/**************************************************************
 *
 * 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_cppu.hxx"

#include "osl/mutex.hxx"
#include "osl/thread.h"
#include "uno/dispatcher.h"
#include "typelib/typedescription.hxx"
#include "cppu/helper/purpenv/Environment.hxx"
#include "cppu/helper/purpenv/Mapping.hxx"
#include "cppu/EnvDcp.hxx"
#include "rtl/logfile.hxx"
#include "uno/environment.hxx"
#include <com/sun/star/uno/Type.hxx>
#include <hash_map>
#include <memory>

namespace
{
class LogBridge : public cppu::Enterable
{
	osl::Mutex          m_mutex;
	sal_Int32           m_count;
	oslThreadIdentifier m_threadId;

	virtual  ~LogBridge(void);

public:
	explicit LogBridge(void);

	virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam);
	virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list * pParam);

	virtual void v_enter(void);
	virtual void v_leave(void);

	virtual int  v_isValid(rtl::OUString * pReason);
};

LogBridge::LogBridge(void)
	: m_count   (0)
	  ,m_threadId(0)
{
}

LogBridge::~LogBridge(void)
{
	OSL_ASSERT(m_count >= 0);
}

void LogBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam)
{
	enter();
    pCallee(pParam);
	leave();
}

void LogBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list * pParam)
{
	OSL_ASSERT(m_count > 0);

	-- m_count;
	pCallee(pParam);
	++ m_count;

	if (!m_threadId)
		m_threadId = osl_getThreadIdentifier(NULL);
}

void LogBridge::v_enter(void)
{
	m_mutex.acquire();

	OSL_ASSERT(m_count >= 0);

	if (m_count == 0)
		m_threadId = osl_getThreadIdentifier(NULL);

	++ m_count;
}

void LogBridge::v_leave(void)
{
	OSL_ASSERT(m_count > 0);

	-- m_count;
	if (!m_count)
		m_threadId = 0;


	m_mutex.release();
}

int LogBridge::v_isValid(rtl::OUString * pReason)
{
	int result = 1;

	result = m_count > 0;
	if (!result)
		*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("not entered"));

	else
	{
		result = m_threadId == osl_getThreadIdentifier(NULL);

		if (!result)
			*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("wrong thread"));
	}

	if (result)
		*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("OK"));

	return result;
}

    void traceValue(typelib_TypeDescriptionReference* _pTypeRef,void* pArg)
    {
        switch(_pTypeRef->eTypeClass)
        {
            case typelib_TypeClass_STRING:
                {
                    const ::rtl::OString sValue( ::rtl::OUStringToOString(*static_cast< ::rtl::OUString*>(pArg),osl_getThreadTextEncoding()));
                    rtl_logfile_trace( "%s", sValue.getStr());
                }
                break;
            case typelib_TypeClass_BOOLEAN:
                rtl_logfile_trace( "%d", *static_cast<sal_Bool*>(pArg));
                break;
            case typelib_TypeClass_BYTE:
                rtl_logfile_trace( "%d", *static_cast<sal_Int8*>(pArg));
                break;
            case typelib_TypeClass_CHAR:
                rtl_logfile_trace( "%c", *static_cast<sal_Char*>(pArg));
                break;
            case typelib_TypeClass_SHORT:
            case typelib_TypeClass_UNSIGNED_SHORT:
                rtl_logfile_trace( "%d", *static_cast<sal_Int16*>(pArg));
                break;
            case typelib_TypeClass_LONG:
            case typelib_TypeClass_UNSIGNED_LONG:
            case typelib_TypeClass_ENUM:
                rtl_logfile_trace( "%d", *static_cast<sal_Int32*>(pArg));
                break;
            case typelib_TypeClass_HYPER:
            case typelib_TypeClass_UNSIGNED_HYPER:
                rtl_logfile_trace( "%d", *static_cast<sal_Int64*>(pArg));
                break;
            case typelib_TypeClass_FLOAT:
                rtl_logfile_trace( "%f", *static_cast<float*>(pArg));
                break;
            case typelib_TypeClass_DOUBLE:
                rtl_logfile_trace( "%f", *static_cast<double*>(pArg));
                break;
            case typelib_TypeClass_TYPE:
                {
                    const ::rtl::OString sValue( ::rtl::OUStringToOString(((com::sun::star::uno::Type*)pArg)->getTypeName(),osl_getThreadTextEncoding()));
                    rtl_logfile_trace( "%s", sValue.getStr());
                }
                break;
            case typelib_TypeClass_ANY:
                if ( static_cast<uno_Any*>(pArg)->pData )
                    traceValue(static_cast<uno_Any*>(pArg)->pType,static_cast<uno_Any*>(pArg)->pData);
                else
                    rtl_logfile_trace( "void");
                break;
            case typelib_TypeClass_EXCEPTION:
                rtl_logfile_trace( "exception");
                break;
            case typelib_TypeClass_INTERFACE:
                {
                    const ::rtl::OString sValue( ::rtl::OUStringToOString(_pTypeRef->pTypeName,osl_getThreadTextEncoding()));
                    rtl_logfile_trace( "%s 0x%p", sValue.getStr(),pArg);
                }
                break;
            case typelib_TypeClass_VOID:
                rtl_logfile_trace( "void");
                break;
            default:
                rtl_logfile_trace( "0x%p", pArg);
                break;
        } // switch(pParams[i].pTypeRef->eTypeClass)
    }
}

void LogProbe(
	bool                                pre,
	void                              * /*pThis*/,
	void                              * /*pContext*/,
	typelib_TypeDescriptionReference  * pReturnTypeRef,
	typelib_MethodParameter           * pParams,
	sal_Int32                           nParams,
	typelib_TypeDescription     const * pMemberType,
	void                              * pReturn,
	void                              * pArgs[],
	uno_Any                          ** ppException )
{
    static ::std::auto_ptr< ::rtl::Logfile> pLogger;
    ::rtl::OString sTemp;
    if ( pMemberType && pMemberType->pTypeName )
        sTemp = ::rtl::OUStringToOString(pMemberType->pTypeName,RTL_TEXTENCODING_ASCII_US);
    if ( pre  )
    {
        rtl_logfile_longTrace( "{ LogBridge () %s", sTemp.getStr() );
        if ( nParams )
        {
            rtl_logfile_trace( "\n| : ( LogBridge ");
            for(sal_Int32 i = 0;i < nParams;++i)
            {
                if ( i > 0 )
                    rtl_logfile_trace( ",");
                traceValue(pParams[i].pTypeRef,pArgs[i]);

            }
            rtl_logfile_trace( ")");
        } // if ( nParams )
        rtl_logfile_trace( "\n");
    }
    else if ( !pre )
    {
        rtl_logfile_longTrace( "} LogBridge () %s",sTemp.getStr());
        if ( ppException && *ppException )
        {
            rtl_logfile_trace( " exception occurred : ");
    		typelib_TypeDescription * pElementTypeDescr = 0;
            TYPELIB_DANGER_GET( &pElementTypeDescr, (*ppException)->pType );
            const ::rtl::OString sValue( ::rtl::OUStringToOString(pElementTypeDescr->pTypeName,osl_getThreadTextEncoding()));
            rtl_logfile_trace( "%s", sValue.getStr());
            TYPELIB_DANGER_RELEASE( pElementTypeDescr );
        }
        else if ( pReturnTypeRef )
        {
            rtl_logfile_trace( " return : ");
            traceValue(pReturnTypeRef,pReturn);
        } // if ( pReturn && pReturnTypeRef )

        rtl_logfile_trace( "\n");
    }
}

extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_initEnvironment(uno_Environment * pEnv)
	SAL_THROW_EXTERN_C()
{
    cppu::helper::purpenv::Environment_initWithEnterable(pEnv, new LogBridge());
}

extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_ext_getMapping(uno_Mapping     ** ppMapping,
								   uno_Environment  * pFrom,
								   uno_Environment  * pTo )
{
	cppu::helper::purpenv::createMapping(ppMapping, pFrom, pTo,LogProbe);
}