import json
import uuid
from datetime import datetime
from pathlib import Path


class DeviceMetadata:
    def __init__(self, device_name, device_root_path):
        self.device_name = device_name
        self.device_short_name = device_name.lower().replace(' ', '_')
        self.device_id = str(uuid.uuid4())
        self.date_created = datetime.now().isoformat()
        self.device_root_path = Path(device_root_path)

    def to_dict(self):
        return self.__dict__

    def save_to_file(self):
        file_path = self.device_root_path / 'device_metadata.json'
        with open(file_path, 'w') as f:
            json.dump(self.to_dict(), f, indent=4)

    @classmethod
    def load_from_file(cls, file_path):
        with open(file_path, 'r') as f:
            data = json.load(f)
        return cls(**data)