import datetime
from typing import TYPE_CHECKING

from sqlalchemy import ForeignKey
from sqlalchemy.orm import Mapped, mapped_column, relationship

from models import BaseModel
if TYPE_CHECKING:
    from models import Deal


class DealBillRequest(BaseModel):
    __tablename__ = 'deal_bill_requests'

    deal_id: Mapped[int] = mapped_column(ForeignKey('deals.id'),
                                         nullable=False,
                                         primary_key=True,
                                         unique=True)
    deal: Mapped['Deal'] = relationship(back_populates='bill_request')

    created_at: Mapped[datetime.datetime] = mapped_column(nullable=False)
    paid: Mapped[bool] = mapped_column(nullable=False, default=False)

    pdf_url: Mapped[str] = mapped_column(nullable=True)
    invoice_number: Mapped[str] = mapped_column(nullable=True)