portapack-mayhem/firmware/application/database.hpp

/*
 * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
 * Copyright (C) 2016 Furrtek
 * Copyright (C) 2022 Arjan Onwezen
 *
 * This file is part of PortaPack.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef __DATABASE_H__
#define __DATABASE_H__

#include <cstddef>
#include <cstdint>
#include <string>

#include "file.hpp"

class database {
   public:
#define DATABASE_RECORD_FOUND 0       // record found in database
#define DATABASE_NOT_FOUND -1         // database not found / could not be opened
#define DATABASE_RECORD_NOT_FOUND -2  // record could not be found in database

    struct MidDBRecord {
        char country[32];  // country name
    };

    int retrieve_mid_record(MidDBRecord* record, std::string search_term);

    struct AirlinesDBRecord {
        char airline[32];  // airline name
        char country[32];  // country name
    };

    int retrieve_airline_record(AirlinesDBRecord* record, std::string search_term);

    struct AircraftDBRecord {
        char aircraft_registration[9];   // aircraft registration
        char aircraft_manufacturer[33];  // aircraft manufacturer
        char aircraft_model[33];         // aircraft model
        char icao_type[5];               // ICAO type descripton or when unavailable ICAO type designator
        char aircraft_owner[33];         // aircraft owner
        char aircraft_operator[33];      // aircraft operator
    };

    int retrieve_aircraft_record(AircraftDBRecord* record, std::string search_term);

   private:
    std::filesystem::path file_path = "";  // path including filename
    int index_item_length = 0;             // length of index item
    int record_length = 0;                 // length of record

    File db_file{};
    int number_of_records = 0;
    int position = 0;

    char file_buffer[32]{0};
    bool found = false;

    int result = 0;

    int retrieve_record(std::filesystem::path file_path, int index_item_length, int record_length, void* record, std::string search_term);
};

#endif /*__DATABASE_H__*/