From 847f3f6714b96f949b03b6021cde0e2779a131d2 Mon Sep 17 00:00:00 2001
From: Abdo <abdo@abdnh.net>
Date: Fri, 20 Sep 2024 14:18:02 +0300
Subject: [PATCH] Fix FSRS progress update issues (#3420)

* Delay optimal FSRS params alert to ensure progress updates are reported

* Ensure progress updates arrive synchronously
---
 ts/lib/tslib/progress.ts                  | 12 +++++++++---
 ts/routes/deck-options/FsrsOptions.svelte |  2 +-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/ts/lib/tslib/progress.ts b/ts/lib/tslib/progress.ts
index 86381b264..cbf13e601 100644
--- a/ts/lib/tslib/progress.ts
+++ b/ts/lib/tslib/progress.ts
@@ -8,13 +8,19 @@ export async function runWithBackendProgress<T>(
     callback: () => Promise<T>,
     onUpdate: (progress: Progress) => void,
 ): Promise<T> {
-    const intervalId = setInterval(async () => {
+    let done = false;
+    async function progressCallback() {
         const progress = await latestProgress({});
         onUpdate(progress);
-    }, 100);
+        if (done) {
+            return;
+        }
+        setTimeout(progressCallback, 100);
+    }
+    setTimeout(progressCallback, 100);
     try {
         return await callback();
     } finally {
-        clearInterval(intervalId);
+        done = true;
     }
 }
diff --git a/ts/routes/deck-options/FsrsOptions.svelte b/ts/routes/deck-options/FsrsOptions.svelte
index 905f41c13..9c91d02e4 100644
--- a/ts/routes/deck-options/FsrsOptions.svelte
+++ b/ts/routes/deck-options/FsrsOptions.svelte
@@ -150,7 +150,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
                             )) ||
                         resp.weights.length === 0
                     ) {
-                        alert(tr.deckConfigFsrsParamsOptimal());
+                        setTimeout(() => alert(tr.deckConfigFsrsParamsOptimal()), 100);
                     }
                     if (computeWeightsProgress) {
                         computeWeightsProgress.current = computeWeightsProgress.total;