[add]: transaction id and due date

app/api/services/provide_loan.py

@@ -90,7 +90,7 @@ class ProvideLoanService(BaseService):
                             ]
                     loan_id = loan.id
 
-                    loan_charges = LoanCharge.create_charges_for_loan(loan_id = loan_id, charges = charges)
+                    loan_charges = LoanCharge.create_charges_for_loan(loan_id = loan_id, transaction_id = transaction_id, charges = charges)
 
 
                     # logger.error(f"********* We need to develop the fee array here")             

app/models/loan_charge.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timezone
+from datetime import datetime, timezone, timedelta
 from app.extensions import db
 from sqlalchemy.orm import relationship
 
@@ -8,11 +8,13 @@ class LoanCharge(db.Model):
 
     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)
     code = db.Column(db.String(50), nullable=False) 
     amount = db.Column(db.Float, default=0.0)
     percent = db.Column(db.Float, default=0.0)
     description = db.Column(db.Text, nullable=True)
     due = db.Column(db.Integer, nullable=False)
+    due_date = db.Column(db.DateTime, nullable=True)
     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))
 
@@ -24,7 +26,7 @@ class LoanCharge(db.Model):
     )
 
     @classmethod
-    def create_charges_for_loan(cls, loan_id, charges):
+    def create_charges_for_loan(cls, loan_id, transaction_id, referenced_amount = 0.0, charges):
         """
         Create loan charges for a given loan.
 
@@ -40,15 +42,27 @@ class LoanCharge(db.Model):
             raise ValueError("loan_id cannot be None")
 
         loan_charges = []
+        now = datetime.now(timezone.utc)
+
         for charge in charges:
+            due_days = charge.get("due", 0)
+            amount = charge.get("amount", 0.0)
+            percent = charge.get("percent", 0.0)
+
+            if amount == 0.0:
+                amount = (percent / 100.0) * referenced_amount
+
             charge_obj = cls(
                 loan_id=loan_id,
+                transaction_id=charge.get("transaction_id"),
                 code=charge.get("code"),
-                amount=charge.get("amount", 0.0),
-                percent=charge.get("percent", 0.0),
+                amount=amount,
+                percent=percent,
                 description=charge.get("description", ""),
-                due=charge.get("due", 0)
+                due=due_days,
+                due_date=now + timedelta(days=due_days)
             )
+
             db.session.add(charge_obj)
             loan_charges.append(charge_obj)