From d9d1a5a7309d5b315f9906de3015b6478d800ae2 Mon Sep 17 00:00:00 2001
From: Nigel Ihza Firdausy <106657905+Ni-zav@users.noreply.github.com>
Date: Sun, 11 Oct 2026 10:59:36 +0700
Subject: [PATCH] fix(ui): show completion for library maintenance and Auto
 Sync (#875)

---
 crates/ui-egui/src/lib.rs            | 19 +++++++++++++++++++
 crates/ui-egui/src/tests_activity.rs | 19 +++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/crates/ui-egui/src/lib.rs b/crates/ui-egui/src/lib.rs
index f853fe166..5c801a126 100644
--- a/crates/ui-egui/src/lib.rs
+++ b/crates/ui-egui/src/lib.rs
@@ -427,6 +427,25 @@ impl LightcraftApp {
             // Keep it hidden after release; O / the overlay eye can show it again.
             self.ui.mask_overlay = false;
         }
+        if r.is_ok() {
+            // These commands finish synchronously, so their completion would otherwise
+            // be invisible once the activity stack is gone. Never show success on error.
+            let completed = match id {
+                "library.compact" => Some(format!("✓ {}", i18n::tr("Optimize Library"))),
+                "library.clearPreviews" => Some(format!("✓ {}", i18n::tr("Clear Preview Cache"))),
+                "develop.autoSync" => Some(format!(
+                    "{}: {}",
+                    i18n::tr("Auto Sync"),
+                    i18n::tr(if self.session.auto_sync { "On" } else { "Off" })
+                )),
+                _ => None,
+            };
+            if let Some(message) = completed {
+                // Menu clicks can arrive before the next frame updates last_time.
+                let now = self.tasks.repaint.as_ref().map(|ctx| ctx.input(|i| i.time)).unwrap_or(self.last_time);
+                self.ui.toast = Some((message, now + TOAST_SECONDS, None));
+            }
+        }
         if r.is_ok() && id == "photo.label" {
             let label = params.get("label").and_then(Value::as_str).and_then(lightcraft_catalog::ColorLabel::parse);
             let text = match label {
diff --git a/crates/ui-egui/src/tests_activity.rs b/crates/ui-egui/src/tests_activity.rs
index ca2a6de7e..8833ddc79 100644
--- a/crates/ui-egui/src/tests_activity.rs
+++ b/crates/ui-egui/src/tests_activity.rs
@@ -393,3 +393,22 @@ fn rows_added_later_grow_the_stack() {
         assert!(stack.contains_rect(r), "row {} at {r:?} is cut off by the stack at {stack:?}", g.id());
     }
 }
+
+#[test]
+fn immediate_library_commands_and_auto_sync_show_completion() {
+    let mut h = demo();
+    assert!(h.app.run("library.clearPreviews", json!({})).is_ok());
+    assert_eq!(h.app.ui.toast.as_ref().map(|t| t.0.as_str()), Some("✓ Clear Preview Cache"));
+
+    assert_eq!(h.app.run("develop.autoSync", json!({"on": true})).unwrap()["on"], true);
+    assert_eq!(h.app.ui.toast.as_ref().map(|t| t.0.as_str()), Some("Auto Sync: On"));
+
+    assert_eq!(h.app.run("develop.autoSync", json!({"on": false})).unwrap()["on"], false);
+    assert_eq!(h.app.ui.toast.as_ref().map(|t| t.0.as_str()), Some("Auto Sync: Off"));
+
+    // This demo has no on-disk library to optimize. A failed command must not
+    // report completion (or accidentally keep its preceding success toast).
+    h.app.ui.toast = None;
+    assert!(h.app.run("library.compact", json!({})).is_err());
+    assert!(h.app.ui.toast.is_none());
+}