fix(summary): set all datetimes explicitly to UTC

commons/data_access_layer/cosmos_db.py

@@ -1,7 +1,7 @@
 import dataclasses
 import logging
 import uuid
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Callable, List, Dict
 
 import azure.cosmos.cosmos_client as cosmos_client
@@ -385,7 +385,7 @@ def init_app(app: Flask) -> None:
 
 
 def current_datetime() -> datetime:
-    return datetime.utcnow()
+    return datetime.now(timezone.utc)
 
 
 def datetime_str(value: datetime) -> str:
@@ -418,7 +418,7 @@ def get_current_month() -> int:
 
 def get_date_range_of_month(year: int, month: int) -> Dict[str, str]:
     first_day_of_month = 1
-    start_date = datetime(year=year, month=month, day=first_day_of_month)
+    start_date = datetime(year=year, month=month, day=first_day_of_month,tzinfo=timezone.utc)
 
     last_day_of_month = get_last_day_of_month(year=year, month=month)
     end_date = datetime(
@@ -429,6 +429,7 @@ def get_date_range_of_month(year: int, month: int) -> Dict[str, str]:
         minute=59,
         second=59,
         microsecond=999999,
+        tzinfo=timezone.utc
     )
 
     return {

time_tracker_api/time_entries/custom_modules/worked_time.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from commons.data_access_layer.cosmos_db import (
     current_datetime,
     current_datetime_str,
@@ -9,7 +9,7 @@
 
 
 def start_datetime_of_current_month() -> datetime:
-    return datetime(year=get_current_year(), month=get_current_month(), day=1,)
+    return datetime(year=get_current_year(), month=get_current_month(), day=1, tzinfo=timezone.utc)
 
 
 def start_datetime_of_current_week() -> datetime:
@@ -30,9 +30,12 @@ def start_datetime_of_current_month_str() -> str:
 
 
 def str_to_datetime(
-    value: str, conversion_format: str = '%Y-%m-%dT%H:%M:%S.%f'
+    value: str, conversion_format: str = '%Y-%m-%dT%H:%M:%S.%fZ'
 ) -> datetime:
-    return datetime.strptime(value, conversion_format)
+    if 'Z' in value:
+        return datetime.strptime(value, conversion_format).astimezone(timezone.utc)
+    else:
+        return datetime.fromisoformat(value).astimezone(timezone.utc)
 
 
 def date_range():