from typing import Any, Dict


class PropertyTypeMixin:
    """
    Enforce type checking of attributes at runtime
    """
    _properties_type: Dict[str, Any] = {}

    def __setattr__(self, key, value):
        type_hint = self._properties_type.get(key)
        if type_hint and value and not isinstance(value, type_hint):
            err = (f'class {self.__class__.__name__}: Invalid type provided for attribute {key}. '
                   f'Expected {type_hint.__name__}, got {key} = {value} ({type(value)}).')
            raise AttributeError(err)
        super().__setattr__(key, value)