/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

#include "SerfGetReqProcImpl.hxx"

using namespace com::sun::star;

namespace http_dav_ucp
{

SerfGetReqProcImpl::SerfGetReqProcImpl( const char* inPath,
                                        const DAVRequestHeaders& inRequestHeaders,
                                        const rtl::Reference< SerfInputStream > & xioInStrm )
    : SerfRequestProcessorImpl( inPath, inRequestHeaders )
    , xInputStream( xioInStrm )
    , xOutputStream()
    , mpHeaderNames( nullptr )
    , mpResource( nullptr )
{
}

SerfGetReqProcImpl::SerfGetReqProcImpl( const char* inPath,
                                        const DAVRequestHeaders& inRequestHeaders,
                                        const rtl::Reference< SerfInputStream > & xioInStrm,
                                        const std::vector< OUString > & inHeaderNames,
                                        DAVResource & ioResource )
    : SerfRequestProcessorImpl( inPath, inRequestHeaders )
    , xInputStream( xioInStrm )
    , xOutputStream()
    , mpHeaderNames( &inHeaderNames )
    , mpResource( &ioResource )
{
}

SerfGetReqProcImpl::SerfGetReqProcImpl( const char* inPath,
                                        const DAVRequestHeaders& inRequestHeaders,
                                        const css::uno::Reference< css::io::XOutputStream > & xioOutStrm )
    : SerfRequestProcessorImpl( inPath, inRequestHeaders )
    , xInputStream()
    , xOutputStream( xioOutStrm )
    , mpHeaderNames( nullptr )
    , mpResource( nullptr )
{
}

SerfGetReqProcImpl::SerfGetReqProcImpl( const char* inPath,
                                        const DAVRequestHeaders& inRequestHeaders,
                                        const css::uno::Reference< css::io::XOutputStream > & xioOutStrm,
                                        const std::vector< OUString > & inHeaderNames,
                                        DAVResource & ioResource )
    : SerfRequestProcessorImpl( inPath, inRequestHeaders )
    , xInputStream()
    , xOutputStream( xioOutStrm )
    , mpHeaderNames( &inHeaderNames )
    , mpResource( &ioResource )
{
}

SerfGetReqProcImpl::~SerfGetReqProcImpl()
{
}

serf_bucket_t * SerfGetReqProcImpl::createSerfRequestBucket( serf_request_t * inSerfRequest )
{
    // create serf request
    serf_bucket_t *req_bkt = serf_request_bucket_request_create( inSerfRequest,
                                                                 "GET",
                                                                 getPathStr(),
                                                                 nullptr,
                                                                 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 SerfGetReqProcImpl::processChunkOfResponseData( const char* data,
                                                     apr_size_t len )
{
    if ( xInputStream.is() )
    {
        xInputStream->AddToStream( data, len );
    }
    else if ( xOutputStream.is() )
    {
        const uno::Sequence< sal_Int8 > aDataSeq( reinterpret_cast<const sal_Int8 *>(data), len );
        xOutputStream->writeBytes( aDataSeq );
    }
}

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

        return APR_SUCCESS;
    }
} // end of anonymous namespace

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

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

    bool bStoreHeaderField = false;

    if ( mpHeaderNames->empty() )
    {
        // store all header fields
        bStoreHeaderField = true;
    }
    else
    {
        // store only header fields which are requested
        std::vector< OUString >::const_iterator it( mpHeaderNames->begin() );
        const std::vector< 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 <<= OUString::createFromAscii( inHeaderValue );
        mpResource->properties.push_back( thePropertyValue );
    }
}

} // namespace http_dav_ucp

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