From 199abb294f98cd7d369650bb9455f69a603ef532 Mon Sep 17 00:00:00 2001
From: Justin Edmund <justin@jedmund.com>
Date: Fri, 13 Jun 2025 21:50:13 -0400
Subject: [PATCH] Now playing

---
 src/lib/components/Album.svelte      |   4 +
 src/lib/components/NowPlaying.svelte | 105 +++++++++++++++++++++++++
 src/lib/server/apple-music-client.ts |   7 +-
 src/lib/types/lastfm.ts              |   3 +
 src/routes/api/lastfm/+server.ts     | 112 +++++++++++++++++++++++++--
 5 files changed, 220 insertions(+), 11 deletions(-)
 create mode 100644 src/lib/components/NowPlaying.svelte

diff --git a/src/lib/components/Album.svelte b/src/lib/components/Album.svelte
index 204d726..b4e1b4c 100644
--- a/src/lib/components/Album.svelte
+++ b/src/lib/components/Album.svelte
@@ -2,6 +2,7 @@
 	import { spring } from 'svelte/motion'
 	import type { Album } from '$lib/types/lastfm'
 	import { audioPreview } from '$lib/stores/audio-preview'
+	import NowPlaying from './NowPlaying.svelte'
 
 	interface AlbumProps {
 		album?: Album
@@ -109,6 +110,9 @@
 						style="transform: scale({$scale})"
 						loading="lazy"
 					/>
+					{#if album.isNowPlaying}
+						<NowPlaying trackName={album.nowPlayingTrack !== album.name ? album.nowPlayingTrack : undefined} />
+					{/if}
 					{#if hasPreview && isHovering}
 						<button
 							class="preview-button"
diff --git a/src/lib/components/NowPlaying.svelte b/src/lib/components/NowPlaying.svelte
new file mode 100644
index 0000000..09da267
--- /dev/null
+++ b/src/lib/components/NowPlaying.svelte
@@ -0,0 +1,105 @@
+<script lang="ts">
+	interface Props {
+		trackName?: string
+	}
+
+	let { trackName }: Props = $props()
+</script>
+
+<div class="now-playing">
+	<div class="equalizer" aria-label="Now playing">
+		<span class="bar"></span>
+		<span class="bar"></span>
+		<span class="bar"></span>
+	</div>
+	{#if trackName}
+		<span class="track-name">{trackName}</span>
+	{/if}
+</div>
+
+<style lang="scss">
+	.now-playing {
+		position: absolute;
+		top: $unit;
+		left: $unit;
+		display: flex;
+		align-items: center;
+		gap: $unit-half;
+		padding: $unit-half $unit;
+		background: rgba(0, 0, 0, 0.9);
+		color: white;
+		border-radius: $unit * 2;
+		font-size: $font-size-small;
+		backdrop-filter: blur(10px);
+		z-index: 10;
+		animation: fadeIn 0.3s ease-out;
+	}
+
+	@keyframes fadeIn {
+		from {
+			opacity: 0;
+			transform: translateY(-4px);
+		}
+		to {
+			opacity: 1;
+			transform: translateY(0);
+		}
+	}
+
+	.equalizer {
+		display: flex;
+		align-items: flex-end;
+		gap: 2px;
+		height: 16px;
+	}
+
+	.bar {
+		width: 3px;
+		background: $accent-color;
+		animation: dance 0.6s ease-in-out infinite;
+		transform-origin: bottom;
+	}
+
+	.bar:nth-child(1) {
+		height: 40%;
+		animation-delay: 0s;
+	}
+
+	.bar:nth-child(2) {
+		height: 60%;
+		animation-delay: 0.2s;
+	}
+
+	.bar:nth-child(3) {
+		height: 50%;
+		animation-delay: 0.4s;
+	}
+
+	@keyframes dance {
+		0%, 100% {
+			transform: scaleY(1);
+		}
+		50% {
+			transform: scaleY(1.8);
+		}
+	}
+
+	.track-name {
+		max-width: 150px;
+		overflow: hidden;
+		text-overflow: ellipsis;
+		white-space: nowrap;
+		font-weight: $font-weight-med;
+	}
+
+	@include breakpoint('phone') {
+		.now-playing {
+			font-size: $font-size-extra-small;
+			padding: $unit-fourth $unit-half;
+		}
+
+		.track-name {
+			display: none;
+		}
+	}
+</style>
\ No newline at end of file
diff --git a/src/lib/server/apple-music-client.ts b/src/lib/server/apple-music-client.ts
index c48b0f6..421cf7d 100644
--- a/src/lib/server/apple-music-client.ts
+++ b/src/lib/server/apple-music-client.ts
@@ -175,7 +175,7 @@ export async function transformAlbumData(appleMusicAlbum: AppleMusicAlbum) {
 	
 	// Get preview URL from tracks if album doesn't have one
 	let previewUrl = attributes.previews?.[0]?.url
-	let tracks: Array<{ name: string; previewUrl?: string }> = []
+	let tracks: Array<{ name: string; previewUrl?: string; durationMs?: number }> = []
 	
 	// Always fetch tracks to get preview URLs
 	if (appleMusicAlbum.id) {
@@ -209,12 +209,13 @@ export async function transformAlbumData(appleMusicAlbum: AppleMusicAlbum) {
 				.filter((item: any) => item.type === 'songs')
 				.map((track: any) => ({
 					name: track.attributes?.name || 'Unknown',
-					previewUrl: track.attributes?.previews?.[0]?.url
+					previewUrl: track.attributes?.previews?.[0]?.url,
+					durationMs: track.attributes?.durationInMillis
 				}))
 			
 			// Log track details
 			tracks.forEach((track, index) => {
-				console.log(`Track ${index + 1}: ${track.name} - Preview: ${track.previewUrl ? 'Yes' : 'No'}`)
+				console.log(`Track ${index + 1}: ${track.name} - Preview: ${track.previewUrl ? 'Yes' : 'No'} - Duration: ${track.durationMs}ms`)
 			})
 			
 			// Find the first track with a preview if we don't have one
diff --git a/src/lib/types/lastfm.ts b/src/lib/types/lastfm.ts
index 533da12..bbb084f 100644
--- a/src/lib/types/lastfm.ts
+++ b/src/lib/types/lastfm.ts
@@ -26,6 +26,8 @@ export interface Album {
 	url: string
 	rank: number
 	images: AlbumImages
+	isNowPlaying?: boolean
+	nowPlayingTrack?: string
 	appleMusicData?: {
 		appleMusicId?: string
 		highResArtwork?: string
@@ -40,6 +42,7 @@ export interface Album {
 		tracks?: Array<{
 			name: string
 			previewUrl?: string
+			durationMs?: number
 		}>
 	}
 }
diff --git a/src/routes/api/lastfm/+server.ts b/src/routes/api/lastfm/+server.ts
index b4a4d09..3309921 100644
--- a/src/routes/api/lastfm/+server.ts
+++ b/src/routes/api/lastfm/+server.ts
@@ -10,13 +10,24 @@ const LASTFM_API_KEY = process.env.LASTFM_API_KEY
 const USERNAME = 'jedmund'
 const ALBUM_LIMIT = 10
 
+// Store last played tracks with timestamps
+interface TrackPlayInfo {
+	albumName: string
+	trackName: string
+	scrobbleTime: Date
+	durationMs?: number
+}
+
+let recentTracks: TrackPlayInfo[] = []
+
 export const GET: RequestHandler = async ({ url }) => {
 	const client = new LastClient(LASTFM_API_KEY || '')
+	const testMode = url.searchParams.get('test') === 'nowplaying'
 
 	try {
 		// const albums = await getWeeklyAlbumChart(client, USERNAME)
 
-		const albums = await getRecentAlbums(client, USERNAME, ALBUM_LIMIT)
+		const albums = await getRecentAlbums(client, USERNAME, ALBUM_LIMIT, testMode)
 		// console.log(albums)
 		const enrichedAlbums = await Promise.all(
 			albums.slice(0, ALBUM_LIMIT).map(async (album) => {
@@ -58,16 +69,39 @@ async function getWeeklyAlbumChart(client: LastClient, username: string): Promis
 async function getRecentAlbums(
 	client: LastClient,
 	username: string,
-	limit: number
+	limit: number,
+	testMode: boolean = false
 ): Promise<Album[]> {
-	const recentTracks = await client.user.getRecentTracks(username, { limit: 50, extended: true })
+	const recentTracksResponse = await client.user.getRecentTracks(username, { limit: 50, extended: true })
 	const uniqueAlbums = new Map<string, Album>()
-
-	for (const track of recentTracks.tracks) {
+	let nowPlayingTrack: string | undefined
+	let isFirstAlbum = true
+	
+	// Clear old tracks and collect new track play information
+	recentTracks = []
+	
+	for (const track of recentTracksResponse.tracks) {
+		// Store track play information for now playing calculation
+		if (track.date) {
+			recentTracks.push({
+				albumName: track.album.name,
+				trackName: track.name,
+				scrobbleTime: track.date
+			})
+		}
+		
 		if (uniqueAlbums.size >= limit) break
 
+		// Check if this is the currently playing track
+		if (track.nowPlaying && !nowPlayingTrack) {
+			nowPlayingTrack = track.name
+		}
+
 		const albumKey = `${track.album.mbid || track.album.name}`
 		if (!uniqueAlbums.has(albumKey)) {
+			// For testing: mark first album as now playing
+			const isNowPlaying = testMode && isFirstAlbum ? true : (track.nowPlaying || false)
+			
 			uniqueAlbums.set(albumKey, {
 				name: track.album.name,
 				artist: {
@@ -78,7 +112,19 @@ async function getRecentAlbums(
 				images: transformImages(track.images),
 				mbid: track.album.mbid || '',
 				url: track.url,
-				rank: uniqueAlbums.size + 1
+				rank: uniqueAlbums.size + 1,
+				// Mark if this album contains the now playing track
+				isNowPlaying: isNowPlaying,
+				nowPlayingTrack: isNowPlaying ? track.name : undefined
+			})
+			isFirstAlbum = false
+		} else if (track.nowPlaying) {
+			// If album already exists but this track is now playing, update it
+			const existingAlbum = uniqueAlbums.get(albumKey)!
+			uniqueAlbums.set(albumKey, {
+				...existingAlbum,
+				isNowPlaying: true,
+				nowPlayingTrack: track.name
 			})
 		}
 	}
@@ -111,8 +157,12 @@ async function searchAppleMusicForAlbum(album: Album): Promise<Album> {
 				hasPreview: !!cachedData.previewUrl,
 				trackCount: cachedData.tracks?.length || 0
 			})
+			
+			// Check if this album is currently playing based on track durations
+			const updatedAlbum = checkNowPlaying(album, cachedData)
+			
 			return {
-				...album,
+				...updatedAlbum,
 				images: {
 					...album.images,
 					itunes: cachedData.highResArtwork || album.images.itunes
@@ -129,9 +179,12 @@ async function searchAppleMusicForAlbum(album: Album): Promise<Album> {
 
 			// Cache the result for 24 hours
 			await redis.set(cacheKey, JSON.stringify(transformedData), 'EX', 86400)
+			
+			// Check if this album is currently playing based on track durations
+			const updatedAlbum = checkNowPlaying(album, transformedData)
 
 			return {
-				...album,
+				...updatedAlbum,
 				images: {
 					...album.images,
 					itunes: transformedData.highResArtwork || album.images.itunes
@@ -182,3 +235,46 @@ function transformImages(images: LastfmImage[]): AlbumImages {
 
 	return transformedImages
 }
+
+function checkNowPlaying(album: Album, appleMusicData: any): Album {
+	// Don't override if already marked as now playing by Last.fm
+	if (album.isNowPlaying) {
+		return album
+	}
+	
+	// Check if any recent track from this album could still be playing
+	const now = new Date()
+	const SCROBBLE_LAG = 3 * 60 * 1000 // 3 minutes in milliseconds
+	
+	for (const trackInfo of recentTracks) {
+		if (trackInfo.albumName !== album.name) continue
+		
+		// Find the track duration from Apple Music data
+		const trackData = appleMusicData.tracks?.find((t: any) => 
+			t.name.toLowerCase() === trackInfo.trackName.toLowerCase()
+		)
+		
+		if (trackData?.durationMs) {
+			// Calculate when the track should end (scrobble time + duration + lag)
+			const trackEndTime = new Date(trackInfo.scrobbleTime.getTime() + trackData.durationMs + SCROBBLE_LAG)
+			
+			// If current time is before track end time, it's likely still playing
+			if (now < trackEndTime) {
+				console.log(`Detected now playing: "${trackInfo.trackName}" from "${album.name}"`, {
+					scrobbleTime: trackInfo.scrobbleTime,
+					durationMs: trackData.durationMs,
+					estimatedEndTime: trackEndTime,
+					currentTime: now
+				})
+				
+				return {
+					...album,
+					isNowPlaying: true,
+					nowPlayingTrack: trackInfo.trackName
+				}
+			}
+		}
+	}
+	
+	return album
+}