/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_ucb.hxx"

#include "SerfHeadReqProcImpl.hxx"

using namespace com::sun::star;

namespace http_dav_ucp
{

SerfHeadReqProcImpl::SerfHeadReqProcImpl( const char* inPath,
                                          const DAVRequestHeaders& inRequestHeaders,
                                          const std::vector< ::rtl::OUString > & inHeaderNames,
                                          DAVResource & ioResource )
    : SerfRequestProcessorImpl( inPath, inRequestHeaders )
    , mpHeaderNames( &inHeaderNames )
    , mpResource( &ioResource )
{
}

SerfHeadReqProcImpl::~SerfHeadReqProcImpl()
{
}

serf_bucket_t * SerfHeadReqProcImpl::createSerfRequestBucket( serf_request_t * inSerfRequest )
{
    // create serf request
    serf_bucket_t *req_bkt = serf_request_bucket_request_create( inSerfRequest, 
                                                                 "HEAD",
                                                                 getPathStr(),
                                                                 0,
                                                                 serf_request_get_alloc( inSerfRequest ) );

    // set request header fields
    serf_bucket_t* hdrs_bkt = serf_bucket_request_get_headers( req_bkt );
    // general header fields provided by caller
    setRequestHeaders( hdrs_bkt );

    return req_bkt;
}

void SerfHeadReqProcImpl::processChunkOfResponseData( const char* /*data*/, 
                                                      apr_size_t /*len*/ )
{
    // nothing to do
}

namespace
{
    apr_status_t Serf_ProcessResponseHeader( void* inUserData,
                                             const char* inHeaderName,
                                             const char* inHeaderValue )
    {
        SerfHeadReqProcImpl* pReqProcImpl = static_cast< SerfHeadReqProcImpl* >( inUserData );
        pReqProcImpl->processSingleResponseHeader( inHeaderName,
                                                   inHeaderValue );

        return APR_SUCCESS;
    }
} // end of anonymous namespace

void SerfHeadReqProcImpl::handleEndOfResponseData( serf_bucket_t * inSerfResponseBucket )
{
    // read response header, if requested
    if ( mpHeaderNames != 0 && mpResource != 0 )
    {
        serf_bucket_t* SerfHeaderBucket = serf_bucket_response_get_headers( inSerfResponseBucket );
        if ( SerfHeaderBucket != 0 )
        {
            serf_bucket_headers_do( SerfHeaderBucket, 
                                    Serf_ProcessResponseHeader,
                                    this );
        }
    }
}

void SerfHeadReqProcImpl::processSingleResponseHeader( const char* inHeaderName,
                                                       const char* inHeaderValue )
{
    rtl::OUString aHeaderName( rtl::OUString::createFromAscii( inHeaderName ) );

    bool bStoreHeaderField = false;

    if ( mpHeaderNames->size() == 0 )
    {
        // store all header fields
        bStoreHeaderField = true;
    }
    else
    {
        // store only header fields which are requested
        std::vector< ::rtl::OUString >::const_iterator it( mpHeaderNames->begin() );
        const std::vector< ::rtl::OUString >::const_iterator end( mpHeaderNames->end() );

        while ( it != end )
        {
            // header names are case insensitive
            if ( (*it).equalsIgnoreAsciiCase( aHeaderName ) )
            {
                bStoreHeaderField = true;
                break;
            }
            else
            {
                ++it;
            }
        }
    }

    if ( bStoreHeaderField )
    {
        DAVPropertyValue thePropertyValue;
        thePropertyValue.IsCaseSensitive = false;
        thePropertyValue.Name = aHeaderName;
        thePropertyValue.Value <<= rtl::OUString::createFromAscii( inHeaderValue );
        mpResource->properties.push_back( thePropertyValue );
    }
}

} // namespace http_dav_ucp