#pragma once

#include <private/qgeofiletilecache_p.h>

#include <QSqlDatabase>

class TiQGeoFileTileCache : public QGeoFileTileCache
{
public:
    TiQGeoFileTileCache(const QString& directory = QString(), QObject* parent = nullptr);
    ~TiQGeoFileTileCache();

    QSharedPointer<QGeoTileTexture> get(const QGeoTileSpec& spec) override;

    void insert(const QGeoTileSpec& spec, const QByteArray& bytes, const QString& format,
                QAbstractGeoTileCache::CacheAreas areas = QAbstractGeoTileCache::AllCaches) override;

private:
    void addToSqlite(const QGeoTileSpec& spec, const QString& format, const QByteArray& bytes);

    QSharedPointer<QGeoTileTexture> getFromSqlite(const QGeoTileSpec& spec);

    //由于qtlocation提供的qhash计算出现错误的机率较大,因此我们自已计算hash
    static quint64 getTileHash(int type, int x, int y, int z);

    bool openSqlite(const QString& connectId);

private:
    QSqlDatabase* m_db     = nullptr;
    bool          m_valid  = false;
    QString       m_dbName = "TiMapCache.db";
};