/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2016 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.reporting.platform.plugin.cache;

import net.sf.ehcache.CacheManager;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.pentaho.platform.engine.core.system.PentahoSessionHolder;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.engine.core.system.StandaloneSession;
import org.pentaho.reporting.platform.plugin.MockTableModel;
import org.pentaho.reporting.platform.plugin.output.ReportOutputHandler;

import java.util.HashMap;
import java.util.Map;

import static junit.framework.Assert.assertNotSame;
import static junit.framework.Assert.assertSame;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.mockito.Mockito.mock;

public class DefaultReportCacheIT {
  private DefaultReportCache dataCache;
  private ReportCacheKey dataCacheKey;
  private MockTableModel tableModel;
  StandaloneSession session;

  @Before
  public void setup() throws Exception {
    createPentahoSession();
    setupDataCache();

    setupDataCacheKey( "" );
    setupTableModel();
  }

  @After
  public void teardown() throws Exception {
    destroyPentahoSession();
  }

  @Test
  public void testReturnTableModel() throws Exception {
    setupDataCacheKey( null );
    assertNull( dataCache.get( dataCacheKey ) );

    setupDataCacheKey( "" );
    assertNull( dataCache.get( dataCacheKey ) );

    addAttributeToPentahoSession( "org.pentaho.reporting.platform.plugin.cache.DefaultReportCache-Cache",
      CacheManager.create() );
    assertNull( dataCache.get( dataCacheKey ) );

    ReportOutputHandler report = mock( ReportOutputHandler.class );

    setupDataCacheKey( null );
    assertSame( report, dataCache.put( dataCacheKey, report ) );

    setupDataCacheKey( "" );
    assertNotSame( report, dataCache.put( dataCacheKey, report ) );
  }

  @Test
  public void testCleanup() throws Exception {
    final StandaloneSession session = new StandaloneSession( "test", "100500" );
    PentahoSessionHolder.setSession( session );

    final FileSystemCacheBackend backend = new FileSystemCacheBackend();
    backend.setCachePath( "/tmp" );
    final IReportContentCache cache = new PluginSessionCache( backend );
    cache.put( "test", mock( IReportContent.class ) );
    assertNotNull( cache.get( "test" ) );
    PentahoSystem.invokeLogoutListeners( session );
    assertNull( cache.get( "test" ) );
  }

  private void createPentahoSession() {
    session = new StandaloneSession();
    PentahoSessionHolder.setSession( session );
  }

  private void addAttributeToPentahoSession( String name, Object value ) {
    session.setAttribute( name, value );
    PentahoSessionHolder.setSession( session );
  }

  private void destroyPentahoSession() {
    PentahoSessionHolder.setSession( null );
  }

  private void setupDataCache() {
    dataCache = new DefaultReportCache();
  }

  private void setupDataCacheKey( String sessionId ) {
    Map<String, Object> parameter = new HashMap<String, Object>() {
      {
        put( "someParameter1", "someValue1" );
        put( "someParameter2", "someValue2" );
      }
    };
    dataCacheKey = new ReportCacheKey( sessionId, parameter );
  }

  private void setupTableModel() {
    tableModel = new MockTableModel();
  }
}