"""User SQLAlchemy model."""
from datetime import datetime
from typing import Optional

from sqlalchemy import DateTime, String, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship
from sqlalchemy.sql import func

from app.db.database import Base


class User(Base):
    """User model for authentication and profile information."""

    __tablename__ = "users"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    username: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False)
    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
    avatar_url: Mapped[Optional[str]] = mapped_column(
        String(500), default="/static/default-avatar.png"
    )
    bio: Mapped[Optional[str]] = mapped_column(Text, default="")
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        server_default=func.now(),
        nullable=False,
    )

    def __repr__(self) -> str:
        return f"<User(id={self.id}, username='{self.username}')>"