corrected interest charges on 3 months loan and made loan schedule active by default

app/models/loan.py

@@ -236,9 +236,15 @@ class Loan(db.Model):
         """
         Get the latest loan without a disbursement date.
         """
-        return cls.query.filter(
-            cls.disburse_date.is_(None)
-        ).order_by(cls.created_at.desc()).first()
+        logger.info("Fetching latest loan without disburse date")
+        
+        try:
+            return cls.query.filter(
+                cls.disburse_date.is_(None)
+            ).order_by(cls.created_at.desc()).first()
+        except Exception as e:
+            logger.error(f"Error fetching latest loan without disburse date: {e}")
+            raise 
 
     @classmethod
     def get_latest_loan_with_disburse_date(cls):

app/models/loan_repayment_schedule.py

@@ -215,7 +215,25 @@ class LoanRepaymentSchedule(db.Model):
             logger.error(f"Error updating repayment schedule {schedule_id} after loan repayment: {e}")
             raise
 
-        
+    @classmethod
+    def update_repayment_schedule_status_to_active(cls, schedule_id):
+        """
+        Update repayment schedule status to ACTIVE.
+        """
+        try:
+            schedule = cls.query.get(schedule_id)
+            if not schedule:
+                raise ValueError(f"Schedule with ID {schedule_id} does not exist.")
+            schedule.paid_status = RepaymentScheduleStatus.ACTIVE
+            schedule.updated_at = datetime.now(timezone.utc)
+            db.session.commit()
+            logger.info(f"Updated repayment schedule ID {schedule_id} status to ACTIVE")
+            return schedule.to_dict()
+        except Exception as e:
+            db.session.rollback()
+            logger.error(f"Error updating repayment schedule status for schedule {schedule_id}: {e}")
+            raise
+         
     @classmethod
     def update_repayment_schedule_balance(cls, schedule_id, amount_collected):
         """