integrate webserver into cli

pkgs/clan-cli/clan_cli/webui/server.py

@@ -0,0 +1,41 @@
+import argparse
+import time
+import urllib.request
+import webbrowser
+from threading import Thread
+
+from fastapi import FastAPI
+
+# XXX: can we dynamically load this using nix develop?
+from uvicorn import run
+
+app = FastAPI()
+
+
+@app.get("/health")
+async def read_root() -> str:
+    return "OK"
+
+
+def defer_open_browser(base_url: str) -> None:
+    for i in range(5):
+        try:
+            urllib.request.urlopen(base_url + "/health")
+            break
+        except OSError:
+            time.sleep(i)
+    webbrowser.open(base_url)
+
+
+def start_server(args: argparse.Namespace) -> None:
+    if not args.no_open:
+        Thread(
+            target=defer_open_browser, args=(f"http://[{args.host}]:{args.port}",)
+        ).start()
+    run(
+        "clan_cli.webui.server:app",
+        host=args.host,
+        port=args.port,
+        log_level=args.log_level,
+        reload=args.reload,
+    )