diff --git a/src/snek/app.py b/src/snek/app.py
index e14aa5f..a551e41 100644
--- a/src/snek/app.py
+++ b/src/snek/app.py
@@ -3,13 +3,13 @@ import logging
 import pathlib
 import ssl
 import uuid
+import signal
 from datetime import datetime
 from contextlib import asynccontextmanager
 
 from snek import snode
 from snek.view.threads import ThreadsView
 from snek.system.ads import AsyncDataSet
-
 logging.basicConfig(level=logging.DEBUG)
 from concurrent.futures import ThreadPoolExecutor
 from ipaddress import ip_address
@@ -31,11 +31,7 @@ from snek.sgit import GitApplication
 from snek.sssh import start_ssh_server
 from snek.system import http
 from snek.system.cache import Cache
-from snek.system.stats import (
-    middleware as stats_middleware,
-    create_stats_structure,
-    stats_handler,
-)
+from snek.system.stats import middleware as stats_middleware, create_stats_structure, stats_handler
 from snek.system.markdown import MarkdownExtension
 from snek.system.middleware import auth_middleware, cors_middleware, csp_middleware
 from snek.system.profiler import profiler_handler
@@ -47,11 +43,7 @@ from snek.system.template import (
 )
 from snek.view.about import AboutHTMLView, AboutMDView
 from snek.view.avatar import AvatarView
-from snek.view.channel import (
-    ChannelAttachmentView,
-    ChannelAttachmentUploadView,
-    ChannelView,
-)
+from snek.view.channel import ChannelAttachmentView,ChannelAttachmentUploadView, ChannelView
 from snek.view.docs import DocsHTMLView, DocsMDView
 from snek.view.drive import DriveApiView, DriveView
 from snek.view.channel import ChannelDriveApiView
@@ -183,12 +175,13 @@ class Application(BaseApplication):
         self.on_startup.append(self.prepare_asyncio)
         self.on_startup.append(self.start_user_availability_service)
         self.on_startup.append(self.start_ssh_server)
-        # self.on_startup.append(self.prepare_database)
+        #self.on_startup.append(self.prepare_database)
 
     async def prepare_stats(self, app):
-        app["stats"] = create_stats_structure()
+        app['stats'] = create_stats_structure()
         print("Stats prepared", flush=True)
 
+
     @property
     def uptime_seconds(self):
         return (datetime.now() - self.time_start).total_seconds()
@@ -232,10 +225,10 @@ class Application(BaseApplication):
         # app.loop = asyncio.get_running_loop()
         app.executor = ThreadPoolExecutor(max_workers=200)
         app.loop.set_default_executor(self.executor)
-        # for sig in (signal.SIGINT, signal.SIGTERM):
-        # app.loop.add_signal_handler(
-        #    sig, lambda: asyncio.create_task(self.services.container.shutdown())
-        # )
+        #for sig in (signal.SIGINT, signal.SIGTERM):
+            #app.loop.add_signal_handler(
+            #    sig, lambda: asyncio.create_task(self.services.container.shutdown())
+            #)
 
     async def create_task(self, task):
         await self.tasks.put(task)
@@ -251,6 +244,7 @@ class Application(BaseApplication):
                 print(ex)
             self.db.commit()
 
+
     async def prepare_database(self, app):
         await self.db.query_raw("PRAGMA journal_mode=WAL")
         await self.db.query_raw("PRAGMA syncnorm=off")
@@ -297,7 +291,9 @@ class Application(BaseApplication):
         self.router.add_view(
             "/channel/{channel_uid}/attachment.bin", ChannelAttachmentView
         )
-        self.router.add_view("/channel/{channel_uid}/drive.json", ChannelDriveApiView)
+        self.router.add_view(
+            "/channel/{channel_uid}/drive.json", ChannelDriveApiView
+        )
         self.router.add_view(
             "/channel/{channel_uid}/attachment.sock", ChannelAttachmentUploadView
         )
@@ -418,9 +414,9 @@ class Application(BaseApplication):
         )
 
         try:
-            context["nonce"] = request["csp_nonce"]
+            context["nonce"] = request['csp_nonce']
         except:
-            context["nonce"] = "?"
+            context['nonce'] = '?'
 
         rendered = await super().render_template(template, request, context)
 
@@ -470,14 +466,14 @@ class Application(BaseApplication):
 
     @asynccontextmanager
     async def no_save(self):
-        stats = {"count": 0}
-
+        stats = {
+            'count': 0
+        }
         async def patched_save(*args, **kwargs):
             await self.cache.set(args[0]["uid"], args[0])
-            stats["count"] = stats["count"] + 1
+            stats['count'] = stats['count'] + 1
             print(f"save is ignored {stats['count']} times")
             return args[0]
-
         save_original = self.services.channel_message.mapper.save
         self.services.channel_message.mapper.save = patched_save
         raised_exception = None
@@ -490,7 +486,6 @@ class Application(BaseApplication):
         if raised_exception:
             raise raised_exception
 
-
 app = Application(db_path="sqlite:///snek.db")
 
 
diff --git a/src/snek/service/channel_message.py b/src/snek/service/channel_message.py
index bbb870c..642f4e0 100644
--- a/src/snek/service/channel_message.py
+++ b/src/snek/service/channel_message.py
@@ -2,7 +2,6 @@ from snek.system.service import BaseService
 from snek.system.template import sanitize_html
 import time
 
-
 class ChannelMessageService(BaseService):
     mapper_name = "channel_message"
 
@@ -35,6 +34,7 @@ class ChannelMessageService(BaseService):
                 time.sleep(0.1)
                 print(ex, flush=True)
 
+
         while True:
             changed = 0
             async for message in self.find(is_final=False):
@@ -72,7 +72,7 @@ class ChannelMessageService(BaseService):
         try:
             template = self.app.jinja2_env.get_template("message.html")
             model["html"] = template.render(**context)
-            model["html"] = sanitize_html(model["html"])
+            model['html'] = sanitize_html(model['html'])
         except Exception as ex:
             print(ex, flush=True)
 
@@ -99,9 +99,9 @@ class ChannelMessageService(BaseService):
         if not user:
             return {}
 
-        # if not message["html"].startswith("<chat-message"):
-        # message = await self.get(uid=message["uid"])
-        # await self.save(message)
+        #if not message["html"].startswith("<chat-message"):
+            #message = await self.get(uid=message["uid"])
+            #await self.save(message)
 
         return {
             "uid": message["uid"],
@@ -129,7 +129,7 @@ class ChannelMessageService(BaseService):
         )
         template = self.app.jinja2_env.get_template("message.html")
         model["html"] = template.render(**context)
-        model["html"] = sanitize_html(model["html"])
+        model['html'] = sanitize_html(model['html'])
         return await super().save(model)
 
     async def offset(self, channel_uid, page=0, timestamp=None, page_size=30):
diff --git a/src/snek/system/ads.py b/src/snek/system/ads.py
index 80995d3..42b64a0 100644
--- a/src/snek/system/ads.py
+++ b/src/snek/system/ads.py
@@ -16,6 +16,7 @@ from typing import (
 from pathlib import Path
 import aiosqlite
 import unittest
+from types import SimpleNamespace
 import asyncio
 import aiohttp
 from aiohttp import web
@@ -102,7 +103,7 @@ class AsyncDataSet:
                 # No socket file, become server
                 self._is_server = True
                 await self._setup_server()
-        except Exception:
+        except Exception as e:
             # Fallback to client mode
             self._is_server = False
             await self._setup_client()
@@ -212,7 +213,7 @@ class AsyncDataSet:
         data = await request.json()
         try:
             try:
-                _limit = data.pop("_limit", 60)
+                _limit = data.pop("_limit",60)
             except:
                 pass
 
@@ -886,6 +887,7 @@ class AsyncDataSet:
         except:
             pass
 
+
         where_clause, where_params = self._build_where(where)
         order_clause = f" ORDER BY {order_by}" if order_by else ""
         extra = (f" LIMIT {_limit}" if _limit else "") + (
@@ -1207,3 +1209,4 @@ class TestAsyncDataSet(unittest.IsolatedAsyncioTestCase):
 
 if __name__ == "__main__":
     unittest.main()
+
diff --git a/src/snek/system/middleware.py b/src/snek/system/middleware.py
index 558cd3d..f3a13d8 100644
--- a/src/snek/system/middleware.py
+++ b/src/snek/system/middleware.py
@@ -9,7 +9,7 @@ from aiohttp import web
 @web.middleware
 async def csp_middleware(request, handler):
     nonce = secrets.token_hex(16)
-    origin = request.headers.get("Origin")
+    origin = request.headers.get('Origin')
     csp_policy = (
         "default-src 'self'; "
         f"script-src 'self' {origin} 'nonce-{nonce}'; "
@@ -25,9 +25,9 @@ async def csp_middleware(request, handler):
         "media-src *; "
         "manifest-src 'self';"
     )
-    request["csp_nonce"] = nonce
+    request['csp_nonce'] = nonce
     response = await handler(request)
-    # response.headers['Content-Security-Policy'] = csp_policy
+    #response.headers['Content-Security-Policy'] = csp_policy
     return response
 
 
@@ -37,7 +37,6 @@ async def no_cors_middleware(request, handler):
     response.headers.pop("Access-Control-Allow-Origin", None)
     return response
 
-
 @web.middleware
 async def cors_allow_middleware(request, handler):
     response = await handler(request)
@@ -49,7 +48,6 @@ async def cors_allow_middleware(request, handler):
     response.headers["Access-Control-Allow-Credentials"] = "true"
     return response
 
-
 @web.middleware
 async def auth_middleware(request, handler):
     request["user"] = None
@@ -59,7 +57,6 @@ async def auth_middleware(request, handler):
         )
     return await handler(request)
 
-
 @web.middleware
 async def cors_middleware(request, handler):
     if request.headers.get("Allow"):
diff --git a/src/snek/system/service.py b/src/snek/system/service.py
index 5934a6e..82c5d1c 100644
--- a/src/snek/system/service.py
+++ b/src/snek/system/service.py
@@ -1,4 +1,5 @@
 from snek.mapper import get_mapper
+from snek.model.user import UserModel
 from snek.system.mapper import BaseMapper
 
 
@@ -39,7 +40,7 @@ class BaseService:
             yield record
 
     async def get(self, *args, **kwargs):
-        if "deleted_at" not in kwargs:
+        if not "deleted_at" in kwargs:
             kwargs["deleted_at"] = None
         uid = kwargs.get("uid")
         if args:
@@ -49,7 +50,7 @@ class BaseService:
             if result and result.__class__ == self.mapper.model_class:
                 return result
             kwargs["uid"] = uid
-        print(kwargs, "ZZZZZZZ")
+        print(kwargs,"ZZZZZZZ")
         result = await self.mapper.get(**kwargs)
         if result:
             await self.cache.set(result["uid"], result)