#ifndef DATABASE_H
#define DATABASE_H

#include "sale.h"
#include "seller.h"

#include <string>

#include <sqlite3.h>

class Database
{
public:
    enum class InitResult { OK, OUTDATED_REPLACED };
    explicit Database(const std::string &dbname);
    Database();
    ~Database();
    Database(const Database &) = delete;
    Database &operator=(const Database &) = delete;
    void exec(const std::string &sql);
    unsigned int storeSellers(std::vector<std::unique_ptr<Seller>> &sellers,
                              bool onlyDelete = false);
    unsigned int loadSellers(std::vector<std::unique_ptr<Seller>> &sellers);
    unsigned int storeSales(std::vector<std::unique_ptr<Sale>> &sales);
    unsigned int loadSales(std::vector<std::unique_ptr<Sale>> &sales,
                           std::vector<std::unique_ptr<Seller>> &sellers);
    void updateCashPointNo(int oldCashPointNo, int newCashPointNo);
    void newDb();
    InitResult getInitResult() { return initResult_; }

private:
    sqlite3 *db_{nullptr};
    std::string dbname_;
    void init();
    void beginTransaction();
    void endTransaction();
    void createNew();
    int getVersion();
    unsigned int storeArticles(std::vector<Article *> articles);
    void updateDbToVer2();
    void updateDbToVer3();
    InitResult initResult_{InitResult::OK};
};

#endif // DATABASE_H