import threading
from django.utils.deprecation import MiddlewareMixin

_thread_locals = threading.local()

def get_current_request():
    return getattr(_thread_locals, 'request', None)

def get_current_user():
    request = get_current_request()
    if request:
        return getattr(request, 'user', None)
    return None

class AuditMiddleware(MiddlewareMixin):
    def process_request(self, request):
        _thread_locals.request = request

    def process_response(self, request, response):
        if hasattr(_thread_locals, 'request'):
            del _thread_locals.request
        return response