64 lines
1.8 KiB
Python
64 lines
1.8 KiB
Python
|
# Python imports
|
||
|
|
import inspect
|
||
|
|
from typing import Dict, Type
|
||
|
|
import re
|
||
|
|
|
||
|
|
# Lib imports
|
||
|
|
|
||
|
|
# Application imports
|
||
|
|
from .singleton import Singleton
|
||
|
|
|
||
|
|
from .dto.base_event import BaseEvent
|
||
|
|
from .dto import code
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
class EventFactory(Singleton):
|
||
|
|
def __init__(self):
|
||
|
|
self._event_classes: Dict[str, Type[BaseEvent]] = {}
|
||
|
|
|
||
|
|
self._auto_register_events( code.__dict__.items() )
|
||
|
|
|
||
|
|
|
||
|
|
def register_event(self, event_type: str, event_class: Type[BaseEvent]):
|
||
|
|
self._event_classes[event_type] = event_class
|
||
|
|
|
||
|
|
def create_event(self, event_type: str, **kwargs) -> BaseEvent:
|
||
|
|
if event_type not in self._event_classes:
|
||
|
|
raise ValueError(f"Unknown event type: {event_type}")
|
||
|
|
|
||
|
|
event_class = self._event_classes[event_type]
|
||
|
|
event = event_class()
|
||
|
|
|
||
|
|
for key, value in kwargs.items():
|
||
|
|
if not hasattr(event, key):
|
||
|
|
raise ValueError(f"Event class {event_class.__name__} has no attribute '{key}'")
|
||
|
|
|
||
|
|
setattr(event, key, value)
|
||
|
|
|
||
|
|
return event
|
||
|
|
|
||
|
|
def _auto_register_events(self, events: dict):
|
||
|
|
for name, obj in events:
|
||
|
|
if not self._is_valid_event_class(obj): continue
|
||
|
|
|
||
|
|
event_type = self._class_name_to_event_type(name)
|
||
|
|
self.register_event(event_type, obj)
|
||
|
|
|
||
|
|
logger.debug(f"Auto-registered {len(self._event_classes)} event types")
|
||
|
|
|
||
|
|
def _is_valid_event_class(self, obj) -> bool:
|
||
|
|
return (
|
||
|
|
inspect.isclass(obj) and
|
||
|
|
issubclass(obj, BaseEvent) and
|
||
|
|
obj != BaseEvent
|
||
|
|
)
|
||
|
|
|
||
|
|
def _class_name_to_event_type(self, class_name: str) -> str:
|
||
|
|
base_name = class_name[:-5] if class_name.endswith('Event') else class_name
|
||
|
|
return re.sub(r'(?<!^)(?=[A-Z])', '_', base_name).lower()
|
||
|
|
|
||
|
|
|
||
|
|
Event_Factory = EventFactory()
|
||
|
|
Code_Event_Types = code
|