/*

* 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 "randomtest.h"

#include "CPixdoc.h"

#include <sstream>

#include <time.h>

using namespace std;

using namespace Itk;

SuiteTester* CreateSuiteTesterRandom()

	{

	// "all/random"

	RandomTest * idxDbTest = new RandomTest;

	ContextTester * random = new ContextTester("random", idxDbTest);

	random->add( "AddingDeleting", idxDbTest,

	random->add( "AddingDeletingAll", idxDbTest,

	random->add( "Persistence", idxDbTest,

	return random;

	}

RandomTest::RandomTest()

: // core

  randomSeed_(0),

  idxUtil_(NULL), 

  testCorpus_(DEFAULT_TEST_CORPUS_PATH),

  // text processing

  analyzer_(NULL),

  uidQueryParser_(NULL),

  contentQueryParser_(NULL),

  // tracing

  indexed_(),

  tracedTerms_(),

  tracedTermsFreq_()

	{

	}

RandomTest::~RandomTest()

	{

	}

void RandomTest::setup() throw (Itk::PanicExc)

{

	cpix_Result

		result;

        cpix_IdxDb_dbgScrapAll(&result);

        if (cpix_Failed(&result))

            {

                ITK_PANIC("Could not dbg scrapp all indexes");

            }

	randomSeed_ = (unsigned int)time(0); 

	srandom(randomSeed_);

	idxUtil_ = new SmsIdxUtil; 

	idxUtil_->init( true ); 

	analyzer_ = cpix_CreateSimpleAnalyzer(&result);

	if ( !analyzer_ )

	{

		ITK_PANIC("Analyzer could not be created");

	}

	uidQueryParser_ = cpix_QueryParser_create( &result,

	                                                           LCPIX_DOCUID_FIELD, 

	                                                           analyzer_ );

	if ( !uidQueryParser_)

	{

		ITK_PANIC("Query parser could not be created");

	}

	contentQueryParser_ = cpix_QueryParser_create( &result,

	                                                               LBODY_FIELD, 

	                                                               analyzer_ );

	if ( !contentQueryParser_ )

	{

		ITK_PANIC("Query parser could not be created");

	}

}

void RandomTest::tearDown() throw ()

	{

	delete idxUtil_; 

	cpix_Analyzer_destroy( analyzer_ ); 

	cpix_QueryParser_destroy( uidQueryParser_ ); 

	cpix_QueryParser_destroy( contentQueryParser_ ); 

	}

void * RandomTest::subject()

	{

	return NULL;

	}

int RandomTest::getRandomItem(bool isIndexed)

	{

	if (isIndexed)

		{ // pick indexed one from list

		int i = rand() % indexed_.size();

		for (set<size_t>::iterator itr = indexed_.begin(); itr != indexed_.end(); itr++)

			{

			if (i-- == 0)

				{

				return *itr;

				}

			}

		// TODO: Panic

		return -1;

		}

	else

		{

		while (true)

			{

			int i = rand() % testCorpus_.size();

			if (indexed_.count(i) == 0)

				{

				return i;

				}

			}

		}

	}

//

// TRACING ->

//

void RandomTest::markIndexed(int index, bool indexed)

	{

	if (indexed_.count(index) == 1 && !indexed)

		{

		indexed_.erase(index);

		}

	else if (indexed_.count(index) == 0 && indexed)

		{

		indexed_.insert(index);

		}

	}

bool RandomTest::indexed(int item)

	{

	return indexed_.count(item)==1;

	}

void RandomTest::traceTerm(Itk::TestMgr* , const wchar_t* term)

	{

	tracedTerms_.push_back( wstring( term ) );

	tracedTermsFreq_.push_back( 0 );

	}

void RandomTest::untraceTerm(Itk::TestMgr* , const wchar_t* term)

	{

	int i = 0;

	for (; i < tracedTerms_.size(); i++)

		{

		if ( term == tracedTerms_[i] )

			{

			tracedTerms_.erase( tracedTerms_.begin() + i );

			tracedTermsFreq_.erase( tracedTermsFreq_.begin() + i );

			return;

			}

		}

	ITK_PANIC( "Untracing non-traced term" );

	}

void RandomTest::untraceTerms(Itk::TestMgr* )

	{

	tracedTerms_.empty();

	tracedTermsFreq_.empty();

	}

// Would be useful to get access to the tokenizers

bool RandomTest::isTokenChar(wchar_t character) const 

	{

	// only for ASCII

	if ( character >= 'a' && character <= 'z') 

		{

		return true;

		}

	if ( character >= 'A' && character <= 'Z') 

		{

		return true;

		}

	return false;

	}

bool RandomTest::containsTerm(const std::wstring& content, const std::wstring& term) const

{

	wostringstream tolowcase; 

	for (int i = 0; i < content.size(); i++) {

		wchar_t c = content[i];

		if (c >= 'A' && c <= 'Z') {

			c = (c - 'A' + 'a');

		} 

		tolowcase<<c;

	}

	wstring lowcase( tolowcase.str() ); 

	const wchar_t* lc = lowcase.c_str(); 

	int i = 0; 

	while (true)

	{

		i = lowcase.find( term, i );

		if ( i == string::npos )

		{

			return false;

		}

		// we didn't match e.g. 'hat' from hatchet

		if ((i == 0 || !isTokenChar(lowcase[i-1])) && 

			(i + term.size() >= lowcase.size() || !isTokenChar(lowcase[i+term.length()])))

		{

			return true; 

		}

		i++;

	} 	

}

void RandomTest::incTermFreqs(Itk::TestMgr* /*testMgr*/, const std::wstring& content)

	{

	for (int i = 0; i < tracedTerms_.size(); i++)

		{

		if ( containsTerm( content, tracedTerms_[i] ) ) 

			{

			tracedTermsFreq_[i]++;

			}

		}

	}

void RandomTest::decTermFreqs(Itk::TestMgr* , const std::wstring& content)

	{

	for (int i = 0; i < tracedTerms_.size(); i++)

		{

		if ( containsTerm( content, tracedTerms_[i] ) ) 

			{

			tracedTermsFreq_[i]--;

			}

		}

	}

//

// Indexing & deleting

//

bool RandomTest::tryIndexItem(Itk::TestMgr* testMgr, size_t item)

	{

	wstring id = GetItemId( item );

	wstring content = testCorpus_.item( item );

	const wchar_t

	* fields[4];

	fields[0] = L"+3585553412"; // to

	fields[1] = L"+3585559078"; // from

	fields[2] = L"inbox"; // folder

	fields[3] = content.c_str();// body

	cpix_IdxDb_add2( idxUtil_->idxDb(),

					 idxUtil_->schemaId(),

					 id.c_str(),

					 SMSAPPCLASS,

					 content.c_str(),

					 NULL,

					 fields,

					 analyzer_ );

	if ( cpix_Succeeded( idxUtil_->idxDb() ) )

		{

		markIndexed(item, true);

		incTermFreqs(testMgr, content);

		return true; 

		}

	else 

		{

		return false;

		}

	}

void RandomTest::indexItem(Itk::TestMgr* testMgr, size_t item) 

{

	ITK_ASSERT( testMgr, tryIndexItem(testMgr, item), "Inserting %d failed", item ); 

}

bool RandomTest::tryDeleteItem(Itk::TestMgr* testMgr, size_t item)

{

	wstring id = GetItemId(item );

	cpix_IdxDb_deleteDocuments(idxUtil_->idxDb(), id.c_str());

	if ( cpix_Succeeded( idxUtil_->idxDb() ) )

		{

		markIndexed( item, false );

		wstring content = testCorpus_.item( item );

		decTermFreqs( testMgr, content );

		return true; 

		}

	return false; 

}

void RandomTest::deleteItem(Itk::TestMgr* testMgr, size_t item)

{

	ITK_ASSERT( testMgr, tryDeleteItem(testMgr, item), "Deleting %d failed", item); 

}

size_t RandomTest::indexRandom(Itk::TestMgr* testMgr)

	{

	int ret = getRandomItem( false );

	indexItem( testMgr, ret );

	return ret;

	}

void RandomTest::indexRandoms(Itk::TestMgr* testMgr, size_t n)

	{

	for (int i = 0; i < n; i++)

		{

		indexRandom(testMgr);

		}

        idxUtil_->flush();

	}

size_t RandomTest::deleteRandom(Itk::TestMgr* testMgr)

	{

	int ret = getRandomItem( true );

	deleteItem( testMgr, ret );

	return ret;

	}

void RandomTest::deleteRandoms(Itk::TestMgr* testMgr, size_t n)

	{

	for (int i = 0; i < n; i++)

		{

		deleteRandom(testMgr);

		}

        idxUtil_->flush();

	}

bool RandomTest::validState(Itk::TestMgr* testMgr, size_t item)

	{

	bool ret = false;

	wstring id = GetItemId( item );

	cpix_Query* query =

	cpix_QueryParser_parse( uidQueryParser_, id.c_str() );

	if ( query )

		{

		cpix_Hits *hits =

		cpix_IdxDb_search(idxUtil_->idxDb(),

				query);

		if ( hits )

			{

			if ( indexed( item ) )

				{

				ret = ( cpix_Hits_length( hits ) == 1 );

				}

			else

				{

				ret = ( cpix_Hits_length( hits ) == 0 );

				}

			cpix_Hits_destroy( hits );

			}

		cpix_Query_destroy( query );

		}

	else

		{

		ITK_MSG( testMgr, "Creating query failed" );

		}

	return ret;

	}

void RandomTest::assertState(Itk::TestMgr* testMgr, size_t item)

	{

	bool valid = validState( testMgr, item );

	if ( indexed( item ) )

		{

		ITK_ASSERT( testMgr,

				    valid,

				    "Indexed item not found" );

		}

	else

		{

		ITK_ASSERT( testMgr,

				    valid,

				    "Removed item found" );

		}

	}

void RandomTest::assertContent(Itk::TestMgr* testMgr, size_t item)

{

    wstring content = testCorpus_.item(item);

    wostringstream queryText;

    queryText<<"\"";

    queryText<<content;

    queryText<<"\"";

    cpix_Query* query =

	cpix_QueryParser_parse( contentQueryParser_, queryText.str().c_str() );

    if ( query )

        {

            cpix_Hits *hits =

		cpix_IdxDb_search(idxUtil_->idxDb(),

                                  query);

            if ( hits )

                {

                    if ( indexed( item ) )

                        {

                            bool found = false;

                            for ( int i = 0; i < cpix_Hits_length( hits ); i++ )

                                {

                                    cpix_Document doc;

                                    cpix_Hits_doc( hits, i, &doc );

                                    const wchar_t* id = cpix_Document_getFieldValue( &doc, LCPIX_DOCUID_FIELD );

                                    if ( id )

                                        {

                                            wstring str( id );

                                            if ( GetItemIndex( str.c_str() ) == item )

                                                {

                                                    found = true;

                                                    break;

                                                }

                                        }

                                }

                            if ( !found )

                                {

                                    ITK_MSG( testMgr, "Failed content %d", item );

                                }

                            // TODO should not assert here, because then

                            // cpix_Hits instance leaks here. Use

                            // ITK_EXPECT - that does not throw

                            ITK_ASSERT( testMgr,

                                        found,

                                        "Content check failed for %d" );

                        }

                    else

                        {

                            ITK_MSG( testMgr, "Content asserting is unreliable for item not in index" );

                        }

                    cpix_Hits_destroy( hits );

                }

            cpix_Query_destroy( query );

        }

    else

        {

            ITK_MSG( testMgr, "Creating query failed for %S", queryText.str().c_str() );

        }

}

void RandomTest::assertAllItemsState(Itk::TestMgr* testMgr)

	{

	for ( int i = 0; i < testCorpus_.size(); i++ )

		{

		assertState(testMgr, i);

		}

	}

void RandomTest::assertItemsState(Itk::TestMgr* testMgr, vector<size_t>& vector)

	{

	for (int i = 0; i < vector.size(); i++)

		{

		assertState(testMgr, vector[i]);

		}

	}

size_t RandomTest::termMatchCount(Itk::TestMgr* testMgr, wstring& term)

	{

	wostringstream queryText;

	queryText<<"\"";

	queryText<<term;

	queryText<<"\"";