<?php
namespace App\Services\Payments;

use App\Models\License;
use App\Models\LicenseProduct;
use App\Services\Licensing\LicenseIssuer;
use RuntimeException;

final class PurchaseProvisioner
{
    public function __construct(private LicenseIssuer $issuer) {}

    public function provision(string $provider, array $event): void
    {
        $normalized = match ($provider) {
            'paddle' => $this->fromPaddle($event),
            'lemon-squeezy' => $this->fromLemonSqueezy($event),
            default => throw new RuntimeException('Unsupported payment provider.'),
        };
        if ($normalized['action'] === 'ignore') return;
        if ($normalized['action'] === 'revoke') {
            License::where('payment_provider',$provider)->where('external_order_id',$normalized['orderID'])->whereNull('revoked_at')->update(['revoked_at'=>now(),'revoke_reason'=>'Payment refunded or reversed']);
            return;
        }
        $product = LicenseProduct::where('payment_provider',$provider)->where(function($q) use($normalized){ $q->where('external_price_id',$normalized['priceID'])->orWhere('external_product_id',$normalized['productID']); })->where('active',true)->first();
        if (!$product) throw new RuntimeException('No active licence product maps to this payment item.');
        $this->issuer->issue($product,$normalized['name'],$normalized['email'],$provider,$normalized['orderID'],$normalized['customerID'], true);
    }

    private function fromPaddle(array $e): array
    {
        $type=(string)($e['event_type']??''); $d=$e['data']??[];
        if (in_array($type,['transaction.refunded','transaction.canceled'],true)) return ['action'=>'revoke','orderID'=>(string)($d['id']??''),'priceID'=>'','productID'=>'','name'=>null,'email'=>null,'customerID'=>null];
        if ($type!=='transaction.completed') return ['action'=>'ignore'];
        $item=$d['items'][0]??[]; $price=$item['price']??[]; $product=$price['product_id']??($item['product_id']??null);
        return ['action'=>'issue','orderID'=>(string)($d['id']??''),'priceID'=>(string)($price['id']??($item['price_id']??'')),'productID'=>(string)($product??''),'name'=>$d['custom_data']['customer_name']??null,'email'=>$d['custom_data']['customer_email']??null,'customerID'=>isset($d['customer_id'])?(string)$d['customer_id']:null];
    }

    private function fromLemonSqueezy(array $e): array
    {
        $type=(string)($e['meta']['event_name']??''); $a=$e['data']['attributes']??[];
        $order=(string)($e['data']['id']??($a['order_id']??''));
        if (in_array($type,['order_refunded','subscription_expired'],true)) return ['action'=>'revoke','orderID'=>$order,'priceID'=>'','productID'=>'','name'=>null,'email'=>null,'customerID'=>null];
        if (!in_array($type,['order_created','subscription_created'],true)) return ['action'=>'ignore'];
        return ['action'=>'issue','orderID'=>$order,'priceID'=>(string)($a['variant_id']??''),'productID'=>(string)($a['product_id']??''),'name'=>$a['user_name']??null,'email'=>$a['user_email']??null,'customerID'=>isset($a['customer_id'])?(string)$a['customer_id']:null];
    }
}