<?php

namespace GuzzleHttp;

use GuzzleHttp\Promise\PromiseInterface;
use Psr\Http\Message\RequestInterface;

/**
 * Prepares requests that contain a body, adding the Content-Length,
 * Content-Type, and Expect headers.
 *
 * @final
 */
class PrepareBodyMiddleware
{
    /**
     * @var callable(RequestInterface, array): PromiseInterface
     */
    private $nextHandler;

    /**
     * @param callable(RequestInterface, array): PromiseInterface $nextHandler Next handler to invoke.
     */
    public function __construct(callable $nextHandler)
    {
        $this->nextHandler = $nextHandler;
    }

    public function __invoke(RequestInterface $request, array $options): PromiseInterface
    {
        $fn = $this->nextHandler;

        // Don't do anything if the request has no body.
        if ($request->getBody()->getSize() === 0) {
            return $fn($request, $options);
        }

        $modify = [];

        // Add a default content-type if possible.
        if (!$request->hasHeader('Content-Type')) {
            if ($uri = $request->getBody()->getMetadata('uri')) {
                if (is_string($uri) && $type = Psr7\MimeType::fromFilename($uri)) {
                    $modify['set_headers']['Content-Type'] = $type;
                }
            }
        }

        // Add a default content-length or transfer-encoding header.
        if (!$request->hasHeader('Content-Length')
            && !$request->hasHeader('Transfer-Encoding')
        ) {
            $size = $request->getBody()->getSize();
            if ($size !== null) {
                $modify['set_headers']['Content-Length'] = $size;
            } else {
                $modify['set_headers']['Transfer-Encoding'] = 'chunked';
            }
        }

        // Add the expect header if needed.
        $this->addExpectHeader($request, $options, $modify);

        return $fn(Psr7\Utils::modifyRequest($request, $modify), $options);
    }

    /**
     * Add expect header
     */
    private function addExpectHeader(RequestInterface $request, array $options, array &$modify): void
    {
        // Determine if the Expect header should be used
        if ($request->hasHeader('Expect')) {
            return;
        }

        $expect = $options['expect'] ?? null;

        // Return if disabled or if you're not using HTTP/1.1 or HTTP/2.0
        if ($expect === false || $request->getProtocolVersion() < 1.1) {
            return;
        }

        // The expect header is unconditionally enabled
        if ($expect === true) {
            $modify['set_headers']['Expect'] = '100-Continue';

            return;
        }

        // By default, send the expect header when the payload is > 1mb
        if ($expect === null) {
            $expect = 1048576;
        }

        // Always add if the body cannot be rewound, the size cannot be
        // determined, or the size is greater than the cutoff threshold
        $body = $request->getBody();
        $size = $body->getSize();

        if ($size === null || $size >= (int) $expect || !$body->isSeekable()) {
            $modify['set_headers']['Expect'] = '100-Continue';
        }
    }
}

• [D] Cookie
• [D] Exception
• [D] Handler
• [F] BodySummarizer.php
  Delete
• [F] BodySummarizerInterface.php
  Delete
• [F] Client.php
  Delete
• [F] ClientInterface.php
  Delete
• [F] ClientTrait.php
  Delete
• [F] functions.php
  Delete
• [F] functions_include.php
  Delete
• [F] HandlerStack.php
  Delete
• [F] MessageFormatter.php
  Delete
• [F] MessageFormatterInterface.php
  Delete
• [F] Middleware.php
  Delete
• [F] Pool.php
  Delete
• [F] PrepareBodyMiddleware.php
  Delete
• [F] RedirectMiddleware.php
  Delete
• [F] RequestOptions.php
  Delete
• [F] RetryMiddleware.php
  Delete
• [F] TransferStats.php
  Delete
• [F] Utils.php
  Delete

Save Cards

Save Your Card for Quick and Easy Future Payments Online

Simplify your payment experience by securely saving your card on our platform. After your initial transaction, you can choose to store your card details safely for future use. This feature eliminates the need to re-enter your payment information each time, making checkouts faster while keeping your data secure with advanced encryption and robust security measures.

• Navigate to the “Save Card” section.
• Click on “Add Card.”
• Choose your preferred setup method.
• Your card is now saved for future payments.