#ifndef DB_H
#define DB_H

#include <string>
#include <vector>
#include "user.h"

struct Student {
    int id;
    std::string nom;
    int notes[3];
};

// --- Connexion et fermeture ---
bool openDB(const std::string& filename);
void closeDB();

// --- Authentification ---
int loginUser(const std::string& login, const std::string& password);

// --- Étudiants ---
std::vector<Student> getAllStudents();               // ADMIN/PROF
Student getStudentByLogin(const std::string& login); // STUDENT

// --- Notes ---
bool updateNote(int studentId, int noteIndex, int newNote);

// --- Export / Import ---
bool exportData(const std::string& filename, const std::string& role, const std::string& login);
bool importData(const std::string& filename, const std::string& role);

#endif