add actioncable listening for real time events

apps/web/package.json

@@ -23,6 +23,7 @@
 		"vite": "catalog:"
 	},
 	"dependencies": {
+		"@rails/actioncable": "^7.2.100",
 		"@sentry/sveltekit": "^8.9.2",
 		"highlight.js": "^11.10.0",
 		"marked": "^10.0.0",

apps/web/src/routes/projects/[projectId]/branches/[branchId]/stack/[changeId]/+page.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
 	import DiffPatch from '$lib/components/DiffPatch.svelte';
 	import DiffPatchArray from '$lib/components/DiffPatchArray.svelte';
+	import { createConsumer } from '@rails/actioncable';
 	import { marked } from 'marked';
 	import { onMount } from 'svelte';
 	import Gravatar from 'svelte-gravatar';
@@ -13,12 +14,15 @@
 	let events: any = [];
 	let key: any = '';
 	let uuid: any = '';
+	let consumer;
 
 	export let data: any;
 
 	onMount(() => {
 		key = localStorage.getItem('gb_access_token');
 
+		listenToChat(key);
+
 		let projectId = data.projectId;
 		let branchId = data.branchId;
 		let changeId = data.changeId;
@@ -46,6 +50,21 @@
 		}
 	});
 
+	function listenToChat(token: string) {
+		// connect to actioncable to subscribe to chat events
+		let wsHost = env.PUBLIC_APP_HOST.replace('http', 'ws') + 'cable';
+		consumer = createConsumer(wsHost + '?token=' + token);
+		consumer.subscriptions.create(
+			{ channel: 'ChatChannel', change_id: data.changeId, project_id: data.projectId },
+			{
+				received(data: any) {
+					// todo: update chat window with new message
+					console.log('received', data);
+				}
+			}
+		);
+	}
+
 	function scrollToBottom() {
 		let chatWindow = document.querySelector<HTMLElement>('.chatWindow');
 		if (chatWindow) {