language-learning-app/api/app/outbound/postgres/entities/email_verification_token_entity.py

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import secrets
import uuid
from datetime import datetime, timedelta, timezone
from sqlalchemy import DateTime, ForeignKey, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column
from ..database import Base
TOKEN_TTL_HOURS = 24
class EmailVerificationToken(Base):
__tablename__ = "email_verification_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"),
nullable=False,
)
token: Mapped[str] = mapped_column(Text, nullable=False, unique=True)
expires_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
used_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
@staticmethod
def make(user_id: uuid.UUID) -> "EmailVerificationToken":
return EmailVerificationToken(
user_id=user_id,
token=secrets.token_urlsafe(32),
expires_at=datetime.now(timezone.utc) + timedelta(hours=TOKEN_TTL_HOURS),
)