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 Board, Card, User


class CardStatus(BaseModel):
    __tablename__ = 'card_statuses'

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

    board_id: Mapped[int] = mapped_column(ForeignKey('boards.id'), nullable=False)
    board: Mapped['Board'] = relationship('Board', back_populates='statuses')


class CardStatusHistory(BaseModel):
    __tablename__ = 'cards_status_history'
    id: Mapped[int] = mapped_column(primary_key=True)

    card_id: Mapped[int] = mapped_column(ForeignKey('cards.id'), nullable=False, comment='ID карточки')
    card: Mapped['Card'] = relationship('Card', back_populates='status_history')

    user_id: Mapped[int] = mapped_column(ForeignKey('users.id'), nullable=False)
    user: Mapped['User'] = relationship('User')

    changed_at: Mapped[datetime] = mapped_column(nullable=False, comment='Дата и время когда произошла смена статуса')

    from_status_id: Mapped[int] = mapped_column(
        ForeignKey('card_statuses.id'),
        nullable=False,
        comment='Предыдущий статус',
    )
    from_status: Mapped[CardStatus] = relationship(
        'CardStatus',
        foreign_keys=[from_status_id],
        lazy='joined',
    )

    to_status_id: Mapped[int] = mapped_column(
        ForeignKey('card_statuses.id'),
        nullable=False,
        comment='Новый статус',
    )
    to_status: Mapped[CardStatus] = relationship(
        'CardStatus',
        foreign_keys=[to_status_id],
        lazy='joined',
    )

    next_status_deadline: Mapped[datetime] = mapped_column(
        comment='Дедлайн до которого сделку нужно перевести на следующий этап',
    )
    comment: Mapped[str] = mapped_column(nullable=False, comment='Комментарий', server_default='')