From b37644924caf8cf2f0e825e308372fcf2dd4cfe2 Mon Sep 17 00:00:00 2001
From: Denis Panfilov <gh@flaticols.dev>
Date: Tue, 7 Oct 2025 09:12:06 +0200
Subject: [PATCH] auto-resume on tab/browser close

---
 index_tmpl.html | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/index_tmpl.html b/index_tmpl.html
index beaa2c7..e9d7d33 100644
--- a/index_tmpl.html
+++ b/index_tmpl.html
@@ -124,7 +124,26 @@
             {{- if .IsBreaking }}
             <button class="btn" title="resume from a break" onclick="javascript:resume();">
                 Resume from Breakpoint
-            </button>        
+            </button>
+            <script>
+                (function() {
+                    let sent = false;
+
+                    function sendBreak() {
+                        if (sent) return;
+                        sent = true;
+                        const blob = new Blob([JSON.stringify({action: 'resume'})], {type: 'application/json'});
+                        navigator.sendBeacon(window.location.href, blob);
+                    }
+
+                    document.addEventListener('visibilitychange', () => {
+                        if (document.visibilityState === 'hidden') sendBreak();
+                    });
+
+                    window.addEventListener('beforeunload', sendBreak);
+                    window.addEventListener('pagehide', sendBreak);
+                })();
+            </script>
             {{- end }}
         </p>