Implement music sync room and refine related features

- Add WebSocket-based sync room for real-time music playback sync.
- Expand music exploration search to include albums and artists.
- Adjust track and release data fetching and deletion on server.
- Enhance DASH segmentation job with codec overrides and MPD updates.
- Update music service configuration for websockets and middlewares.
- Make minor UI adjustments to the search component.

packages/app/src/components/Searcher/index.jsx

@@ -184,12 +184,12 @@ const Searcher = (props) => {
 		if (typeof props.model === "function") {
 			result = await props.model(value, {
 				...props.modelParams,
-				limit_per_section: app.isMobile ? 3 : 5,
+				limit: app.isMobile ? 3 : 5,
 			})
 		} else {
 			result = await SearchModel.search(value, {
 				...props.modelParams,
-				limit_per_section: app.isMobile ? 3 : 5,
+				limit: app.isMobile ? 3 : 5,
 			})
 		}
 

packages/app/src/components/Searcher/index.less

@@ -90,7 +90,6 @@ html {
 
 		align-items: center;
 
-		border: 0;
 		padding: 0;
 		margin: 0;
 
@@ -101,6 +100,7 @@ html {
 		padding: 0 10px;
 
 		background-color: var(--background-color-primary);
+		border: 3px solid var(--border-color) !important;
 
 		.ant-input-prefix {
 			font-size: 2rem;
@@ -127,6 +127,9 @@ html {
 	flex-wrap: wrap;
 
 	width: 100%;
+	height: fit-content;
+	max-height: 70vh;
+
 	gap: 10px;
 	padding: 20px;
 
@@ -137,6 +140,7 @@ html {
 
 	color: var(--text-color);
 	background-color: var(--background-color-primary);
+	border: 3px solid var(--border-color);
 
 	.ant-result,
 	.ant-result-title,

packages/app/src/pages/music/list/[id]/index.jsx

@@ -8,11 +8,19 @@ import MusicService from "@models/music"
 import "./index.less"
 
 const ListView = (props) => {
-	const { type, id } = props.params
+	const { id } = props.params
 
-	const [loading, result, error, makeRequest] = app.cores.api.useRequest(
+	const query = new URLSearchParams(window.location.search)
+	const type = query.get("type")
+	const service = query.get("service")
+
+	const [loading, result, error] = app.cores.api.useRequest(
 		MusicService.getReleaseData,
 		id,
+		{
+			type: type,
+			service: service,
+		},
 	)
 
 	if (error) {
@@ -29,6 +37,8 @@ const ListView = (props) => {
 		return <antd.Skeleton active />
 	}
 
+	console.log(result)
+
 	return (
 		<PlaylistView
 			playlist={result}

packages/app/src/pages/music/tabs/explore/components/Navbar/index.jsx

@@ -10,7 +10,11 @@ const MusicNavbar = React.forwardRef((props, ref) => {
 				useUrlQuery
 				renderResults={false}
 				model={async (keywords, params) =>
-					SearchModel.search(keywords, params, ["tracks"])
+					SearchModel.search(keywords, params, [
+						"tracks",
+						"albums",
+						"artists",
+					])
 				}
 				onSearchResult={props.setSearchResults}
 				onEmpty={() => props.setSearchResults(false)}

packages/app/src/pages/music/tabs/explore/components/SearchResults/index.jsx

@@ -8,11 +8,11 @@ import MusicTrack from "@components/Music/Track"
 import Playlist from "@components/Music/Playlist"
 
 const ResultGroupsDecorators = {
-	playlists: {
-		icon: "MdPlaylistPlay",
-		label: "Playlists",
+	albums: {
+		icon: "MdAlbum",
+		label: "Albums",
 		renderItem: (props) => {
-			return <Playlist key={props.key} playlist={props.item} />
+			return <Playlist row playlist={props.item} />
 		},
 	},
 	tracks: {
@@ -23,7 +23,6 @@ const ResultGroupsDecorators = {
 				<MusicTrack
 					key={props.key}
 					track={props.item}
-					//onClickPlayBtn={() => app.cores.player.start(props.item)}
 					onClick={() => app.location.push(`/play/${props.item._id}`)}
 				/>
 			)
@@ -40,6 +39,10 @@ const SearchResults = ({ data }) => {
 
 	// filter out groups with no items array property
 	groupsKeys = groupsKeys.filter((key) => {
+		if (!data[key]) {
+			return false
+		}
+
 		if (!Array.isArray(data[key].items)) {
 			return false
 		}

packages/server/classes/SegmentedAudioMPDJob/index.js

@@ -3,6 +3,10 @@ import path from "node:path"
 
 import { FFMPEGLib, Utils } from "../FFMPEGLib"
 
+const codecOverrides = {
+	wav: "flac",
+}
+
 export default class SegmentedAudioMPDJob extends FFMPEGLib {
 	constructor(params = {}) {
 		super()
@@ -26,11 +30,11 @@ export default class SegmentedAudioMPDJob extends FFMPEGLib {
 			`-c:a ${this.params.audioCodec}`,
 			`-map 0:a`,
 			`-f dash`,
-			`-dash_segment_type mp4`,
 			`-segment_time ${this.params.segmentTime}`,
 			`-use_template 1`,
 			`-use_timeline 1`,
-			`-init_seg_name "init.m4s"`,
+			//`-dash_segment_type mp4`,
+			//`-init_seg_name "init.m4s"`,
 		]
 
 		if (this.params.includeMetadata === false) {
@@ -89,25 +93,69 @@ export default class SegmentedAudioMPDJob extends FFMPEGLib {
 		}
 	}
 
+	_updateMpdBandwidthAndSamplingRate = async ({
+		mpdPath,
+		bandwidth,
+		samplingRate,
+	} = {}) => {
+		try {
+			let mpdContent = await fs.promises.readFile(mpdPath, "utf-8")
+
+			// Regex to find all <Representation ...> tags
+			const representationRegex = /(<Representation\b[^>]*)(>)/g
+
+			mpdContent = mpdContent.replace(
+				representationRegex,
+				(match, startTag, endTag) => {
+					// Remove existing bandwidth and audioSamplingRate attributes if present
+					let newTag = startTag
+						.replace(/\sbandwidth="[^"]*"/, "")
+						.replace(/\saudioSamplingRate="[^"]*"/, "")
+
+					// Add new attributes
+					newTag += ` bandwidth="${bandwidth}" audioSamplingRate="${samplingRate}"`
+
+					return newTag + endTag
+				},
+			)
+
+			await fs.promises.writeFile(mpdPath, mpdContent, "utf-8")
+		} catch (error) {
+			console.error(
+				`[SegmentedAudioMPDJob] Error updating MPD bandwidth/audioSamplingRate for ${mpdPath}:`,
+				error,
+			)
+		}
+	}
+
 	run = async () => {
-		const segmentationCmd = this.buildSegmentationArgs()
 		const outputPath =
 			this.params.outputDir ?? `${path.dirname(this.params.input)}/dash`
 		const outputFile = path.join(outputPath, this.params.outputMasterName)
 
-		this.emit("start", {
-			input: this.params.input,
-			output: outputPath,
-			params: this.params,
-		})
-
-		if (!fs.existsSync(outputPath)) {
-			fs.mkdirSync(outputPath, { recursive: true })
-		}
-
 		try {
+			this.emit("start", {
+				input: this.params.input,
+				output: outputPath,
+				params: this.params,
+			})
+
 			const inputProbe = await Utils.probe(this.params.input)
 
+			if (
+				this.params.audioCodec === "copy" &&
+				codecOverrides[inputProbe.format.format_name]
+			) {
+				this.params.audioCodec =
+					codecOverrides[inputProbe.format.format_name]
+			}
+
+			const segmentationCmd = this.buildSegmentationArgs()
+
+			if (!fs.existsSync(outputPath)) {
+				fs.mkdirSync(outputPath, { recursive: true })
+			}
+
 			const ffmpegResult = await this.ffmpeg({
 				args: segmentationCmd,
 				onProcess: (process) => {
@@ -135,6 +183,29 @@ export default class SegmentedAudioMPDJob extends FFMPEGLib {
 
 			let outputProbe = await Utils.probe(outputFile)
 
+			let bandwidth = null
+			let samplingRate = null
+
+			if (
+				outputProbe &&
+				outputProbe.streams &&
+				outputProbe.streams.length > 0
+			) {
+				bandwidth =
+					outputProbe.format.bit_rate ??
+					outputProbe.streams[0].bit_rate
+
+				samplingRate = outputProbe.streams[0].sample_rate
+			}
+
+			if (bandwidth && samplingRate) {
+				await this._updateMpdBandwidthAndSamplingRate({
+					mpdPath: outputFile,
+					bandwidth: bandwidth,
+					samplingRate: samplingRate,
+				})
+			}
+
 			this.emit("end", {
 				probe: {
 					input: inputProbe,

packages/server/classes/SyncRoomManager/index.js

@@ -0,0 +1,35 @@
+export class SyncRoom {
+	constructor(ownerSocket) {
+		this.ownerSocket = ownerSocket
+	}
+
+	id = global.nanoid()
+
+	buffer = new Set()
+	members = new Set()
+
+	push = async (data) => {
+		if (this.buffer.size > 5) {
+			this.buffer.delete(this.buffer.keys().next().value)
+		}
+
+		this.buffer.add(data)
+
+		for (const socket of this.members) {
+			socket.emit(`syncroom:push`, data)
+		}
+	}
+
+	join = (socket) => {
+		this.members.add(socket)
+
+		// send the latest buffer
+		socket.emit("syncroom.buffer", this.buffer[0])
+	}
+
+	leave = (socket) => {
+		this.members.delete(socket)
+	}
+}
+
+export default class SyncRoomManager {}

packages/server/classes/Transformation/handlers/a-dash.js

@@ -2,7 +2,7 @@ import path from "node:path"
 import SegmentedAudioMPDJob from "@shared-classes/SegmentedAudioMPDJob"
 
 export default async ({ filePath, workPath, onProgress }) => {
-	return new Promise(async (resolve, reject) => {
+	return new Promise((resolve) => {
 		const outputDir = path.resolve(workPath, "a-dash")
 
 		const job = new SegmentedAudioMPDJob({
@@ -10,7 +10,7 @@ export default async ({ filePath, workPath, onProgress }) => {
 			outputDir: outputDir,
 
 			// set to default as raw flac
-			audioCodec: "flac",
+			audioCodec: "copy",
 			audioBitrate: "default",
 			audioSampleRate: "default",
 		})

packages/server/services/music/classes/release/index.js

@@ -130,7 +130,7 @@ export default class Release {
 
 		const items = release.items ?? release.list
 
-		const items_ids = items.map((item) => item._id.toString())
+		const items_ids = items.map((item) => item._id ?? item)
 
 		// delete all releated tracks
 		await Track.deleteMany({

packages/server/services/music/classes/track/methods/get.js

@@ -6,12 +6,12 @@ async function fullfillData(list, { user_id = null }) {
 		list = [list]
 	}
 
-	const trackIds = list.map((track) => {
-		return track._id
-	})
-
 	// if user_id is provided, fetch likes
 	if (user_id) {
+		const trackIds = list.map((track) => {
+			return track._id
+		})
+
 		const tracksLikes = await Library.isFavorite(
 			user_id,
 			trackIds,
@@ -32,21 +32,15 @@ async function fullfillData(list, { user_id = null }) {
 		})
 
 		list = await Promise.all(list)
+	} else {
+		list = list.map((track) => {
+			delete track.source
+			delete track.publisher
+
+			return track
+		})
 	}
 
-	// process some metadata
-	list = list.map(async (track) => {
-		if (track.metadata) {
-			if (track.metadata.bitrate && track.metadata.bitrate > 9000) {
-				track.metadata.lossless = true
-			}
-		}
-
-		return track
-	})
-
-	list = await Promise.all(list)
-
 	return list
 }
 

packages/server/services/music/music.service.js

@@ -7,12 +7,20 @@ import RedisClient from "@shared-classes/RedisClient"
 import SharedMiddlewares from "@shared-middlewares"
 import LimitsClass from "@shared-classes/Limits"
 
+import InjectedAuth from "@shared-lib/injectedAuth"
+
 export default class API extends Server {
 	static refName = "music"
-	static useEngine = "hyper-express-ng"
-	static enableWebsockets = true
-	static routesPath = `${__dirname}/routes`
-	static listen_port = process.env.HTTP_LISTEN_PORT ?? 3003
+	static listenPort = process.env.HTTP_LISTEN_PORT ?? 3003
+
+	static websockets = {
+		enabled: true,
+		path: "/music",
+	}
+
+	static bypassCors = true
+
+	static useMiddlewares = ["logs"]
 
 	middlewares = {
 		...SharedMiddlewares,
@@ -24,9 +32,28 @@ export default class API extends Server {
 		redis: RedisClient(),
 	}
 
+	handleWsUpgrade = async (context, token, res) => {
+		if (!token) {
+			return res.upgrade(context)
+		}
+
+		context = await InjectedAuth(context, token, res).catch(() => {
+			res.close(401, "Failed to verify auth token")
+			return false
+		})
+
+		if (!context || !context.user) {
+			res.close(401, "Unauthorized or missing auth token")
+			return false
+		}
+
+		return res.upgrade(context)
+	}
+
 	async onInitialize() {
 		global.sse = this.contexts.SSEManager
 		global.redis = this.contexts.redis.client
+		global.syncRoomLyrics = new Map()
 
 		await this.contexts.db.initialize()
 		await this.contexts.redis.initialize()

packages/server/services/music/package.json

@@ -1,3 +1,6 @@
 {
-	"name": "music"
+	"name": "music",
+	"dependencies": {
+		"linebridge": "^1.0.0-alpha.4"
+	}
 }

packages/server/services/music/routes/music/my/library/favorite/get.js

@@ -1,7 +1,7 @@
 import Library from "@classes/library"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		const { kind, item_id } = req.query
 

packages/server/services/music/routes/music/my/library/favorite/put.js

@@ -1,7 +1,7 @@
 import Library from "@classes/library"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		const { kind, item_id, to } = req.body
 

packages/server/services/music/routes/music/my/library/get.js

@@ -1,7 +1,7 @@
 import Library from "@classes/library"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		const userId = req.auth.session.user_id
 		const { limit = 50, offset = 0, kind } = req.query

packages/server/services/music/routes/music/my/releases/get.js

@@ -1,7 +1,7 @@
 import { MusicRelease, Track } from "@db_models"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		const { keywords, limit = 10, offset = 0 } = req.query
 

packages/server/services/music/routes/music/recently/get.js

@@ -3,7 +3,7 @@ import { RecentActivity } from "@db_models"
 import TrackClass from "@classes/track"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req, res) => {
 		const user_id = req.auth.session.user_id
 

packages/server/services/music/routes/music/releases/[release_id]/data/get.js

@@ -1,7 +1,7 @@
 import ReleaseClass from "@classes/release"
 
 export default {
-	middlewares: ["withOptionalAuthentication"],
+	useMiddlewares: ["withOptionalAuthentication"],
 	fn: async (req) => {
 		const { release_id } = req.params
 		const { limit = 50, offset = 0 } = req.query

packages/server/services/music/routes/music/releases/[release_id]/delete.js

@@ -1,7 +1,7 @@
 import ReleaseClass from "@classes/release"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		return await ReleaseClass.delete(req.params.release_id, {
 			user_id: req.auth.session.user_id,

packages/server/services/music/routes/music/releases/put.js

@@ -1,18 +1,18 @@
 import ReleaseClass from "@classes/release"
 
 export default {
-    middlewares: ["withAuthentication"],
-    fn: async (req) => {
-        if (req.body._id) {
-            return await ReleaseClass.update(req.body._id, {
-                ...req.body,
-                user_id: req.auth.session.user_id,
-            })
-        } else {
-            return await ReleaseClass.create({
-                ...req.body,
-                user_id: req.auth.session.user_id,
-            })
-        }
-    }
-}
+	useMiddlewares: ["withAuthentication"],
+	fn: async (req) => {
+		if (req.body._id) {
+			return await ReleaseClass.update(req.body._id, {
+				...req.body,
+				user_id: req.auth.session.user_id,
+			})
+		} else {
+			return await ReleaseClass.create({
+				...req.body,
+				user_id: req.auth.session.user_id,
+			})
+		}
+	},
+}

packages/server/services/music/routes/music/tracks/[track_id]/data/get.js

@@ -1,15 +1,15 @@
 import TrackClass from "@classes/track"
 
 export default {
-    middlewares: ["withOptionalAuthentication"],
-    fn: async (req) => {
-        const { track_id } = req.params
-        const user_id = req.auth?.session?.user_id
+	useMiddlewares: ["withOptionalAuthentication"],
+	fn: async (req) => {
+		const { track_id } = req.params
+		const user_id = req.auth?.session?.user_id
 
-        const track = await TrackClass.get(track_id, {
-            user_id
-        })
+		const track = await TrackClass.get(track_id, {
+			user_id,
+		})
 
-        return track
-    }
-}
+		return track
+	},
+}

packages/server/services/music/routes/music/tracks/[track_id]/delete.js

@@ -1,21 +1,21 @@
 import TrackClass from "@classes/track"
 
 export default {
-    middlewares: ["withAuthentication"],
-    fn: async (req) => {
-        const { track_id } = req.params
+	useMiddlewares: ["withAuthentication"],
+	fn: async (req) => {
+		const { track_id } = req.params
 
-        const track = await TrackClass.get(track_id)
+		const track = await TrackClass.get(track_id)
 
-        if (track.publisher.user_id !== req.auth.session.user_id) {
-            throw new Error("Forbidden, you don't own this track")
-        }
+		if (track.publisher.user_id !== req.auth.session.user_id) {
+			throw new Error("Forbidden, you don't own this track")
+		}
 
-        await TrackClass.delete(track_id)
+		await TrackClass.delete(track_id)
 
-        return {
-            success: true,
-            track: track,
-        }
-    }
-}
+		return {
+			success: true,
+			track: track,
+		}
+	},
+}

packages/server/services/music/routes/music/tracks/[track_id]/lyrics/put.js

@@ -1,66 +1,66 @@
 import { TrackLyric, Track } from "@db_models"
 
 export default {
-    middlewares: ["withAuthentication"],
-    fn: async (req) => {
-        const { track_id } = req.params
-        const { video_source, lrc, sync_audio_at } = req.body
+	useMiddlewares: ["withAuthentication"],
+	fn: async (req) => {
+		const { track_id } = req.params
+		const { video_source, lrc, sync_audio_at } = req.body
 
-        // check if track exists
-        let track = await Track.findById(track_id).catch(() => null)
+		// check if track exists
+		let track = await Track.findById(track_id).catch(() => null)
 
-        if (!track) {
-            throw new OperationError(404, "Track not found")
-        }
+		if (!track) {
+			throw new OperationError(404, "Track not found")
+		}
 
-        if (track.publisher.user_id !== req.auth.session.user_id) {
-            throw new OperationError(403, "Unauthorized")
-        }
+		if (track.publisher.user_id !== req.auth.session.user_id) {
+			throw new OperationError(403, "Unauthorized")
+		}
 
-        console.log(`Setting lyrics for track ${track_id} >`, {
-            track_id: track_id,
-            video_source: video_source,
-            lrc: lrc,
-        })
+		console.log(`Setting lyrics for track ${track_id} >`, {
+			track_id: track_id,
+			video_source: video_source,
+			lrc: lrc,
+		})
 
-        // check if trackLyric exists
-        let trackLyric = await TrackLyric.findOne({
-            track_id: track_id
-        })
+		// check if trackLyric exists
+		let trackLyric = await TrackLyric.findOne({
+			track_id: track_id,
+		})
 
-        // if trackLyric exists, update it, else create it
-        if (!trackLyric) {
-            trackLyric = new TrackLyric({
-                track_id: track_id,
-                video_source: video_source,
-                lrc: lrc,
-                sync_audio_at: sync_audio_at,
-            })
+		// if trackLyric exists, update it, else create it
+		if (!trackLyric) {
+			trackLyric = new TrackLyric({
+				track_id: track_id,
+				video_source: video_source,
+				lrc: lrc,
+				sync_audio_at: sync_audio_at,
+			})
 
-            await trackLyric.save()
-        } else {
-            const update = Object()
+			await trackLyric.save()
+		} else {
+			const update = Object()
 
-            if (typeof video_source !== "undefined") {
-                update.video_source = video_source
-            }
+			if (typeof video_source !== "undefined") {
+				update.video_source = video_source
+			}
 
-            if (typeof lrc !== "undefined") {
-                update.lrc = lrc
-            }
+			if (typeof lrc !== "undefined") {
+				update.lrc = lrc
+			}
 
-            if (typeof sync_audio_at !== "undefined") {
-                update.sync_audio_at = sync_audio_at
-            }
+			if (typeof sync_audio_at !== "undefined") {
+				update.sync_audio_at = sync_audio_at
+			}
 
-            trackLyric = await TrackLyric.findOneAndUpdate(
-                {
-                    track_id: track_id,
-                },
-                update,
-            )
-        }
+			trackLyric = await TrackLyric.findOneAndUpdate(
+				{
+					track_id: track_id,
+				},
+				update,
+			)
+		}
 
-        return trackLyric
-    }
-}
+		return trackLyric
+	},
+}

packages/server/services/music/routes/music/tracks/[track_id]/override/put.js

@@ -1,36 +1,36 @@
 import { TrackOverride } from "@db_models"
 
 export default {
-    middlewares: ["withAuthentication", "onlyAdmin"],
-    fn: async (req) => {
-        const { track_id } = req.params
-        const { service, override } = req.body
+	useMiddlewares: ["withAuthentication", "onlyAdmin"],
+	fn: async (req) => {
+		const { track_id } = req.params
+		const { service, override } = req.body
 
-        let trackOverride = await TrackOverride.findOne({
-            track_id: track_id,
-            service: service,
-        }).catch(() => null)
+		let trackOverride = await TrackOverride.findOne({
+			track_id: track_id,
+			service: service,
+		}).catch(() => null)
 
-        if (!trackOverride) {
-            trackOverride = new TrackOverride({
-                track_id: track_id,
-                service: service,
-                override: override,
-            })
+		if (!trackOverride) {
+			trackOverride = new TrackOverride({
+				track_id: track_id,
+				service: service,
+				override: override,
+			})
 
-            await trackOverride.save()
-        } else {
-            trackOverride = await TrackOverride.findOneAndUpdate(
-                {
-                    track_id: track_id,
-                    service: service,
-                },
-                {
-                    override: override,
-                },
-            )
-        }
+			await trackOverride.save()
+		} else {
+			trackOverride = await TrackOverride.findOneAndUpdate(
+				{
+					track_id: track_id,
+					service: service,
+				},
+				{
+					override: override,
+				},
+			)
+		}
 
-        return trackOverride.override
-    }
-}
+		return trackOverride.override
+	},
+}

packages/server/services/music/routes/music/tracks/get.js

@@ -19,6 +19,7 @@ export default async (req) => {
 
 	const items = await Track.find(query)
 		.limit(limit)
+		.select("-source -publisher -public")
 		.skip(trim)
 		.sort({ _id: -1 })
 

packages/server/services/music/routes/music/tracks/put.js

@@ -2,7 +2,7 @@ import requiredFields from "@shared-utils/requiredFields"
 import TrackClass from "@classes/track"
 
 export default {
-	middlewares: ["withAuthentication"],
+	useMiddlewares: ["withAuthentication"],
 	fn: async (req) => {
 		if (Array.isArray(req.body.items)) {
 			let results = []

packages/server/services/music/ws_routes/sync_room/join.js

@@ -0,0 +1,13 @@
+import leave from "./leave"
+
+export default async (client, user_id) => {
+	console.log(`[SYNC-ROOM] Join ${client.userId} -> ${user_id}`)
+
+	if (client.syncroom) {
+		await leave(client, client.syncroom)
+	}
+
+	// subscribe to stream topic
+	await client.subscribe(`syncroom/${user_id}`)
+	client.syncroom = user_id
+}

packages/server/services/music/ws_routes/sync_room/leave.js

@@ -0,0 +1,8 @@
+export default async (client, user_id) => {
+	console.log(`[SYNC-ROOM] Leave ${client.userId} -> ${user_id}`)
+
+	// unsubscribe from sync topic
+	await client.unsubscribe(`syncroom/${user_id}`)
+
+	client.syncroom = null
+}

packages/server/services/music/ws_routes/sync_room/push.js

@@ -0,0 +1,7 @@
+export default async (client, payload) => {
+	console.log(`[SYNC-ROOM] Pushing to sync ${client.userId}`, payload)
+
+	const roomId = `syncroom/${client.userId}`
+
+	global.websockets.senders.toTopic(roomId, "sync:receive", payload)
+}

packages/server/services/music/ws_routes/sync_room/push_lyrics.js

@@ -0,0 +1,14 @@
+export default async (client, payload) => {
+	console.log(`[SYNC-ROOM] Pushing lyrics to sync ${client.userId}`)
+
+	const roomId = `syncroom/${client.userId}`
+
+	if (!payload) {
+		// delete lyrics
+		global.syncRoomLyrics.delete(client.userId)
+	} else {
+		global.syncRoomLyrics.set(client.userId, payload)
+	}
+
+	global.websockets.senders.toTopic(roomId, "sync:lyrics:receive", payload)
+}

packages/server/services/music/ws_routes/sync_room/request_lyrics.js

@@ -0,0 +1,5 @@
+export default async (client) => {
+	console.log(`[SYNC-ROOM] Requesting lyrics of room ${client.syncroom}`)
+
+	return global.syncRoomLyrics.get(client.syncroom)
+}