Create multipart/form-data requests? about oauth2-client

[fverry]

You can make it work with this following extra code :

if (isset($options['multipart']))
{
	$multipartStream = new GuzzleHttp\Psr7\MultipartStream($options['multipart']);
	$boundary = $multipartStream->getBoundary();
	$options['headers']['content-type'] = "multipart/form-data; boundary={$boundary}";
	$options['body'] = $multipartStream;
	unset($options['multipart']);
}

It is inspired from GuzzleHttp\Client::applyOptions() which you should read.

As stated by this stackoverflow answer, the only keys allowed in League\OAuth2\Client\Provider\AbstractProvider::getAuthenticatedRequest()'s $options are "headers", "body", and "protocolVersion".

Thus in the following code, the "multipart" key in the $options array will be ignored.

$multipart = [];
$multipart[] = [
	'name'     => "documents[{$key}]",
	'contents' => GuzzleHttp\Psr7\Utils::tryFopen($file['tmp_name'], 'r'),
	'filename' => $file['name'],
];
$options['multipart'] = $multipart;
$request = $provider->getAuthenticatedRequest($method, $url, $token, $options);