added overdue loan methods

app/models/loan_repayment_schedule.py

@@ -89,13 +89,50 @@ class LoanRepaymentSchedule(db.Model):
     @classmethod
     def get_overdue_repayment_schedule(cls):
         """
-        Get all overdue repayment schedules.
+        Get all overdue repayment schedules that are not  repaid.
         """
         try:
-            return cls.query.filter(cls.due_date < datetime.now(timezone.utc), cls.paid == False).all()
+            return cls.query.filter(cls.due_date < datetime.now(timezone.utc), cls.paid == False).order_by(cls.due_date.asc()).all()
         except Exception as e:
             logger.error(f"Error fetching overdue repayment schedules: {e}")
             return []
+    @classmethod
+    def get_active_overdue_repayment_schedule(cls):
+        """
+        Get all overdue repayment schedules that are active.
+        """
+        try:
+            return (
+                cls.query
+                .filter(
+                    cls.due_date < datetime.now(timezone.utc),
+                    cls.paid_status == RepaymentScheduleStatus.ACTIVE
+                )
+                .order_by(cls.due_date.asc())
+                .all()
+            )
+        except Exception as e:
+            logger.error(f"Error fetching active overdue repayment schedules: {e}")
+            return []
+    @classmethod
+    def get_partially_paid_overdue_repayment_schedule(cls):
+        """
+        Get all overdue repayment schedules that are partially paid.
+        """
+        try:
+            return (
+                cls.query
+                .filter(
+                    cls.due_date < datetime.now(timezone.utc),
+                    cls.paid_status == RepaymentScheduleStatus.PARTIALLY_PAID
+                )
+                .order_by(cls.due_date.asc())
+                .all()
+            )
+        except Exception as e:
+            logger.error(f"Error fetching partially paid overdue repayment schedules: {e}")
+            return []
+    
 
     @classmethod
     def get_repayment_schedule_by_transaction_id(cls, transaction_id):