add tracing; one time lang call

src/game.rs

@@ -19,18 +19,18 @@ async fn index(
     messages: Messages,
     headers: HeaderMap,
 ) -> Response {
-    let lang = language(&cookies, &headers);
-    rust_i18n::set_locale(lang.to_locale());
-
+    tracing::info!("in /index");
     let (cookies, req) = backend.client_full(cookies, &headers).await;
+    tracing::info!("cookies = {cookies:#?}");
+    tracing::info!("req = {req:#?}");
     let client = req.client;
+    rust_i18n::set_locale(&req.lang.to_string());
 
     let sightings = backend.sightings_for_client(&client).await;
     let amount_total_cameras = backend.amount_total_cameras().await;
     let highscore = backend.highscore().await;
 
-    let lang = language(&cookies, &headers);
-    let mut page = Page::new(lang);
+    let mut page = Page::new(req.lang);
     page.messages(messages);
     let markup = page.content(html! {
         hgroup {
@@ -101,10 +101,9 @@ async fn game(
     messages: Messages,
     Path(uuid): Path<String>,
 ) -> Result<Redirect, Response> {
-    let lang = language(&cookies, &headers);
-    rust_i18n::set_locale(lang.to_locale());
-
-    let (cookies, client) = backend.client(cookies).await;
+    let (cookies, req) = backend.client_full(cookies, &headers).await;
+    let client = req.client;
+    rust_i18n::set_locale(req.lang.to_locale());
 
     let Ok(uuid) = Uuid::parse_str(&uuid) else {
         return Err(not_found(cookies, headers).await.into_response());
@@ -147,10 +146,9 @@ async fn set_name(
     headers: HeaderMap,
     Form(form): Form<NameForm>,
 ) -> Response {
-    let lang = language(&cookies, &headers);
-    rust_i18n::set_locale(lang.to_locale());
-
-    let (cookies, client) = backend.client(cookies).await;
+    let (cookies, req) = backend.client_full(cookies, &headers).await;
+    let client = req.client;
+    rust_i18n::set_locale(req.lang.to_locale());
 
     match backend.set_client_name(&client, &form.name).await {
         Ok(()) => messages.info("set-name-succ"),

src/main.rs

@@ -11,6 +11,7 @@ use std::{
 };
 use tower_http::services::ServeDir;
 use tower_sessions::{MemoryStore, SessionManagerLayer};
+use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt, EnvFilter};
 use uuid::Uuid;
 
 #[macro_use]
@@ -70,6 +71,7 @@ impl From<String> for Language {
     }
 }
 
+#[derive(Debug)]
 struct Req {
     client: Client,
     lang: Language,
@@ -192,6 +194,11 @@ impl Backend {
 
 #[tokio::main]
 async fn main() {
+    tracing_subscriber::registry()
+        .with(tracing_subscriber::fmt::layer())
+        .with(EnvFilter::from_default_env())
+        .init();
+
     let session_store = MemoryStore::default();
     let session_layer = SessionManagerLayer::new(session_store).with_secure(false);