<?php
declare(strict_types=1);
namespace App\Repository\Pdo;

use App\Repository\UserRepository;
use PDO;

final class PdoUserRepository implements UserRepository
{
    public function __construct(private PDO $pdo) {}

    public function byUsername(string $username): ?array
    {
        $st = $this->pdo->prepare(
            'SELECT id, username, password_hash, role, site_scope, failed_attempts, locked_until
               FROM move_users WHERE username = ? LIMIT 1'
        );
        $st->execute([$username]);
        $row = $st->fetch();
        if ($row === false) {
            return null;
        }
        return [
            'id' => (int)$row['id'],
            'username' => $row['username'],
            'password_hash' => $row['password_hash'],
            'role' => $row['role'],
            'site_scope' => $row['site_scope'],
            'failed_attempts' => (int)$row['failed_attempts'],
            'locked_until' => (int)$row['locked_until'],
        ];
    }

    public function recordFailure(int $userId, int $lockUntil): void
    {
        // Increment in SQL (not read-then-write in PHP) so concurrent failed
        // logins for the same account can't clobber each other's count.
        $st = $this->pdo->prepare(
            'UPDATE move_users SET failed_attempts = failed_attempts + 1, locked_until = ? WHERE id = ?'
        );
        $st->execute([$lockUntil, $userId]);
    }

    public function clearFailures(int $userId): void
    {
        $st = $this->pdo->prepare('UPDATE move_users SET failed_attempts = 0, locked_until = 0 WHERE id = ?');
        $st->execute([$userId]);
    }
}