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<?php
/**
* Zalo © 2019
*
*/
namespace Zalo\HttpClients;
use Zalo\HttpClients\ZaloCurlHttpClient;
/**
* Class HttpClientsFactory
*
* @package Zalo
*/
class HttpClientsFactory {
private function __construct() {
// a factory constructor should never be invoked
}
/**
* HTTP client generation.
*
* @param ZaloHttpClientInterface|Client|string|null $handler
*
* @throws Exception
* @throws InvalidArgumentException If the http client handler isn't "curl", "stream", or an instance of Zalo\HttpClients\ZaloHttpClientInterface.
*
* @return ZaloHttpClientInterface
*/
public static function createHttpClient($handler) {
if (!$handler) {
return self::detectDefaultClient();
}
if ($handler instanceof ZaloHttpClientInterface) {
return $handler;
}
if ('curl' === $handler) {
if (!extension_loaded('curl')) {
throw new Exception('The cURL extension must be loaded in order to use the "curl" handler.');
}
return new ZaloCurlHttpClient();
}
throw new InvalidArgumentException('The http client handler must be set to "curl" be an instance of Zalo\HttpClients\ZaloHttpClientInterface');
}
/**
* Detect default HTTP client.
*
* @return ZaloHttpClientInterface
*/
private static function detectDefaultClient() {
return new ZaloCurlHttpClient();
}
}