package org.codeforamerica.open311.internals.caching;

 import java.io.IOException;

 import java.io.Serializable;

 import java.util.Date;

 import net.iharder.Base64;

 import org.joda.time.DateTime;

 /**

  * A pair of serializable, expiration date.

  * 

  * @author Santiago Munín <santimunin@gmail.com>

  * 

  */

 public class CacheableObject implements Serializable {

         private static final long serialVersionUID = -108175395476829305L;

         private Serializable object;

         private Date expirationTime;

         public CacheableObject(Serializable object, int hoursToLive) {

                 super();

                 this.object = object;

                 this.expirationTime = new DateTime().plusHours(hoursToLive).toDate();

         }

         public CacheableObject(String base64object) {

                 try {

                         CacheableObject thisObject = (CacheableObject) Base64

                                         .decodeToObject(base64object);

                         this.object = thisObject.object;

                         this.expirationTime = thisObject.expirationTime;

                 } catch (Exception e) {

                 }

         }

         public Object getObject() {

                 if (expirationTime != null) {

                         return expirationTime.after(new Date()) ? object : null;

                 }

                 return null;

         }

         /**

          * Return a serialized version of the object.

          * 

          * @return A base64 encoded string version of the object.

          */

         public String serialize() {

                 return serialize(this);

         }

         public static String serialize(Serializable object) {

                 try {

                         return new String(Base64.encodeObject(object));

                 } catch (IOException e) {

                         return null;

                 }

         }

 }