added failed loans endpoint

app/models/loan.py

@@ -9,6 +9,7 @@ from app.utils.logger import logger
 from app.extensions import db 
 from decimal import Decimal, ROUND_HALF_UP
 from datetime import datetime, timezone
+from app.config import settings
 
 class Loan(db.Model):
     __tablename__ = "loans"
@@ -46,7 +47,6 @@ class Loan(db.Model):
     verify_result = db.Column(db.String(10), nullable=True)
     verify_description = db.Column(db.String(100), nullable=True)
     reference = db.Column(db.String(50), nullable=True)
-
     total_penal_charge = db.Column(db.Float, default=0.0)
     last_penal_date = db.Column(db.DateTime, nullable=True)
 
@@ -102,6 +102,19 @@ class Loan(db.Model):
     @classmethod
     def get_loan_by_transaction_id(cls, transaction_id):
         return cls.query.filter_by(transaction_id=transaction_id).first()
+    
+    #update loan status
+    @classmethod
+    def update_status(cls, loan_id, status):
+        loan = cls.query.get(loan_id)
+        if loan:
+            loan.status = status
+            db.session.commit()
+            return loan.to_dict()
+        else:
+            raise ValueError(f"Loan with ID {loan_id} not found.")
+        
+        
 
     @classmethod
     def get_loan_by_loan_id(cls, loan_id):
@@ -250,6 +263,29 @@ class Loan(db.Model):
         except Exception as e:
             logger.error(f"Error fetching latest loan without disburse date: {e}")
             raise 
+        
+    @classmethod
+    def get_failed_disbursements(cls):
+        """
+        Get all loans with failed disbursement.
+        """
+        try:
+            last_time_interval = settings.FAILED_RETRY_TIME_INTERVAL_SECONDS or 0
+            failed_loans = cls.query.filter(
+            cls.disburse_date.is_(None),
+            cls.created_at >= datetime.utcnow() - timedelta(seconds=last_time_interval)
+        ).all()
+
+            if not failed_loans:
+                logger.info("No failed disbursements found.")
+                return []
+
+            logger.info(f"Found {len(failed_loans)} failed disbursements.")
+            return failed_loans
+
+        except Exception as e:
+            logger.error(f"Error fetching failed disbursements: {e}")
+            return []
 
     @classmethod
     def get_latest_loan_with_disburse_date(cls):