invoiceninja/app/PaymentDrivers/GoCardlessPaymentDriver.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\PaymentDrivers;

use App\Models\ClientGatewayToken;
use App\Models\GatewayType;
use App\Models\Payment;
use App\Models\PaymentHash;
use App\Models\SystemLog;
use App\Utils\Traits\MakesHash;


class GoCardlessPaymentDriver extends BaseDriver
{
    use MakesHash;

    public $refundable = true;

    public $token_billing = true;

    public $can_authorise_credit_card = true;

    public \GoCardlessPro\Client $gateway;

    public $payment_method;

    public static $methods = [
        GatewayType::BANK_TRANSFER => \App\PaymentDrivers\GoCardless\ACH::class,
    ];

    const SYSTEM_LOG_TYPE = SystemLog::TYPE_GOCARDLESS;

    public function setPaymentMethod($payment_method_id)
    {
        $class = self::$methods[$payment_method_id];

        $this->payment_method = new $class($this);

        return $this;
    }

    public function gatewayTypes(): array
    {
        $types = [];

        if (
            $this->client
            && isset($this->client->country)
            && in_array($this->client->country->iso_3166_3, ['USA'])
        ) {
            $types[] = GatewayType::BANK_TRANSFER;
        }

        return $types;
    }

    public function init(): self
    {
        $this->gateway = new \GoCardlessPro\Client([
            'access_token' => $this->company_gateway->getConfigField('accessToken'),
            'environment'  => $this->company_gateway->getConfigField('testMode') ? \GoCardlessPro\Environment::SANDBOX : \GoCardlessPro\Environment::LIVE,
        ]);

        return $this;
    }

    public function authorizeView(array $data)
    {
        return $this->payment_method->authorizeView($data);
    }

    public function authorizeResponse($request)
    {
        return $this->payment_method->authorizeResponse($request);
    }

    public function processPaymentView(array $data)
    {
        return $this->payment_method->paymentView($data);
    }

    public function processPaymentResponse($request)
    {
        return $this->payment_method->paymentResponse($request);
    }

    public function refund(Payment $payment, $amount, $return_client_response = false)
    {
        // ..
    }

    public function tokenBilling(ClientGatewayToken $cgt, PaymentHash $payment_hash)
    {
        // ..
    }

    public function convertToGoCardlessAmount($amount, $precision)
    {
        return \round(($amount * pow(10, $precision)), 0);
    }
}