/**************************************************************
 * 
 * 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.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_webdav.hxx"
#include "DAVSessionFactory.hxx"
#include "CurlSession.hxx"
#include "CurlUri.hxx"
#include <com/sun/star/lang/XMultiServiceFactory.hpp>

using namespace http_dav_ucp;
using namespace com::sun::star;

DAVSessionFactory::~DAVSessionFactory()
{
}

rtl::Reference< DAVSession > DAVSessionFactory::createDAVSession(
				const ::rtl::OUString & inUri,
				const uno::Reference< lang::XMultiServiceFactory > & rxSMgr )
    throw( DAVException )
{
    m_xMSF = rxSMgr;
    
    osl::MutexGuard aGuard( m_aMutex );

    if ( !m_xProxyDecider.get() )
        m_xProxyDecider.reset( new ucbhelper::InternetProxyDecider( rxSMgr ) );

    Map::iterator aIt( m_aMap.begin() );
    Map::iterator aEnd( m_aMap.end() );

    while ( aIt != aEnd )
	{
        if ( (*aIt).second->CanUse( inUri ) )
			break;

        ++aIt;
	}

    if ( aIt == aEnd )
    {
        CurlUri aURI( inUri );

        std::auto_ptr< DAVSession > xElement(
            new CurlSession( this, inUri, *m_xProxyDecider.get() ) );

        aIt = m_aMap.insert( Map::value_type( inUri, xElement.get() ) ).first;
        aIt->second->m_aContainerIt = aIt;
        xElement.release();
        return aIt->second;
    }
    else if ( osl_incrementInterlockedCount( &aIt->second->m_nRefCount ) > 1 )
    {
        rtl::Reference< DAVSession > xElement( aIt->second );
        osl_decrementInterlockedCount( &aIt->second->m_nRefCount );
        return xElement;
    }
    else
    {
        osl_decrementInterlockedCount( &aIt->second->m_nRefCount );
        aIt->second->m_aContainerIt = m_aMap.end();

        // If URL scheme is different from http or https we definitely
        // have to use a proxy and therefore can optimize the getProxy
        // call a little:
        CurlUri aURI( inUri );

        aIt->second = new CurlSession( this, inUri, *m_xProxyDecider.get() );
        aIt->second->m_aContainerIt = aIt;
        return aIt->second;
    }
}

void DAVSessionFactory::releaseElement( DAVSession * pElement ) SAL_THROW(())
{
    OSL_ASSERT( pElement );
    osl::MutexGuard aGuard( m_aMutex );
    if ( pElement->m_aContainerIt != m_aMap.end() )
        m_aMap.erase( pElement->m_aContainerIt );
}