notification app, api for device registration and fcm token

notifications/serializers.py

@@ -0,0 +1,28 @@
+"""
+notification serializer file
+"""
+# third party imports
+from rest_framework import serializers
+
+# local imports
+from notifications.utils import register_fcm_token
+
+
+class RegisterDevice(serializers.Serializer):
+    """
+    used to create and validate register device token
+    """
+    registration_id = serializers.CharField(max_length=250)
+    device_id = serializers.CharField(max_length=250)
+    type = serializers.ChoiceField(choices=["ios", "web", "android"])
+
+    class Meta:
+        """ meta class """
+        fields = ('registration_id', 'type', 'device_id')
+
+    def create(self, validated_data):
+        """ override this method to create device token for users """
+        registration_id = validated_data['registration_id']
+        device_type = validated_data['type']
+        return register_fcm_token(self.context['user_id'], registration_id,
+                                  validated_data['device_id'], device_type)