From c1f4a82ee195f9d3e0c735cedfa669c38f8b8364 Mon Sep 17 00:00:00 2001
From: Taras Kushnir <tk.dev@mailbox.org>
Date: Tue, 11 Nov 2025 10:00:16 +0200
Subject: [PATCH] Add retry for fetching usage chart data

---
 web/layouts/settings-usage/scripts.html | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/web/layouts/settings-usage/scripts.html b/web/layouts/settings-usage/scripts.html
index 0ce80153..ff793945 100644
--- a/web/layouts/settings-usage/scripts.html
+++ b/web/layouts/settings-usage/scripts.html
@@ -209,11 +209,24 @@
                 this.setLegend(legend1, 'Requests', this.requestedColor);
             }
 
-            async fetchChartData(spinnerElement) {
+            async fetchChartData(spinnerElement, maxRetries = 3, baseDelay = 1000) {
                 if (spinnerElement) { spinnerElement.style.display = 'flex'; }
                 try {
-                    const response = await fetch('{{ partsURL $.Const.UserEndpoint $.Const.Stats | safeJS }}');
-                    return await response.json();
+                    for (let attempt = 1; attempt <= maxRetries; attempt++) {
+                        const response = await fetch('{{ partsURL $.Const.UserEndpoint $.Const.Stats | safeJS }}');
+                        if (response.ok) {
+                            return await response.json();
+                        }
+
+                        if (response.status === 429 || response.status === 503) {
+                            const retryDelay = baseDelay * Math.pow(2, attempt - 1);
+                            await new Promise(resolve => setTimeout(resolve, retryDelay));
+                            continue;
+                        }
+
+                        const errorText = await response.text();
+                        throw new Error(`Request failed (${response.status}): ${errorText || response.statusText}`);
+                    }
                 } catch (error) {
                     console.error('Error fetching chart data:', error);
                     return null;