SAW-4360 Added incoming calls support

Author: prostraction

examples/call.py

@@ -0,0 +1,12 @@
+from whatsapp_chatbot_python import GreenAPIBot, Notification
+
+bot = GreenAPIBot(
+    "1101000001", "d75b3a66374942c5b3c019c698abc2067e151558acbd412345"
+)
+
+
+@bot.router.incoming_call()
+def message_handler(notification: Notification) -> None:
+    print("Call from:", notification.event["from"], "with status", notification.event["status"])
+
+bot.run_forever()

whatsapp_chatbot_python/manager/router.py

@@ -23,6 +23,7 @@ def __init__(self, api: "GreenAPI", logger: logging.Logger):
         self.outgoing_message: AbstractObserver = Observer(self)
         self.outgoing_api_message: AbstractObserver = Observer(self)
         self.outgoing_message_status: AbstractObserver = Observer(self)
+        self.incoming_call: AbstractObserver = Observer(self)
 
         self.buttons: AbstractObserver = ButtonObserver(self)
 
@@ -33,7 +34,8 @@ def __init__(self, api: "GreenAPI", logger: logging.Logger):
             "incomingMessageReceived": self.message,
             "outgoingMessageReceived": self.outgoing_message,
             "outgoingAPIMessageReceived": self.outgoing_api_message,
-            "outgoingMessageStatus": self.outgoing_message_status
+            "outgoingMessageStatus": self.outgoing_message_status,
+            "incomingCall": self.incoming_call
         }
 
     def route_event(self, event: dict) -> None: