Switch from localtunnel to cloudflared, fix static file serving

- Replace localtunnel with cloudflared (no interstitial password page)
- Wait for "Registered tunnel connection" before starting bot
- Serve index.html at / instead of directory listing
- Remove localtunnel npm package build from flake.nix

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

flake.nix

@@ -19,22 +19,10 @@
           aiohttp
         ]);
 
-        localtunnel = pkgs.buildNpmPackage {
-          pname = "localtunnel";
-          version = "2.0.2";
-          src = pkgs.fetchFromGitHub {
-            owner = "localtunnel";
-            repo = "localtunnel";
-            rev = "v2.0.2";
-            hash = "sha256-6gEK1VjF25Kbe2drxbxUKDNJGqZ+OXgkulPkAkMR2+k=";
-          };
-          npmDepsHash = "sha256-R9FYkEe93oGF+dR7i1MxwzEW3EM3SasH/B6LLC2CNXM=";
-          dontNpmBuild = true;
-        };
       in
       {
         devShells.default = pkgs.mkShell {
-          packages = [ pythonEnv localtunnel ];
+          packages = [ pythonEnv pkgs.cloudflared ];
           shellHook = ''
             echo "💪 BigBiggerBiggestBot dev shell"
             echo "   Run:  python start.py    (server + tunnel + bot)"
@@ -46,7 +34,7 @@
         apps.default = {
           type = "app";
           program = toString (pkgs.writeShellScript "run-fitness-bot" ''
-            export PATH="${pkgs.lib.makeBinPath [ pythonEnv localtunnel ]}:$PATH"
+            export PATH="${pkgs.lib.makeBinPath [ pythonEnv pkgs.cloudflared ]}:$PATH"
             exec ${pythonEnv}/bin/python "$PWD/start.py"
           '');
         };

server.py

@@ -202,7 +202,12 @@ def create_app() -> web.Application:
     # Serve the webapp/ folder
     import pathlib
     webapp_dir = pathlib.Path(__file__).parent / "webapp"
-    app.router.add_static("/", webapp_dir, show_index=True)
+
+    async def index_handler(request):
+        return web.FileResponse(webapp_dir / "index.html")
+
+    app.router.add_get("/", index_handler)
+    app.router.add_static("/", webapp_dir)
 
     return app
 

start.py

@@ -62,13 +62,14 @@ def start_server(port: int, bot_token: str) -> subprocess.Popen:
 def start_tunnel(port: int) -> tuple[subprocess.Popen, str]:
     print(f"  Starting tunnel to port {port}...")
     proc = subprocess.Popen(
-        ["lt", "--port", str(port)],
+        ["cloudflared", "tunnel", "--url", f"http://localhost:{port}"],
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
         text=True,
     )
 
     url = None
+    connected = False
     deadline = time.time() + 30
     while time.time() < deadline:
         line = proc.stdout.readline()
@@ -78,16 +79,20 @@ def start_tunnel(port: int) -> tuple[subprocess.Popen, str]:
                 break
             continue
         line = line.strip()
-        print(f"  [tunnel] {line}")
-        match = re.search(r"https?://\S+", line)
-        if match:
-            url = match.group(0)
+        if line:
+            print(f"  [tunnel] {line}")
+        if not url:
+            match = re.search(r"https://\S+\.trycloudflare\.com", line)
+            if match:
+                url = match.group(0)
+        if "Registered tunnel connection" in line:
+            connected = True
             break
 
-    if not url:
+    if not url or not connected:
         proc.kill()
         print("\n  Could not get a tunnel URL.")
-        print("  Make sure localtunnel is working: lt --port 8080\n")
+        print("  Make sure cloudflared is installed: cloudflared tunnel --url http://localhost:8080\n")
         sys.exit(1)
 
     return proc, url