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



#define _WIN32_WINNT 0x0401

#ifdef _MSC_VER
#pragma warning(push, 1) /* disable warnings within system headers */
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <msiquery.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif

#include <malloc.h>
#include <assert.h>

#ifdef UNICODE
#define _UNICODE
#define _tstring	wstring
#else
#define _tstring	string
#endif
#include <tchar.h>
#include <string>
#include <queue>
#include <stdio.h>
#include <strsafe.h>

#include <systools/win32/uwinapi.h>

//----------------------------------------------------------
#ifdef DEBUG
inline void OutputDebugStringFormat( LPCSTR pFormat, ... )
{
	CHAR    buffer[1024];
	va_list args;

	va_start( args, pFormat );
	StringCchVPrintfA( buffer, sizeof(buffer), pFormat, args );
	OutputDebugStringA( buffer );
}
#else
static inline void OutputDebugStringFormat( LPCSTR, ... )
{
}
#endif

static std::_tstring GetMsiProperty( MSIHANDLE handle, const std::_tstring& sProperty )
{
    std::_tstring result;
    TCHAR szDummy[1] = TEXT("");
    DWORD nChars = 0;

    if ( MsiGetProperty( handle, sProperty.c_str(), szDummy, &nChars ) == ERROR_MORE_DATA )
    {
        DWORD nBytes = ++nChars * sizeof(TCHAR);
        LPTSTR buffer = reinterpret_cast<LPTSTR>(_alloca(nBytes));
        ZeroMemory( buffer, nBytes );
        MsiGetProperty(handle, sProperty.c_str(), buffer, &nChars);
        result = buffer;
    }

    return result;
}

static void SetMsiProperty( MSIHANDLE handle, const std::_tstring& sProperty )
{
    MsiSetProperty( handle, sProperty.c_str(), TEXT("1") );
}

extern "C" UINT __stdcall CheckPatchList( MSIHANDLE handle )
{
    std::_tstring sPatchList = GetMsiProperty( handle, TEXT("PATCH") );
    std::_tstring sRequiredPatch = GetMsiProperty( handle, TEXT("PREREQUIREDPATCH") );

    OutputDebugStringFormat( "CheckPatchList called with PATCH=%s and PRQ= %s\n", sPatchList.c_str(), sRequiredPatch.c_str() );

    if ( ( sPatchList.length() != 0 ) && ( sRequiredPatch.length() != 0 ) )
    {
        if ( _tcsstr( sPatchList.c_str(), sRequiredPatch.c_str() ) )
        {
            SetMsiProperty( handle, TEXT("IGNOREPREREQUIREDPATCH") );
            OutputDebugStringFormat( "Set Property IgnorePrerequiredPatch!\n" );
        }
    }
    return ERROR_SUCCESS;
}