/**
 * @file sqlite.h
 * @brief SQLite DB access layer
 *
 * (c) 2013-2014 by Mega Limited, Auckland, New Zealand
 *
 * This file is part of the MEGA SDK - Client Access Engine.
 *
 * Applications using the MEGA API must present a valid application key
 * and comply with the the rules set forth in the Terms of Service.
 *
 * The MEGA SDK is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @copyright Simplified (2-clause) BSD License.
 *
 * You should have received a copy of the license along with this
 * program.
 */

#ifdef USE_SQLITE
#ifndef DBACCESS_CLASS
#define DBACCESS_CLASS SqliteDbAccess

#include <sqlite3.h>

namespace mega {

class MEGA_API SqliteDbTable : public DbTable
{
    sqlite3* db;
    sqlite3_stmt* pStmt;
    string dbfile;
    FileSystemAccess *fsaccess;

public:
    void rewind();
    bool next(uint32_t*, string*);
    bool get(uint32_t, string*);
    bool put(uint32_t, char*, unsigned);
    bool del(uint32_t);
    void truncate();
    void begin();
    void commit();
    void abort();
    void remove();

    SqliteDbTable(PrnGen &rng, sqlite3*, FileSystemAccess &fsAccess, const string &path, const bool checkAlwaysTransacted);
    ~SqliteDbTable();

    bool inTransaction() const override;

    LocalPath dbFile() const;
};

class MEGA_API SqliteDbAccess : public DbAccess
{
    LocalPath mRootPath;

public:
    explicit SqliteDbAccess(const LocalPath& rootPath);

    ~SqliteDbAccess();

    LocalPath databasePath(const FileSystemAccess& fsAccess,
                           const string& name,
                           const int version) const;

    SqliteDbTable* open(PrnGen &rng, FileSystemAccess& fsAccess, const string& name, const int flags = 0x0) override;

    bool probe(FileSystemAccess& fsAccess, const string& name) const override;

    const LocalPath& rootPath() const override;
};

} // namespace

#endif
#endif
