feat: add basic queue management, add volume slider

src/components/navbar.svelte

@@ -1,15 +1,26 @@
-<script>
+<script lang="ts">
 	import Link from './a.svelte';
-	import IconMusic from '~icons/mdi/music';
+	import IconTrack from '~icons/mdi/music-box';
 	import IconSettings from '~icons/mdi/settings';
 	import IconArtist from '~icons/mdi/artist';
 	import IconAlbum from '~icons/mdi/album';
 	import IconPlaylist from '~icons/mdi/playlist-music';
+	import IconQueue from '~icons/mdi/format-list-bulleted';
+
+	let links: { id: string; href?: string; icon: any }[] = [
+		{ id: 'queue', icon: IconQueue },
+		{ id: 'tracks', href: '/', icon: IconTrack },
+		{ id: 'albums', icon: IconAlbum },
+		{ id: 'artists', icon: IconArtist },
+		{ id: 'playlists', icon: IconPlaylist },
+		{ id: 'settings', icon: IconSettings }
+	];
 </script>
 
 <nav class="flex">
-	<Link title="tracks" href="/"><IconMusic class="w-7 h-7" /></Link>
+	{#each links as link}
-	<Link title="albums" href="/albums"><IconAlbum class="w-7 h-7" /></Link>
+		<Link title={link.id} href={link.href ?? `/${link.id}`}>
-	<Link title="artists" href="/artists"><IconArtist class="w-7 h-7" /></Link>
+			<svelte:component this={link.icon} class="w-7 h-7" />
-	<Link title="settings" href="/settings"><IconSettings class="w-7 h-7" /></Link>
+		</Link>
+	{/each}
 </nav>

src/components/playingnow.svelte

@@ -1,16 +1,29 @@
 <script lang="ts">
-	import { address, makeAudioUrl, makeThumbnailUrl, playingNow, token } from '../stores';
+	import {
+		makeAudioUrl,
+		makeThumbnailUrl,
+		currentTrack,
+		queuePosition,
+		queue,
+		volume
+	} from '../stores';
 	import IconPlay from '~icons/mdi/play';
 	import IconPause from '~icons/mdi/pause';
+	import IconMusic from '~icons/mdi/music';
 	import { RangeSlider } from '@skeletonlabs/skeleton';
+	import type { ResourceId } from '../types';
 
-	$: thumbUrl = $playingNow
+	$: track = $currentTrack?.track;
-		? makeThumbnailUrl($address, $token, $playingNow.track.thumbnail_id)
+	$: track_id = $currentTrack?.id;
-		: null;
+	$: thumbUrl = track ? makeThumbnailUrl(track.thumbnail_id) : null;
-	$: audioUrl = $playingNow ? makeAudioUrl($address, $token, $playingNow.id) : null;
+	$: audioUrl = track_id ? makeAudioUrl(track_id) : null;
 
-	function getAudioElement() {
+	function getAudioElement(id: ResourceId | null) {
-		return document.getElementById('audio-source')! as HTMLAudioElement;
+		const elem = document.getElementById(`audio-source-${id}`);
+		if (elem === null) {
+			return null;
+		}
+		return elem as HTMLAudioElement;
 	}
 
 	function calculateMinuteSecond(seconds: number) {
@@ -32,45 +45,58 @@
 	let showIcon = false;
 </script>
 
-{#if $playingNow !== null}
+<div class="flex gap-2 z-10">
-	<div class="flex gap-2 z-10">
+	{#if audioUrl !== null}
 		<audio
-			id="audio-source"
+			id="audio-source-{track_id}"
 			src={audioUrl}
+			autoplay
 			bind:paused={isPaused}
 			bind:currentTime
 			bind:duration
-			autoplay
+			bind:volume={$volume}
+			on:ended={(_) => {
+				const pos = $queuePosition;
+				if (pos !== null) {
+					const _newPos = pos + 1;
+					const newPos = _newPos < $queue.length ? _newPos : null;
+					duration = 0;
+					currentTime = 0;
+					queuePosition.set(newPos);
+				}
+			}}
 		/>
+	{/if}
 	<button
 		class="relative placeholder w-12 h-12"
 		on:pointerenter={(_) => (showIcon = true)}
 		on:pointerleave={(_) => (showIcon = false)}
 		on:click={(_) => {
-				let elem = getAudioElement();
+			let elem = getAudioElement(track_id ?? null);
-				if (isPaused) {
+			if (elem) {
-					elem.play();
+				elem.paused ? elem.play() : elem.pause();
-				} else {
-					elem.pause();
 			}
 		}}
 	>
+		<IconMusic class="absolute top-1 left-1 w-10 h-10" />
 		<!-- svelte-ignore a11y-missing-attribute -->
+		{#if thumbUrl !== null}
 			<img
 				src={thumbUrl}
 				class="child {isError ? 'hidden' : ''}"
 				on:error={() => (isError = true)}
 				on:load={() => (isError = false)}
 			/>
-			<IconPlay class="child play-icon {showIcon && isPaused ? 'visible' : 'hidden'}" />
+		{/if}
-			<IconPause class="child play-icon {showIcon && !isPaused ? 'visible' : 'hidden'}" />
+		<IconPlay class="child play-icon {showIcon && isPaused ? 'opacity-100' : 'opacity-0'}" />
+		<IconPause class="child play-icon {showIcon && !isPaused ? 'opacity-100' : 'opacity-0'}" />
 	</button>
 	<div class="flex flex-col gap-1">
 		<div
-				title={$playingNow.track.title}
+			title={track?.title ?? 'Not playing'}
 			class="w-80 max-md:w-44 max-sm:w-32 whitespace-nowrap overflow-ellipsis overflow-hidden"
 		>
-				{$playingNow.track.title}
+			{track?.title ?? 'Not playing'}
 		</div>
 		<div class="flex items-center gap-1">
 			<RangeSlider
@@ -83,17 +109,16 @@
 			<div class="text-xs opacity-70 w-8">{calculateMinuteSecond(currentTime)}</div>
 		</div>
 	</div>
-	</div>
+</div>
-{/if}
 
 <style lang="postcss">
-	:global(.play-icon) {
+	button :global(.play-icon) {
-		@apply variant-glass-surface backdrop-blur-sm;
+		@apply transition-opacity variant-glass-surface backdrop-blur-sm;
 	}
-	:global(.child) {
+	button :global(.child) {
 		@apply absolute top-0 left-0 w-12 h-12;
 	}
-	:global(.range-content) {
+	div :global(.range-content) {
 		@apply p-0;
 	}
 </style>

src/components/track.svelte

@@ -1,30 +1,46 @@
 <script lang="ts">
 	import type { TrackWithId } from '../types';
-	import { playingNow, makeThumbnailUrl, address, token } from '../stores';
+	import { queue, queuePosition, makeThumbnailUrl, currentTrack } from '../stores';
 	import Spinnny from '~icons/line-md/loading-loop';
 	import IconPlay from '~icons/mdi/play';
+	import IconMusic from '~icons/mdi/music';
 
 	export let track_with_id: TrackWithId;
 	let track = track_with_id.track;
+	let track_id = track_with_id.id;
 
-	$: url = makeThumbnailUrl($address, $token, track.thumbnail_id);
+	$: thumbUrl = makeThumbnailUrl(track.thumbnail_id);
 	let showSpinner = false;
 	let isError = false;
 	let showPlayIcon = false;
 </script>
 
-<div class="card flex gap-2 m-2 p-1 w-fit max-w-full">
+<div class="flex gap-2 w-fit max-w-full">
 	<button
 		class="relative placeholder rounded min-w-[3rem] min-h-[3rem]"
-		on:click={(_) => playingNow.set(track_with_id)}
+		on:click={(_) => {
+			const position = $queue.indexOf(track_id);
+			if (position !== -1) {
+				queuePosition.set(position);
+			} else {
+				queue.update((q) => {
+					q.push(track_id);
+					return q;
+				});
+				queuePosition.set($queue.length - 1);
+			}
+		}}
 		on:pointerenter={(_) => (showPlayIcon = true)}
 		on:pointerleave={(_) => (showPlayIcon = false)}
 	>
-		<Spinnny class="top-1 left-1 w-10 h-10 {showSpinner ? 'visible' : 'hidden'}" />
+		<IconMusic class="absolute top-1 left-1 w-10 h-10" />
+		<Spinnny
+			class="absolute play-icon top-1 left-1 w-10 h-10 {showSpinner ? 'visible' : 'hidden'}"
+		/>
 		<!-- svelte-ignore a11y-missing-attribute -->
 		<img
-			src={url}
+			src={thumbUrl}
-			class="top-0 left-0 w-12 h-12 rounded {showSpinner || isError ? 'hidden' : ''}"
+			class="child {showSpinner || isError ? 'hidden' : ''}"
 			on:error={() => {
 				isError = true;
 				showSpinner = false;
@@ -32,17 +48,27 @@
 			on:loadstart={() => (showSpinner = true)}
 			on:load={() => (showSpinner = false)}
 		/>
-		<IconPlay
+		<IconPlay class="child play-icon {showPlayIcon ? 'opacity-100' : 'opacity-0'}" />
-			class="absolute top-0 left-0 w-12 h-12 rounded variant-glass-surface backdrop-blur-sm {showPlayIcon
-				? 'visible'
-				: 'hidden'}"
-		/>
 	</button>
 	<div class="whitespace-nowrap overflow-ellipsis overflow-hidden">
-		#{track.track_num} - {track.title}
+		<span>#{track.track_num} - {track.title}</span>
+		<span
+			class="badge variant-filled-primary py-0.5 {$currentTrack?.id == track_id
+				? 'visible'
+				: 'hidden'}">playing</span
+		>
 		<div class="text-sm whitespace-nowrap overflow-ellipsis overflow-hidden">
 			<span class="opacity-70">{track.album_title ? `from ${track.album_title}` : ''}</span>
 			<span class="opacity-40">{track.artist_name ? `by ${track.artist_name}` : ''}</span>
 		</div>
 	</div>
 </div>
+
+<style lang="postcss">
+	button :global(.play-icon) {
+		@apply transition-opacity variant-glass-surface backdrop-blur-sm;
+	}
+	button :global(.child) {
+		@apply rounded absolute top-0 left-0 w-12 h-12;
+	}
+</style>

src/components/volumeSlider.svelte

@@ -0,0 +1,25 @@
+<script lang="ts">
+	import IconVolumeHigh from '~icons/mdi/volume-high';
+	import IconVolumeMedium from '~icons/mdi/volume-medium';
+	import IconVolumeLow from '~icons/mdi/volume-low';
+	import { RangeSlider } from '@skeletonlabs/skeleton';
+	import type { ResourceId } from '../types';
+	import { currentTrack, volume } from '../stores';
+
+	function getAudioElement(id: ResourceId | null) {
+		const elem = document.getElementById(`audio-source-${id}`);
+		if (elem === null) {
+			return null;
+		}
+		return elem as HTMLAudioElement;
+	}
+
+	$: audioElem = getAudioElement($currentTrack?.id ?? null);
+</script>
+
+<div class="flex items-center">
+	<div class="w-24">
+		<RangeSlider name="volume-slider" bind:value={$volume} step={0.01} max={1.0} />
+	</div>
+	<IconVolumeHigh class="w-7 h-7" />
+</div>

src/routes/+layout.svelte

@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
 	// Your selected Skeleton theme:
 	import '@skeletonlabs/skeleton/themes/theme-vintage.css';
 	// This contains the bulk of Skeletons required styles:
@@ -6,13 +6,17 @@
 	import '../app.css';
 
 	import { AppShell, Toast, toastStore } from '@skeletonlabs/skeleton';
-	import { address, playingNow, token, tracks, tracksSorted } from '../stores';
+	import { address, currentTrack, queuePosition, token, tracks, tracksSorted } from '../stores';
 	import { _metadataComm as comm } from './+layout';
 	import Navbar from '../components/navbar.svelte';
 	import PlayingNow from '../components/playingnow.svelte';
+	import VolumeSlider from '../components/volumeSlider.svelte';
+
+	$: title = $currentTrack !== null ? `${$currentTrack.track.title} - musikspider` : `musikspider`;
 
 	comm.setCallbacks({
 		onConnect: () => {
+			toastStore.clear();
 			toastStore.trigger({
 				message: 'Successfully connected to the server',
 				background: 'variant-filled-success'
@@ -25,7 +29,7 @@
 				background: 'variant-filled-error',
 				autohide: false
 			});
-			playingNow.set(null);
+			queuePosition.set(null);
 		},
 		onIncompatible: (reason) => {
 			toastStore.trigger({
@@ -54,8 +58,6 @@
 			remaining -= 500;
 		}
 	});
-
-	$: title = $playingNow !== null ? `${$playingNow.track.title} - musikspider` : `musikspider`;
 </script>
 
 <svelte:head>
@@ -64,12 +66,12 @@
 
 <AppShell>
 	<svelte:fragment slot="footer">
-		<div class="w-screen">
+		<div class="flex w-screen place-content-end max-sm:place-content-center">
-			<div class="card fixed mr-4 bottom-14 right-0"><Navbar /></div>
+			<div class="card fixed bottom-14 sm:mr-4"><Navbar /></div>
-			<div class="card rounded-none fixed w-full bottom-0 flex items-center h-12">
-				<PlayingNow />
-				<div class="ml-auto">volume</div>
 		</div>
+		<div class="card rounded-none w-screen flex flex-grow items-center h-12">
+			<PlayingNow />
+			<div class="ml-auto"><VolumeSlider /></div>
 		</div>
 	</svelte:fragment>
 	<slot />

src/routes/+page.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
 	import VirtualList from 'svelte-tiny-virtual-list';
-	import { tracks, tracksSorted } from '../stores';
+	import { queue, tracks, tracksSorted } from '../stores';
 	import TrackComponent from '../components/track.svelte';
 	import type { Track, TrackWithId } from '../types';
 
@@ -20,10 +20,12 @@
 		height={listHeight}
 		itemSize={trackItemSize}
 		itemCount={trackCount}
-		overscanCount={1}
+		overscanCount={3}
+		getKey={(index) => $tracksSorted.get(index)}
 	>
 		<div slot="item" let:index let:style {style}>
-			<div class="max-sm:pr-4"><TrackComponent track_with_id={getTrack(index)} /></div>
+			<div class="pt-2 pl-2 max-sm:pr-4"><TrackComponent track_with_id={getTrack(index)} /></div>
+			<hr class="w-full mt-1.5" />
 		</div>
 	</VirtualList>
 </div>

src/routes/queue/+page.svelte

@@ -0,0 +1,52 @@
+<script lang="ts">
+	import VirtualList from 'svelte-tiny-virtual-list';
+	import { currentTrack, queue, queuePosition, tracks } from '../../stores';
+	import TrackComponent from '../../components/track.svelte';
+	import type { TrackWithId } from '../../types';
+	import IconRemove from '~icons/mdi/minus-thick';
+	import { get } from 'svelte/store';
+
+	$: trackCount = $queue.length;
+	let trackItemSize = 62;
+	let listHeight = 0;
+
+	$: getTrack = (index: number): TrackWithId => {
+		let id = $queue.at(index)!;
+		let track = $tracks.get(id)!;
+		return { id, track };
+	};
+</script>
+
+<div class="h-full" bind:offsetHeight={listHeight}>
+	<VirtualList
+		height={listHeight}
+		itemSize={trackItemSize}
+		itemCount={trackCount}
+		overscanCount={3}
+		getKey={(index) => $queue.at(index)}
+	>
+		<div slot="item" let:index let:style {style}>
+			<div class="flex pt-2 pl-2 max-sm:pr-4">
+				<TrackComponent track_with_id={getTrack(index)} />
+				<button
+					title="remove track"
+					class="mr-2 ml-auto btn px-3 hover:variant-soft-primary"
+					on:click={(_) => {
+						queue.update((q) => {
+							q.splice(index, 1);
+							return q;
+						});
+						const curTrack = $currentTrack;
+						if (curTrack !== null) {
+							const newPos = $queue.indexOf(curTrack.id);
+							queuePosition.set(newPos === -1 ? null : newPos);
+						}
+					}}
+				>
+					<IconRemove class="w-7 h-7" />
+				</button>
+			</div>
+			<hr class="w-full mt-1.5" />
+		</div>
+	</VirtualList>
+</div>

src/stores.ts

@@ -1,4 +1,4 @@
-import { writable } from 'svelte/store';
+import { get, readable, writable, type Writable } from 'svelte/store';
 import type { ResourceId, Track, TrackWithId } from './types';
 
 function writableStorage(key: string, defaultValue: string) {
@@ -7,18 +7,43 @@ function writableStorage(key: string, defaultValue: string) {
   return store;
 }
 
-export function makeThumbnailUrl(address: string, token: string, id: ResourceId) {
-  return `http://${address}/thumbnail/${id}?token=${token}`;
-}
-
-export function makeAudioUrl(address: string, token: string, id: ResourceId) {
-  return `http://${address}/audio/id/${id}?token=${token}`;
-}
-
 export const address = writableStorage("address", "127.0.0.1:5505");
 export const token = writableStorage("token", "");
 
+export function makeThumbnailUrl(id: ResourceId) {
+  return `http://${get(address)}/thumbnail/${id}?token=${get(token)}`;
+}
+
+export function makeAudioUrl(id: ResourceId) {
+  return `http://${get(address)}/audio/id/${id}?token=${get(token)}`;
+}
+
+export const currentTrack = writable<TrackWithId | null>(null);
+
+export function getCurrentTrack(tracks: Map<ResourceId, Track>, queue: ResourceId[], position: number | null): TrackWithId | null {
+  if (position === null) {
+    return null;
+  }
+  const id = queue.at(position);
+  if (id === undefined) {
+    return null;
+  }
+  const track = tracks.get(id);
+  if (track === undefined) {
+    return null;
+  }
+  return {
+    track,
+    id,
+  };
+}
+
+export const queuePosition = writable<number | null>(null);
+export const queue = writable<ResourceId[]>([]);
 export const tracks = writable<Map<ResourceId, Track>>(new Map());
 export const tracksSorted = writable<Map<number, ResourceId>>(new Map());
 
-export const playingNow = writable<TrackWithId | null>(null);
+queuePosition.subscribe((pos) => currentTrack.set(getCurrentTrack(get(tracks), get(queue), pos)));
+tracks.subscribe((newTracks) => currentTrack.set(getCurrentTrack(newTracks, get(queue), get(queuePosition))));
+
+export const volume = writable<number>(1.0);