hover menu

src/controllers/cart.rs

@@ -253,10 +253,39 @@ async fn show(
     Ok((jar.add(cart_cookie(rebuilt)), response).into_response())
 }
 
+/// Mini-cart preview for the navbar hover dropdown. Lazy-loaded via htmx from
+/// the header; returns just the `shop/_cart_preview.html` fragment.
+#[debug_handler]
+async fn preview(
+    jar: CookieJar,
+    ViewEngine(v): ViewEngine<TeraView>,
+    State(ctx): State<AppContext>,
+) -> Result<Response> {
+    let (lines, valid, total) = resolve_cart(&ctx, &jar).await?;
+    let currency = lines
+        .first()
+        .and_then(|line| line["currency"].as_str())
+        .unwrap_or("EUR")
+        .to_string();
+    let rebuilt = serialize_cart(&valid);
+    let response = format::view(
+        &v,
+        "shop/_cart_preview.html",
+        json!({
+            "items": lines,
+            "total": format_price(total),
+            "currency": currency,
+            "lang": current_lang(&jar),
+        }),
+    )?;
+    Ok((jar.add(cart_cookie(rebuilt)), response).into_response())
+}
+
 pub fn routes() -> Routes {
     Routes::new()
         .add("/cart", get(show))
         .add("/cart/add", post(add))
         .add("/cart/update", post(update))
         .add("/cart/remove", post(remove))
+        .add("/partials/cart", get(preview))
 }