Notification decode

Author: bajb

src/Fident.php

@@ -1,6 +1,7 @@
 <?php
 namespace Fident\Web;
 
+use Fident\Web\Notifications\FidentNotification;
 use Fident\Web\UserData\FidentJwtData;
 use Packaged\Helpers\Objects;
 
@@ -62,6 +63,18 @@ public function decodeJwtPayload(string $rawJwt): ?FidentJwtData
     return $data;
   }
 
+  public function decodeNotification($requestBody): ?FidentNotification
+  {
+    $notification = json_decode($requestBody);
+    $data = Objects::property($notification, 'Data', '');
+    $sig = self::urlsafeB64Decode(Objects::property($notification, 'Signature', ''));
+    if(openssl_verify($data, $sig, $this->getConfig()->getPublicKey(), OPENSSL_ALGO_SHA256))
+    {
+      return FidentNotification::fromString($data);
+    }
+    return null;
+  }
+
   public static function urlsafeB64Decode($input)
   {
     $remainder = strlen($input) % 4;

src/Notifications/FidentNotification.php

@@ -0,0 +1,79 @@
+<?php
+namespace Fident\Web\Notifications;
+
+use Fident\Web\UserData\UserAttribute;
+use Packaged\Helpers\Objects;
+
+class FidentNotification
+{
+  protected $_id;
+  protected $_created;
+  protected $_username;
+  protected $_attributes;
+  protected $_type;
+
+  const SUCCESS_RESPONSE = 'con';
+
+  public static function fromString($rawNotificationData)
+  {
+    $notification = new static();
+    $notificationData = json_decode($rawNotificationData);
+    $notification->_id = Objects::property($notificationData, 'ID');
+    $notification->_created = Objects::property($notificationData, 'Created');
+    $notification->_username = Objects::property($notificationData, 'Username');
+    $notification->_type = Objects::property($notificationData, 'Type');
+    $notification->_attributes = [];
+    foreach(Objects::property($notificationData, 'Attributes', []) as $attr)
+    {
+      $notification->addAttribute(Objects::property($attr, 'Key'), Objects::property($attr, 'Value'));
+    }
+    return $notification;
+  }
+
+  public function addAttribute($key, $value)
+  {
+    $this->_attributes[$key] = new UserAttribute($key, $value);
+    return $this;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getId()
+  {
+    return $this->_id;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getCreated()
+  {
+    return $this->_created;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getUsername()
+  {
+    return $this->_username;
+  }
+
+  /**
+   * @return UserAttribute[]
+   */
+  public function getAttributes()
+  {
+    return $this->_attributes;
+  }
+
+  /**
+   * @return mixed
+   */
+  public function getType()
+  {
+    return $this->_type;
+  }
+
+}

src/UserData/UserAttribute.php

@@ -7,6 +7,12 @@ class UserAttribute
   protected $_key;
   protected $_value;
 
+  public function __construct($key = null, $value = null)
+  {
+    $this->_key = $key;
+    $this->_value = $value;
+  }
+
   /**
    * @return mixed
    */