From 6d02123bd8a2ffb0cb67f15ee8e8bf2397e6362b Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Mon, 31 Oct 2022 11:14:26 -0700
Subject: keep socket connection alive

---
 src/routes/+layout.svelte | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

(limited to 'src/routes/+layout.svelte')

diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 5cc75b30..1cdf2a69 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -1,9 +1,9 @@
 <script>
 	import { SvelteToast } from '@zerodevx/svelte-toast';
 	import '../app.css';
-	import { onMount } from 'svelte';
-	import { connect } from '$lib/socket';
-	import { selectedRate, rate, user } from '$lib/store';
+	import { onDestroy, onMount } from 'svelte';
+	import { connect, send } from '$lib/socket';
+	import { last, selectedRate, rate, user } from '$lib/store';
 	import { page } from '$app/stores';
 	import { browser } from '$app/environment';
 	import { goto } from '$app/navigation';
@@ -33,13 +33,31 @@
 		locale.subscribe((lng) => {
 			if (lng) localStorage.setItem(localeLocalStorageKey, lng);
 		});
+
+		browser && count();
 	});
 
 	$: browser && connect(token);
+
+	let lost, timer;
+	let count = () => {
+    lost = (Date.now() - $last) > 10000
+		if (lost) connect(token);
+		send('heartbeat');
+		timer = setTimeout(count, 5000);
+	};
+
+	onDestroy(() => browser && clearTimeout(timer));
 </script>
 
 <SvelteToast options={{ reversed: true, intro: { y: 192 } }} />
 
+{#if lost}
+<div class="fixed bottom-12 right-12 text-red-600 bg-white z-50 px-4 py-2 rounded-full border">
+  Lost connection to server, try refreshing
+</div>
+{/if}
+
 <main data-sveltekit-prefetch>
 	<slot />
 </main>
-- 
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