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<?php
class MC4WP_API_V3_Client {
/**
* @var string
*/
private $api_key;
/**
* @var string
*/
private $api_url = 'https://api.mailchimp.com/3.0/';
/**
* @var array
*/
private $last_response;
/**
* @var array
*/
private $last_request;
/**
* Constructor
*
* @param string $api_key
*/
public function __construct( $api_key ) {
$this->api_key = $api_key;
$dash_position = strpos( $api_key, '-' );
if ( $dash_position !== false ) {
$this->api_url = str_replace( '//api.', '//' . substr( $api_key, $dash_position + 1 ) . '.api.', $this->api_url );
}
}
/**
* @param string $resource
* @param array $args
*
* @return mixed
* @throws MC4WP_API_Exception
*/
public function get( $resource, array $args = array() ) {
return $this->request( 'GET', $resource, $args );
}
/**
* @param string $resource
* @param array $data
*
* @return mixed
* @throws MC4WP_API_Exception
*/
public function post( $resource, array $data ) {
return $this->request( 'POST', $resource, $data );
}
/**
* @param string $resource
* @param array $data
* @return mixed
* @throws MC4WP_API_Exception
*/
public function put( $resource, array $data ) {
return $this->request( 'PUT', $resource, $data );
}
/**
* @param string $resource
* @param array $data
* @return mixed
* @throws MC4WP_API_Exception
*/
public function patch( $resource, array $data ) {
return $this->request( 'PATCH', $resource, $data );
}
/**
* @param string $resource
* @return mixed
* @throws MC4WP_API_Exception
*/
public function delete( $resource ) {
return $this->request( 'DELETE', $resource );
}
/**
* @param string $method
* @param string $resource
* @param array $data
*
* @return mixed
*
* @throws MC4WP_API_Exception
*/
private function request( $method, $resource, array $data = array() ) {
$this->reset();
// don't bother if no API key was given.
if ( empty( $this->api_key ) ) {
throw new MC4WP_API_Exception( 'Missing API key', 001 );
}
$method = strtoupper( trim( $method ) );
$url = $this->api_url . ltrim( $resource, '/' );
$args = array(
'method' => $method,
'headers' => $this->get_headers(),
'timeout' => 20,
'sslverify' => apply_filters( 'mc4wp_use_sslverify', true ),
);
if ( ! empty( $data ) ) {
if ( in_array( $method, array( 'GET', 'DELETE' ), true ) ) {
$url = add_query_arg( $data, $url );
} else {
$args['headers']['Content-Type'] = 'application/json';
$args['body'] = json_encode( $data );
}
}
/**
* Filter the request arguments for all requests generated by this class
*
* @param array $args
*/
$args = apply_filters( 'mc4wp_http_request_args', $args, $url );
// perform request
$response = wp_remote_request( $url, $args );
// store request & response
$args['url'] = $url;
$this->last_request = $args;
$this->last_response = $response;
// parse response
$data = $this->parse_response( $response );
return $data;
}
/**
* @return array
*/
private function get_headers() {
global $wp_version;
$headers = array(
'Authorization' => sprintf( 'Basic %s', base64_encode( 'mc4wp:' . $this->api_key ) ),
'User-Agent' => sprintf( 'mc4wp/%s; WordPress/%s; %s', MC4WP_VERSION, $wp_version, home_url() ),
);
// Copy Accept-Language from browser headers
if ( ! empty( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) ) {
$headers['Accept-Language'] = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
}
return $headers;
}
/**
* @param array|WP_Error $response
*
* @return mixed
*
* @throws MC4WP_API_Connection_Exception|MC4WP_API_Resource_Not_Found_Exception|MC4WP_API_Exception
*/
private function parse_response( $response ) {
if ( $response instanceof WP_Error ) {
throw new MC4WP_API_Connection_Exception( $response->get_error_message(), (int) $response->get_error_code(), $this->last_request );
}
// decode response body
$code = (int) wp_remote_retrieve_response_code( $response );
$message = wp_remote_retrieve_response_message( $response );
$body = wp_remote_retrieve_body( $response );
// set body to "true" in case Mailchimp returned No Content
if ( $code < 300 && empty( $body ) ) {
$body = 'true';
}
$data = json_decode( $body );
if ( $code >= 400 ) {
// check for akamai errors
// {"type":"akamai_error_message","title":"akamai_503","status":503,"ref_no":"Reference Number: 00.950e16c3.1498559813.1450dbe2"}
if ( is_object( $data ) && isset( $data->type ) && $data->type === 'akamai_error_message' ) {
throw new MC4WP_API_Connection_Exception( $message, $code, $this->last_request, $this->last_response, $data );
}
if ( $code === 404 ) {
throw new MC4WP_API_Resource_Not_Found_Exception( $message, $code, $this->last_request, $this->last_response, $data );
}
// mailchimp returned an error..
throw new MC4WP_API_Exception( $message, $code, $this->last_request, $this->last_response, $data );
}
// throw exception if unable to decode response
if ( $data === null ) {
throw new MC4WP_API_Exception( $message, $code, $this->last_request, $this->last_response );
}
return $data;
}
/**
* Empties all data from previous response
*/
private function reset() {
$this->last_response = null;
$this->last_request = null;
}
/**
* @return string
*/
public function get_last_response_body() {
return wp_remote_retrieve_body( $this->last_response );
}
/**
* @return array
*/
public function get_last_response_headers() {
return wp_remote_retrieve_headers( $this->last_response );
}
/**
* @return array|WP_Error
*/
public function get_last_response() {
return $this->last_response;
}
}
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