<?php

namespace App\Services\Licensing;

use App\Models\License;
use App\Models\LicenseDeliveryOutbox;
use App\Models\LicenseProduct;
use Illuminate\Support\Facades\Crypt;
use Illuminate\Support\Facades\DB;

final class LicenseIssuer
{
    public function issue(LicenseProduct $product, ?string $name, ?string $email, ?string $provider = null, ?string $orderID = null, ?string $customerID = null, bool $queueDelivery = false): array
    {
        return DB::transaction(function () use ($product, $name, $email, $provider, $orderID, $customerID, $queueDelivery) {
            if ($provider && $orderID) {
                $existing = License::where('payment_provider', $provider)->where('external_order_id', $orderID)->first();
                if ($existing) {
                    return [$existing, null];
                }
            }
            $plain = LicenseKey::generate();
            $license = License::create([
                'license_product_id' => $product->id,
                'license_key_hash' => LicenseKey::hash($plain),
                'license_key_last4' => substr(LicenseKey::normalize($plain), -4),
                'customer_name' => $name,
                'customer_email' => $email ? strtolower(trim($email)) : null,
                'edition' => $product->edition,
                'activation_limit' => $product->activation_limit,
                'max_major_version' => $product->max_major_version,
                'payment_provider' => $provider,
                'external_order_id' => $orderID,
                'external_customer_id' => $customerID,
            ]);
            if ($queueDelivery) {
                LicenseDeliveryOutbox::updateOrCreate(
                    ['license_id' => $license->id],
                    ['encrypted_license_key' => Crypt::encryptString($plain), 'recipient_email' => $license->customer_email, 'delivered_at' => null]
                );
            }

            return [$license, $plain];
        });
    }
}