/**
* @param UriInterface $uri
* @param array $params
* @param string $method
*
* @return string
*/
public function getSignature(UriInterface $uri, array $params, $method = 'POST')
{
parse_str($uri->getQuery(), $queryStringData);
foreach (array_merge($queryStringData, $params) as $key => $value) {
$signatureData[rawurlencode($key)] = rawurlencode($value);
}
ksort($signatureData);
// determine base uri
$baseUri = $uri->getScheme() . '://' . $uri->getRawAuthority();
if ('/' === $uri->getPath()) {
$baseUri .= $uri->hasExplicitTrailingHostSlash() ? '/' : '';
} else {
$baseUri .= $uri->getPath();
}
$baseString = strtoupper($method) . '&';
$baseString .= rawurlencode($baseUri) . '&';
$baseString .= rawurlencode($this->buildSignatureDataString($signatureData));
return base64_encode($this->hash($baseString));
}
