import uuid
from datetime import datetime, timezone
from sqlmodel import SQLModel, Field


class User(SQLModel, table=True):
    __tablename__ = "users"

    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    username: str = Field(max_length=32, unique=True, index=True)
    email: str = Field(unique=True, index=True)
    password_hash: str
    avatar_url: str | None = None
    fcm_token: str | None = None
    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))