MuditaOS/module-db/Database/Database.hpp

/*
 * @file Database.hpp
 * @author Mateusz Piesta (mateusz.piesta@mudita.com)
 * @date 24.05.19
 * @brief
 * @copyright Copyright (C) 2019 mudita.com
 * @details
 */

#pragma once

#include "sqlite3.h"

#include "QueryResult.hpp"
#include <memory>

class Database
{
  public:
    Database(const char *name);

    virtual ~Database();

    std::unique_ptr<QueryResult> query(const char *format, ...);

    bool execute(const char *format, ...);

    // Must be invoked prior creating any database object in order to initialize database OS layer
    static void initialize();
    // Must be invoked before closing system in order to properly close OS layer
    static void deinitialize();

    bool isInitialized() const
    {
        return isInitialized_;
    }

    bool storeIntoFile(const std::string &backupPath);

    uint32_t getLastInsertRowId();

  private:
    const uint32_t maxQueryLen = (8 * 1024);

    /*
     * Arguments:
     *
     *   usrPtr - Pointer to user data
     *    count - The number of columns in the result set
     *     data - The row's data
     *  columns - The column names
     */
    static int queryCallback(void *usrPtr, int count, char **data, char **columns);

  protected:
    sqlite3 *dbConnection;
    const char *dbName;
    bool isInitialized_;
};