تعریف چند کال بک از یک درگاه about payment HOT 2 CLOSED

public function payment_request(Request $request)
    {
        $gateway ='nextpay';
        $amount = 10000;
        $callback = route('calback-api');
        if( $request->has('gateway') && $request->gateway == null)
            $gateway = $request->gateway;
        if( $request->has('amount') && $request->amount == null)
            $amount = $request->amount;
        if( $request->has('callback') && $request->callback == null)
            $callback = $request->callback;

        return Payment::via($gateway)->callbackUrl($callback)->purchase(
            (new Invoice)->amount($amount),
            function($driver, $transactionId) use ($amount) {
                $transaction = new Transaction();
                $transaction->price = $amount;
                $transaction->transaction_id = $transactionId;
                $transaction->description = "افزایش اعتبار به مبلغ " . $amount . " تومان در سایت تست";
                $transaction->save();
            }
        )->pay()->toJson();
    }