notification app, api for device registration and fcm token

notifications/utils.py

@@ -0,0 +1,17 @@
+"""
+notifications utils file
+"""
+# third party imports
+from fcm_django.models import FCMDevice
+
+# local imports
+
+
+def register_fcm_token(user_id, registration_id, device_id, device_type):
+    """ used to register the fcm device token"""
+    device, _ = FCMDevice.objects.update_or_create(device_id=device_id,
+                                                   defaults={'user_id': user_id, 'type': device_type,
+                                                             'active': True,
+                                                             'registration_id': registration_id})
+    return device
+