/**************************************************************
 *
 * 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_io.hxx"

#include "connector.hxx"
#include <rtl/ustrbuf.hxx>
#include <algorithm>

using namespace ::osl;
using namespace ::rtl;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::connection;


namespace stoc_connector {
	template<class T>
	void notifyListeners(SocketConnection * pCon, sal_Bool * notified, T t)
	{
  		XStreamListener_hash_set listeners;

		{
			::osl::MutexGuard guard(pCon->_mutex);
			if(!*notified)
			{
				*notified = sal_True;
				listeners = pCon->_listeners;
			}
		}

		::std::for_each(listeners.begin(), listeners.end(), t);
	}


	static void callStarted(Reference<XStreamListener> xStreamListener)
	{
		xStreamListener->started();
	}

	struct callError {
		const Any & any;

		callError(const Any & any);

		void operator () (Reference<XStreamListener> xStreamListener);
	};

	callError::callError(const Any & aAny)
		: any(aAny)
	{
	}

	void callError::operator () (Reference<XStreamListener> xStreamListener)
	{
		xStreamListener->error(any);
	}

	static void callClosed(Reference<XStreamListener> xStreamListener)
	{
		xStreamListener->closed();
	}


	SocketConnection::SocketConnection( const OUString &sConnectionDescription ) :
		m_nStatus( 0 ),
		m_sDescription( sConnectionDescription ),
		_started(sal_False),
		_closed(sal_False),
		_error(sal_False)
	{
		// make it unique
		g_moduleCount.modCnt.acquire( &g_moduleCount.modCnt );
		m_sDescription += OUString( RTL_CONSTASCII_USTRINGPARAM( ",uniqueValue=" ) );
		m_sDescription += OUString::valueOf(
            sal::static_int_cast< sal_Int64 >(
                reinterpret_cast< sal_IntPtr >(&m_socket)),
            10 );
	}

	SocketConnection::~SocketConnection()
	{
		g_moduleCount.modCnt.release( &g_moduleCount.modCnt );
	}

	void SocketConnection::completeConnectionString()
	{
		sal_Int32 nPort;

		nPort = m_socket.getPeerPort();

		OUStringBuffer buf( 256 );
		buf.appendAscii( ",peerPort=" );
		buf.append( (sal_Int32) nPort );
		buf.appendAscii( ",peerHost=" );
		buf.append( m_socket.getPeerHost() );

		buf.appendAscii( ",localPort=" );
		buf.append( (sal_Int32) nPort );
		buf.appendAscii( ",localHost=" );
		buf.append( m_socket.getLocalHost( ) );

		m_sDescription += buf.makeStringAndClear();
	}

	sal_Int32 SocketConnection::read( Sequence < sal_Int8 > & aReadBytes , sal_Int32 nBytesToRead )
	{
		if( ! m_nStatus )
		{
			notifyListeners(this, &_started, callStarted);

			if( aReadBytes.getLength() != nBytesToRead )
			{
				aReadBytes.realloc( nBytesToRead );
			}
			sal_Int32 i = m_socket.read( aReadBytes.getArray()  , aReadBytes.getLength() );

			if(i != nBytesToRead && m_socket.getError() != osl_Socket_E_None)
			{
				OUString message(RTL_CONSTASCII_USTRINGPARAM("ctr_socket.cxx:SocketConnection::read: error - "));
				message += m_socket.getErrorAsString();

				IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));

				Any any;
				any <<= ioException;

				notifyListeners(this, &_error, callError(any));

				throw ioException;
			}

			return i;
		}
		else
		{
			OUString message(RTL_CONSTASCII_USTRINGPARAM("ctr_socket.cxx:SocketConnection::read: error - connection already closed"));

			IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));

			Any any;
			any <<= ioException;

			notifyListeners(this, &_error, callError(any));

			throw ioException;
		}
	}

	void SocketConnection::write( const Sequence < sal_Int8 > &seq )
	{
		if( ! m_nStatus )
		{
			if( m_socket.write( seq.getConstArray() , seq.getLength() ) != seq.getLength() )
			{
				OUString message(RTL_CONSTASCII_USTRINGPARAM("ctr_socket.cxx:SocketConnection::write: error - "));
				message += m_socket.getErrorAsString();

				IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));

				Any any;
				any <<= ioException;

				notifyListeners(this, &_error, callError(any));

				throw ioException;
			}
		}
		else
		{
			OUString message(RTL_CONSTASCII_USTRINGPARAM("ctr_socket.cxx:SocketConnection::write: error - connection already closed"));

			IOException ioException(message, Reference<XInterface>(static_cast<XConnection *>(this)));

			Any any;
			any <<= ioException;

			notifyListeners(this, &_error, callError(any));

			throw ioException;
		}
	}

	void SocketConnection::flush( )
	{

	}

	void SocketConnection::close()
	{
			// ensure that close is called only once
		if( 1 == osl_incrementInterlockedCount( (&m_nStatus) ) )
		{
			m_socket.shutdown();
			notifyListeners(this, &_closed, callClosed);
		}
	}

	OUString SocketConnection::getDescription()
	{
		return m_sDescription;
	}


	// XConnectionBroadcaster
	void SAL_CALL SocketConnection::addStreamListener(const Reference<XStreamListener> & aListener)
	{
		MutexGuard guard(_mutex);

		_listeners.insert(aListener);
	}

	void SAL_CALL SocketConnection::removeStreamListener(const Reference<XStreamListener> & aListener)
	{
		MutexGuard guard(_mutex);

		_listeners.erase(aListener);
	}
}