/**************************************************************
 * 
 * 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>
#include <../tools/seterror.hxx>

//----------------------------------------------------------
#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 BOOL RemoveCompleteDirectory( std::_tstring sPath )
{
    bool bDirectoryRemoved = true;

    std::_tstring mystr;
    std::_tstring sPattern = sPath + TEXT("\\") + TEXT("*.*");
    WIN32_FIND_DATA aFindData;

    // Finding all content in sPath

    HANDLE hFindContent = FindFirstFile( sPattern.c_str(), &aFindData );

    if ( hFindContent != INVALID_HANDLE_VALUE )
    {
        bool fNextFile = false;
        std::_tstring sCurrentDir = TEXT(".");
        std::_tstring sParentDir = TEXT("..");

        do
        {
            std::_tstring sFileName = aFindData.cFileName;

            mystr = "Current short file: " + sFileName;
            // MessageBox(NULL, mystr.c_str(), "Current Content", MB_OK);
        
            if (( strcmp(sFileName.c_str(),sCurrentDir.c_str()) != 0 ) &&
                ( strcmp(sFileName.c_str(),sParentDir.c_str()) != 0 ))
            {
                std::_tstring sCompleteFileName = sPath + TEXT("\\") + sFileName;

                if ( aFindData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY )
                {
                    bool fSuccess = RemoveCompleteDirectory(sCompleteFileName);
                    if ( fSuccess )
                    {
                        mystr = "Successfully removed content of dir " + sCompleteFileName;
                        // MessageBox(NULL, mystr.c_str(), "Removed Directory", MB_OK);
                    }
                    else
                    {
                        mystr = "An error occurred during removing content of " + sCompleteFileName;
                        // MessageBox(NULL, mystr.c_str(), "Error removing directory", MB_OK);
                    }
                }
                else
                {
                    bool fSuccess = DeleteFile( sCompleteFileName.c_str() );
                    if ( fSuccess )
                    {
                        mystr = "Successfully removed file " + sCompleteFileName;
                        // MessageBox(NULL, mystr.c_str(), "Removed File", MB_OK);
                    }
                    else
                    {
                        mystr = "An error occurred during removal of file " + sCompleteFileName;
                        // MessageBox(NULL, mystr.c_str(), "Error removing file", MB_OK);
                    }
                }
            }

            fNextFile = FindNextFile( hFindContent, &aFindData );

        } while ( fNextFile );

        FindClose( hFindContent );

        // empty directory can be removed now
        // RemoveDirectory is only successful, if the last handle to the directory is closed
        // -> first removing content -> closing handle -> remove empty directory

        bool fRemoveDirSuccess = RemoveDirectory(sPath.c_str());

        if ( fRemoveDirSuccess )
        {
            mystr = "Successfully removed dir " + sPath;
            // MessageBox(NULL, mystr.c_str(), "Removed Directory", MB_OK);
        }
        else
        {
            mystr = "An error occurred during removal of empty directory " + sPath;
            // MessageBox(NULL, mystr.c_str(), "Error removing directory", MB_OK);
            bDirectoryRemoved = false;
        }
    }
    
    return bDirectoryRemoved;
}



extern "C" UINT __stdcall RenamePrgFolder( MSIHANDLE handle )
{
    std::_tstring sOfficeInstallPath = GetMsiProperty(handle, TEXT("INSTALLLOCATION"));

    std::_tstring sRenameSrc = sOfficeInstallPath + TEXT("program");
    std::_tstring sRenameDst = sOfficeInstallPath + TEXT("program_old");

//    MessageBox(NULL, sRenameSrc.c_str(), "INSTALLLOCATION", MB_OK);

    bool bSuccess = MoveFile( sRenameSrc.c_str(), sRenameDst.c_str() );
    if ( !bSuccess )
    {
        TCHAR sAppend[2] = TEXT("0");
        for ( int i = 0; i < 10; i++ )
        {
            sRenameDst = sOfficeInstallPath + TEXT("program_old") + sAppend;
            bSuccess = MoveFile( sRenameSrc.c_str(), sRenameDst.c_str() );
            if ( bSuccess )
                break;
            sAppend[0] += 1;
        }
    }

#if 0
    if ( !bSuccess )
        MessageBox(NULL, "Renaming folder failed", "RenamePrgFolder", MB_OK);
    else
        MessageBox(NULL, "Renaming folder successful", "RenamePrgFolder", MB_OK);
#endif

    return ERROR_SUCCESS;
}

extern "C" UINT __stdcall RemovePrgFolder( MSIHANDLE handle )
{
    std::_tstring sOfficeInstallPath = GetMsiProperty(handle, TEXT("INSTALLLOCATION"));
    std::_tstring sRemoveDir = sOfficeInstallPath + TEXT("program_old");

//    MessageBox(NULL, sRemoveDir.c_str(), "REMOVING OLD DIR", MB_OK);
    
    bool bSuccess = RemoveCompleteDirectory( sRemoveDir );

    TCHAR sAppend[2] = TEXT("0");
    for ( int i = 0; i < 10; i++ )
    {
        sRemoveDir = sOfficeInstallPath + TEXT("program_old") + sAppend;
        bSuccess = RemoveCompleteDirectory( sRemoveDir );
        sAppend[0] += 1;
    }

#if 0
    if ( bSuccess )
        MessageBox(NULL, "Removing folder successful", "RemovePrgFolder", MB_OK);
    else
        MessageBox(NULL, "Removing folder failed", "RemovePrgFolder", MB_OK);
#endif

    return ERROR_SUCCESS;
}