"""Minimal configuration."""

import os
from dataclasses import dataclass


@dataclass
class Paths:
    """File paths."""
    input_folder: str
    output_folder: str
    boundingbox_dir: str = ""
    
    def __post_init__(self):
        self.input_folder = os.path.abspath(self.input_folder)
        self.output_folder = os.path.abspath(self.output_folder)


@dataclass
class OutputSettings:
    """Output settings."""
    save_images: bool = True
    plot_dpi: int = 100


class Config:
    """Minimal config."""
    
    def __init__(self):
        self.paths = Paths(input_folder="", output_folder="")
        self.output = OutputSettings()
    
    def get_device(self) -> str:
        """Get device."""
        import torch
        return "cuda" if torch.cuda.is_available() else "cpu"
    
    def validate(self) -> bool:
        """Validate."""
        if self.paths.input_folder and not os.path.exists(self.paths.input_folder):
            raise FileNotFoundError(f"Input folder not found: {self.paths.input_folder}")
        return True