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<?php
namespace Netflie\WhatsAppCloudApi\Http;
final class RawResponse
{
/**
* @var array The response headers in the form of an associative array.
*/
private array $headers;
/**
* @var string The raw response body.
*/
private string $body;
/**
* @var int The HTTP status response code.
*/
private $http_response_code;
/**
* Creates a new GraphRawResponse entity.
*
* @param string|array $headers The headers as a raw string or array.
* @param string $body The raw response body.
* @param int $http_status_code The HTTP response code (if sending headers as parsed array).
*/
public function __construct($headers, string $body, ?int $http_status_code = null)
{
if (is_numeric($http_status_code)) {
$this->http_response_code = (int)$http_status_code;
}
if (is_array($headers)) {
$this->headers = $headers;
} else {
$this->setHeadersFromString($headers);
}
$this->body = $body;
}
/**
* Return the response headers.
*
* @return array
*/
public function headers(): array
{
return $this->headers;
}
/**
* Return the body of the response.
*
* @return string
*/
public function body(): string
{
return $this->body;
}
/**
* Return the HTTP response code.
*
* @return int
*/
public function httpResponseCode(): int
{
return $this->http_response_code;
}
/**
* Sets the HTTP response code from a raw header.
*
* @param string $raw_response_headers
*/
public function setHttpResponseCodeFromHeader($raw_response_headers)
{
// https://tools.ietf.org/html/rfc7230#section-3.1.2
list($version, $status, $reason) = array_pad(explode(' ', $raw_response_headers, 3), 3, null);
$this->http_response_code = (int) $status;
}
/**
* Parse the raw headers and set as an array.
*
* @param string $raw_headers The raw headers from the response.
*/
protected function setHeadersFromString($raw_headers)
{
// Normalize line breaks
$raw_headers = str_replace("\r\n", "\n", $raw_headers);
// There will be multiple headers if a 301 was followed
// or a proxy was followed, etc
$header_collection = explode("\n\n", trim($raw_headers));
// We just want the last response (at the end)
$raw_header = array_pop($header_collection);
$header_components = explode("\n", $raw_header);
foreach ($header_components as $line) {
if (strpos($line, ': ') === false) {
$this->setHttpResponseCodeFromHeader($line);
} else {
list($key, $value) = explode(': ', $line, 2);
$this->headers[$key] = $value;
}
}
}
}