feat: websockets & realtime updates

frontend/package-lock.json

@@ -1210,18 +1210,6 @@
 			"dev": true,
 			"license": "MIT"
 		},
-		"node_modules/@types/node": {
-			"version": "24.1.0",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-24.1.0.tgz",
-			"integrity": "sha512-ut5FthK5moxFKH2T1CUOC6ctR67rQRvvHdFLCD2Ql6KXmMuCrjsSsRI9UsLCm9M18BMwClv4pn327UvB7eeO1w==",
-			"dev": true,
-			"license": "MIT",
-			"optional": true,
-			"peer": true,
-			"dependencies": {
-				"undici-types": "~7.8.0"
-			}
-		},
 		"node_modules/acorn": {
 			"version": "8.15.0",
 			"resolved": "https://registry.npmjs.org/acorn/-/acorn-8.15.0.tgz",
@@ -2315,15 +2303,6 @@
 				"node": ">=14.17"
 			}
 		},
-		"node_modules/undici-types": {
-			"version": "7.8.0",
-			"resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.8.0.tgz",
-			"integrity": "sha512-9UJ2xGDvQ43tYyVMpuHlsgApydB8ZKfVYTsLDhXkFL/6gfkp+U8xTGdh8pMJv1SpZna0zxG1DwsKZsreLbXBxw==",
-			"dev": true,
-			"license": "MIT",
-			"optional": true,
-			"peer": true
-		},
 		"node_modules/vite": {
 			"version": "7.0.6",
 			"resolved": "https://registry.npmjs.org/vite/-/vite-7.0.6.tgz",

frontend/src/lib/utils.ts

@@ -60,10 +60,8 @@ export const triggerPlayNext = async function (roomId: string): Promise<[FetchEr
 
     let songs: Song[] = []
 
-    if (json["ended"]) {
     json["queue"].forEach(async (i: any) => {
         songs.push(await parseSong(i))
     })
-    }
     return [null, songs, json["index"]]
 }

frontend/src/routes/admin/[id]/+page.svelte

@@ -4,6 +4,7 @@
     import { onMount } from "svelte"
     import type { FetchError } from "$lib/types"
     import { getQueueSongs, triggerPlayNext } from "$lib/utils.js"
+    import Error from "$lib/components/Error.svelte"
 
     let { data } = $props()
 
@@ -20,24 +21,22 @@
         playingIndex = index
     })
 
-    $effect(() => {
-        $inspect(queueSongs)
-    })
-
     async function playNext() {
         let songs, index
         ;[returnError, songs, index] = await triggerPlayNext(data.roomId)
 
         if (returnError) return
 
-        if (songs.length != 0) queueSongs = songs
+        queueSongs = songs
         playingIndex = index
     }
 </script>
 
-{returnError}
-
+{#if returnError}
+    <Error {returnError} />
+{:else}
     <div class="flex w-full flex-col items-center justify-center p-4 lg:p-10">
         <QueueSlider {queueSongs} {playingIndex} />
         <button onclick={playNext}>Next</button>
     </div>
+{/if}

frontend/src/routes/room/[id]/+page.svelte

@@ -2,12 +2,12 @@
     import QueueSlider from "$lib/components/QueueSlider.svelte"
     import SuggestionInput from "$lib/components/SuggestionInput.svelte"
     import Error from "$lib/components/Error.svelte"
-    import { type Suggestion, type Song } from "$lib/types.js"
-    import { onMount } from "svelte"
+    import { type Suggestion, type Song, parseSong, parseSuggestion } from "$lib/types.js"
+    import { onDestroy, onMount } from "svelte"
     import SuggestionList from "$lib/components/SuggestionList.svelte"
     import { getQueueSongs, getSuggestions, joinRoom } from "$lib/utils.js"
     import type { FetchError } from "$lib/types.js"
-    import { io } from "socket.io-client"
+    import { io, Socket } from "socket.io-client"
 
     let { data } = $props()
 
@@ -18,23 +18,20 @@
 
     let returnError = $state<FetchError | null>()
 
-    let wsUrl = ""
+    let socket: Socket
 
     onMount(async () => {
         // Join the room
+        socket = io("/", { path: "/ws" })
 
         let sugg, queue, index
-        ;[returnError, wsUrl] = await joinRoom(data.roomId)
+        ;[returnError] = await joinRoom(data.roomId)
         if (returnError) {
             return
         }
 
         ;[returnError, sugg] = await getSuggestions(data.roomId)
         if (returnError) return
-
-        // Setup websocket connection
-        let socket = io("/", { path: "/ws" })
-        await socket.emitWithAck("join_room", { id: data.roomId })
         ;[returnError, queue, index] = await getQueueSongs(data.roomId)
         if (returnError) {
             return
@@ -43,6 +40,28 @@
         queueSongs = queue
         suggestions = sugg
         playingIndex = index
+
+        // Setup websocket connection
+        await socket.emitWithAck("join_room", { id: data.roomId })
+
+        socket.on("queue_update", async (d) => {
+            const songs = await Promise.all(d.queue.map(parseSong))
+            queueSongs = songs
+            playingIndex = d.index
+        })
+
+        socket.on("new_vote", async (d) => {
+            const updated = await parseSuggestion(d.song)
+            suggestions = suggestions.map((s) => (s.uuid === updated.uuid ? updated : s))
+        })
+
+        socket.on("new_song", async (d) => {
+            const song = await parseSuggestion(d.song)
+            suggestions = [...suggestions, song]
+        })
+    })
+    onDestroy(() => {
+        if (socket) socket.disconnect()
     })
 </script>