import json
import os


class Car:
    def __init__(self):
        config = self._load_config()
        self.model = config.get("car_model", "Yaris 2013")
        self.device_name = config.get("device_name", "Yaris OBD")
        self.obd = None

    def reload_runtime_config(self):
        """Refresh display-facing fields from the live device config store."""
        from . import app_device_config

        config = app_device_config.get_device_config()
        self.model = config.get("car_model", "Yaris 2013")
        self.device_name = config.get("device_name", "Yaris OBD")

    def _load_config(self):
        """Load device config from JSON file, return dict with defaults."""
        config_path = os.path.join(os.path.dirname(os.path.dirname(__file__)), "config", "device.json")
        try:
            if os.path.exists(config_path):
                with open(config_path, 'r') as f:
                    return json.load(f)
        except (IOError, json.JSONDecodeError):
            pass
        return {}