<?php

namespace GuzzleHttp;

use GuzzleHttp\Promise\PromiseInterface;
use GuzzleHttp\Promise\RejectedPromise;
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.
 */
class RetryMiddleware
{
    /** @var callable */
    private $nextHandler;

    /** @var callable */
    private $decider;

    /** @var callable */
    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 $nextHandler Next handler to invoke.
     * @param callable $delay       Function that accepts the number of retries
     *                              and [response] 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.
     *
     * @param int $retries
     *
     * @return int milliseconds.
     */
    public static function exponentialDelay($retries)
    {
        return (int) pow(2, $retries - 1) * 1000;
    }

    /**
     * @param RequestInterface $request
     * @param array            $options
     *
     * @return PromiseInterface
     */
    public function __invoke(RequestInterface $request, array $options)
    {
        if (!isset($options['retries'])) {
            $options['retries'] = 0;
        }

        $fn = $this->nextHandler;
        return $fn($request, $options)
            ->then(
                $this->onFulfilled($request, $options),
                $this->onRejected($request, $options)
            );
    }

    /**
     * Execute fulfilled closure
     *
     * @return mixed
     */
    private function onFulfilled(RequestInterface $req, array $options)
    {
        return function ($value) use ($req, $options) {
            if (!call_user_func(
                $this->decider,
                $options['retries'],
                $req,
                $value,
                null
            )) {
                return $value;
            }
            return $this->doRetry($req, $options, $value);
        };
    }

    /**
     * Execute rejected closure
     *
     * @return callable
     */
    private function onRejected(RequestInterface $req, array $options)
    {
        return function ($reason) use ($req, $options) {
            if (!call_user_func(
                $this->decider,
                $options['retries'],
                $req,
                null,
                $reason
            )) {
                return Promise\rejection_for($reason);
            }
            return $this->doRetry($req, $options);
        };
    }

    /**
     * @return self
     */
    private function doRetry(RequestInterface $request, array $options, ?ResponseInterface $response = null)
    {
        $options['delay'] = call_user_func($this->delay, ++$options['retries'], $response);

        return $this($request, $options);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MzU5Nzk1MTYxMjQ0NzI5MCA0MjgwMTkxMTI1MDk1NTgwIDk1OTc3ODg4MzQyOTk3MzA=