import uuid
from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, String
from sqlalchemy.dialects.mysql import CHAR
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.database import Base


class EmailVerificationToken(Base):
    __tablename__ = "email_verification_tokens"

    id: Mapped[str] = mapped_column(CHAR(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    user_id: Mapped[str] = mapped_column(CHAR(36), ForeignKey("users.id"), index=True)
    token: Mapped[str] = mapped_column(String(255), unique=True, index=True)
    expires_at: Mapped[datetime] = mapped_column(DateTime)
    used_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.now)

    user: Mapped["User"] = relationship(back_populates="email_verification_tokens")