from datetime 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 Project, DealStatus, Deal


class Board(BaseModel):
    __tablename__ = "boards"

    id: Mapped[int] = mapped_column(primary_key=True)
    name: Mapped[str] = mapped_column(nullable=False)
    created_at: Mapped[datetime] = mapped_column(nullable=False)
    is_deleted: Mapped[bool] = mapped_column(default=False)
    ordinal_number: Mapped[int] = mapped_column(nullable=False)

    project_id: Mapped[int] = mapped_column(ForeignKey('projects.id'), nullable=False)
    project: Mapped["Project"] = relationship(
        "Project",
        back_populates="boards",
        lazy="selectin",
    )

    deal_statuses: Mapped[list["DealStatus"]] = relationship("DealStatus", back_populates="board", lazy="selectin", cascade="all,delete")

    deals: Mapped[list["Deal"]] = relationship("Deal", uselist=True, back_populates="board", lazy="selectin")