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<?php |
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namespace Yabacon\Paystack\Helpers; |
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use \Closure; |
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use \Yabacon\Paystack\Contracts\RouteInterface; |
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class Caller |
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{ |
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private $use_guzzle=false; |
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private $secret_key; |
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public function __construct($paystackObj) |
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{ |
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$this->secret_key = $paystackObj->secret_key; |
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$this->use_guzzle = $paystackObj->use_guzzle; |
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} |
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public function moveArgsToSentargs( |
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$interface, |
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&$payload, |
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&$sentargs |
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) { |
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// check if interface supports args |
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if (array_key_exists(RouteInterface:: ARGS_KEY, $interface)) { |
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// to allow args to be specified in the payload, filter them out and put them in sentargs |
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$sentargs = (!$sentargs) ? [ ] : $sentargs; // Make sure $sentargs is not null |
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$args = $interface[RouteInterface::ARGS_KEY]; |
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while (list($key, $value) = each($payload)) { |
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// check that a value was specified |
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// with a key that was expected as an arg |
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if (in_array($key, $args)) { |
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$sentargs[$key] = $value; |
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unset($payload[$key]); |
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} |
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} |
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} |
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} |
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public function putArgsIntoEndpoint(&$endpoint, $sentargs) |
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{ |
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// substitute sentargs in endpoint |
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while (list($key, $value) = each($sentargs)) { |
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$endpoint = str_replace('{' . $key . '}', $value, $endpoint); |
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} |
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} |
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private function attemptGuzzle($method, $endpoint, $headers, $body) |
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{ |
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if ($this->use_guzzle && |
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class_exists('\\GuzzleHttp\\Exception\\BadResponseException') && |
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class_exists('\\GuzzleHttp\\Exception\\ClientException') && |
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class_exists('\\GuzzleHttp\\Exception\\ConnectException') && |
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class_exists('\\GuzzleHttp\\Exception\\RequestException') && |
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class_exists('\\GuzzleHttp\\Exception\\ServerException') && |
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class_exists('\\GuzzleHttp\\Exception\\TooManyRedirectsException') && |
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class_exists('\\GuzzleHttp\\Client') && |
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class_exists('\\GuzzleHttp\\Psr7\\Request')) { |
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$request = new \GuzzleHttp\Psr7\Request(strtoupper($method), $endpoint, $headers, $body); |
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$client = new \GuzzleHttp\Client(); |
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try { |
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$response = $client->send($request); |
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} catch (\Exception $e) { |
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if (($e instanceof \GuzzleHttp\Exception\BadResponseException |
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|| $e instanceof \GuzzleHttp\Exception\ClientException |
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|| $e instanceof \GuzzleHttp\Exception\ConnectException |
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|| $e instanceof \GuzzleHttp\Exception\RequestException |
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|| $e instanceof \GuzzleHttp\Exception\ServerException |
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|| $e instanceof \GuzzleHttp\Exception\TooManyRedirectsException |
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) && $e->hasResponse()) { |
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$response = $e->getResponse(); |
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} else { |
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throw $e; |
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} |
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} |
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return $response; |
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} else { |
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return false; |
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} |
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} |
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public function callEndpoint($interface, $payload = [ ], $sentargs = [ ]) |
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{ |
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$endpoint = Router::PAYSTACK_API_ROOT . $interface[RouteInterface::ENDPOINT_KEY]; |
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$method = $interface[RouteInterface::METHOD_KEY]; |
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$this->moveArgsToSentargs($interface, $payload, $sentargs); |
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$this->putArgsIntoEndpoint($endpoint, $sentargs); |
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$headers = ["Authorization"=>"Bearer " . $this->secret_key ]; |
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$body = ''; |
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if (($method === RouteInterface::POST_METHOD) |
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|| ($method === RouteInterface::PUT_METHOD) |
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) { |
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$headers["Content-Type"] = "application/json"; |
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$body = json_encode($payload); |
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} elseif ($method === RouteInterface::GET_METHOD) { |
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$endpoint = $endpoint . '?' . http_build_query($payload); |
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} |
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// Use Guzzle if found, else use Curl |
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$guzzleResponse = $this->attemptGuzzle($method, $endpoint, $headers, $body); |
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if ($guzzleResponse !== false) { |
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return $guzzleResponse; |
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} |
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return $this->attemptCurl($method, $endpoint, $headers, $body); |
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} |
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private function attemptCurl($method, $endpoint, $headers, $body) |
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{ |
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//open connection |
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$ch = \curl_init(); |
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\curl_setopt($ch, \CURLOPT_URL, $endpoint); |
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if ($method === RouteInterface::POST_METHOD || $method === RouteInterface::PUT_METHOD) { |
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($method === RouteInterface:: POST_METHOD) && \curl_setopt($ch, \CURLOPT_POST, true); |
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($method === RouteInterface ::PUT_METHOD) && \curl_setopt($ch, \CURLOPT_CUSTOMREQUEST, "PUT"); |
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\curl_setopt($ch, \CURLOPT_POSTFIELDS, $body); |
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} |
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//flatten the headers |
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$flattened_headers = []; |
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while (list($key, $value) = each($headers)) { |
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$flattened_headers[] = $key . ": " . $value; |
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} |
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\curl_setopt($ch, \CURLOPT_HTTPHEADER, $flattened_headers); |
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\curl_setopt($ch, \CURLOPT_RETURNTRANSFER, 1); |
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\curl_setopt($ch, \CURLOPT_SSLVERSION, 6); |
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$response = \curl_exec($ch); |
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if (\curl_errno($ch)) { // should be 0 |
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// curl ended with an error |
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$cerr = \curl_error($ch); |
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\curl_close($ch); |
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throw new \Exception("Curl failed with response: '" . $cerr . "'."); |
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} |
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// Decode JSON from Paystack: |
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$resp = \json_decode($response); |
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\curl_close($ch); |
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if (json_last_error() !== JSON_ERROR_NONE || !$resp->status) { |
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throw new \Exception("Paystack Request failed with response: '" . |
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((json_last_error() === JSON_ERROR_NONE) ? $resp->message : $response) . "'."); |
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} |
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return $resp; |
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} |
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} |
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