from flask import request, jsonify
from marshmallow import ValidationError
from app.utils.logger import logger
from app.api.schemas.repayment import RepaymentSchema
from app.api.services.base_service import BaseService
from app.api.enums import TransactionType      

class RepaymentService(BaseService):
    TRANSACTION_TYPE = TransactionType.REPAYMENT 

    @staticmethod
    def process_request(data):
        """
        Process the Repayment request.

        Args:
            data (dict): The request data.

        Returns:
            dict: A standardized response.
        """
        try:
            validated_data = RepaymentService.validate_data(data, RepaymentSchema())
            account_id = validated_data.get('accountId')
            customer_id =  validated_data.get('customerId')

            if (RepaymentService.validate_account_ownership(account_id = account_id, customer_id = customer_id)):
                transaction = RepaymentService.log_transaction(validated_data = validated_data)

                if not transaction:
                    logger.error(f"Failed to log transaction")
                    return jsonify({
                        "message": "Failed to log transaction."
                    }), 400
            else: 
                return jsonify({
                        "message": "Invalid Customer or Account"
                    }), 400

            # Simulated processing logic
            response_data = {
                "customerId": "CN621868",
                "productId": "101",
                "debtId": "273194670",
                "resultCode": "00",
                "resultDescription": "Successful"
            }

            # return ResponseHelper.success(
            #     data=response_data,
            #     message="Repayment processed successfully"
            # )

            return response_data

        except ValidationError as err:

            logger.error(f"Validation Error: {getattr(err, 'messages', str(err))}")

            return jsonify({
                "message": "Validation exception"
                }) , 422
        
        except  ValueError as err:
            logger.error(f"{getattr(err, 'messages', str(err))}")

            return jsonify({
                "message": str(err)
                }) , 400

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