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Edit File: RequestBuilder.php

<?php

/*
 * Copyright (C) 2013 Mailgun
 *
 * This software may be modified and distributed under the terms
 * of the MIT license. See the LICENSE file for details.
 */

namespace Mailgun;

use AmeliaHttp\Discovery\MessageFactoryDiscovery;
use AmeliaHttp\Message\MultipartStream\MultipartStreamBuilder;
use AmeliaHttp\Message\RequestFactory;
use AmeliaPsr\Http\Message\RequestInterface;

/**
 * @author Tobias Nyholm <tobias.nyholm@gmail.com>
 */
class RequestBuilder
{
    /**
     * @var RequestFactory
     */
    private $requestFactory;

/**
     * @var MultipartStreamBuilder
     */
    private $multipartStreamBuilder;

/**
     * Creates a new PSR-7 request.
     *
     * @param string            $method
     * @param string            $uri
     * @param array             $headers
     * @param array|string|null $body    Request body. If body is an array we will send a as multipart stream request.
     *                                   If array, each array *item* MUST look like:
     *                                   array (
     *                                   'content' => string|resource|StreamInterface,
     *                                   'name'    => string,
     *                                   'filename'=> string (optional)
     *                                   'headers' => array (optinal) ['header-name' => 'header-value']
     *                                   )
     *
     * @return RequestInterface
     */
    public function create($method, $uri, array $headers = [], $body = null)
    {
        if (!is_array($body)) {
            return $this->getRequestFactory()->createRequest($method, $uri, $headers, $body);
        }

$builder = $this->getMultipartStreamBuilder();
        foreach ($body as $item) {
            $name = $item['name'];
            $content = $item['content'];
            unset($item['name']);
            unset($item['content']);

$builder->addResource($name, $content, $item);
        }

$multipartStream = $builder->build();
        $boundary = $builder->getBoundary();
        $builder->reset();

$headers['Content-Type'] = 'multipart/form-data; boundary="'.$boundary.'"';

return $this->getRequestFactory()->createRequest($method, $uri, $headers, $multipartStream);
    }

/**
     * @return RequestFactory
     */
    private function getRequestFactory()
    {
        if (null === $this->requestFactory) {
            $this->requestFactory = MessageFactoryDiscovery::find();
        }

return $this->requestFactory;
    }

/**
     * @param RequestFactory $requestFactory
     *
     * @return RequestBuilder
     */
    public function setRequestFactory($requestFactory)
    {
        $this->requestFactory = $requestFactory;

return $this;
    }

/**
     * @return MultipartStreamBuilder
     */
    private function getMultipartStreamBuilder()
    {
        if (null === $this->multipartStreamBuilder) {
            $this->multipartStreamBuilder = new MultipartStreamBuilder();
        }

return $this->multipartStreamBuilder;
    }

/**
     * @param MultipartStreamBuilder $multipartStreamBuilder
     *
     * @return RequestBuilder
     */
    public function setMultipartStreamBuilder($multipartStreamBuilder)
    {
        $this->multipartStreamBuilder = $multipartStreamBuilder;

return $this;
    }
}

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