feat: Create 'Websocket' class for client side websockets

src/lib/clientWebsocket.svelte.ts

@@ -0,0 +1,46 @@
+import type { TypeMessage, TypeFullMessage } from '$lib';
+import type { Socket } from 'socket.io-client';
+
+class Websocket {
+  private socket: Socket;
+  public messages: TypeMessage[] = $state([]);
+  private channel: string = '';
+
+  constructor(socket: Socket) {
+    this.socket = socket;
+  }
+
+  connect() {
+    this.socket.on('message', (data: TypeFullMessage) => {
+      console.log('[ws] message received', data);
+      if (data.channel == this.channel) {
+        this.loadMessage(data);
+      }
+    });
+  }
+
+  // Change the current channel
+  updateChannel(newChannel: string) {
+    this.channel = newChannel;
+    this.messages = [];
+  }
+
+  // Add message to local messages array
+  loadMessage(newMsg: TypeMessage) {
+    this.messages = [
+      {
+        message: newMsg.message,
+        imageSrc: newMsg.imageSrc,
+        user: newMsg.user,
+      },
+      ...this.messages,
+    ];
+  }
+
+  // Send a message
+  sendMessage(user: string, msg: string) {
+    if (this.socket) this.socket.emit('message', { id: user, content: msg, channel: this.channel });
+  }
+}
+
+export default Websocket;

src/routes/channel/[channel]/+page.svelte

@@ -9,52 +9,24 @@
   import Send from 'lucide-svelte/icons/send';
   import Message from '$lib/components/message.svelte';
   import { page } from '$app/state';
+  import Websocket from '$lib/clientWebsocket.svelte';
 
-  let { data }: { data: PageData } = $props();
-  let user: string | undefined;
-  let socket: ReturnType<typeof io> | null = null;
-  let log: TypeMessage[] = $state([]);
+  const { data }: { data: PageData } = $props();
+
+  let user: string = uuidv4();
+  let socket: Websocket | undefined = $state();
   let msg: string = $state('');
   const channel = $derived(page.params.channel);
 
-  function logEvent(newMsg: TypeMessage) {
-    log = [
-      {
-        message: newMsg.message,
-        imageSrc: newMsg.imageSrc,
-        user: newMsg.user,
-      },
-      ...log,
-    ];
-  }
-
-  function establishSocketIOConnection() {
-    if (socket) return;
-    socket = io();
-
-    socket.on('message', (data: TypeFullMessage) => {
-      console.log('[ws] message received', data);
-      if (data.channel == channel) {
-        logEvent(data);
-      }
-    });
-  }
-
-  function sendMessage() {
-    if (!socket) return;
-    socket.emit('message', { id: user, content: msg, channel: channel });
-    msg = '';
-  }
-
-  // Clear the log whenever the channel changes
-  $effect(() => {
-    console.info(`Channel changed to ${channel}`);
-    log = [];
+  // Connect on page load
+  onMount(() => {
+    socket = new Websocket(io());
+    socket.connect();
   });
 
-  onMount(() => {
-    establishSocketIOConnection();
-    user = uuidv4();
+  // Update channel on page refresh
+  $effect(() => {
+    if (socket) socket.updateChannel(channel);
   });
 </script>
 
@@ -65,10 +37,15 @@
 {/snippet}
 <div class="flex flex-1 flex-col items-center justify-center rounded-lg shadow-sm gap-1 h-full">
   <div class="flex-grow flex-col-reverse flex flex-auto overflow-y-scroll overflow-x-hidden rounded-lg border w-full">
-    {@render message(log)}
+    {@render message(socket?.messages!)}
     {@render message(data.messages)}
   </div>
-  <form class="flex gap-1 w-full" onsubmit={sendMessage}>
+  <form
+    class="flex gap-1 w-full"
+    onsubmit={() => {
+      socket?.sendMessage(user!, msg);
+      msg = '';
+    }}>
     <Input type="text" placeholder="Type Here" bind:value={msg} />
     <Button class="h-9 w-14"><Send class="size-full" /></Button>
   </form>