From 493f4bffbd67b96cd1a5c6a628f6cfdae1317e91 Mon Sep 17 00:00:00 2001
From: temi <temi.varghese@csiro.au>
Date: Mon, 28 Aug 2023 15:50:16 +1000
Subject: [PATCH] AtlasOfLivingAustralia/biocollect#1532 - added a continuous
 check for offline

---
 grails-app/assets/javascripts/utils.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/grails-app/assets/javascripts/utils.js b/grails-app/assets/javascripts/utils.js
index 448be72..21c18c1 100644
--- a/grails-app/assets/javascripts/utils.js
+++ b/grails-app/assets/javascripts/utils.js
@@ -289,4 +289,24 @@ function isOffline() {
     })
 
     return deferred.promise();
+}
+
+function checkOfflineForIntervalAndTriggerEvents (interval) {
+    interval = interval || 10000;
+    var isCurrentlyOffline = false;
+    return setInterval(function () {
+        isOffline().then(function () {
+            if (!isCurrentlyOffline) {
+                var event = new Event('offline');
+                document.dispatchEvent(event);
+                isCurrentlyOffline = true;
+            }
+        }, function () {
+            if (isCurrentlyOffline) {
+                var event = new Event('online');
+                document.dispatchEvent(event);
+                isCurrentlyOffline = false;
+            }
+        });
+    }, interval);
 }
\ No newline at end of file