From fd02e4cf0020bfdb94093dc6290941e75f41be24 Mon Sep 17 00:00:00 2001
From: pleb <pleb@brenise.dev>
Date: Sun, 2 Nov 2025 15:09:30 -0800
Subject: [PATCH] Show maps for each playlist, basic functionality

---
 src/app.css                                   |  12 +
 .../tools/map-pack-discovery/+page.svelte     | 364 +++++++++++++++---
 .../map-pack-discovery/playlist/+server.ts    |  23 ++
 3 files changed, 350 insertions(+), 49 deletions(-)
 create mode 100644 src/routes/tools/map-pack-discovery/playlist/+server.ts

diff --git a/src/app.css b/src/app.css
index a5af7e5..c597220 100644
--- a/src/app.css
+++ b/src/app.css
@@ -29,6 +29,18 @@ body {
   @apply bg-bg text-white/90 antialiased;
 }
 
+p a {
+  color: var(--color-neon);
+  text-decoration: underline;
+  text-decoration-color: rgba(34, 211, 238, 0.4);
+  transition: color 0.2s ease, text-decoration-color 0.2s ease;
+}
+
+p a:hover {
+  color: color-mix(in srgb, var(--color-neon) 80%, white 20%);
+  text-decoration-color: rgba(34, 211, 238, 0.85);
+}
+
 /* Utilities */
 @utility btn-neon {
   @apply inline-flex items-center gap-2 rounded-md border border-neon/60 px-4 py-2 text-neon transition hover:border-neon hover:text-white focus:outline-none focus:ring-2 focus:ring-neon/50;
diff --git a/src/routes/tools/map-pack-discovery/+page.svelte b/src/routes/tools/map-pack-discovery/+page.svelte
index e5f20dd..e1c1f28 100644
--- a/src/routes/tools/map-pack-discovery/+page.svelte
+++ b/src/routes/tools/map-pack-discovery/+page.svelte
@@ -1,11 +1,31 @@
 <script lang="ts">
   import HasToolAccess from '$lib/components/HasToolAccess.svelte';
-  import type { PlaylistFull } from '$lib/server/beatsaver';
+  import MapCard from '$lib/components/MapCard.svelte';
+  import type { MapDetailWithOrder, MapDetail, MapVersion, MapDifficulty, PlaylistFull } from '$lib/server/beatsaver';
   import type { BeatLeaderPlayerProfile } from '$lib/utils/plebsaber-utils';
   import { TOOL_REQUIREMENTS } from '$lib/utils/plebsaber-utils';
 
   type PlaylistWithStats = PlaylistFull & { stats?: PlaylistFull['stats'] };
 
+  type PlaylistSongCard = {
+    id: string;
+    hash: string;
+    coverURL?: string;
+    songName: string;
+    mapper?: string;
+    timeset?: number;
+    diffName: string;
+    modeName: string;
+    beatsaverKey?: string;
+    publishedLabel: string;
+  };
+
+  type PlaylistState = {
+    loading: boolean;
+    maps: PlaylistSongCard[];
+    error: string | null;
+  };
+
   export let data: {
     playlists: PlaylistWithStats[];
     page: number;
@@ -33,11 +53,102 @@
   $: hasNext = totalPages != null ? page < totalPages : playlists.length > 0 && playlists.length === pageSize;
   $: prevHref = hasPrev ? `?page=${page - 1}` : null;
   $: nextHref = hasNext ? `?page=${page + 1}` : null;
+let expanded: Record<number, boolean> = {};
+let playlistState: Record<number, PlaylistState> = {};
 
-  function formatScore(avgScore: number | undefined | null): string | null {
-    if (typeof avgScore !== 'number' || !Number.isFinite(avgScore)) return null;
-    return `${(avgScore * 100).toFixed(1)}%`;
+function togglePlaylist(id: number) {
+  const currentlyExpanded = Boolean(expanded[id]);
+  expanded = { ...expanded, [id]: !currentlyExpanded };
+  if (!currentlyExpanded && !playlistState[id]) {
+    loadPlaylistMaps(id);
   }
+}
+
+  async function loadPlaylistMaps(id: number) {
+    playlistState = {
+      ...playlistState,
+      [id]: { loading: true, maps: [], error: null }
+    };
+    try {
+      const res = await fetch(`/tools/map-pack-discovery/playlist?id=${encodeURIComponent(String(id))}`);
+      if (!res.ok) throw new Error(`Failed to load playlist ${id}: ${res.status}`);
+      const payload = (await res.json()) as { maps?: MapDetailWithOrder[] | null };
+      const maps = Array.isArray(payload?.maps) ? payload.maps : [];
+      const cards = maps
+        .map((entry) => mapEntryToCard(entry))
+        .filter((card): card is PlaylistSongCard => card !== null)
+        .slice(0, 10);
+      playlistState = {
+        ...playlistState,
+        [id]: { loading: false, maps: cards, error: null }
+      };
+    } catch (err) {
+      playlistState = {
+        ...playlistState,
+        [id]: { loading: false, maps: [], error: err instanceof Error ? err.message : 'Failed to load playlist songs' }
+      };
+    }
+  }
+
+  function getPublishedVersion(map: MapDetail | undefined | null) {
+    const versions = map?.versions ?? [];
+    return versions.find((v) => v.state === 'Published') ?? versions[0];
+  }
+
+  function getPrimaryDifficulty(version: MapVersion | undefined | null): MapDifficulty | null {
+    const diffs = version?.diffs ?? [];
+    return diffs.length > 0 ? diffs[0] : null;
+  }
+
+  function toEpochSeconds(value: string | undefined | null): number | undefined {
+    if (!value) return undefined;
+    const ts = Date.parse(value);
+    if (Number.isNaN(ts)) return undefined;
+    return Math.floor(ts / 1000);
+  }
+
+  function formatDate(value: string | undefined | null): string {
+    if (!value) return '';
+    const date = new Date(value);
+    if (Number.isNaN(date.getTime())) return '';
+    return date.toLocaleDateString();
+  }
+
+  function mapEntryToCard(entry: MapDetailWithOrder): PlaylistSongCard | null {
+    const map = entry.map;
+    if (!map) return null;
+    const version = getPublishedVersion(map);
+    if (!version) return null;
+    const diff = getPrimaryDifficulty(version);
+    const published = map.lastPublishedAt ?? map.createdAt;
+    const hash = version.hash ?? map.id;
+    if (!hash) return null;
+
+    return {
+      id: map.id ?? hash,
+      hash,
+      coverURL: version.coverURL,
+      songName: map.name,
+      mapper: map.uploader?.name ?? undefined,
+      timeset: toEpochSeconds(published),
+      diffName: diff?.difficulty ?? 'Unknown',
+      modeName: diff?.characteristic ?? 'Standard',
+      beatsaverKey: version.key ?? map.id,
+      publishedLabel: formatDate(published)
+    };
+  }
+
+function formatScore(avgScore: number | undefined | null): string | null {
+  if (typeof avgScore !== 'number' || !Number.isFinite(avgScore)) return null;
+  return `${(avgScore * 100).toFixed(1)}%`;
+}
+
+function scorePercent(avgScore: number | undefined | null): number | null {
+  if (typeof avgScore !== 'number' || !Number.isFinite(avgScore)) return null;
+  const pct = avgScore * 100;
+  if (!Number.isFinite(pct)) return null;
+  return Math.min(100, Math.max(0, pct));
+}
 
   function playlistLink(id: number | string | undefined): string {
     if (id === undefined || id === null) return playlistBaseUrl;
@@ -53,7 +164,7 @@
 <section class="py-8">
   <h1 class="font-display text-3xl sm:text-4xl">Map Pack Discovery</h1>
   <p class="mt-2 text-muted max-w-2xl">
-    Browse curated BeatSaver playlists with quick access to pack covers, curators, and their overall rating.
+    See <strong><a href="https://bsaber.com/playlists" target="_blank" rel="noreferrer">Featured Packs</a> on Beast Saber</strong> for curated map packs. Otherwise, this page aims to provide a discovery tool for finding any and all map packs.
   </p>
 
   <HasToolAccess player={data?.player ?? null} requirement={requirement} adminRank={data?.adminRank ?? null} adminPlayer={data?.adminPlayer ?? null}>
@@ -75,39 +186,78 @@
         {/if}
       </div>
 
-      <div class="mt-6 grid gap-5 sm:grid-cols-2 xl:grid-cols-3">
+      <div class="mt-6 space-y-3">
         {#each playlists as playlist (playlist.playlistId)}
-          <article class="card-surface overflow-hidden">
-            <a class="block" href={playlistLink(playlist.playlistId)} target="_blank" rel="noopener noreferrer">
-              <figure class="playlist-cover">
-                <img
-                  src={playlist.playlistImage}
-                  alt={`Playlist cover for ${playlist.name}`}
-                  loading="lazy"
-                />
-              </figure>
-            </a>
-            <div class="p-4 space-y-3">
-              <div>
-                <a class="playlist-title" href={playlistLink(playlist.playlistId)} target="_blank" rel="noopener noreferrer">{playlist.name}</a>
-                {#if playlist.description}
-                  <p class="mt-1 line-clamp-3 text-sm text-muted">{playlist.description}</p>
+          <article class="playlist-row card-surface">
+            <button class="row-header" type="button" on:click={() => togglePlaylist(playlist.playlistId)}>
+              <div class="row-cover">
+                <img src={playlist.playlistImage} alt={`Playlist cover for ${playlist.name}`} loading="lazy" />
+              </div>
+              <div class="row-main">
+                <div class="row-title">
+                  <a href={playlistLink(playlist.playlistId)} target="_blank" rel="noopener noreferrer" on:click|stopPropagation>
+                    {playlist.name}
+                  </a>
+                  <span class="map-count">{playlist.stats?.totalMaps ?? 0} maps</span>
+                </div>
+                <div class="row-sub">
+                  <span>
+                    by
+                    {#if playlist.owner?.name}
+                      <a href={profileLink(playlist.owner.id)} target="_blank" rel="noopener noreferrer" on:click|stopPropagation>
+                        {playlist.owner.name}
+                      </a>
+                    {:else}
+                      Unknown curator
+                    {/if}
+                  </span>
+                </div>
+                {#if scorePercent(playlist.stats?.avgScore) !== null}
+                  <div class="row-score">
+                    <span class="score-label">Score {formatScore(playlist.stats?.avgScore)}</span>
+                    <div class="score-bar">
+                      <div class="score-bar-fill" style={`width: ${scorePercent(playlist.stats?.avgScore) ?? 0}%`}></div>
+                    </div>
+                  </div>
                 {/if}
               </div>
+              <div class:arrow-expanded={Boolean(expanded[playlist.playlistId])} class="row-arrow" aria-hidden="true">
+                <svg viewBox="0 0 24 24" width="20" height="20" role="presentation">
+                  <path d="M6 9l6 6 6-6" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
+                </svg>
+              </div>
+            </button>
 
-              <div class="flex items-center justify-between text-sm text-muted">
-                <span>
-                  {#if playlist.owner?.name}
-                    <a class="hover:text-white transition-colors" href={profileLink(playlist.owner.id)} target="_blank" rel="noopener noreferrer">{playlist.owner.name}</a>
-                  {:else}
-                    Unknown curator
-                  {/if}
-                </span>
-                {#if formatScore(playlist.stats?.avgScore)}
-                  <span class="font-medium text-white">{formatScore(playlist.stats?.avgScore)}</span>
+            {#if expanded[playlist.playlistId]}
+              <div class="row-body">
+                {#if playlistState[playlist.playlistId]?.loading}
+                  <div class="row-status">Loading songs…</div>
+                {:else if playlistState[playlist.playlistId]?.error}
+                  <div class="row-status error">{playlistState[playlist.playlistId]?.error}</div>
+                {:else if playlistState[playlist.playlistId]?.maps?.length}
+                  <div class="songs-grid">
+                    {#each playlistState[playlist.playlistId].maps as card (card.id)}
+                      <MapCard
+                        hash={card.hash}
+                        coverURL={card.coverURL}
+                        songName={card.songName}
+                        mapper={card.mapper}
+                        timeset={card.timeset}
+                        diffName={card.diffName}
+                        modeName={card.modeName}
+                        beatsaverKey={card.beatsaverKey}
+                      >
+                        <svelte:fragment slot="content">
+                          <div class="song-extra">Published {card.publishedLabel}</div>
+                        </svelte:fragment>
+                      </MapCard>
+                    {/each}
+                  </div>
+                {:else}
+                  <div class="row-status">No songs found.</div>
                 {/if}
               </div>
-            </div>
+            {/if}
           </article>
         {/each}
       </div>
@@ -126,30 +276,154 @@
 </section>
 
 <style>
-  .playlist-cover {
-    aspect-ratio: 16 / 9;
-    background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 58, 138, 0.4));
-    display: block;
+  .playlist-row {
+    padding: 0;
+    overflow: hidden;
   }
 
-  .playlist-cover img {
+  .row-header {
     width: 100%;
+    display: grid;
+    grid-template-columns: auto 1fr auto;
+    gap: 1rem;
+    align-items: center;
+    padding: 1rem 1.25rem;
+    background: transparent;
+    color: inherit;
+    border: none;
+    cursor: pointer;
+    text-align: left;
+  }
+
+  .row-cover {
+    height: 3em;
+    width: auto;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    overflow: hidden;
+    border-radius: 0.5rem;
+    background: rgba(15, 23, 42, 0.6);
+  }
+
+  .row-cover img {
     height: 100%;
-    object-fit: cover;
+    width: auto;
     display: block;
   }
 
-  .playlist-title {
-    font-size: 1.1rem;
+  .row-main {
+    display: flex;
+    flex-direction: column;
+    gap: 0.4rem;
+  }
+
+  .row-title {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    font-size: 1.05rem;
     font-weight: 600;
+  }
+
+  .row-title a {
     color: white;
     text-decoration: none;
   }
 
-  .playlist-title:hover {
+  .row-title a:hover {
     text-decoration: underline;
   }
 
+  .map-count {
+    font-size: 0.85rem;
+    color: rgba(148, 163, 184, 0.85);
+  }
+
+  .row-sub {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem;
+    font-size: 0.9rem;
+    color: rgba(148, 163, 184, 0.95);
+  }
+
+  .row-sub a {
+    color: var(--color-neon);
+    text-decoration: none;
+  }
+
+  .row-sub a:hover {
+    text-decoration: underline;
+    color: color-mix(in srgb, var(--color-neon) 80%, white 20%);
+  }
+
+  .row-score {
+    display: flex;
+    flex-direction: column;
+    gap: 0.4rem;
+    max-width: 280px;
+  }
+
+  .score-label {
+    font-size: 0.85rem;
+    color: rgba(148, 163, 184, 0.9);
+  }
+
+  .score-bar {
+    position: relative;
+    width: 100%;
+    height: 0.5rem;
+    border-radius: 999px;
+    background: rgba(34, 211, 238, 0.15);
+    overflow: hidden;
+  }
+
+  .score-bar-fill {
+    position: absolute;
+    inset: 0;
+    width: 0;
+    border-radius: inherit;
+    background: linear-gradient(90deg, var(--color-neon), var(--color-neon-fuchsia));
+    transition: width 0.3s ease;
+  }
+
+  .row-arrow {
+    transition: transform 0.2s ease;
+    color: rgba(148, 163, 184, 0.8);
+  }
+
+  .row-arrow.arrow-expanded {
+    transform: rotate(180deg);
+    color: var(--color-neon);
+  }
+
+  .row-body {
+    border-top: 1px solid rgba(148, 163, 184, 0.08);
+    padding: 1rem 1.25rem 1.25rem;
+  }
+
+  .row-status {
+    color: rgba(148, 163, 184, 0.95);
+    font-size: 0.9rem;
+  }
+
+  .row-status.error {
+    color: #f87171;
+  }
+
+  .songs-grid {
+    display: grid;
+    gap: 1rem;
+    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
+  }
+
+  .song-extra {
+    margin-top: 0.5rem;
+    font-size: 0.85rem;
+    color: rgba(148, 163, 184, 0.85);
+  }
+
   .pager-btn {
     display: inline-flex;
     align-items: center;
@@ -180,14 +454,6 @@
     overflow: hidden;
   }
 
-  .line-clamp-3 {
-    display: -webkit-box;
-    -webkit-line-clamp: 3;
-    -webkit-box-orient: vertical;
-    line-clamp: 3;
-    overflow: hidden;
-  }
-
   .text-danger {
     color: #f87171;
   }
diff --git a/src/routes/tools/map-pack-discovery/playlist/+server.ts b/src/routes/tools/map-pack-discovery/playlist/+server.ts
new file mode 100644
index 0000000..0b67f27
--- /dev/null
+++ b/src/routes/tools/map-pack-discovery/playlist/+server.ts
@@ -0,0 +1,23 @@
+import { createBeatSaverAPI, type MapDetailWithOrder, type PlaylistPage } from '$lib/server/beatsaver';
+import { error, json } from '@sveltejs/kit';
+
+export const GET = async ({ url, fetch }) => {
+  const idParam = url.searchParams.get('id');
+  if (!idParam) {
+    throw error(400, 'Missing playlist id');
+  }
+
+  const api = createBeatSaverAPI(fetch);
+  try {
+    const detail = (await api.getPlaylistDetail(idParam, { page: 0, useCache: false })) as PlaylistPage;
+    const maps = Array.isArray(detail?.maps) ? detail.maps : [];
+    const topTen: MapDetailWithOrder[] = maps.slice(0, 10);
+
+    return json({ playlist: detail?.playlist ?? null, maps: topTen });
+  } catch (err) {
+    console.error('Failed to load playlist detail', idParam, err);
+    throw error(502, 'Failed to load playlist detail');
+  }
+};
+
+