refactor admin router into separate file

also set admin secret using command line args

backend/src/main.rs

@@ -1,6 +1,7 @@
 use std::sync::mpsc;
 
 use clap::Parser;
+use nuchat::Config;
 use nuchat::app;
 use tokio::net::TcpListener;
 use tokio::signal;
@@ -17,11 +18,16 @@ struct Args {
     /// Host to run server on
     #[arg(long, default_value = "127.0.0.1")]
     host: String,
+
+    /// Admin secret to use, leave blank to disable
+    #[arg(long)]
+    admin_secret: Option<String>,
 }
 
 #[tokio::main]
 async fn main() {
     let args = Args::parse();
+    let config = BinConfig::from_args(args);
     tracing_subscriber::registry()
         .with(
             tracing_subscriber::EnvFilter::try_from_default_env().unwrap_or_else(|_| {
@@ -31,12 +37,12 @@ async fn main() {
         .with(tracing_subscriber::fmt::layer().with_target(false))
         .init();
 
-    let listener = TcpListener::bind(format!("{}:{}", args.host, args.port))
+    let listener = TcpListener::bind(format!("{}:{}", config.0.host, config.0.port))
         .await
         .unwrap();
     tracing::debug!("listening on {}", listener.local_addr().unwrap());
 
-    let (app, rx) = app();
+    let (app, rx) = app(&config.0);
     axum::serve(listener, app)
         .with_graceful_shutdown(shutdown_signal(rx))
         .await
@@ -77,3 +83,14 @@ async fn shutdown_signal(rx: mpsc::Receiver<bool>) {
     }
     info!("Shutting server down gracefully...");
 }
+
+struct BinConfig(Config);
+impl BinConfig {
+    fn from_args(args: Args) -> Self {
+        Self(Config {
+            port: args.port,
+            host: args.host,
+            admin_secret: args.admin_secret,
+        })
+    }
+}