/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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.
 */

package org.apache.geode.modules.session.internal.common;

import java.util.Map;

import javax.servlet.http.HttpSession;

import org.apache.geode.cache.Region;
import org.apache.geode.modules.session.catalina.internal.DeltaSessionStatistics;
import org.apache.geode.modules.session.internal.filter.util.TypeAwareMap;
import org.apache.geode.modules.util.RegionConfiguration;
import org.apache.geode.modules.util.SessionCustomExpiry;

public abstract class AbstractSessionCache implements SessionCache {

  /**
   * The sessionRegion is the <code>Region</code> that actually stores and replicates the
   * <code>Session</code>s.
   */
  protected Region<String, HttpSession> sessionRegion;

  /**
   * The operatingRegion is the <code>Region</code> used to do HTTP operations. if local cache is
   * enabled, then this will be the local <code>Region</code>; otherwise, it will be the session
   * <code>Region</code>.
   */
  protected Region<String, HttpSession> operatingRegion;

  protected Map<CacheProperty, Object> properties =
      new TypeAwareMap<CacheProperty, Object>(CacheProperty.class);

  protected DeltaSessionStatistics statistics;

  /**
   * {@inheritDoc}
   */
  @Override
  public void stop() {
    sessionRegion.close();
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public Region<String, HttpSession> getOperatingRegion() {
    return this.operatingRegion;
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public Region<String, HttpSession> getSessionRegion() {
    return this.sessionRegion;
  }

  protected void createStatistics() {
    this.statistics = new DeltaSessionStatistics(getCache().getDistributedSystem(),
        (String) properties.get(CacheProperty.STATISTICS_NAME));
  }

  /**
   * Build up a {@code RegionConfiguraton} object from parameters originally passed in as filter
   * initialization parameters.
   *
   * @return a {@code RegionConfiguration} object
   */
  protected RegionConfiguration createRegionConfiguration() {
    RegionConfiguration configuration = new RegionConfiguration();

    configuration.setRegionName((String) properties.get(CacheProperty.REGION_NAME));
    configuration
        .setRegionAttributesId((String) properties.get(CacheProperty.REGION_ATTRIBUTES_ID));

    configuration.setEnableGatewayDeltaReplication(
        (Boolean) properties.get(CacheProperty.ENABLE_GATEWAY_DELTA_REPLICATION));
    configuration.setEnableGatewayReplication(
        (Boolean) properties.get(CacheProperty.ENABLE_GATEWAY_REPLICATION));
    configuration
        .setEnableDebugListener((Boolean) properties.get(CacheProperty.ENABLE_DEBUG_LISTENER));
    // Need to set max inactive interval to tell the server to use our custom expiry
    configuration.setMaxInactiveInterval(0);
    configuration.setCustomExpiry(new SessionCustomExpiry());

    return configuration;
  }
}
