Исправление ошибок, добавление ИИ-ассистента

library_service/middlewares/not_found_handler.py

@@ -0,0 +1,24 @@
+from fastapi import Request, Response, status, HTTPException
+from fastapi.responses import JSONResponse
+
+from library_service.settings import get_app
+from library_service.routers.misc import unknown
+
+
+async def not_found_handler(request: Request, exc: HTTPException):
+    """Middleware для обработки 404 ошибки"""
+    if exc.detail == "Not Found":
+        path = request.url.path
+
+        if path.startswith("/api/"):
+            return JSONResponse(
+                status_code=status.HTTP_404_NOT_FOUND,
+                content={"detail": "API endpoint not found", "path": path},
+            )
+        app = get_app()
+        return await unknown(request, app)
+
+    return JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail},
+    )