fix: fix the static file mounting handler breaking the API (#1743)

memgpt/server/rest_api/app.py

@@ -1,12 +1,16 @@
+import importlib.util
 import json
 import logging
+import os
 import secrets
 from pathlib import Path
 from typing import Optional
 
 import typer
 import uvicorn
-from fastapi import FastAPI
+from fastapi import FastAPI, Request
+from fastapi.responses import FileResponse
+from starlette.middleware.base import BaseHTTPMiddleware
 from starlette.middleware.cors import CORSMiddleware
 
 from memgpt.server.constants import REST_DEFAULT_PORT
@@ -31,7 +35,6 @@
 from memgpt.server.rest_api.routers.v1.users import (
     router as users_router,  # TODO: decide on admin
 )
-from memgpt.server.rest_api.static_files import mount_static_files
 from memgpt.server.server import SyncServer
 from memgpt.settings import settings
 
@@ -55,6 +58,29 @@
 OPENAI_API_PREFIX = "/openai"
 
 
+class SmartStaticFilesMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        # List of API prefixes that should bypass static handling
+        api_prefixes = [API_PREFIX, OPENAI_API_PREFIX, ADMIN_PREFIX]
+        path = request.url.path
+
+        # Check if the request path starts with any API prefix
+        if any(path.startswith(prefix) for prefix in api_prefixes):
+            # If it's an API call, process normally
+            print(f"API request detected: {path}")
+            response = await call_next(request)
+        else:
+            print(f"Static request detected: {path}")
+            # Try to serve static files, catch any errors like 404, etc.
+            static_files_path = os.path.join(os.path.dirname(importlib.util.find_spec("memgpt").origin), "server", "static_files")
+            filepath = os.path.join(static_files_path, path.lstrip("/"))
+            if os.path.isfile(filepath):
+                return FileResponse(filepath)
+            else:
+                response = await call_next(request)
+        return response
+
+
 def create_application() -> "FastAPI":
     """the application start routine"""
 
@@ -72,6 +98,8 @@ def create_application() -> "FastAPI":
         allow_methods=["*"],
         allow_headers=["*"],
     )
+    # Usage in your create_application function:
+    app.add_middleware(SmartStaticFilesMiddleware)
 
     for route in v1_routes:
         app.include_router(route, prefix=API_PREFIX)
@@ -95,7 +123,7 @@ def create_application() -> "FastAPI":
     app.include_router(setup_auth_router(server, interface, password), prefix=API_PREFIX)
 
     # / static files
-    mount_static_files(app)
+    # mount_static_files(app)
 
     @app.on_event("startup")
     def on_startup():

memgpt/server/rest_api/static_files.py

@@ -21,11 +21,25 @@ def mount_static_files(app: FastAPI):
     static_files_path = os.path.join(os.path.dirname(importlib.util.find_spec("memgpt").origin), "server", "static_files")
     if os.path.exists(static_files_path):
         app.mount(
-            # "/",
-            "/app",
+            "/",
+            # "/app",
             SPAStaticFiles(
                 directory=static_files_path,
                 html=True,
             ),
             name="spa-static-files",
         )
+
+
+# def mount_static_files(app: FastAPI):
+#     static_files_path = os.path.join(os.path.dirname(importlib.util.find_spec("memgpt").origin), "server", "static_files")
+#     if os.path.exists(static_files_path):
+
+#         @app.get("/{full_path:path}")
+#         async def serve_spa(full_path: str):
+#             if full_path.startswith("v1"):
+#                 raise HTTPException(status_code=404, detail="Not found")
+#             file_path = os.path.join(static_files_path, full_path)
+#             if os.path.isfile(file_path):
+#                 return FileResponse(file_path)
+#             return FileResponse(os.path.join(static_files_path, "index.html"))