models/resource.py

@@ -1,11 +1,8 @@
 # -*- coding: utf-8 -*-
 import logging
-from datetime import datetime
-from datetime import timedelta
+from datetime import datetime, timedelta, time
 from pytz import timezone, utc
-from datetime import datetime, time
 from collections import defaultdict
-from dateutil.relativedelta import relativedelta
 import pytz
 
 from odoo import models, fields
@@ -335,56 +332,36 @@ class ResourceCalendar(models.Model):
 
     def get_holidays_duration(self, start_dt, end_dt):
         """
-        Returns timedelta object which is duration of all holidays included into
-        specified period.
+        Returns the number of holiday days in the specified datetime range.
+        Converts datetime objects to date and calculates overlapping holiday days.
         """
+
+        start_date = start_dt.date()
+        end_date = end_dt.date()
+
         days = set()
-        holidays_ids = self.env["holidays.calendar.leaves"].search(
+
+        # Find all holidays that are marked as "is_holiday"
+        holidays = self.env["holidays.calendar.leaves"].search(
             [("type_transfer_day", "=", "is_holiday")]
         )
 
-        for holiday in holidays_ids:
-            # Transformation date to datetime
-            date_from = datetime(
-                year=holiday.date_from.year,
-                month=holiday.date_from.month,
-                day=holiday.date_from.day,
-                hour=0,
-                minute=0,
-                second=0,
-            )
-            date_to = datetime(
-                year=holiday.date_to.year,
-                month=holiday.date_to.month,
-                day=holiday.date_to.day,
-                hour=23,
-                minute=59,
-                second=59,
-            )
-            # Dates in database are without timezones, and time in fact for UTC timezone,
-            # so it should be added explicitly.
-            holiday_date_from = utc.localize(date_from) if date_from else None
-            holiday_date_to = utc.localize(date_to) if date_to else None
-            # Bring booth dates to the holiday timezone
-            if holiday_date_from and start_dt.tzinfo != holiday_date_from.tzinfo:
-                start_dt = start_dt.astimezone(holiday_date_from.tzinfo)
-            if holiday_date_to and end_dt.tzinfo != holiday_date_to.tzinfo:
-                end_dt = end_dt.astimezone(holiday_date_to.tzinfo)
-            # Check periods intersection
-            if (
-                holiday_date_from
-                and end_dt < holiday_date_from
-                or holiday_date_to
-                and start_dt > holiday_date_to
-            ):
+        for holiday in holidays:
+            holiday_start = holiday.date_from
+            holiday_end = holiday.date_to
+
+            # Ensure both dates are valid
+            if not holiday_start or not holiday_end:
                 continue
-            # Handle this holiday
-            start = start_dt.date()
-            if holiday_date_from:
-                start = max(start, holiday_date_from.date())
-            until = end_dt.date()
-            if holiday_date_to:
-                until = min(until, holiday_date_to.date())
-            for i in range((until - start + timedelta(1)).days):
-                days.add(start + timedelta(i))
+
+            # Check if the holiday range overlaps with the input range
+            if holiday_end < start_date or holiday_start > end_date:
+                continue
+
+            overlap_start = max(start_date, holiday_start)
+            overlap_end = min(end_date, holiday_end)
+
+            for i in range((overlap_end - overlap_start).days + 1):
+                days.add(overlap_start + timedelta(days=i))
+
         return timedelta(len(days))