from datetime import datetime
from typing import Optional
from sqlalchemy import String, Boolean, DateTime, func
from sqlalchemy.orm import Mapped, mapped_column
from app.database import Base


class User(Base):
    __tablename__ = "users"
    id: Mapped[int] = mapped_column(primary_key=True)
    username: Mapped[str] = mapped_column(String(100), unique=True, nullable=False)
    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False)
    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
    role: Mapped[str] = mapped_column(String(20), default="user")  # admin | user
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    # Notification channels
    telegram_chat_id: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
    push_token: Mapped[Optional[str]] = mapped_column(String(512), nullable=True)