from marshmallow import Schema, fields

class EligibilityCheckSchema(Schema):
    type = fields.Str(required=True, description="Request type")
    transactionId = fields.Str(data_key="transactionId", required=True, description="Transaction ID")
    countryCode = fields.Str(data_key="countryCode", required=True, description="Country code (ISO)")
    customerId = fields.Str(data_key="customerId", required=True, description="Customer ID")
    accountId = fields.Str(data_key="accountId", required=True, description="Account ID")
    msisdn = fields.Str(required=True, description="Mobile number")
    lienAmount = fields.Float(required=True, description="Amount for lien")
    channel = fields.Str(required=True, description="Transaction channel (USSD, Mobile, Web)")