1 files changed, 61 insertions, 0 deletions
diff --git a/modern/src/ReloadPrompt.tsx b/modern/src/ReloadPrompt.tsx
new file mode 100644
index 00000000..1f93f913
--- /dev/null
+++ b/modern/src/ReloadPrompt.tsx
@@ -0,0 +1,61 @@
+import { Snackbar, Button } from '@mui/material';
+import React from 'react'
+import { useTranslation } from './common/components/LocalizationProvider';
+
+import { useAttributePreference } from './common/util/preferences';
+
+import { useRegisterSW } from 'virtual:pwa-register/react'
+
+// Based on https://vite-pwa-org.netlify.app/frameworks/react.html
+function ReloadPrompt() {
+  const t = useTranslation();
+
+  // const serviceWorkerUpdateInterval = useAttributePreference('serviceWorkerUpdateInterval', 3600000);
+  const serviceWorkerUpdateInterval = 60000;
+
+  const {
+    offlineReady: [offlineReady, setOfflineReady],
+    needRefresh: [needRefresh, setNeedRefresh],
+    updateServiceWorker,
+  } = useRegisterSW({
+    onRegisteredSW(swUrl, r) {
+      console.log('serviceWorkerUpdateCheck', serviceWorkerUpdateInterval);
+
+      serviceWorkerUpdateInterval > 0 && r && setInterval(async () => {
+        if (!(!r.installing && navigator)) {
+          return;
+        }
+  
+        if (('connection' in navigator) && !navigator.onLine) {
+          return;
+        }
+  
+        const resp = await fetch(swUrl, {
+          cache: 'no-store',
+          headers: {
+            'cache': 'no-store',
+            'cache-control': 'no-cache',
+          },
+        });
+  
+        if (resp?.status === 200) {
+          await r.update();
+        }
+      }, serviceWorkerUpdateInterval)
+    }
+  });
+
+  return (
+    <Snackbar 
+      open={needRefresh} 
+      message={t('updateAvailable')}
+      action={(
+        <Button color="secondary" size="small" onClick={() => updateServiceWorker(true)}>
+          {t('sharedReload')}
+        </Button>
+      )}
+      />
+  );
+}
+
+export default ReloadPrompt;
+\ No newline at end of file