Add update_tracking

Author: mllemango

shopify/resources/fulfillment.py

@@ -1,4 +1,5 @@
 from ..base import ShopifyResource
+import json
 
 
 class Fulfillment(ShopifyResource):
@@ -13,6 +14,24 @@ def complete(self):
     def open(self):
         self._load_attributes_from_response(self.post("open"))
 
+    def update_tracking(self, tracking_info, notify_customer):
+        fulfill = FulfillmentV2()
+        fulfill.id = self.id
+        fulfill.update_tracking(tracking_info, notify_customer)
+
 
 class FulfillmentOrders(ShopifyResource):
     _prefix_source = "/orders/$order_id/"
+
+class FulfillmentV2(ShopifyResource):
+    _singular = 'fulfillment'
+    _plural = 'fulfillments'
+    
+    def update_tracking(self, tracking_info, notify_customer):
+        body = {
+            "fulfillment": {
+                "tracking_info": tracking_info,
+                "notify_customer": notify_customer
+            }
+        }
+        self._load_attributes_from_response(self.post("update_tracking", json.dumps(body).encode()))