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<?php |
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namespace ker0x\CakeGcm\Controller\Component; |
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use Cake\Controller\Component; |
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use Cake\Controller\ComponentRegistry; |
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use Cake\Network\Http\Client; |
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use Cake\Utility\Hash; |
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use \Exception; |
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/** |
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* Gcm Component |
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* |
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*/ |
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class GcmComponent extends Component |
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{ |
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/** |
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* Default config |
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* |
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* @var array |
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*/ |
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protected $_defaultConfig = [ |
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'api' => [ |
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'key' => null, |
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'url' => 'https://gcm-http.googleapis.com/gcm/send' |
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], |
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'parameters' => [ |
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'collapse_key' => null, |
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'priority' => 'normal', |
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'delay_while_idle' => false, |
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'dry_run' => false, |
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'time_to_live' => 0, |
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'restricted_package_name' => null |
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], |
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'http' => [] |
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]; |
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/** |
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* List of parameters available to use in notification messages. |
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* |
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* @var array |
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*/ |
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protected $_allowedNotificationParameters = [ |
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'title', |
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'body', |
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'icon', |
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'sound', |
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'badge', |
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'tag', |
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'color', |
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'click_action', |
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'body_loc_key', |
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'body_loc_args', |
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'title_loc_key', |
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'title_loc_args' |
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]; |
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/** |
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* Error code and message. |
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* |
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* @var array |
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*/ |
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protected $_errorMessages = []; |
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/** |
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* Response of the request |
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* |
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* @var object |
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*/ |
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protected $_response = null; |
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/** |
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* Constructor |
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* |
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* @param ComponentRegistry $registry A ComponentRegistry |
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* @param array $config Array of configuration settings |
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*/ |
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public function __construct(ComponentRegistry $registry, array $config = []) |
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{ |
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parent::__construct($registry, $config); |
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$this->_errorMessages = [ |
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'400' => __('Error 400. The request could not be parsed as JSON.'), |
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'401' => __('Error 401. Unable to authenticating the sender account.'), |
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'500' => __('Error 500. Internal Server Error.'), |
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'503' => __('Error 503. Service Unavailable.') |
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]; |
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} |
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/** |
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* Send a downstream message to one or more devices |
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* |
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* @param mixed $ids Devices'ids |
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* @param array $payload The notification and/or some datas |
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* @param array $parameters Parameters for the GCM request |
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* @throws Exception |
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* @return bool |
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*/ |
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public function send($ids = null, array $payload = [], array $parameters = []) |
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{ |
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$ids = $this->_checkIds($ids); |
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if (!is_array($payload)) { |
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throw new Exception(__('Payload must be an array.')); |
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} |
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if (isset($payload['notification'])) { |
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$payload['notification'] = $this->_checkNotification($payload['notification']); |
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} |
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if (isset($payload['data'])) { |
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$payload['data'] = $this->_checkData($payload['data']); |
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} |
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$parameters = $this->_checkParameters($parameters); |
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$message = $this->_buildMessage($ids, $payload, $parameters); |
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return $this->_executePush($message); |
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} |
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/** |
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* Shortcut to send notification |
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* |
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* @param mixed $ids Devices'ids |
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* @param array $notification The notification |
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* @param array $parameters Parameters for the GCM request |
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* @return bool |
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*/ |
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public function sendNotification($ids = null, array $notification = [], array $parameters = []) |
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{ |
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return $this->send($ids, ['notification' => $notification], $parameters); |
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} |
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/** |
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* Shortcut to send datas |
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* |
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* @param mixed $ids Devices'ids |
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* @param array $data Some datas |
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* @param array $parameters Parameters for the GCM request |
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* @return bool |
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*/ |
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public function sendData($ids = null, array $data = [], array $parameters = []) |
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{ |
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return $this->send($ids, ['data' => $data], $parameters); |
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} |
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/** |
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* Return the response of the push |
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* |
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* @return string |
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*/ |
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public function response() |
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{ |
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if (array_key_exists($this->_response->code, $this->_errorMessages)) { |
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return $this->_errorMessages[$this->_response->code]; |
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} |
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return json_decode($this->_response->body, true); |
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} |
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/** |
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* Send the message throught a POST request to the GCM servers |
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* |
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* @param string $message The message to send |
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* @throws Exception |
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* @return bool |
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*/ |
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protected function _executePush($message) |
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{ |
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$options = $this->_getHttpOptions(); |
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$http = new Client(); |
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$this->_response = $http->post($this->config('api.url'), $message, $options); |
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return ($this->_response->code === '200') ? true : false; |
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} |
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/** |
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* Build the message from the ids, payload and parameters |
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* |
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* @param array|string $ids Devices'ids |
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* @param array $payload The notification and/or some datas |
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* @param array $parameters Parameters for the GCM request |
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* @return string |
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*/ |
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protected function _buildMessage($ids, $payload, $parameters) |
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{ |
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$message = (count($ids) > 1) ? ['registration_ids' => $ids] : ['to' => current($ids)]; |
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if (!empty($payload)) { |
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$message += $payload; |
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} |
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if (!empty($parameters)) { |
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$message += $parameters; |
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} |
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return json_encode($message); |
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} |
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/** |
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* Check if the ids are correct |
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* |
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* @param mixed $ids Devices'ids |
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* @throws Exception |
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* @return array |
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*/ |
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protected function _checkIds($ids) |
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{ |
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if (is_string($ids)) { |
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$ids = (array)$ids; |
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} |
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if (is_null($ids) || !is_array($ids) || empty($ids)) { |
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throw new Exception(__('Ids must be a string or an array with at least 1 token.')); |
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} |
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if (is_array($ids) && count($ids) > 1000) { |
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throw new Exception(__('Ids must contain at least 1 and at most 1000 registration tokens.')); |
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} |
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return $ids; |
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} |
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/** |
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* Check if the notification array is correctly build |
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* |
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* @param array $notification The notification |
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* @throws Exception |
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* @return array $notification |
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*/ |
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protected function _checkNotification(array $notification = []) |
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{ |
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if (!is_array($notification)) { |
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throw new Exception('Notification must be an array.'); |
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} |
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if (empty($notification) || !isset($notification['title'])) { |
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throw new Exception('Notification\'s array must contain at least a key title.'); |
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} |
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if (!isset($notification['icon'])) { |
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$notification['icon'] = 'myicon'; |
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} |
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foreach ($notification as $key => $value) { |
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if (!in_array($key, $this->_allowedNotificationParameters)) { |
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throw new Exception("The key {$key} is not allowed in notifications."); |
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} |
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} |
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return $notification; |
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} |
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/** |
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* Check if the data array is correctly build |
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* |
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* @param array $data Some datas |
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* @throws Exception |
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* @return array $data |
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*/ |
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protected function _checkData(array $data = []) |
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{ |
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if (!is_array($data)) { |
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throw new Exception('Data must ba an array.'); |
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} |
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if (empty($data)) { |
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throw new Exception('Data\'s array can\'t be empty.'); |
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} |
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// Convert all data into string |
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foreach ($data as $key => $value) { |
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$data[$key] = (string)$value; |
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} |
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return $data; |
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} |
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/** |
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* Check the parameters for the message |
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* |
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* @param array $parameters Parameters for the GCM request |
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* @throws Exception |
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* @return array $parameters |
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*/ |
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protected function _checkParameters(array $parameters = []) |
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{ |
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if (!is_array($parameters)) { |
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throw new Exception(__('Parameters must be an array.')); |
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} |
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$parameters = Hash::merge($this->config('parameters'), $parameters); |
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if (isset($parameters['time_to_live']) && !is_int($parameters['time_to_live'])) { |
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$parameters['time_to_live'] = (int)$parameters['time_to_live']; |
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} |
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if (isset($parameters['delay_while_idle']) && !is_bool($parameters['delay_while_idle'])) { |
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$parameters['delay_while_idle'] = (bool)$parameters['delay_while_idle']; |
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} |
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if (isset($parameters['dry_run']) && !is_bool($parameters['dry_run'])) { |
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$parameters['dry_run'] = (bool)$parameters['dry_run']; |
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} |
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return $parameters; |
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} |
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/** |
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* Return options for the HTTP request |
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* |
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* @throws Exception |
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* @return array $options |
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*/ |
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protected function _getHttpOptions() |
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{ |
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if ($this->config('api.key') === null) { |
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throw new Exception(__('No API key set. Push not triggered')); |
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} |
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$options = Hash::merge($this->config('http'), [ |
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'type' => 'json', |
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'headers' => [ |
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'Authorization' => 'key=' . $this->config('api.key'), |
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'Content-Type' => 'application/json' |
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] |
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]); |
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return $options; |
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} |
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} |
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