import - whole system of syncing ranchers/herds/livestocks

common/generics.py

@@ -1,6 +1,11 @@
-from django.core.files.base import ContentFile
-from django.db.models.functions import TruncDate
 import base64
+from datetime import datetime
+from functools import lru_cache
+
+import jdatetime
+from django.core.files.base import ContentFile
+from django.utils import timezone
+from jdatetime import datetime as jalali_datetime
 
 
 def base64_to_image_file(base64_string, filename="image.jpg"):
@@ -14,3 +19,40 @@ def base64_to_image_file(base64_string, filename="image.jpg"):
 def get_client_ip(request):  # noqa
     forwarded = request.META.get('HTTP_X_FORWARDED_FOR')
     return forwarded.split(',')[0] if forwarded else request.META.get('REMOTE_ADDR')
+
+
+def shamsi_to_gregorian(shamsi_str: str) -> datetime:
+    """
+    Convert Shamsi string YYYY/MM/DD to Gregorian datetime
+    """
+    try:
+        year, month, day = map(int, shamsi_str.split('/'))
+        jalali_date = jdatetime.date(year, month, day)
+        gregorian_date = jalali_date.togregorian()
+        return datetime(gregorian_date.year, gregorian_date.month, gregorian_date.day)
+    except Exception as e:
+        return None
+
+
+@lru_cache(maxsize=50000)
+def shamsi_to_gregorian_cached(shamsi: str):
+    try:
+        y, m, d = map(int, shamsi.split('/'))
+        return jdatetime.date(y, m, d).togregorian()
+    except:
+        return None
+
+
+def parse_birthdate(jalali_str):
+    if not jalali_str:
+        return None
+
+    gregorian_dt = jalali_datetime.strptime(
+        jalali_str,
+        "%Y/%m/%d"
+    ).togregorian()
+
+    return timezone.make_aware(
+        gregorian_dt,
+        timezone.get_current_timezone()
+    )