int count = DummyAlertHandler.getAlertCount();

      DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
      assertEquals(DummyAlertHandler.getAlertCount(), count);
    }
    finally
    {
      TestCaseUtils.dsconfig(
        "set-alert-handler-prop",
        "--handler-name", "Dummy Alert Handler",
        "--remove", "enabled-alert-type:" + ALERT_TYPE + ".bogus");
    }
  }

  /** Tests alert handler functionality when a given alert is explicitly disabled. */
  @Test
  public void testDisabledAlert()
  {
    TestCaseUtils.dsconfig(
      "set-alert-handler-prop",
      "--handler-name", "Dummy Alert Handler",
      "--add", "disabled-alert-type:" + ALERT_TYPE);

    try
    {
      int count = DummyAlertHandler.getAlertCount();

      DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
      assertEquals(DummyAlertHandler.getAlertCount(), count);
    }
    finally
    {
      TestCaseUtils.dsconfig(
        "set-alert-handler-prop",
        "--handler-name", "Dummy Alert Handler",
        "--remove", "disabled-alert-type:" + ALERT_TYPE);
    }
  }

  /**
   * Tests alert handler functionality when a given alert is not explicitly
   * disabled but others are.
   */
  @Test
  public void testNotDisabledAlert()
  {
    TestCaseUtils.dsconfig(
      "set-alert-handler-prop",
      "--handler-name", "Dummy Alert Handler",
      "--add", "disabled-alert-type:" + ALERT_TYPE + ".bogus");

    try
    {
      int count = DummyAlertHandler.getAlertCount();

      DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
      assertEquals(DummyAlertHandler.getAlertCount(), count+1);
    }
    finally
    {
      TestCaseUtils.dsconfig(
        "set-alert-handler-prop",
        "--handler-name", "Dummy Alert Handler",
        "--remove", "disabled-alert-type:" + ALERT_TYPE + ".bogus");
    }
  }

  /** Tests alert handler functionality when a given alert is both enabled and disabled. */
  @Test
  public void testEnabledAndDisabledAlert()
  {
    TestCaseUtils.dsconfig(
      "set-alert-handler-prop",
      "--handler-name", "Dummy Alert Handler",
      "--add", "enabled-alert-type:" + ALERT_TYPE,
      "--add", "disabled-alert-type:" + ALERT_TYPE);

    try
    {
      int count = DummyAlertHandler.getAlertCount();

      DirectoryServer.sendAlertNotification(this, ALERT_TYPE, ALERT_MESSAGE);
      assertEquals(DummyAlertHandler.getAlertCount(), count);
    }
    finally
    {
      TestCaseUtils.dsconfig(
        "set-alert-handler-prop",
        "--handler-name", "Dummy Alert Handler",
        "--remove", "enabled-alert-type:" + ALERT_TYPE,
        "--remove", "disabled-alert-type:" + ALERT_TYPE);
    }
  }

  /**
   * Retrieves the DN of the configuration entry with which this alert
   * generator is associated.
   *
   * @return  The DN of the configuration entry with which this alert
   *          generator is associated.
   */
  @Override
  @Test // TestNG treats this as a test, so we annotate it to eliminate warnings
  public DN getComponentEntryDN()
  {
    try
    {
      return DN.valueOf("cn=Alert Handler Test Case,cn=config");
    }
    catch (Exception e)
    {
      return DN.rootDN();
    }
  }

  /**
   * Retrieves the fully-qualified name of the Java class for this
   * alert generator implementation.
   *
   * @return  The fully-qualified name of the Java class for this
   *          alert generator implementation.
   */
  @Override
  @Test // TestNG treats this as a test, so we annotate it to eliminate warnings
  public String getClassName()
  {
    return getClass().getName();
  }

  /**
   * Retrieves information about the set of alerts that this generator
   * may produce.  The map returned should be between the notification
   * type for a particular notification and the human-readable
   * description for that notification.  This alert generator must not
   * generate any alerts with types that are not contained in this
   * list.
   *
   * @return  Information about the set of alerts that this generator
   *          may produce.
   */
  @Override
  @Test // TestNG treats this as a test, so we annotate it to eliminate warnings
  public LinkedHashMap<String,String> getAlerts()
  {
    LinkedHashMap<String,String> alerts = new LinkedHashMap<>();

    alerts.put(ALERT_TYPE, ALERT_DESCRIPTION);

    return alerts;
  }
}