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update

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This commit is contained in:
Azeez Muibi
2025-04-13 23:58:02 +01:00
parent 6f5b95771f
commit c00bc3ddbf
9 changed files with 563 additions and 53 deletions
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app/models/loan.py
+87 -17
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@@ -4,6 +4,7 @@ from app.models.customer import Customer
from app.models.account import Account
from sqlalchemy.exc import IntegrityError
from sqlalchemy.orm import relationship
from sqlalchemy import and_, or_, not_
from app.models import Customer
@@ -18,10 +19,15 @@ class Loan(db.Model):
customer_id = db.Column(db.String(50), nullable=False)
account_id = db.Column(db.String(50), nullable=False)
offer_id = db.Column(db.String(20), nullable=False)
principal_amount = db.Column(db.Float, nullable=False)
initial_loan_amount = db.Column(db.Float, nullable=False)
status = db.Column(db.String(20), default='pending')
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))
product_id = db.Column(db.String(20))
current_loan_amount = db.Column(db.Float)
default_penalty_fee = db.Column(db.Float)
continuous_fee = db.Column(db.Float)
due_date = db.Column(db.DateTime)
customer = relationship(
"Customer",
@@ -31,26 +37,32 @@ class Loan(db.Model):
)
@classmethod
def create_loan(cls, customer_id, account_id, offer_id, principal_amount, status='pending'):
def create_loan(cls, customer_id, account_id, offer_id, initial_loan_amount, status='pending',
product_id=None, current_loan_amount=None, default_penalty_fee=None,
continuous_fee=None, due_date=None):
# Check if customer exists
is_valid = Customer.is_valid_customer(customer_id)
if not is_valid:
raise ValueError("Customer does not exist")
# # Check for active loans
# has_active_loans = cls.has_active_loans(customer_id)
# if has_active_loans:
# raise ValueError("Customer has active loans")
# Create and save the loan
loan = cls(
customer_id=customer_id,
account_id=account_id,
offer_id=offer_id,
principal_amount=principal_amount,
status=status
initial_loan_amount=initial_loan_amount,
status=status,
product_id=product_id,
current_loan_amount=current_loan_amount or initial_loan_amount,
default_penalty_fee=default_penalty_fee,
continuous_fee=continuous_fee,
due_date=due_date
)
try:
@@ -59,7 +71,6 @@ class Loan(db.Model):
raise ValueError(f"Database integrity error: {err}")
return loan
@classmethod
def has_active_loans(cls, customer_id):
active_loans = cls.query.filter_by(
@@ -70,35 +81,89 @@ class Loan(db.Model):
if active_loans > 0:
return False
return True
@classmethod
def get_customer_loan(cls, loan_id, customer_id):
"""
Get customer's active loans.
"""
loan = cls.query.filter_by(id = loan_id, customer_id = customer_id).first()
loan = cls.query.filter_by(id=loan_id, customer_id=customer_id).first()
if not loan:
raise ValueError(f"Loan with ID {loan_id} does not exist or does not belong to customer {customer_id}.")
raise ValueError(f"Loan with ID {loan_id} does not exist or does not belong to customer {customer_id}.")
return loan
@classmethod
def update_status(cls, loan_id, status):
"""
Update the status of the loan with the given loan_id.
"""
# Retrieve loan
# Retrieve loan
loan = cls.query.get(loan_id)
if not loan:
raise ValueError(f"Loan with ID {loan_id} does not exist.")
if loan.status == status:
return
# Update loan status and the updated_at timestamp
loan.status = status
@classmethod
def get_all_loans(cls, customer_id=None, account_id=None, status=None, offer_id=None,
product_id=None, start_date=None, end_date=None, due_before=None, due_after=None):
"""
Get all loans with optional filtering
Args:
customer_id (str, optional): Filter by customer ID
account_id (str, optional): Filter by account ID
status (str, optional): Filter by loan status
offer_id (str, optional): Filter by offer ID
product_id (str, optional): Filter by product ID
start_date (datetime, optional): Filter by start date (created_at)
end_date (datetime, optional): Filter by end date (created_at)
due_before (datetime, optional): Filter loans due before this date
due_after (datetime, optional): Filter loans due after this date
Returns:
list: List of Loan objects
"""
query = cls.query
# Apply filters if provided
if customer_id:
query = query.filter(cls.customer_id == customer_id)
if account_id:
query = query.filter(cls.account_id == account_id)
if status:
query = query.filter(cls.status == status)
if offer_id:
query = query.filter(cls.offer_id == offer_id)
if product_id:
query = query.filter(cls.product_id == product_id)
if start_date:
query = query.filter(cls.created_at >= start_date)
if end_date:
query = query.filter(cls.created_at <= end_date)
if due_before:
query = query.filter(cls.due_date <= due_before)
if due_after:
query = query.filter(cls.due_date >= due_after)
# Order by created_at descending (newest first)
query = query.order_by(cls.created_at.desc())
return query.all()
def to_dict(self):
"""
Convert the Loan object to a dictionary format for JSON serialization.
@@ -108,11 +173,16 @@ class Loan(db.Model):
'customer_id': self.customer_id,
'account_id': self.account_id,
'offer_id': self.offer_id,
'principal_amount': self.principal_amount,
'initial_loan_amount': self.initial_loan_amount,
'current_loan_amount': self.current_loan_amount,
'status': self.status,
'product_id': self.product_id,
'default_penalty_fee': self.default_penalty_fee,
'continuous_fee': self.continuous_fee,
'due_date': self.due_date.isoformat() if self.due_date 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'<Loan {self.id}>'