"""
UserPasswordHistory model — stores hashed passwords to enforce history policy.
"""
from __future__ import annotations
from datetime import datetime

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

from src.apps.base.models.base import Base


class UserPasswordHistory(Base):
    """Stores the last N hashed passwords for each user to prevent reuse."""

    __tablename__ = "user_password_history"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )