fix(backend): use timezone.now() for licensing and analytics timestamps

backend/backend/schema.py

@@ -1405,7 +1405,7 @@ def resolve_app_activity_chart(root, info, app_id, period=TimeRange.DAY):
         if not user_can_access_app(info.context.user.userId, app_id):
             raise GraphQLError("You don't have access to this app")
 
-        end_date = datetime.now()  # current time
+        end_date = timezone.now()  # current time
 
         # default values for period='day'
         # 24 hours before current time

backend/ee/licensing/utils.py

@@ -141,9 +141,9 @@ def activate_license(phase_license):
                 phase_license.signature_date, "%Y-%m-%d"
             ),
             "issuing_authority": phase_license.issuing_authority,
-            "issued_at": datetime.now(),
+            "issued_at": timezone.now(),
             "expires_at": phase_license.expires_at,
-            "activated_at": datetime.now(),
+            "activated_at": timezone.now(),
         }
 
         if phase_license.plan == PlanTier.PRO_PLAN.value:

backend/ee/licensing/verifier.py

@@ -2,6 +2,7 @@
 from nacl import encoding, signing, exceptions
 from .utils import PhaseLicense, parse_license_format
 from datetime import datetime
+from django.utils import timezone
 import json
 
 VERIFIER_KEYS = [
@@ -30,7 +31,7 @@ def verify_signature(public_key_hex, license_str):
         data["issued_at"] = datetime.strptime(data["issued_at"], "%Y-%m-%d").date()
         data["expires_at"] = datetime.strptime(data["expires_at"], "%Y-%m-%d").date()
 
-        if datetime.now().date() > data["expires_at"]:
+        if timezone.now().date() > data["expires_at"]:
             print("License is expired.")
             valid = False
         else: