/*

  * Copyright 2007 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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.kuali.rice.kns.web.struts.action;

 import java.util.List;

 import org.apache.log4j.Logger;

 import org.apache.struts.config.ModuleConfig;

 import org.apache.struts.upload.CommonsMultipartRequestHandler;

 /**

  * Subclass of the MultipartRequestHandler used by Struts.  This one allows the maximum upload size to be set

  * by the application rather than by an init parameter. 

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 public class KualiMultipartRequestHandler extends CommonsMultipartRequestHandler {

     private static final Logger LOG = Logger.getLogger(KualiMultipartRequestHandler.class);

     private String sizeMax;

     /**

      * Returns the maximum allowable size, in bytes, of an uploaded file. The

      * value is obtained from the current module's controller configuration.

      *

      * @param mc The current module's configuration.

      *

      * @return The maximum allowable file size, in bytes.

      */

     public long getSizeMax(ModuleConfig mc) {

         return convertSizeToBytes( sizeMax, super.getSizeMax(mc) );

     }

     public String getSizeMaxString() {

         return sizeMax;

     }    

     public void setSizeMax( String sizeString ) {

             this.sizeMax = sizeString;

     }

 //    public long convertSizeToBytes(String sizeString, long defaultSize) {

 //        return super.convertSizeToBytes(sizeString, defaultSize);

 //    }

     /**

      * Sets the max size string to the item in the list that represents the largest size.

      */

     public void setMaxUploadSizeToMaxOfList( List<String> sizes ) {

         long maxSize = 0L;

         for ( String size : sizes ) {

             long currSize = convertSizeToBytes(size, 0L);

             if ( currSize == 0L ) {

                 LOG.warn( "Unable to parse max size (" + size + ").  Ignoring." );

             }

             if ( currSize > maxSize ) {

                 maxSize = currSize;

                 sizeMax = size;

             }

         }

     }

     public long calculateMaxUploadSizeToMaxOfList( List<String> sizes ) {

             long maxSize = 0L;

             for ( String size : sizes ) {

                 long currSize = convertSizeToBytes(size, 0L);

                 if ( currSize == 0L ) {

                     LOG.warn( "Unable to parse max size (" + size + ").  Ignoring." );

                 }

                 if ( currSize > maxSize ) {

                     maxSize = currSize;                    

                 }

             }

             return maxSize;

     }

 }