refactor: split backend domains and add API behavior coverage

bot/app/web/session.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from typing import Optional
+
+from aiohttp import web
+
+from bot.app.web.webapp_auth import verify_webapp_session_token
+from config.settings import Settings
+
+WEBAPP_SESSION_COOKIE_NAME = "rw_webapp_session"
+
+
+def extract_authenticated_user_id(request: web.Request) -> Optional[int]:
+    settings: Settings = request.app["settings"]
+
+    auth_header = request.headers.get("Authorization", "")
+    if auth_header.startswith("Bearer "):
+        user_id = verify_webapp_session_token(
+            settings,
+            auth_header.removeprefix("Bearer ").strip(),
+        )
+        if user_id:
+            return user_id
+
+    session_cookie = request.cookies.get(WEBAPP_SESSION_COOKIE_NAME)
+    if session_cookie:
+        return verify_webapp_session_token(settings, session_cookie)
+
+    return None