from datetime import datetime
import uuid

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

from app.core.database import Base


class Enrollment(Base):
    __tablename__ = "enrollments"

    id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
    user_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
    token_hash: Mapped[str] = mapped_column(String(128), unique=True, index=True)
    expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), index=True)
    used: Mapped[bool] = mapped_column(Boolean, default=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())