package org.apache.maven.archiva.webdav.util;

 /*

  * 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.

  */

 import org.apache.commons.lang.StringUtils;

 import org.apache.commons.lang.ArrayUtils;

 /**

  */

 public class RepositoryPathUtil

 {

     public static String getLogicalResource(final String href)

     {

         String logicalResource = null;

         String requestPathInfo = StringUtils.defaultString( href );

         //remove prefix ie /repository/blah becomes /blah

         requestPathInfo = removePrefix(requestPathInfo);

         // Remove prefixing slash as the repository id doesn't contain it;

         if ( requestPathInfo.startsWith( "/" ) )

         {

             requestPathInfo = requestPathInfo.substring( 1 );

         }        

         int slash = requestPathInfo.indexOf( '/' );

         if ( slash > 0 )

         {   

             logicalResource = requestPathInfo.substring( slash );

             if (logicalResource.endsWith( "/.." ) )

             {

                 logicalResource += "/";

             }

             if ( logicalResource != null && logicalResource.startsWith( "//" ) )

             {

                 logicalResource = logicalResource.substring( 1 );

             }

             if ( logicalResource == null )

             {

                 logicalResource = "/";

             }

         }

         else

         {

             logicalResource = "/";

         }

         return logicalResource;

     }

     public static String getRepositoryName(final String href)

     {

         String requestPathInfo = StringUtils.defaultString( href );

         //remove prefix ie /repository/blah becomes /blah

         requestPathInfo = removePrefix(requestPathInfo);

         // Remove prefixing slash as the repository id doesn't contain it;

         if ( requestPathInfo.startsWith( "/" ) )

         {

             requestPathInfo = requestPathInfo.substring( 1 );

         }

         // Find first element, if slash exists.

         int slash = requestPathInfo.indexOf( '/' );

         if ( slash > 0 )

         {

             // Filtered: "central/org/apache/maven/" -> "central"

             return requestPathInfo.substring( 0, slash );

         }

         return requestPathInfo;

     }

     private static String removePrefix(final String href)

     {

         String[] parts = StringUtils.split(href, '/');

         parts = (String[]) ArrayUtils.subarray(parts, 1, parts.length);

         if (parts == null || parts.length == 0)

         {

             return "/";

         }

         String joinedString = StringUtils.join(parts, '/');        

         if( href.endsWith( "/" ) )

         {

             joinedString = joinedString + "/";

         }

         return joinedString;

     }

 }