Magento – List of REST API’s for Magento-1.9.1.1

REST API

Reasons:

• it is much easier to implement than SOAP as PHP notoriously does not always follow the same standards as - for instance - Microsoft products do. Also, dealing with SOAP implies dealing with XML, namespaces and WSDL. Of course it will work, if done properly, but the cost of developing this for iOS would be greater;
• SOAP is based on XML, and requires downloading (and perhaps caching) of a service definition file (also XML), and XML is mostly more verbose and therefore more bandwidth-consuming than REST data encoding, not to mention memory usage for parsing (if you use DOM parsers), decoding and in-memory object-based tree-like document representation. REST, at the other hand, is much less bandwidth and memory consumptive, which makes it more suitable for mobile devices;
• JSON would be great, but that would require for you to implement a whole new API interface at Magento side, which may have consequences with regards to Magento security as well, not to mention the complexity of it overall.

I would suggest to use the native Magento REST-based API, and eventually plug in it your custom services. This would be a more reliable (REST API is supported by Magento, it's tested by a wider range of customers, and Magento provides some updates - as security updates - for it along with releases) and cost-effective solution.

Good luck!

Below approach may help you:

Write the respective function in helper class.

    namespace PackageName\ModuleName\Helper;

    class Data extends \Magento\Framework\App\Helper\AbstractHelper
    {
        const API_ACCESS_KEY = "";//Api Access key for android.
        const PASSPHASE = ""; // passphase for IOS

        protected $dir;

        /**
         * @param \Magento\Framework\App\Helper\Context $context
         * @param \Magento\Framework\Filesystem\DirectoryList $dir
         */
        public function __construct(
          \Magento\Framework\App\Helper\Context $context,
          \Magento\Framework\Filesystem\DirectoryList $dir
        ) {
            $this->dir = $dir;
            parent::__construct($context);
        }

        /**
         * send push notification for ios
         */
        public function sendIosPushNotification($message,$devicetoken){
            $mediaPath = $this->dir->getPath('media').'/';
            $tCert = $mediaPath.'/iospemfile/pushcert.pem';// your certificates file location
            $ctx = stream_context_create();
            stream_context_set_option($ctx, 'ssl', 'local_cert', $tCert);
            stream_context_set_option($ctx, 'ssl', 'passphrase', self::PASSPHASE);
            $applegateway='ssl://gateway.sandbox.push.apple.com:2195';//for sanbox mode
            //$applegateway='ssl://gateway.push.apple.com:2195';//for production mode
            $fp = stream_socket_client($applegateway, $err, $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);
            if (!$fp)exit("Failed to connect: $err $errstr" . PHP_EOL);
              $body['aps'] = array(
              'alert' => $message,
              'sound' => 'default',
              'badge' => 1,
              );
            // Encode the payload as JSON
            $payload = json_encode($body);
            // Build the binary notification
            $msg = chr(0) . pack('n', 32) . pack('H*', $devicetoken) . pack('n', strlen($payload)) . $payload;
            // Send it to the server
            $result = fwrite($fp, $msg, strlen($msg));
            //set blocking
            stream_set_blocking($fp,0);
            //usleep(500000);
            //Check response
            $apple_error_response = fread($fp, 6);
            $error_response = unpack('Ccommand/Cstatus_code/Nidentifier', $apple_error_response); //unpack the error response (first byte 'command" should always be 8)
            // Close the connection to the server
            fclose($fp);
            if (!$result)
            return 'Message not delivered' . PHP_EOL;
            else
            return 'Message successfully delivered' . PHP_EOL;
        }

        /**
         * send push notification for android
         */
        public function sendAndroidPushNotification($message,$fcmtoken){
            $data = array('message' => $message,'title' => 'test title') ;
            $fields = array('data'  => $data ,'to' => $fcmtoken);

            $headers = array(
                                'Authorization: key=' . self::API_ACCESS_KEY,
                                'Content-Type: application/json'
                            );

            #Send Reponse To FireBase Server
            $ch = curl_init();
            curl_setopt( $ch,CURLOPT_URL, 'https://fcm.googleapis.com/fcm/send' );
            curl_setopt( $ch,CURLOPT_POST, true );
            curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
            curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
            curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
            curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );
            $result = curl_exec($ch );
            curl_close( $ch );
         }

    }

After that you can use those helper functions from anywhere by injecting the helper class in constructor of the where you want to use those functions:

If your helper class object is $this->notificationHelper then you can call the functions following way:

//for ios
 $msg = "test push for ios";
 $deviceToken = "iosdevicetoken";
 $this->notificationHelper->sendIosPushNotification($msg ,$deviceToken);

 //for android
 $msg = "test push for android";
 $fcmToken = "fcmToken ";
 $this->notificationHelper->sendAndroidPushNotification($msg ,$fcmToken );