/*
    * 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.commons.vfs2.provider;
  
  import org.apache.commons.vfs2.FileName;
  import org.apache.commons.vfs2.FileSystemException;
  import org.apache.commons.vfs2.FileType;
  import org.apache.commons.vfs2.util.URIUtils;
  
  /**
   * Generic file name that represents a URL.
   */
  public class GenericURLFileName extends GenericFileName {
  
      private static final int BUFFER_SIZE = 250;
  
      private final String queryString;
  
      public GenericURLFileName(final String scheme, final String hostName, final int port, final int defaultPort,
              final String userName, final String password, final String path, final FileType type,
              final String queryString) {
          super(scheme, hostName, port, defaultPort, userName, password, path, type);
          this.queryString = queryString;
      }
  
      /**
       * Gets the query string.
       *
       * @return the query string part of the file name
       */
      public String getQueryString() {
          return queryString;
      }
  
      /**
       * Gets the path and query string e.g. /path/servlet?param1=true.
       *
       * @return the path and its query string
       */
      public String getPathQuery() {
          final StringBuilder sb = new StringBuilder(BUFFER_SIZE);
          sb.append(getPath());
          sb.append("?");
          sb.append(getQueryString());
  
          return sb.toString();
      }
  
      /**
       * Gets the path encoded suitable for url like file system e.g. (http, webdav).
       *
       * @param charset the charset used for the path encoding
       * @return The encoded path.
       * @throws FileSystemException If some other error occurs.
       */
      public String getPathQueryEncoded(final String charset) throws FileSystemException {
          if (getQueryString() == null) {
              if (charset != null) {
                  return URIUtils.encodePath(getPathDecoded(), charset);
              }
              return URIUtils.encodePath(getPathDecoded());
          }
  
          final StringBuilder sb = new StringBuilder(BUFFER_SIZE);
          if (charset != null) {
              sb.append(URIUtils.encodePath(getPathDecoded(), charset));
          } else {
              sb.append(URIUtils.encodePath(getPathDecoded()));
          }
          sb.append("?");
          sb.append(getQueryString());
          return sb.toString();
      }
  
      /**
       * Creates a FileName.
       *
       * @param absPath The absolute path.
       * @param type The FileType.
       * @return The FileName
       */
      @Override
      public FileName createName(final String absPath, final FileType type) {
          return new GenericURLFileName(getScheme(), getHostName(), getPort(), getDefaultPort(), getUserName(), getPassword(),
                  absPath, type, getQueryString());
     }
 
     /**
      * Appends query string to the uri.
      *
      * @return the uri
      */
     @Override
     protected String createURI() {
         if (getQueryString() != null) {
             final StringBuilder sb = new StringBuilder(BUFFER_SIZE);
             sb.append(super.createURI());
             sb.append("?");
             sb.append(getQueryString());
 
             return sb.toString();
         }
 
         return super.createURI();
     }
 
     /**
      * Encodes a URI.
      *
      * @param charset The character set.
      * @return The encoded URI
      * @throws FileSystemException if some other exception occurs.
      */
     public String getURIEncoded(final String charset) throws FileSystemException {
         final StringBuilder sb = new StringBuilder(BUFFER_SIZE);
         appendRootUri(sb, true);
         sb.append(getPathQueryEncoded(charset));
         return sb.toString();
     }
 }