from typing import TYPE_CHECKING

from sqlalchemy import BIGINT, TEXT, VARCHAR
from sqlalchemy.orm import Mapped, mapped_column, relationship

from db.base import Base

if TYPE_CHECKING:
    from db.models.sessions import Session


class User(Base):
    __tablename__ = "users"

    id: Mapped[int] = mapped_column(
        BIGINT, unique=True, autoincrement=True, nullable=False, primary_key=True
    )
    username: Mapped[str] = mapped_column(TEXT, unique=True, nullable=True)
    hashed_password: Mapped[str] = mapped_column(VARCHAR(255), nullable=True)
    telegram_id: Mapped[int] = mapped_column(BIGINT, unique=True, nullable=True)

    sessions: Mapped[list["Session"]] = relationship(back_populates="user", lazy="selectin")