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#ifndef QHELPSEARCHINDEXREADERCLUCENE_H
#define QHELPSEARCHINDEXREADERCLUCENE_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of the help generator tools. This header file may change from version
// to version without notice, or even be removed.
//
// We mean it.
//

#include "qhelpsearchengine.h"

#include "fulltextsearch/qanalyzer_p.h"
#include "fulltextsearch/qquery_p.h"

#include <QtCore/QList>
#include <QtCore/QMutex>
#include <QtCore/QObject>
#include <QtCore/QString>
#include <QtCore/QThread>
#include <QtCore/QWaitCondition>

class QHelpEngineCore;

QT_BEGIN_NAMESPACE

namespace qt {
    namespace fulltextsearch {
        namespace clucene {

class QHelpSearchIndexReader : public QThread
{
    Q_OBJECT

public:
    QHelpSearchIndexReader();
    ~QHelpSearchIndexReader();

    void cancelSearching();
    void search(const QString &collectionFile,
        const QString &indexFilesFolder,
        const QList<QHelpSearchQuery> &queryList);

    int hitsCount() const;
    QHelpSearchEngine::SearchHit hit(int index) const;

signals:
    void searchingStarted();
    void searchingFinished(int hits);

private:
    void run();
    bool defaultQuery(const QString &term, QCLuceneBooleanQuery &booleanQuery,
        QCLuceneStandardAnalyzer &analyzer);
    bool buildQuery(QCLuceneBooleanQuery &booleanQuery, const QList<QHelpSearchQuery> &queryList,
        QCLuceneStandardAnalyzer &analyzer);
    bool buildTryHarderQuery(QCLuceneBooleanQuery &booleanQuery,
        const QList<QHelpSearchQuery> &queryList, QCLuceneStandardAnalyzer &analyzer);
    void boostSearchHits(const QHelpEngineCore &engine, QList<QHelpSearchEngine::SearchHit> &hitList,
        const QList<QHelpSearchQuery> &queryList);

private:
    QMutex mutex;
    QList<QHelpSearchEngine::SearchHit> hitList;
    QWaitCondition waitCondition;

    bool m_cancel;
    QString m_collectionFile;
    QList<QHelpSearchQuery> m_query;
    QString m_indexFilesFolder;
};

        }   // namespace clucene
    }   // namespace fulltextsearch
}   // namespace qt

QT_END_NAMESPACE

#endif  // QHELPSEARCHINDEXREADERCLUCENE_H