mercore starter
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CHIEFSOFT\ameye
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from flask import request, jsonify
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from marshmallow import ValidationError
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from app.api.helpers.response_helper import ResponseHelper
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from app.api.services.base_service import BaseService
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from app.api.enums import TransactionType
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from app.models.transaction_offers import TransactionOffer
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from app.utils.logger import logger
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from app.api.schemas.select_offer import SelectOfferSchema
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from app.extensions import db
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from app.models import Offer
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from datetime import date
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from dateutil.relativedelta import relativedelta
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class SelectOfferService(BaseService):
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TRANSACTION_TYPE = TransactionType.SELECT_OFFER
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@staticmethod
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def process_request(data):
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"""
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Process the SelectOffer request.
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Args:
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data (dict): The request data.
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Returns:
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dict: A standardized response.
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"""
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try:
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with db.session.begin():
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validated_data = SelectOfferService.validate_data(
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data, SelectOfferSchema()
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)
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account_id = validated_data.get("accountId")
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customer_id = validated_data.get("customerId")
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amount = validated_data.get("requestedAmount")
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product_id = validated_data.get("productId")
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transaction_offer_id = validated_data.get("offerId")
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transaction_id = validated_data.get("transactionId")
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request_id = validated_data.get("requestId")
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offer_id = int(transaction_offer_id[5:]) # The last part is int
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#"offerId": "SAL30001129",
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if SelectOfferService.validate_account_ownership(
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account_id=account_id, customer_id=customer_id
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):
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transaction = SelectOfferService.log_transaction(
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validated_data=validated_data
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)
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if not transaction:
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logger.error(f"Failed to log transaction")
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return ResponseHelper.error(result_description="Failed to log transaction.")
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else:
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return ResponseHelper.error(result_description="Invalid Customer or Account")
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# Get the offer by product ID
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offer = Offer.get_offer_by_product_id(product_id)
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transaction_offer = TransactionOffer.get_transaction_offer(transaction_offer_id=offer_id)
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if not transaction_offer:
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logger.error(f"offer {offer_id} not found for customer {customer_id} and transaction {transaction_id}.")
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return ResponseHelper.error(result_description="Offer not found.")
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db.session.flush()
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if amount < transaction_offer.min_amount:
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logger.error(f"The amount {amount} is less than the minimum allowed offer amount {transaction_offer.min_amount}.")
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return ResponseHelper.error(result_description="The amount is less than the minimum allowed offer amount.")
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elif amount > transaction_offer.eligible_amount:
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logger.error(f"The amount {amount} is greater than the eligible offer amount {transaction_offer.eligible_amount}.")
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return ResponseHelper.error(result_description="The amount is greater than the eligible offer amount.")
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charges = SelectOfferService.calculate_charges(offer, amount)
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upfront_payment = charges["upfront_payment"]
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total_amount = charges["total_amount"]
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installment_amount = charges["installment_amount"]
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interest = charges["interest"]
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management = charges["management"]
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insurance = charges["insurance"]
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vat = charges["vat"]
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repayment_amount = charges["repayment_amount"]
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interest_amount = charges["interest_amount"]
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# Calculate the repayment dates
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tenor = offer.tenor
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start_date = date.today()
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# Convert tenor to months
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months = offer.schedule # tenor // 30
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recommended_repayment_dates = [
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(start_date + relativedelta(months=i + 1)).isoformat()
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for i in range(months)
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]
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offers = [
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{
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"offerId": transaction_offer_id,
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"productId": product_id,
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"amount": amount,
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"upfrontPayment": upfront_payment,
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"interestRate": offer.interest_rate,
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"interestFee": interest_amount,
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"managementRate": offer.management_rate,
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"managementFee": management["fee"],
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"insuranceRate": offer.insurance_rate,
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"insuranceFee": insurance["fee"],
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"VATRate": offer.vat_rate,
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"VATAmount": vat["fee"],
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"recommendedRepaymentDates": recommended_repayment_dates,
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"repaymentAmount": repayment_amount,
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"installmentAmount": installment_amount,
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"totalRepaymentAmount": total_amount,
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}
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]
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# "offerId": offer.id,
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# "productId": product_id,
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# "amount": amount,
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# "upfrontPayment": upfront_payment,
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# "interestRate": interest["rate"],
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# "managementRate": management["rate"],
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# "managementFee": management["fee"],
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# "insuranceRate": insurance["rate"],
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# "insuranceFee": insurance["fee"],
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# "VATRate": vat["rate"],
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# "VATAmount": vat["fee"],
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# "recommendedRepaymentDates": recommended_repayment_dates,
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# "installmentAmount": installment_amount,
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# "totalRepaymentAmount": total_amount,
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#
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# Business logic - selecting an offer
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response_data = {
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"outstandingDebtAmount": 0,
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"requestId": request_id,
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"transactionId": transaction_id,
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"customerId": customer_id,
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"accountId": account_id,
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"loan": offers,
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}
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db.session.commit()
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return ResponseHelper.success(data=response_data)
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except ValidationError as err:
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logger.error(f"Validation Error: {getattr(err, 'messages', str(err))}")
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db.session.rollback()
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return ResponseHelper.unprocessable_entity(result_description="Validation exception")
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except ValueError as err:
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logger.error(f"{getattr(err, 'messages', str(err))}")
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db.session.rollback()
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return ResponseHelper.error(result_description=str(err))
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except Exception as e:
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logger.error(f"An error occurred: {str(e)}", exc_info=True)
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db.session.rollback()
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return ResponseHelper.internal_server_error()
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