//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
//SPDX-License-Identifier: GPL-3.0-or-later

#pragma once

#include <stdexcept>
#include <filesystem>
#include <optional>

#include <mysql.h>

#include "database/interface.h"
#include "utils/helpers.h"

namespace DB {
class MySQL : public Interface {
    class Statement;
    class Transaction;


public:
    MySQL();
    ~MySQL() override;

    void connect(const std::string& path) override;
    void disconnect() override;
    void setCredentials(const std::string& login, const std::string& password) override;
    void setDatabase(const std::string& database) override;

    void migrate(uint8_t targetVersion) override;
    uint8_t getVersion() override;
    void setVersion(uint8_t version) override;

    unsigned int registerAccount(const std::string& login, const std::string& hash) override;
    std::string getAccountHash(const std::string& login) override;
    unsigned int createSession(const std::string& login, const std::string& access, const std::string& renew) override;
    Session findSession(const std::string& accessToken) override;

private:
    void executeFile(const std::filesystem::path& relativePath);
    static std::optional<std::string> getComment(std::string& string);
    unsigned int lastInsertedId();

protected:
    MYSQL connection;
    std::string login;
    std::string password;
    std::string database;

struct ResDeleter {
    void operator () (MYSQL_RES* res) {
        mysql_free_result(res);
    }
};
};
}