import uuid
from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, String, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


class PasswordResetToken(Base):
    __tablename__ = "password_reset_tokens"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="CASCADE"), index=True)
    token_hash: Mapped[str] = mapped_column(String(64), unique=True, index=True, nullable=False)

    expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, index=True)
    used_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())