from flask import request, jsonify
from marshmallow import ValidationError
from app.utils.logger import logger
from app.helpers.response_helper import ResponseHelper
from app.schemas.select_offer import SelectOfferSchema   

class SelectOfferService:
    @staticmethod
    def process_request(data):
        """
        Process the SelectOffer request.

        Args:
            data (dict): The request data.

        Returns:
            dict: A standardized response.
        """
        try:
            logger.info("Processing SelectOffer request")

            # Validate input data using the imported schema
            schema = SelectOfferSchema()
            validated_data = schema.load(data)  # Raises ValidationError if invalid

            offers = [
                    {
                    "offerId": "14451",
                    "productId": "2030",
                    "amount": 10000.0,
                    "upfrontPayment": 1000.0,
                    "interestRate": 3.0,
                    "managementRate": 1.0,
                    "managementFee": 1.0,
                    "insuranceRate": 1.0,
                    "insuranceFee": 100.0,
                    "vatRate": 7.5,
                    "vatAmount": 100.0,
                    "recommendedRepaymentDates": ["2022-11-30"],
                    "installmentAmount": 11000.0,
                    "totalRepaymentAmount": 11000.0
                    },
                    {
                    "offerId": "16645",
                    "productId": "2060",
                    "amount": 10000.0,
                    "upfrontPayment": 0.0,
                    "interestRate": 3.0,
                    "managementRate": 1.0,
                    "managementFee": 1.0,
                    "insuranceRate": 1.0,
                    "insuranceFee": 100.0,
                    "vatRate": 7.5,
                    "vatAmount": 100.0,
                    "recommendedRepaymentDates": ["2022-11-30", "2023-12-30"],
                    "installmentAmount": 5761.9,
                    "totalRepaymentAmount": 11523.8
                    },
                    {
                    "offerId": "122212",
                    "productId": "2090",
                    "amount": 10000.0,
                    "upfrontPayment": 0.0,
                    "interestRate": 10.0,
                    "managementRate": 1.0,
                    "managementFee": 1.0,
                    "insuranceRate": 1.0,
                    "insuranceFee": 100.0,
                    "vatRate": 7.5,
                    "vatAmount": 100.0,
                    "recommendedRepaymentDates": ["2022-11-30", "2022-12-30", "2023-01-29"],
                    "installmentAmount": 4021.15,
                    "totalRepaymentAmount": 12063.45
                    }
                ]

            # Business logic - selecting an offer
            response_data = {
                "outstandingDebtAmount": 0,
                "requestId": "202111170001371256908",
                "transactionId": "1231231321232",
                "customerId": "1256907",
                "accountId": "5948306019",
                "offers": offers,
                "resultCode": "00",
                "resultDescription": "Successful"
                }


            # return ResponseHelper.success(
            #     data=response_data,
            #     message="Offer selection completed successfully"
            # )

            return response_data

        except ValidationError as err:
            logger.error(f"Validation Error: {err.messages}")
            return jsonify({
                "message": "Validation exception"
                }) , 422

        except Exception as e:
            logger.error(f"An error occurred: {str(e)}", exc_info=True)
            return jsonify({
                "message": "Internal Server Error"
                }) , 500