/**
* @param Request\Request $request
* @return array
*/
public function buildHeader($request)
{
$date = gmdate('D, d M Y H:i:s T');
$idempotencyKey = $request->getIdempotence() ? md5(uniqid(rand(), true)) : '';
$signature = Middleware::generateSignature(parse_url($this->apiUrl, PHP_URL_HOST) . ':' . parse_url($this->apiUrl, PHP_URL_PORT), $request->getMethod(), parse_url($this->apiUrl . $request->getPath(), PHP_URL_PATH), parse_url($this->apiUrl, PHP_URL_QUERY), $date, $idempotencyKey, $request->getBody(), $this->paymentKey);
$header = array("Host: " . parse_url($this->apiUrl, PHP_URL_HOST), "Date: " . $date, "User-Agent: " . $this->userAgent, "Authorization: BZ1-HMAC-SHA256 DivisionId=" . $this->divisionId . ", Signature=" . $signature);
if ($idempotencyKey !== '') {
$header[] = "Idempotency-Key: " . $idempotencyKey;
}
return $header;
}