From 5a0b9d8aaee0ba8d08c93579d0f35298d9f36283 Mon Sep 17 00:00:00 2001
From: "G.Ambatte" <sean@robertson-family.nz>
Date: Fri, 9 Oct 2026 20:28:04 +1300
Subject: [PATCH] Add debounced call to unsubscribe

---
 server/eventStreamSource.js | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/server/eventStreamSource.js b/server/eventStreamSource.js
index bfdcc8099..9d0574d40 100644
--- a/server/eventStreamSource.js
+++ b/server/eventStreamSource.js
@@ -1,10 +1,15 @@
 import { EventEmitter } from 'events';
+import _ from 'lodash';
 import { nanoid } from 'nanoid';
 
+const UNSUB_DELAY = 60000; //ms
+
 const Stream = new EventEmitter;
 
 // Create array of stream subscribers
-const subscribers = [];
+let subscribers = [];
+
+const debounceUnsub = _.debounce((id)=>{ unsubscribe(id); }, UNSUB_DELAY, { leading: false, trailing: true });
 
 // Listener functions
 const subscribe = function(res){
@@ -12,18 +17,29 @@ const subscribe = function(res){
 	subscribers.push({ id, 'stream': res });
 
 	res.write(`event: subscribe\ndata: { id: ${id} }\n\n`);
+
+	debounceUnsub(id);
 	return id;
 };
 
 const unsubscribe = function(id){
+	subscribers
+		.filter((sub)=>{return sub.id == id;})
+		.forEach((sub)=>{
+			sub.stream.write(`event: unsubscribe\ndata: { id: ${id} }\n\n`);
+		});
+
 	subscribers = subscribers.filter((sub)=>{ return sub.id != id; });
 };
 
 // Create global sendUpdate listener
 Stream.on('sendUpdate', (event, data)=>{
 	console.log('Event:', event, '\nData:', data);
-	subscribers.forEach((sub, idx)=>{
+	subscribers.forEach((sub)=>{
 		sub?.stream?.write(`event: ${event}\ndata: ${JSON.stringify(data)}\n\n`);
+
+		// invoke debounced unsub to delay execution
+		debounceUnsub(sub.id);
 	});
 });