<?php

declare(strict_types=1);

namespace App\Services;

use App\Core\Database;
use Exception;

final class SubscriptionService
{
    public function checkLimit(string $tenantId, string $type): void
    {
        $db = Database::getInstance();
        
        $stmt = $db->prepare("SELECT * FROM subscriptions WHERE tenant_id = ? LIMIT 1");
        $stmt->execute([$tenantId]);
        $sub = $stmt->fetch();

        if (!$sub) throw new Exception("لا يوجد اشتراك فعال");

        if ($type === 'invoices') {
            if ($sub['invoices_used_this_month'] >= $sub['max_invoices_per_month']) {
                throw new Exception("لقد وصلت للحد الأقصى من الفواتير المسموح بها في خطتك الحالية");
            }
        }

        if ($type === 'companies') {
            $countStmt = $db->prepare("SELECT COUNT(*) as total FROM companies WHERE tenant_id = ? AND deleted_at IS NULL");
            $countStmt->execute([$tenantId]);
            $count = $countStmt->fetch()['total'];

            if ($count >= $sub['max_companies']) {
                throw new Exception("لقد وصلت للحد الأقصى من الشركات المسموح بها في خطتك الحالية");
            }
        }
    }

    public function incrementUsage(string $tenantId, string $type): void
    {
        if ($type === 'invoices') {
            $db = Database::getInstance();
            $stmt = $db->prepare("UPDATE subscriptions SET invoices_used_this_month = invoices_used_this_month + 1 WHERE tenant_id = ?");
            $stmt->execute([$tenantId]);
        }
    }
}