feat/show nodeinfo

close #4

app/main.py

@@ -12,6 +12,7 @@ from fastapi import Response
 from fastapi.exceptions import HTTPException
 from sqlalchemy.util import monkeypatch_proxied_specials
 from starlette.responses import JSONResponse
+from typing import Any
 
 from loguru import logger
 
@@ -86,3 +87,34 @@ async def wellknown_webfinger(resource: str) -> JSONResponse:
         media_type="application/jrd+json; charset=utf-8",
         headers={"Access-Control-Allow-Origin": "*"},
     )
+
+@app.get("/.well-known/nodeinfo")
+async def well_known_nodeinfo() -> dict[str, Any]:
+    return {
+        "links": [
+            {
+                "rel": "http://nodeinfo.diaspora.software/ns/schema/2.0",
+                "href": f"{BASE_URL}/nodeinfo/2.0",
+            }
+        ]
+    }
+
+
+@app.get("/nodeinfo/2.0")
+async def nodeinfo(
+    db_session: AsyncSession = Depends(get_db_session),
+):
+    return JSONResponse(
+        {
+            "version": "2.0",
+            "software": {
+                "name": "foxhole",
+                "version": "0.0.1",
+            },
+            "protocols": ["activitypub"],
+            "services": {"inbound": [], "outbound": []},
+            "usage": {"users": {"total": 1}, "localPosts": 0}, #TODO
+            "openRegistrations": False,
+            "metadata": {},
+        },
+    )