import uuid
from datetime import UTC, datetime

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


class Base(DeclarativeBase):
    pass


def now() -> datetime:
    return datetime.now(UTC)


class User(Base):
    __tablename__ = "bff_users"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    email: Mapped[str] = mapped_column(String(320), unique=True, index=True)
    password_hash: Mapped[str] = mapped_column(String(512))
    display_name: Mapped[str] = mapped_column(String(160))
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now, onupdate=now)