Add event type determination method to Utilities

src/TgBotLib/Classes/Utilities.php

@@ -5,21 +5,24 @@
 
     use Exception;
     use LogLib\Log;
+    use TgBotLib\Enums\EventType;
     use TgBotLib\Objects\Currency;
+    use TgBotLib\Objects\Update;
 
     class Utilities
     {
         /**
          * @var Currency[]|null
          */
-        private static $currencies_cache;
+        private static ?array $currencies_cache = null;
 
         /**
-         * Returns
+         * Retrieves the currency object associated with the given currency code.
          *
-         * @param string $code
-         * @return Currency
-         * @throws Exception
+         * @param string $code The currency code to look up.
+         * @return Currency The currency object corresponding to the given code.
+         * @throws Exception If the currency code is not found or fetching currencies fails.
+         * @deprecated Not used
          */
         public static function getCurrency(string $code): Currency
         {
@@ -43,8 +46,36 @@
             }
 
             if(!isset(self::$currencies_cache[strtolower($code)]))
+            {
                 throw new Exception("Currency $code not found");
+            }
 
             return self::$currencies_cache[strtolower($code)];
         }
+
+        /**
+         * Determines the type of event based on the provided update object.
+         *
+         * @param Update $update The update object containing event information.
+         * @return EventType The determined type of the event.
+         */
+        public static function determineEventType(Update $update): EventType
+        {
+            if($update->getRemovedChatBoost() !== null)
+            {
+                return EventType::REMOVED_CHAT_BOOST_EVENT;
+            }
+
+            if($update->getChatBoost() !== null)
+            {
+                return EventType::CHAT_BOOST_EVENT;
+            }
+
+            if($update->getChatJoinRequest() !== null)
+            {
+                return EventType::CHAT_JOIN_REQUEST_EVENT;
+            }
+
+            return EventType::UPDATE_EVENT;
+        }
     }