VivianDee
57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
from datetime import datetime, timezone
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from app.api.enums.loan_status import LoanStatus
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from app.extensions import db
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from app.models.customer import Customer
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from app.models.loan import Loan
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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.sql import func
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class Repayment(db.Model):
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__tablename__ = 'repayments'
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id = db.Column(
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db.Integer,
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primary_key=True,
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autoincrement=True,
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)
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loan_id = db.Column(db.String(50), nullable=False)
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customer_id = db.Column(db.String(50), nullable=False)
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product_id = db.Column(db.String(20), nullable=True)
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created_at = db.Column(db.DateTime(timezone=True), server_default=func.now())
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updated_at = db.Column(db.DateTime(timezone=True), onupdate=func.now())
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transaction_id = db.Column(db.String(50), nullable=True)
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@classmethod
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def create_repayment(cls, customer_id, loan_id, product_id, transaction_id):
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# Check customer exists
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if not Customer.is_valid_customer(customer_id):
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raise ValueError("Invalid customer")
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# Check loan exists
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loan = Loan.get_customer_loan(loan_id = loan_id, customer_id = customer_id)
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# Check that the loan is active
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if loan.status != LoanStatus.ACTIVE:
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raise ValueError(f"Repayment cannot be processed. Loan status: ({loan.status})")
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repayment = cls(
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customer_id=customer_id,
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loan_id=loan_id,
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product_id=product_id,
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transaction_id = transaction_id
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)
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try:
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db.session.add(repayment)
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except IntegrityError as err:
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raise ValueError(f"Database integrity error: {err}")
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return repayment
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def __repr__(self):
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return f'<Repayment {self.id}>'
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