SoulStream/src/mobile/screens/Album.svelte

<script>
    /* A record. Stacked and centred, the cover as the page's own hero, the
       track list under it, the artist's other records at the foot. The
       page wears the record's colour (Mobile.svelte reads its art path). */
    import Icon from "../../components/Icon.svelte";
    import Cover from "../Cover.svelte";
    import Release from "../Release.svelte";
    import { lib, albumById, albumsBy, tracksOf } from "../lib.svelte.js";
    import { player, playAlbum, playAlbumShuffled } from "../player.svelte.js";
    import { push, openHalf, openViewer } from "../nav.svelte.js";
    import { mmss, longDur, albumFmt, fmtBytes } from "../util.js";

    let { id, screenEl = null } = $props();

    const album = $derived(albumById(id));
    let tracks = $state([]);
    $effect(() => {
        const a = album;
        if (!a) return;
        tracksOf(a.id).then((t) => { tracks = t || []; }, (e) => { player.error = String(e); });
    });

    const discs = $derived.by(() => {
        const m = new Map();
        for (const t of tracks) {
            const d = t.disc_no ?? 1;
            if (!m.has(d)) m.set(d, []);
            m.get(d).push(t);
        }
        return [...m.entries()].sort((a, b) => a[0] - b[0]);
    });
    const fmt = $derived(albumFmt(tracks));
    const total = $derived(tracks.reduce((n, t) => n + (t.duration_secs || 0), 0));
    const more = $derived(album ? albumsBy(album.artist).filter((x) => x.id !== album.id) : []);
    const various = $derived(tracks.some((t) => t.artist && album && t.artist !== album.artist));

    function playAt(t) { playAlbum(album, tracks, Math.max(0, tracks.indexOf(t))); }
    function isPlaying(t) { return player.track?.path === t.path; }
</script>

{#if album}
    <div class="rec-head">
        <div class="rec-cover" onclick={() => openViewer(album.art_path)} role="presentation"><Cover path={album.art_path} eager size={48} /></div>
        <div class="rec-meta">
            <div class="rec-title">{album.title}</div>
            <button class="rec-artist" onclick={() => push("artist", { name: album.artist }, screenEl)}>{album.artist}</button>
            <div class="rec-line">{album.year ?? "—"} · {tracks.length || album.track_count} tracks{total ? ` · ${longDur(total)}` : ""}</div>
            {#if fmt}
                <div class="stats rec-chips">
                    <span class="s"><Icon name="disc" size={12} strokeWidth={3} />{fmt}</span>
                    <span class="s"><Icon name="hard-drive" size={12} strokeWidth={3} />{lib.stats[album.id]?.bytes ? fmtBytes(lib.stats[album.id].bytes) : "in your library"}</span>
                    {#if lib.stats[album.id]?.avg_kbps}<span class="s">{lib.stats[album.id].avg_kbps} kbps</span>{/if}
                </div>
            {/if}
            <div class="rec-acts">
                <button class="iconbtn muted" onclick={() => playAlbumShuffled(album, tracks)} aria-label="Shuffle"><Icon name="shuffle" size={22} /></button>
                <button class="disc lg" onclick={() => tracks.length && playAt(tracks[0])} aria-label="Play"><Icon name="play" size={26} /></button>
                <button class="iconbtn muted" onclick={() => openHalf("album", { album, tracks })} aria-label="More"><Icon name="more" size={22} /></button>
            </div>
        </div>
    </div>

    {#each discs as [d, list] (d)}
        {#if discs.length > 1}<div class="disc-head">Disc {d}</div>{/if}
        <div class="tracks">
            {#each list as t, i (t.id)}
                <button class="trk" class:playing={isPlaying(t)} onclick={() => playAt(t)} oncontextmenu={(e) => { e.preventDefault(); openHalf("track", { album, track: t }); }}>
                    <span class="n">{t.track_no ?? i + 1}</span>
                    <span class="b">
                        <span class="t">{t.title}</span>
                        {#if various && t.artist}<span class="m">{t.artist}</span>{/if}
                    </span>
                    <span class="d">{mmss(t.duration_secs)}</span>
                    <span class="r" role="button" tabindex="0" aria-label="More" onkeydown={() => {}}
                        onclick={(e) => { e.stopPropagation(); openHalf("track", { album, track: t }); }}>
                        <Icon name="more" size={17} />
                    </span>
                </button>
            {/each}
        </div>
    {/each}

    {#if more.length}
        <div class="sec">
            <h2>More by {album.artist}</h2>
            <button class="all" onclick={() => push("artist", { name: album.artist }, screenEl)}>All<Icon name="chevron-right" size={14} /></button>
        </div>
        <div class="rail">
            {#each more as x (x.id)}
                <Release title={x.title} sub={String(x.year || "")} path={x.art_path} onclick={() => push("album", { id: x.id }, screenEl)} />
            {/each}
        </div>
    {/if}
{:else}
    <div class="stub" style="margin-top: calc(var(--bar-h) + 10px)"><b>That record is gone.</b>It is no longer in the library.</div>
{/if}

<div class="endpad"></div>