/*
    * 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.myfaces.tobago.internal.util;
  
  import javax.faces.FacesException;
  import javax.faces.FacesWrapper;
  import javax.faces.component.StateHolder;
  import javax.faces.context.FacesContext;
  import javax.servlet.http.Part;
  import java.io.IOException;
  import java.io.InputStream;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.util.Collection;
  
  public class HttpPartWrapper implements Part, FacesWrapper<Part>, StateHolder {
    private Part delegate;
  
    public HttpPartWrapper() {
    }
  
    public HttpPartWrapper(final Part delegate) {
      this.delegate = delegate;
    }
  
    @Override
    public void delete() throws IOException {
      getWrapped().delete();
    }
  
    @Override
    public String getContentType() {
      return getWrapped().getContentType();
    }
  
    @Override
    public String getHeader(final String headerName) {
      return getWrapped().getHeader(headerName);
    }
  
    @Override
    public Collection<String> getHeaderNames() {
      return getWrapped().getHeaderNames();
    }
  
    @Override
    public Collection<String> getHeaders(final String headerName) {
      return getWrapped().getHeaders(headerName);
    }
  
    @Override
    public InputStream getInputStream() throws IOException {
      return getWrapped().getInputStream();
    }
  
    @Override
    public String getName() {
      return getWrapped().getName();
    }
  
    @Override
    public long getSize() {
      return getWrapped().getSize();
    }
  
    @Override
    public void write(final String fileName) throws IOException {
      getWrapped().write(fileName);
    }
  
    public String getSubmittedFileName() {
      final Part wrapped = getWrapped();
      try {
        final Method m = wrapped.getClass().getMethod("getSubmittedFileName");
        return (String) m.invoke(wrapped);
      } catch (final NoSuchMethodException ex) {
        throw new FacesException(ex);
      } catch (final SecurityException ex) {
        throw new FacesException(ex);
      } catch (final IllegalAccessException ex) {
        throw new FacesException(ex);
      } catch (final IllegalArgumentException ex) {
       throw new FacesException(ex);
     } catch (final InvocationTargetException ex) {
       throw new FacesException(ex);
     }
   }
 
   @Override
   public Object saveState(final FacesContext context) {
     return null;
   }
 
   @Override
   public void restoreState(final FacesContext context, final Object state) {
   }
 
   @Override
   public boolean isTransient() {
     return true;
   }
 
   @Override
   public void setTransient(final boolean newTransientValue) {
   }
 
   @Override
   public Part getWrapped() {
     return delegate;
   }
 
 }