<?php
require_once 'config.php';

class Auth {
    public static function check() {
        return isset($_SESSION['user_id']);
    }
    
    public static function login($username, $password) {
        $config = Config::load();
        $users = $config['users'];
        
        foreach ($users as $user) {
            if ($user['id'] === $username && password_verify($password, $user['password'])) {
                $_SESSION['user_id'] = $user['id'];
                return true;
            }
        }
        return false;
    }
    
    public static function logout() {
        unset($_SESSION['user_id']);
        session_destroy();
    }

    public static function verifyCurrentPassword($password) {
        $config = Config::load();
        $userId = $_SESSION['user_id'];
        
        foreach ($config['users'] as $user) {
            if ($user['id'] === $userId) {
                return password_verify($password, $user['password']);
            }
        }
        return false;
    }
}