perf: navigation page

apps/common/utils/timezone.py

@@ -1,22 +1,21 @@
-import datetime
-
 import pytz
+from datetime import datetime, timedelta, timezone
 from django.utils import timezone as dj_timezone
 from rest_framework.fields import DateTimeField
 
-max = datetime.datetime.max.replace(tzinfo=datetime.timezone.utc)
+max = datetime.max.replace(tzinfo=timezone.utc)
 
 
-def astimezone(dt: datetime.datetime, tzinfo: pytz.tzinfo.DstTzInfo):
+def astimezone(dt: datetime, tzinfo: pytz.tzinfo.DstTzInfo):
     assert dj_timezone.is_aware(dt)
     return tzinfo.normalize(dt.astimezone(tzinfo))
 
 
-def as_china_cst(dt: datetime.datetime):
+def as_china_cst(dt: datetime):
     return astimezone(dt, pytz.timezone('Asia/Shanghai'))
 
 
-def as_current_tz(dt: datetime.datetime):
+def as_current_tz(dt: datetime):
     return astimezone(dt, dj_timezone.get_current_timezone())
 
 
@@ -36,6 +35,15 @@ def local_now_date_display(fmt='%Y-%m-%d'):
     return local_now().strftime(fmt)
 
 
+def local_zero_hour(fmt='%Y-%m-%d'):
+    return datetime.strptime(local_now().strftime(fmt), fmt)
+
+
+def local_monday():
+    zero_hour_time = local_zero_hour()
+    return zero_hour_time - timedelta(zero_hour_time.weekday())
+
+
 _rest_dt_field = DateTimeField()
 dt_parser = _rest_dt_field.to_internal_value
 dt_formatter = _rest_dt_field.to_representation