import json
from pathlib import Path
import logging

logger = logging.getLogger('iottb.config')


class Config:
    DEFAULT_CONFIG = {
        "database_path": "~/.iottb.db",
        "log_level": "INFO"
    }

    def __init__(self, config_file=None):
        self.config_file = Path(config_file or "config.json")
        if not self.config_file.exists():
            self.create_default_config()
        else:
            self.config = self.load_config()

    def create_default_config(self):
        try:
            self.save_config(self.DEFAULT_CONFIG)
        except (IsADirectoryError, PermissionError) as e:
            logger.error(f"Error creating default config: {e}")
            raise

    def load_config(self):
        try:
            with open(self.config_file, "r") as file:
                return json.load(file)
        except IsADirectoryError as e:
            logger.error(f"Error loading config: {e}")
            raise
        except PermissionError as e:
            logger.error(f"Error loading config: {e}")
            raise

    def save_config(self, config):
        try:
            with open(self.config_file, "w") as f:
                json.dump(config, f, indent=2)
        except (IsADirectoryError, PermissionError) as e:
            logger.error(f"Error saving config: {e}")
            raise