Enhance leave request handling and improve error logging in RotaBuilder

gen_cons.py

@@ -69,8 +69,12 @@ def extract_leave_and_rota_from_calender(calender_df):
                     "date": date,
                     "worker": worker,
                 })
-            else:
-                logger.warning(f"Unknown leave value for {worker} on {date}: {leave_val}")
+            elif leave_val != "" and leave_val != "nan":
+                leave_requests.append({
+                    "date": date,
+                    "worker": worker,
+                })
+
 
     #print(leave_requests)
     return leave_requests, work_requests, rota_data
@@ -242,12 +246,12 @@ def load_workers():
             nwds=non_working_days,
         )
 
-        if initial == "L1":
-            w.oop = [OutOfProgramme(
-                start_date="2025-09-15",
-                end_date="2025-10-14",
-                reason="even out shifts",
-            )]
+        #if initial == "L1":
+        #    w.oop = [OutOfProgramme(
+        #        start_date="2025-09-15",
+        #        end_date="2025-10-14",
+        #        reason="even out shifts",
+        #    )]
 
         if initial == "ND":
             print(w.not_available_to_work)
@@ -331,6 +335,8 @@ def main(
     Rota.constraint_options["max_days_worked_per_week"] = 3
     # Rota.constraint_options["avoid_st2_first_month"] = True
 
+    #Rota.enable_unavailabilities = False
+
     Rota.add_shifts(
         SingleShift(
             sites=("rota a",),
@@ -368,7 +374,7 @@ def main(
             workers_required=1,
             length=12.5,
             days=days[5:],
-            balance_offset=1,
+            balance_offset=2,
             #constraint=[
             #    {"name": "pre", "options": 1},
             #    {"name": "post", "options": 1},

rota/shifts.py

@@ -431,6 +431,8 @@ class RotaBuilder(object):
 
         self.exported_rota_file = None
 
+        self.enable_unavailabilities = True
+
         self.MAX_SHIFTS_PER_DAY = 2
 
     def set_rota_constraint(self, constraint: str, value: Any):
@@ -987,6 +989,10 @@ class RotaBuilder(object):
                                     f"Worker '{worker.name}' has a forced assignment for shift '{shift_name}' on week {week}, day {day} (date: {self.get_date_by_week_day(week, day)}), which conflicts with a leave request.",
                                 )
 
+        if not self.enable_unavailabilities:
+            self.unavailable_to_work = set()
+            self.unavailable_to_work_reason = {}
+
         def availability_init(model, wid, week, day):
             # This needs to be higher than the max number of possible shifts per day
             if (wid, week, day) in self.unavailable_to_work:
@@ -3462,7 +3468,14 @@ class RotaBuilder(object):
         return self.shifts_by_name[name].length
 
     def get_date_by_week_day(self, week: WeekInt, day: DayStr) -> datetime.date:
-        return self.week_day_date_map[(week, day)]
+        try:
+            return self.week_day_date_map[(week, day)]
+        except KeyError:
+            self.add_warning(
+                "Rota/week day date map",
+                f"Week {week}, Day {day} not found in week_day_date_map",
+            )
+            return datetime.date(1900, 1, 1)
 
     def get_weeks_by_date_range(self, start_date: datetime.date | None, end_date: datetime.date | None) -> list[WeekInt]:
         """Get a list of weeks that fall within a date range.