# credits model - deprecated, kept for backward compatibility
# this module is replaced by the subscription system

from decimal import Decimal
from typing import Optional, List
from pydantic import BaseModel


class SetCreditFormDetail(BaseModel):
    operator: str = ""
    api_name: str = ""
    api_params: dict = {}


class SetCreditForm(BaseModel):
    user_id: str
    credit: Decimal = Decimal("0")
    detail: Optional[SetCreditFormDetail] = None


class AddCreditForm(BaseModel):
    user_id: str
    amount: Decimal = Decimal("0")
    detail: Optional[SetCreditFormDetail] = None


class CreditModel(BaseModel):
    user_id: str
    credit: Decimal = Decimal("0")


class Credits:
    """
    Deprecated credits class.
    Kept for backward compatibility - returns dummy data.
    The subscription system now handles billing.
    """

    @classmethod
    def init_credit_by_user_id(cls, user_id: str) -> CreditModel:
        return CreditModel(user_id=user_id, credit=Decimal("0"))

    @classmethod
    def get_credit_by_user_id(cls, user_id: str) -> Optional[CreditModel]:
        return CreditModel(user_id=user_id, credit=Decimal("0"))

    @classmethod
    def set_credit_by_user_id(cls, form_data: SetCreditForm) -> CreditModel:
        return CreditModel(user_id=form_data.user_id, credit=form_data.credit)

    @classmethod
    def add_credit_by_user_id(cls, form_data: AddCreditForm) -> CreditModel:
        return CreditModel(user_id=form_data.user_id, credit=form_data.amount)

    @classmethod
    def list_credits_by_user_id(cls, user_ids: List[str]) -> List[CreditModel]:
        return [CreditModel(user_id=uid, credit=Decimal("0")) for uid in user_ids]