/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include "CCPixIdxDb.h"

#include "CSearchDocument.h"

#include "common.h"

#include "SearchServerLogger.h"

#include "CCPixAsyncronizer.h"

#include <f32file.h>

#include "SearchServerConfiguration.h"

#include "SearchServerHelper.h"

namespace {

void DumpDocument(const CSearchDocument& aDocument)

	{

#ifdef CPIX_LOGGING_ENABLED

	CPIXLOGSTRING2("DumpDocument START _docuid=%S", &(aDocument.Id()));

	_LIT(KDocUid, CPIX_DOCUID_FIELD);

	const TInt fieldCount = aDocument.FieldCount();

	for (TInt i = 0; i < fieldCount; i++)

		{

		const CDocumentField& field = aDocument.Field(i);

		if (field.Name() == KDocUid())

			{

			continue; // lets not print this information out twice.

			}

		CPIXLOGSTRING3("DumpDocument FieldName=%S,Value=%S", &(field.Name()), &(field.Value()));

		}

	CPIXLOGSTRING2("DumpDocument END _docuid=%S", &(aDocument.Id()));

#endif // CPIX_LOGGING_ENABLED

	}

/**

 * InitParams destroyer for TCleanupItem

 * @param aCpixInitParams CPix related init parameter

 */

void CpixInitParamsDestroyer(TAny* aCpixInitParams)

    {

    cpix_InitParams_destroy( static_cast<cpix_InitParams*>( aCpixInitParams ) );

    }

/**

 * cpix_Document destroyer for TCleanupItem

 * @param aCpixDocument CPix document

 */

void CpixDocumentDestroyer(TAny* aCpixDocument)

    {

    cpix_Document_destroy( static_cast<cpix_Document*>( aCpixDocument ) );

    }

/**

 * cpix_DocFieldEnum destroyer for TCleanupItem

 * @param aCpixDocFieldEnum CPix document

 */

void CpixDocFieldEnumDestroyer(TAny* aCpixDocFieldEnum)

	{

	cpix_DocFieldEnum_destroy( static_cast<cpix_DocFieldEnum*>( aCpixDocFieldEnum ) );

	}

} // namespace

CCPixIdxDb* CCPixIdxDb::NewL()

	{

	CCPixIdxDb* self = CCPixIdxDb::NewLC();

	CleanupStack::Pop(self);

	return self;

	}

CCPixIdxDb* CCPixIdxDb::NewLC()

	{

	CCPixIdxDb* self = new (ELeave) CCPixIdxDb();

	CleanupStack::PushL(self);

	self->ConstructL();

	return self;

	}

CCPixIdxDb::CCPixIdxDb()

    : iIsPending(EFalse)

    {

    }

CCPixIdxDb::~CCPixIdxDb()

	{

	delete iAsyncronizer;

	delete iBaseAppClass;

	cpix_IdxDb_releaseDb(iIdxDb);

	cpix_Analyzer_destroy(iAnalyzer);

	}

void CCPixIdxDb::ConstructL()

	{

	iAsyncronizer = CCPixAsyncronizer::NewL();

	}

// Cancel any incomplete asyncronous operation

void CCPixIdxDb::CancelAll(const RMessage2& aMessage)

	{

    // Do nothing here. Wait until asynchronous functions

    // completes and complete request after that.

    iAsyncronizer->CancelWhenDone(aMessage);

	}

void CCPixIdxDb::CompletionCallback(void *aCookie, cpix_JobId aJobId)

	{

	CCPixIdxDb* object = (CCPixIdxDb*)aCookie;

	// Sanity check

	if (object == NULL || 

		object->iPendingJobId != aJobId)

		return;

	// Call the asyncronizers completion code

	CCPixAsyncronizer* asyncronizer = object->iAsyncronizer;

	asyncronizer->CompletionCallback();

	}

void CCPixIdxDb::InitializeL()

	{

#ifdef CPIX_LOGGING_ENABLED

	_LIT(KCPixLogDirectory, "c:\\logs\\CPix\\OpenC\\");

	const char* CPIX_LOG_FILE = "c:\\logs\\CPix\\OpenC\\libcpix";

	const TInt KLogSizeLimit = 400 * 1024;

	const TInt KLogSizeCheckRecurrency = 10; 

#endif // CPIX_LOGGING_ENABLED

	RFs fs;

	User::LeaveIfError(fs.Connect());

	CleanupClosePushL(fs);

#ifdef CPIX_LOGGING_ENABLED

	TInt err = fs.MkDirAll(KCPixLogDirectory);

	if ( err != KErrNone && err != KErrAlreadyExists )

		{

		User::Leave(err);

		}

#endif // CPIX_LOGGING_ENABLED	

	TBuf8<30> registryPath;

	fs.CreatePrivatePath(EDriveC);

	TFileName pathWithoutDrive;

	fs.PrivatePath(pathWithoutDrive);

	registryPath.Append(_L("C:"));

	registryPath.Append(pathWithoutDrive);

	cpix_Result result;

        cpix_InitParams

            * initParams = cpix_InitParams_create(&result);

        CleanupStack::PushL( TCleanupItem (CpixInitParamsDestroyer, initParams) );

        SearchServerHelper::CheckCpixErrorL(&result,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setCpixDir(initParams,

                                   reinterpret_cast<const char*>( registryPath.PtrZ() ));

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setMaxIdleSec(initParams,

                                      IDXDB_MAXIDLE_SEC);

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setQryThreadPriorityDelta(initParams,

                                                  QRY_THREAD_PRIORITY_DELTA);

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setCluceneLockDir(initParams,

                                       "C:\\Private\\2001f6f7\\clucenelockdir\\");

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

#ifdef CPIX_LOGGING_ENABLED

        cpix_InitParams_setLogFileBase(initParams,

                                       CPIX_LOG_FILE);

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setLogSizeLimit(initParams,

                                        KLogSizeLimit);

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

        cpix_InitParams_setLogSizeCheckRecurrency(initParams,

                                                  KLogSizeCheckRecurrency);

        SearchServerHelper::CheckCpixErrorL(initParams,

                                            KErrCPixInitializationFailed);

#endif

        cpix_init(&result,

                  initParams);

        SearchServerHelper::CheckCpixErrorL(&result,

                                            KErrCPixInitializationFailed);

        CleanupStack::PopAndDestroy(initParams);

#ifdef CPIX_LOGGING_ENABLED

#ifdef CPIX_OPENC_LOGDBG

    // Enable OpenC logging

    cpix_setLogLevel(CPIX_LL_DEBUG);

#endif

#endif // CPIX_LOGGING_ENABLED

	CleanupStack::PopAndDestroy(); //fs

	}

void CCPixIdxDb::Shutdown()

	{

	cpix_shutdown();

	}

void CCPixIdxDb::OpenDatabaseL(const TDesC& aBaseAppClass)

	{

	// Allocate base app class (space for zero terminated)

	cpix_IdxDb_releaseDb( iIdxDb );

	iIdxDb = NULL; 

	delete iBaseAppClass;

	iBaseAppClass = NULL;	

	iBaseAppClass = HBufC8::NewL(aBaseAppClass.Size() + 1);

	TPtr8 baseAppClassPtr = iBaseAppClass->Des();

	baseAppClassPtr.Copy(aBaseAppClass);

    // Try to open database

    cpix_Result result;

    iIdxDb = cpix_IdxDb_openDb(

    		       &result,

				   reinterpret_cast<const char*>( baseAppClassPtr.PtrZ() ),

				   cpix_IDX_OPEN);

    SearchServerHelper::CheckCpixErrorL(&result, KErrCannotOpenDatabase);

	// Set default analyzer

	SetAnalyzerL(TPtrC16((TUint16*)CPIX_ANALYZER_DEFAULT)); 

	}

TBool CCPixIdxDb::IsOpen()

	{

	return (iIdxDb != NULL);

	}

TPtrC8 CCPixIdxDb::BaseAppClass()

	{

	TPtrC8 ptr;

	ptr.Set( *iBaseAppClass );

	return ptr;

	}

void CCPixIdxDb::AddL(const CSearchDocument& aDocument, MCPixAsyncronizerObserver* aObserver, const RMessage2& aMessage)

	{	

    if (iIsPending)

        User::Leave(KErrInUse);

    cpix_Document* document = NULL;

	document = ConvertToCpixDocumentLC(aDocument);

	CPIXLOGSTRING("CCPixIdxDb::AddL");

	DumpDocument(aDocument);

	iPendingJobId = cpix_IdxDb_asyncAdd(iIdxDb, document, iAnalyzer, (void*)this, &CompletionCallback);

	CleanupStack::PopAndDestroy(document);

	SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrCannotAddDocument);

    iIsPending = ETrue;

	iAsyncronizer->Start(ECPixTaskTypeAdd, aObserver, aMessage);

	}

void CCPixIdxDb::AddCompleteL()

	{

    iIsPending = EFalse;

	cpix_IdxDb_asyncAddResults(iIdxDb, iPendingJobId);

	SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrCannotAddDocument);

	}

void CCPixIdxDb::UpdateL(const CSearchDocument& aDocument, MCPixAsyncronizerObserver* aObserver, const RMessage2& aMessage)

	{

    if (iIsPending)

        User::Leave(KErrInUse);

	cpix_Document* document = NULL;	

	document = ConvertToCpixDocumentLC(aDocument);

	CPIXLOGSTRING("CCPixIdxDb::UpdateL");

	DumpDocument(aDocument);

    iPendingJobId = cpix_IdxDb_asyncUpdate(iIdxDb, document, iAnalyzer, (void*)this, &CompletionCallback);

	CleanupStack::PopAndDestroy(document);

	SearchServerHelper::CheckCpixErrorL(iIdxDb,KErrCannotUpdateDocument);

    iIsPending = ETrue;

    iAsyncronizer->Start(ECPixTaskTypeUpdate, aObserver, aMessage);

	}

void CCPixIdxDb::UpdateCompleteL()

	{

    iIsPending = EFalse;

	cpix_IdxDb_asyncUpdateResults(iIdxDb, iPendingJobId);

	SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrCannotUpdateDocument);

	}

void CCPixIdxDb::DeleteDocumentsL(const TDesC& aDocUid, MCPixAsyncronizerObserver* aObserver, const RMessage2& aMessage)

	{

    if (iIsPending)

        User::Leave(KErrInUse);

	CPIXLOGSTRING2("CCPixIdxDb::DeleteDocumentsL aDocUid=%S", &aDocUid);

	HBufC* docUid = HBufC::NewLC(aDocUid.Length() + 1);

	TPtr docUidPtr = docUid->Des();

	docUidPtr.Copy(aDocUid);	

	const wchar_t* cDocumentId = reinterpret_cast<const wchar_t*>(docUidPtr.PtrZ());

    iIsPending = ETrue;

    iPendingJobId = cpix_IdxDb_asyncDeleteDocuments(iIdxDb, cDocumentId, (void*)this, &CompletionCallback);

    SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrCannotDeleteDocument);

	CleanupStack::PopAndDestroy(docUid);	 

    iAsyncronizer->Start(ECPixTaskTypeDelete, aObserver, aMessage);

	}

void CCPixIdxDb::DeleteDocumentsCompleteL()

	{

    iIsPending = EFalse;

    cpix_IdxDb_asyncDeleteDocumentsResults(iIdxDb, iPendingJobId);

	SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrCannotDeleteDocument);

	}

void CCPixIdxDb::FlushCompleteL()

	{

    iIsPending = EFalse;

    cpix_IdxDb_asyncFlushResults(iIdxDb, iPendingJobId);

	SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrDatabaseFlushFailed);

	}

void CCPixIdxDb::SetAnalyzerL(const TDesC& aAnalyzer)

	{

	cpix_Analyzer_destroy( iAnalyzer ); 

	iAnalyzer = NULL; 

	// Create analyzer

	cpix_Result result;

	HBufC* analyzer = HBufC::NewLC(aAnalyzer.Length() + 1);

	TPtr analyzerPtr = analyzer->Des();

	analyzerPtr.Copy(aAnalyzer);

	const wchar_t* cAnalyzer = reinterpret_cast<const wchar_t*>(analyzerPtr.PtrZ());

	iAnalyzer = cpix_Analyzer_create(&result, cAnalyzer);

	CleanupStack::PopAndDestroy( analyzer ); 

	if ( !iAnalyzer || cpix_Failed( &result ) )

		{

		SearchServerHelper::LogErrorL(*result.err_);

		cpix_ClearError(&result);

		User::Leave(KErrCannotCreateAnalyzer);

		}

	}

void CCPixIdxDb::ResetL()

	{

    if (iIsPending)

        User::Leave(KErrInUse);

	cpix_IdxDb_releaseDb(iIdxDb);

	iIdxDb = NULL;

	cpix_Result result;

	iIdxDb = cpix_IdxDb_openDb( &result, 

			reinterpret_cast<const char*>( iBaseAppClass->Des().PtrZ() ), cpix_IDX_CREATE );

	// Leave if operation failed

	SearchServerHelper::CheckCpixErrorL(&result, KErrCannotOpenDatabase);

	}

void CCPixIdxDb::FlushL(MCPixAsyncronizerObserver* aObserver, const RMessage2& aMessage)

    {   

    if (iIsPending)

        User::Leave(KErrInUse);

    iPendingJobId = cpix_IdxDb_asyncFlush(iIdxDb, (void*)this, &CompletionCallback);

    SearchServerHelper::CheckCpixErrorL(iIdxDb, KErrDatabaseFlushFailed);

    iIsPending = ETrue;

    iAsyncronizer->Start(ECPixTaskTypeFlush, aObserver, aMessage);

    }

const char* CCPixIdxDb::GetFieldCStrLC(const CSearchDocument& aDocument, const TDesC& aFieldName )

	{

	const CDocumentField* field = aDocument.Field( aFieldName );

	if ( field )

		{

		HBufC8* fieldValue = HBufC8::NewLC( field->Value().Size() + 1);

		TPtr8 fieldValuePtr = fieldValue->Des();

		fieldValuePtr.Copy( field->Value() );	

		return reinterpret_cast<const char*>(fieldValuePtr.PtrZ());

		}

	else 

		{

		HBufC::NewLC( 1 ); // populate cleanup

		}

	return 0;

	}

const wchar_t* CCPixIdxDb::GetFieldWideCStrLC(const CSearchDocument& aDocument, const TDesC& aFieldName )

 	{

	const CDocumentField* field = aDocument.Field( aFieldName );

	if ( field )

		{

		HBufC* fieldValue = HBufC::NewLC( field->Value().Size() + 1);

		TPtr fieldValuePtr = fieldValue->Des();

		fieldValuePtr.Copy( field->Value() );	

		return reinterpret_cast<const wchar_t*>(fieldValuePtr.PtrZ());

		}

	else 

		{

		HBufC::NewLC( 1 ); // populate cleanup

		}

	return 0;

	}

cpix_Document* CCPixIdxDb::ConvertToCpixDocumentLC(const CSearchDocument& aDocument)

	{	

	cpix_Document* doc = NULL; // to return;  

	const wchar_t* cDocumentId = GetFieldWideCStrLC( aDocument, TPtrC((TUint16*)LCPIX_DOCUID_FIELD) ); 

	const char* cDocumentAppClass = GetFieldCStrLC( aDocument, TPtrC((TUint16*)LCPIX_APPCLASS_FIELD) ); 

	const wchar_t* cDocumentExcerpt = GetFieldWideCStrLC( aDocument, TPtrC((TUint16*)LCPIX_EXCERPT_FIELD) );

	const wchar_t* cDocumentMimeType = GetFieldWideCStrLC( aDocument, TPtrC((TUint16*)LCPIX_MIMETYPE_FIELD) );

	cpix_Result result;

	// ownership of cDocumentId is not transferred

	doc = cpix_Document_create(&result,

							   cDocumentId, 

							   cDocumentAppClass, 

							   cDocumentExcerpt, 

							   cDocumentMimeType);

	SearchServerHelper::CheckCpixErrorL(&result, KErrCannotCreateDocument);

	CleanupStack::PopAndDestroy(4);

	if (!doc)

		{

		SearchServerHelper::LogErrorL(*result.err_);

		cpix_ClearError(doc);

		User::Leave(KErrCannotCreateDocument);

		}

	// document created, push to cleanup stack.

	CleanupStack::PushL( TCleanupItem (CpixDocumentDestroyer, doc) );

	// Do the necessary magic, to copy the system field boosts 

	// from S60 document into CPix document

	cpix_Document_setBoost( doc, aDocument.Boost() );

	SearchServerHelper::CheckCpixErrorL(doc, KErrCannotCreateDocumentField);

	cpix_DocFieldEnum* fields = cpix_Document_fields( doc );

	// push to cleanup stack.

	CleanupStack::PushL( TCleanupItem (CpixDocFieldEnumDestroyer, fields) );

	if ( !fields || cpix_Failed( doc ) ) 

		{

		SearchServerHelper::LogErrorL(*doc->err_);

		cpix_ClearError(doc);

		User::Leave(KErrCannotCreateDocumentField);

		}

	while ( cpix_DocFieldEnum_hasMore( fields ) ) 

		{

		cpix_Field sysField;

		cpix_DocFieldEnum_next( fields, &sysField );

		if ( cpix_Failed( fields ) ) 

			{

			SearchServerHelper::LogErrorL(*fields->err_);

			cpix_ClearError(fields);

			User::Leave(KErrCannotCreateDocumentField);

			}

		const wchar_t* name = cpix_Field_name( &sysField ); 

		SearchServerHelper::CheckCpixErrorL(&sysField, KErrCannotCreateDocumentField);

		TPtrC16 nameDesc;

		nameDesc.Set( reinterpret_cast<const TUint16*>( name ), 

					  wcslen( name ) );

		const CDocumentField* field = aDocument.Field( nameDesc );

		if ( field )

			{

			cpix_Field_setBoost( &sysField, field->Boost() );

			SearchServerHelper::CheckCpixErrorL(&sysField, KErrCannotCreateDocumentField);

			}

		}

	CleanupStack::PopAndDestroy(fields);

	// Copy rest of the fiels

	// 

	for (TInt i = 0; i < aDocument.FieldCount(); i++)

		{

		const CDocumentField& srcField = aDocument.Field(i);

		if (    srcField.Name() == TPtrC((TUint16*)LCPIX_DOCUID_FIELD)