diff --git a/core/scripts/webpanel/app.py b/core/scripts/webpanel/app.py
index a956359..cdd0e11 100644
--- a/core/scripts/webpanel/app.py
+++ b/core/scripts/webpanel/app.py
@@ -1,63 +1,65 @@
 #!/usr/bin/env python3
 
 import sys
-import os
-import secrets
-from fastapi import FastAPI
-from fastapi.templating import Jinja2Templates
+from fastapi import FastAPI, Depends
 from fastapi import Request
-from starlette.middleware.sessions import SessionMiddleware
 from starlette.staticfiles import StaticFiles
+from fastapi.templating import Jinja2Templates
+
+
+from config import CONFIGS  # Loads the configuration from .env
+from authentication.auth import AuthMiddleware  # Defines authentication middleware
+from dependency import get_templates, get_session_manager  # Defines dependencies across routers
+from exception_handler import setup_exception_handler  # Defines exception handlers
 
 # Append directory of cli_api.py to be able to import it
 HYSTERIA_CORE_DIR = '/etc/hysteria/core/'
 sys.path.append(HYSTERIA_CORE_DIR)
 
 import routers  # noqa: This import should be after the sys.path modification, because it imports cli_api
-import cli_api  # noqa
-
-# region Setup App
-app = FastAPI(debug=True)
-secret_key = os.getenv("SESSION_SECRET_KEY", secrets.token_urlsafe(32))
-
-app.mount('/assets', StaticFiles(directory='assets'), name='assets')
-templates = Jinja2Templates(directory='templates')
-
-app.add_middleware(SessionMiddleware, secret_key=secret_key)
-
-# endregion
 
 
-# region Routers
+def create_app() -> FastAPI:
+    '''
+    Create FastAPI app.
+    '''
 
-# Add API version 1 router
-app.include_router(routers.api.v1.api_v1_router, prefix='/api/v1', tags=['v1'])  # Add API version 1 router
-# Add user router
-app.include_router(routers.user.router, prefix='/users', tags=['users'])
+    # Set up FastAPI
+    app = FastAPI(
+        title='Hysteria Webpanel',
+        description='Webpanel for Hysteria',
+        version='0.1.0',
+        debug=CONFIGS.DEBUG
+    )
 
-# Add basic routes
+    # Set up static files
+    app.mount('/assets', StaticFiles(directory='assets'), name='assets')
+
+    # Set up exception handlers
+    setup_exception_handler(app)
+
+    # Set up authentication middleware
+    app.add_middleware(AuthMiddleware, session_manager=get_session_manager(), api_token=CONFIGS.API_TOKEN)
+
+    # Set up Routers
+    app.include_router(routers.login.router, prefix='', tags=['authentication'])  # Add authentication router
+    app.include_router(routers.user.router, prefix='/users', tags=['users'])  # Add user router
+    app.include_router(routers.api.v1.api_v1_router, prefix='/api/v1', tags=['v1'])  # Add API version 1 router
+
+    return app
 
 
-@app.get('/login')
-async def login(request: Request):
-    return templates.TemplateResponse('login.html', {'request': request})
+app: FastAPI = create_app()
 
 
-@app.get('/logout')
-async def logout(request: Request):
-    pass
+@app.get('/')
+async def index(request: Request, templates: Jinja2Templates = Depends(get_templates)):
+    return templates.TemplateResponse('index.html', {'request': request})
 
 
-@ app.get('/')
-async def index(request: Request):
-    users = cli_api.list_users()
-    return templates.TemplateResponse('index.html', {'request': request, 'users': users})
-
-
-@ app.get('/home')
+@app.get('/home')
 async def home(request: Request):
     return await index(request)
-# endregion
 
 
 if __name__ == '__main__':