<?php
namespace GuzzleHttp;
use GuzzleHttp\Promise as P;
use GuzzleHttp\Promise\PromiseInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;
/**
* Middleware that retries requests based on the boolean result of
* invoking the provided "decider" function.
*
* @final
*/
class RetryMiddleware
{
/**
* @var callable(RequestInterface, array): PromiseInterface
*/
private $nextHandler;
/**
* @var callable
*/
private $decider;
/**
* @var callable(int)
*/
private $delay;
/**
* @param callable $decider Function that accepts the number of retries,
* a request, [response], and [exception] and
* returns true if the request is to be
* retried.
* @param callable(RequestInterface, array): PromiseInterface $nextHandler Next handler to invoke.
* @param (callable(int): int)|null $delay Function that accepts the number of retries
* and returns the number of
* milliseconds to delay.
*/
public function __construct(callable $decider, callable $nextHandler, callable $delay = null)
{
$this->decider = $decider;
$this->nextHandler = $nextHandler;
$this->delay = $delay ?: __CLASS__.'::exponentialDelay';
}
/**
* Default exponential backoff delay function.
*
* @return int milliseconds.
*/
public static function exponentialDelay(int $retries): int
{
return (int) 2 ** ($retries - 1) * 1000;
}
public function __invoke(RequestInterface $request, array $options): PromiseInterface
{
if (!isset($options['retries'])) {
$options['retries'] = 0;
}
$fn = $this->nextHandler;
return $fn($request, $options)
->then(
$this->onFulfilled($request, $options),
$this->onRejected($request, $options)
);
}
/**
* Execute fulfilled closure
*/
private function onFulfilled(RequestInterface $request, array $options): callable
{
return function ($value) use ($request, $options) {
if (!($this->decider)(
$options['retries'],
$request,
$value,
null
)) {
return $value;
}
return $this->doRetry($request, $options, $value);
};
}
/**
* Execute rejected closure
*/
private function onRejected(RequestInterface $req, array $options): callable
{
return function ($reason) use ($req, $options) {
if (!($this->decider)(
$options['retries'],
$req,
null,
$reason
)) {
return P\Create::rejectionFor($reason);
}
return $this->doRetry($req, $options);
};
}
private function doRetry(RequestInterface $request, array $options, ResponseInterface $response = null): PromiseInterface
{
$options['delay'] = ($this->delay)(++$options['retries'], $response, $request);
return $this($request, $options);
}
}
At NFC Pay, we strive to provide a seamless and satisfactory experience with our services. This Refund Policy outlines the circumstances under which refunds may be issued for transactions made through our platform. Please read this policy carefully to understand your rights regarding refunds.
1. Eligibility for Refunds
Refunds may be considered under the following circumstances:
2. Non-Refundable Situations
Refunds will generally not be issued in the following situations:
3. Refund Process
To request a refund, please follow these steps:
4. Refund Exceptions
Certain transactions may be subject to specific terms and conditions, including non-refundable fees or charges. Please review the terms associated with each transaction carefully, as some fees may not be eligible for refunds.
5. Modifications to the Refund Policy
NFC Pay reserves the right to modify this Refund Policy at any time. Changes will be communicated through updates on our website and app, and the effective date will be updated accordingly. We encourage you to review this policy periodically to stay informed about our refund practices.
By using NFC Pay, you agree to this Refund Policy and understand the terms under which refunds may be issued. Our goal is to ensure a fair and transparent refund process, providing you with confidence and peace of mind when using our services.