globals.py

from enum import Enum, auto

class GlobalKeys(Enum):
    IS_IDLE = auto()

class GlobalState:
    def __init__(self):
        self._state = {}
        
    def set_value(self, key: GlobalKeys, value):
        """Set a value for a given key."""
        if not isinstance(key, GlobalKeys):
            raise ValueError("key must be an instance of GlobalKeys enum")
        self._state[key] = value
        
    def get_value(self, key: GlobalKeys, default=None):
        """Get a value by key, return default if key does not exist."""
        if not isinstance(key, GlobalKeys):
            raise ValueError("key must be an instance of GlobalKeys enum")
        return self._state.get(key, default)
        
    def has_key(self, key: GlobalKeys):
        """Check if the given key exists in the state."""
        if not isinstance(key, GlobalKeys):
            raise ValueError("key must be an instance of GlobalKeys enum")
        return key in self._state

# Global instance of the GlobalState
global_state = GlobalState()