test it works for one

backend/src/dashboard/scripts/quick_one.py

@@ -1,14 +1,6 @@
-#from dashboard.services.file_manager import FileManager
-#from dashboard.services.json_reader import jsonReader
-#s3 = FileManager()
-
-#key, path, data = s3.download_and_read_latest()
-#hubspot_data = jsonReader(data)
-
-#df  = hubspot_data.generate_df_via_product_type("Empty Cavity - ECO4")
-
-
-#one = df.iloc(0)
-
-from dashboard.service
+from dashboard.services.file_manager import FileManager
+from dashboard.services.json_reader import jsonReader
+s3 = FileManager()
 
+key, path, data = s3.download_and_read_latest()
+hubspot_data = jsonReader(data)

backend/src/dashboard/services/hubspot_client_async.py

@@ -2,6 +2,8 @@ import logging
 import asyncio
 from hubspot.crm.associations import ApiException
 import hubspot
+from datetime import datetime
+
 
 class HubSpotClientAsync:
     API_CONCURRENCY = asyncio.Semaphore(5)   # globally limit concurrency
@@ -298,7 +300,7 @@ class HubSpotClientAsync:
         return results
 
     async def get_expected_commencement_history(self, deal_id: str):
-        """Fetch historical values for expected_commencement_date."""
+        """Fetch JSON-serializable historical values for expected_commencement_date."""
         deal = await self._run(
             self.client.crm.deals.basic_api.get_by_id,
             deal_id,
@@ -306,6 +308,16 @@ class HubSpotClientAsync:
             properties_with_history=["expected_commencement_date"]
         )
 
-        return deal.properties_with_history.get("expected_commencement_date", [])
- 
+        history = deal.properties_with_history.get("expected_commencement_date", [])
 
+        json_ready_history = []
+        for entry in history:
+            safe_entry = {}
+            for key, val in entry.items():
+                if isinstance(val, datetime):
+                    safe_entry[key] = val.isoformat()
+                else:
+                    safe_entry[key] = val
+            json_ready_history.append(safe_entry)
+
+        return json_ready_history