CHIEFSOFT\ameye
198 lines
8.8 KiB
Python
198 lines
8.8 KiB
Python
from flask import request, jsonify
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from marshmallow import ValidationError
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from app.api.integrations.kafka import KafkaIntegration
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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.customer import Customer
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from app.models.loan_charge import LoanCharge
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from app.utils.logger import logger
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from app.api.schemas.provide_loan import ProvideLoanSchema
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from threading import Thread
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from app.models import Loan, Offer, Charge , TransactionOffer, RACCheck
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from app.api.enums import LoanStatus
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from app.extensions import db
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from datetime import datetime, timezone
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from dateutil.relativedelta import relativedelta
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from app.models import LoanRepaymentSchedule
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from app.api.services.offer_analysis import OfferAnalysis
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from app.api.helpers.response_helper import ResponseHelper
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class ProvideLoanService(BaseService):
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TRANSACTION_TYPE = TransactionType.PROVIDE_LOAN
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@staticmethod
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def process_request(data):
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"""
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Process the ProvideLoan 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 = ProvideLoanService.validate_data(data, ProvideLoanSchema())
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account_id = validated_data.get('accountId')
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customer_id = validated_data.get('customerId')
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request_id = validated_data.get('requestId')
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collection_type = validated_data.get('collectionType')
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transaction_id = validated_data.get('transactionId')
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offer_id = validated_data.get('offerId')
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amount = validated_data.get("requestedAmount")
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product_id = validated_data.get("productId")
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channel = validated_data.get('channel')
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customer = Customer.is_valid_customer(customer_id)
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if (ProvideLoanService.validate_account_ownership(account_id = account_id, customer_id = customer_id)):
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rac_response = RACCheck.get_rac_check(customer_id = customer_id, account_id = account_id)
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try:
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transaction_offer, offer, eligible_amount, original_transaction = OfferAnalysis.get_offer(
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transaction_id=transaction_id,
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rac_response=rac_response,
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validated_data=validated_data
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)
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except ValueError as ve:
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logger.error(str(ve))
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return ResponseHelper.error(result_description=str(ve))
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if(amount < transaction_offer.min_amount):
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return ResponseHelper.error(result_description="The amount is less than the minimum allowed transaction amount.")
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elif amount > transaction_offer.max_amount:
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return ResponseHelper.error(result_description="The amount is greater than the maximum allowed transaction amount.")
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# transaction_offer_id = int(offer_id[5:]) # The last part is int
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# transaction_offer = TransactionOffer.is_valid_transaction_offer(transaction_offer_id)
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# if not transaction_offer:
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# logger.error(f"Invalid Transaction Offer")
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# return jsonify({
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# "message": "Invalid Transaction Offer."
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# }), 400
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# eligible_amount = transaction_offer.eligible_amount
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# offer = Offer.is_valid_offer( transaction_offer.offer_id)
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# if not offer:
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# logger.error(f"Invalid Offer")
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# return jsonify({
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# "message": "Invalid Offer."
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# }), 400
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# Log Transaction
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transaction = ProvideLoanService.log_transaction(validated_data=validated_data)
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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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db.session.flush()
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charges = ProvideLoanService.calculate_charges(offer, amount)
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upfront_fee = charges["upfront_payment"]
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repayment_amount = charges["repayment_amount"]
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#installment_amount = charges["installment_amount"]
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num_schedules = offer.schedule
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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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padded_id = str(transaction_id).zfill(12)
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loan_ref = f"{padded_id}{channel}{offer.product_id}"
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# Save the loan details
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loan = Loan.create_loan(
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customer_id = customer_id,
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account_id = account_id,
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offer_id = offer_id,
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product_id = offer.product_id,
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collection_type = collection_type,
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transaction_id = validated_data.get('transactionId'),
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original_transaction = transaction_offer.original_transaction,
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initial_loan_amount = validated_data.get('requestedAmount'),
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upfront_fee = upfront_fee,
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repayment_amount = repayment_amount,
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installment_amount = installment_amount,
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eligible_amount=eligible_amount,
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status = LoanStatus.ACTIVE,
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tenor = offer.tenor,
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reference = loan_ref
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)
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if not loan:
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logger.error(f"Failed to save loan details")
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return ResponseHelper.error(result_description="Failed to save loan details.")
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db.session.flush()
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current_product_id = offer.product_id
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schedule = LoanRepaymentSchedule.add_repayment_schedule(loan = loan, num_schedules = num_schedules, transaction_id = transaction_id)
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if not schedule:
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logger.error(f"Failed to create repayment schedule for loan ID {loan.id}")
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return ResponseHelper.error(result_description="Failed to generate loan repayment schedule.")
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# charges = Charge.get_offer_charges(offer.id)
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# logger.info(f"{charges}")
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loan_id = loan.id
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loan_charges = LoanCharge.create_charges_for_loan(loan_id = loan_id, transaction_id = transaction_id, referenced_amount = 800, charges = charges)
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else:
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return ResponseHelper.error(result_description="Invalid Customer or Account")
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response_data = {
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"requestId": request_id,
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"transactionId": transaction_id,
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"loanRef": loan_ref,
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"customerId": customer_id,
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"accountId": account_id,
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"msisdn": customer.msisdn
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}
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# KafkaIntegration.send_loan_request(loan_data = response_data, request_id = request_id)
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# Call Kafka in a background thread
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thread = Thread(target=ProvideLoanService.async_send_to_kafka, args=(response_data, request_id, "PROCESS_PAYMENT"))
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thread.start()
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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() |