"""Base model for all database models."""

from datetime import datetime
from typing import Any
from uuid import uuid4

from sqlalchemy import Column, DateTime
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import DeclarativeBase, declared_attr


class Base(DeclarativeBase):
    """Base class for all database models."""

    # Generate __tablename__ automatically from class name
    @declared_attr.directive
    def __tablename__(self) -> str:
        """Generate table name from class name."""
        # Convert CamelCase to snake_case
        name = self.__name__
        return "".join(["_" + c.lower() if c.isupper() else c for c in name]).lstrip("_")

    # Common columns for all models
    id: Any = Column(UUID(as_uuid=True), primary_key=True, default=uuid4)
    created_at: Any = Column(DateTime, default=datetime.utcnow, nullable=False)

    def dict(self) -> dict[str, Any]:
        """Convert model to dictionary."""
        return {c.name: getattr(self, c.name) for c in self.__table__.columns}