adding more comments

src/main.rs

@@ -20,12 +20,15 @@ use user::User;
 
 #[tokio::main]
 async fn main() {
-    let session_store = MemoryStore::default();
-    let session_layer = SessionManagerLayer::new(session_store).with_secure(false);
-
+    // for javascript and css
     let assets_dir = std::env::current_dir().unwrap().join("assets");
     let assets_svc = ServeDir::new(assets_dir.as_path());
 
+    // just for signups
+    let session_store = MemoryStore::default();
+    let session_layer = SessionManagerLayer::new(session_store).with_secure(true);
+
+    // the core application, defining the routes and handlers
     let app = Router::new()
         .nest_service("/assets", assets_svc)
         .route("/signup", get(get_signup).post(post_signup))
@@ -33,6 +36,7 @@ async fn main() {
         .layer(session_layer)
         .into_make_service();
 
+    // listing on the network
     let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
     let listener = tokio::net::TcpListener::bind(&addr).await.unwrap();
     axum::serve(listener, app).await.unwrap();