Update app.py

app.py

@@ -1,10 +1,95 @@
+import subprocess
+import threading
+
 import gradio as gr
+import spaces
+import httpx
+from fastapi import Request, Response
+
+# -------------------------
+# ZeroGPU placeholder
+# -------------------------
+
+@spaces.GPU
+def dummy():
+    return "ok"
+
+# -------------------------
+# Node
+# -------------------------
+
+node = None
+
+def start_node():
+    global node
+
+    if node and node.poll() is None:
+        return "Already running"
+
+    node = subprocess.Popen(
+        ["node", "server.js"],
+        cwd="/home/user/app",
+    )
+
+    return "Started"
+
+threading.Thread(target=start_node, daemon=True).start()
+
+# -------------------------
+# UI
+# -------------------------
+
+with gr.Blocks(title="Node Proxy") as demo:
+    gr.Markdown("# Node Proxy")
+
+    status = gr.Textbox(value="Running")
+
+    gr.Button("Restart").click(
+        fn=start_node,
+        outputs=status
+    )
+
+# -------------------------
+# Proxy
+# -------------------------
+
+@demo.app.api_route(
+    "/node/{path:path}",
+    methods=["GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"],
+)
+async def proxy(path: str, request: Request):
+
+    body = await request.body()
+
+    headers = {
+        k: v
+        for k, v in request.headers.items()
+        if k.lower() not in (
+            "host",
+            "content-length",
+        )
+    }
+
+    async with httpx.AsyncClient(
+        follow_redirects=True,
+        timeout=None,
+    ) as client:
 
-with gr.Blocks() as demo:
-    gr.Markdown("test")
+        r = await client.request(
+            request.method,
+            f"http://127.0.0.1:8888/{path}",
+            params=request.query_params,
+            headers=headers,
+            content=body,
+        )
 
-print(gr.__version__)
-print(type(demo.app))
-print(hasattr(demo.app, "proxy_to_node"))
+    return Response(
+        content=r.content,
+        status_code=r.status_code,
+        headers=dict(r.headers),
+    )
 
-demo.launch(server_name="0.0.0.0", server_port=7860)
+demo.launch(
+    server_name="0.0.0.0",
+    server_port=7860,
+)