mobilebackendgateway/app/Traits/ConsumesExternalService.php

<?php

namespace App\Traits;

use GuzzleHttp\Client;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Psr7\MultipartStream;
use Illuminate\Http\UploadedFile;

trait ConsumesExternalService
{
    /**
     *  Envoie une requete a un service
     * @param $method
     * @param $requestUrl
     * @param array $body
     * @param array $formParams
     * @param array $headers
     * @return string
     */
    public function perfomRequest($method, $requestUrl, $body = [], $headers = [], $formParams = [])
    {
        $client = new Client([
            'base_uri' => $this->baseUri,
        ]);

        if (isset($this->key)) {
            unset($headers['authorization']);
            $headers['Authorization'] = $this->key;
        }

        $response = $client->request($method, $requestUrl, ['json' => $body, 'form_params' => $formParams, 'headers' => $headers]);

        return $response->getBody()->getContents();
    }

    public function perfomRequestWithFiles($method, $requestUrl, $body = [], $headers = [], $formParams = [])
    {

        if (isset($this->key)) {
            unset($headers['authorization']);
            $headers['Authorization'] = $this->key;
        }

        $client = new Client([
            'base_uri' => $this->baseUri,
            'headers' => $headers
        ]);

        $request = new Request($method, $requestUrl, [], new MultipartStream($this->bodyToMultipart($body)));
        $response = $client->send($request);

        return $response->getBody()->getContents();
    }

    private function bodyToMultipart(array $body)
    {
        $multipart = [];
        foreach ($body as $key => $value) {
            if ($value instanceof UploadedFile) {
                array_push($multipart, [
                    'name' => $key,
                    'contents' => file_get_contents($value->getRealPath()),
                    'mine-type' => $value->getMimeType(),
                    'filename' => $value->getClientOriginalName(),
//                    'headers'  => [ 'Content-type' => 'application/octet-stream']
//                     'Content-type' => 'multipart/form-data',
                ]);
            } else {
                array_push($multipart, [
                    'name' => $key,
                    'contents' => $value,
                ]);
            }
        }
        return $multipart;
    }
}