added repayment_schedule

app/models/loan_repayment_schedule.py

@@ -0,0 +1,104 @@
+from datetime import datetime, timezone
+from app.extensions import db
+from app.utils.logger import logger
+from sqlalchemy.exc import SQLAlchemyError
+# from dateutil.relativedelta import relativedelta
+
+class LoanRepaymentSchedule(db.Model):
+    __tablename__ = 'loan_repayment_schedules'
+
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    loan_id = db.Column(db.Integer, nullable=False)
+    transaction_id = db.Column(db.String(50), nullable=True)
+    product_id = db.Column(db.String(20), nullable=True)
+    installment_number = db.Column(db.Integer, nullable=False)
+    due_date = db.Column(db.DateTime, nullable=False)
+    installment_amount= db.Column(db.Float, default=0.0)
+    total_repayment_amount = db.Column(db.Float, default=0.0)
+    paid = db.Column(db.Boolean, default=False)
+    paid_at = db.Column(db.DateTime, nullable=True)
+    due_process_date = db.Column(db.DateTime, nullable=True)
+    due_process_count = db.Column(db.Integer, default=0)
+    created_at = db.Column(db.DateTime, default=datetime.now(timezone.utc))
+    updated_at = db.Column(db.DateTime, default=datetime.now(timezone.utc), onupdate=datetime.now(timezone.utc))
+
+
+
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'loan_id': self.loan_id,
+            'product_id': self.product_id,
+            'transaction_id': self.transaction_id,
+            'installment_number': self.installment_number,
+            'due_date': self.due_date.isoformat() if self.due_date else None,
+            'installment_amount': self.installment_amount,
+            'total_repayment_amount': self.total_repayment_amount,
+            'paid': self.paid,
+            'due_process_date': self.due_process_date.isoformat() if self.due_process_date else None,
+            'due_process_count': self.due_process_count,
+            'paid_at': self.paid_at.isoformat() if self.paid_at else None,
+            'created_at': self.created_at.isoformat() if self.created_at else None,
+            'updated_at': self.updated_at.isoformat() if self.updated_at else None
+        }
+
+    def __repr__(self):
+        return f'<LoanRepaymentSchedule Loan:{self.loan_id} Installment:{self.installment_number}>'
+    
+    @classmethod
+    def get_repayment_schedule_by_loan_id(cls, loan_id):
+        """
+        Get repayment schedule by loan ID
+        """
+        try:
+            return cls.query.filter_by(loan_id=loan_id).all()
+        except Exception as e:
+            logger.error(f"Error fetching repayment schedule for loan_id={loan_id}: {e}")
+            return []
+
+    
+    @classmethod
+    def get_repayment_schedule_by_transaction_id(cls, transaction_id):
+        """
+        Get repayment schedule by transaction ID
+        """
+        return cls.query.filter_by(transaction_id=transaction_id).all()
+    
+    @classmethod
+    def update_repayment_schedule_status(cls, schedule_id, paid=False):
+        """
+        Update repayment schedule status.
+        Args:
+            schedule_id (int): ID of the repayment schedule.
+            paid (bool): Whether the repayment is marked as paid or not.
+        Returns:
+            schedule (RepaymentSchedule | None): The updated schedule object, or None if not found.
+        """
+        try:
+            # Fetch the repayment schedule by ID
+            schedule = cls.query.get(schedule_id)
+
+            if schedule:
+                # Update payment status
+                schedule.paid = paid
+                schedule.paid_at = datetime.now(timezone.utc) if paid else None
+                if schedule.due_process_count is None:
+                    schedule.due_process_count = 0
+                schedule.due_process_count += 1
+                schedule.due_process_date = datetime.now(timezone.utc)
+
+                # Commit changes to the database
+                db.session.commit()
+
+            return schedule
+
+        except SQLAlchemyError as e:
+            # Rollback changes if something goes wrong at the DB level
+            db.session.rollback()
+            logger.error(f"Database error updating repayment schedule {schedule_id}: {e}")
+            return None
+
+        except Exception as e:
+            # Catch any other unexpected error
+            logger.error(f"Unexpected error updating repayment schedule {schedule_id}: {e}")
+            return None