from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, Integer, String, func
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base import Base


class PointLedger(Base):
    __tablename__ = "point_ledger"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(
        Integer, ForeignKey("users.id"), nullable=False
    )
    change: Mapped[int] = mapped_column(Integer, nullable=False)
    balance: Mapped[int] = mapped_column(Integer, nullable=False)
    reason: Mapped[str] = mapped_column(String(200), nullable=False)
    ref_type: Mapped[str | None] = mapped_column(String(50))
    ref_id: Mapped[int | None] = mapped_column(Integer)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now()
    )

    user = relationship("User", lazy="selectin")

    def __repr__(self) -> str:
        return f"<PointLedger {self.id} user={self.user_id} change={self.change}>"