// Round sixteen: the desktop Library's summary hours on the count line, its
// "By format" order (the file stats), and the empty Search page's Jump back
// in — the last records played, as the desktop's empty search shows them.
const fs = require('fs');
const root = 'F:/Coding/SoulStream/';
let p, s;
const load = (file) => { p = file; s = fs.readFileSync(root + p, 'utf8'); };
const save = () => fs.writeFileSync(root + p, s);
const once = (a) => {
    const i = s.indexOf(a);
    if (i < 0) throw new Error('missing in ' + p + ': ' + a.slice(0, 90));
    if (s.indexOf(a, i + 1) >= 0) throw new Error('ambiguous in ' + p + ': ' + a.slice(0, 90));
    return i;
};
const rep = (a, b) => { once(a); s = s.replace(a, () => b); };

// ── Library: hours on the count line, By format ──
load('src/mobile/screens/Library.svelte');
rep(`    const SORTS = [["added", "Recently added"], ["az", "A–Z"], ["artist", "By artist"], ["year", "By year"]];`,
    `    const SORTS = [["added", "Recently added"], ["az", "A–Z"], ["artist", "By artist"], ["year", "By year"], ["format", "By format"]];`);
rep(`            if (sort === "year") return (y.year || 0) - (x.year || 0) || y.added_at - x.added_at;
            return y.added_at - x.added_at;`,
`            if (sort === "year") return (y.year || 0) - (x.year || 0) || y.added_at - x.added_at;
            if (sort === "format") {
                /* lossless first, then the higher bitrate, then the name */
                const fx = fmtRank(lib.stats[x.id]);
                const fy = fmtRank(lib.stats[y.id]);
                return fy - fx || x.title.localeCompare(y.title);
            }
            return y.added_at - x.added_at;`);
rep(`    const totalTracks = $derived(lib.albums.reduce((n, a) => n + (a.track_count || 0), 0));`,
`    const totalTracks = $derived(lib.albums.reduce((n, a) => n + (a.track_count || 0), 0));
    const totalSecs = $derived(Object.values(lib.stats).reduce((n, st) => n + (st.secs || 0), 0));
    const hours = $derived(totalSecs >= 3600 ? Math.round(totalSecs / 3600) + " hours" : totalSecs ? Math.round(totalSecs / 60) + " min" : "");
    /* By format: a number the sort can compare — lossless by depth and rate, lossy by bitrate */
    function fmtRank(st) {
        if (!st || !st.formats?.length) return 0;
        if (st.bit_depth && st.sample_rate) return 1_000_000 + st.bit_depth * 1000 + Math.round(st.sample_rate / 1000);
        return st.avg_kbps || 1;
    }`);
rep(`        <span class="t-sub">{list.length} album{list.length === 1 ? "" : "s"} · {totalTracks} tracks</span>`,
    `        <span class="t-sub">{list.length} album{list.length === 1 ? "" : "s"} · {totalTracks} tracks{hours ? " · " + hours : ""}</span>`);
rep(`                <Release title={a.title} sub={sort === "year" ? String(a.year || "") : a.artist} path={a.art_path} badge={statLabel(lib.stats[a.id]) || null}`,
    `                <Release title={a.title} sub={sort === "year" ? String(a.year || "") : sort === "format" ? (statLabel(lib.stats[a.id]) || a.artist) : a.artist} path={a.art_path} badge={statLabel(lib.stats[a.id]) || null}`);
save();
load('src/mobile/HalfSheet.svelte');
rep(`    const SORTS = [["added", "Recently added"], ["az", "A–Z"], ["artist", "By artist"], ["year", "By year"]];`,
    `    const SORTS = [["added", "Recently added"], ["az", "A–Z"], ["artist", "By artist"], ["year", "By year"], ["format", "By format"]];`);
save();

// ── Search: Jump back in on the empty page ──
load('src/mobile/screens/Search.svelte');
rep(`    {#if recents.length}
        <div class="sec"><h2>Recent</h2><button class="all" onclick={() => { recents = []; keepRecents(); }}>Clear</button></div>`,
`    {#if lib.recents.length}
        <div class="sec"><h2>Jump back in <em>· picks up where you left off</em></h2></div>
        <div class="rail">
            {#each lib.recents.slice(0, 8) as r (r.album_id)}
                <Release title={r.title} sub={r.artist} path={r.art_path} onclick={() => push("album", { id: r.album_id }, screenEl)} />
            {/each}
        </div>
    {/if}
    {#if recents.length}
        <div class="sec"><h2>Recent</h2><button class="all" onclick={() => { recents = []; keepRecents(); }}>Clear</button></div>`);
save();

// ── the mock: a few recents, so Jump back in has something ──
load('src/lib/mockLibrary.js');
rep(`    if (cmd === "recent_albums") return Promise.resolve([]);`,
`    if (cmd === "recent_albums") return Promise.resolve(albums.slice(0, 3).map((a, i) => ({ kind: "library", album_id: a.id, title: a.title, artist: a.artist, art_path: a.art_path, last_played_at: Math.floor(Date.now() / 1000) - 3600 * (i + 1) })));`);
save();

// ── the walks ──
load('tests/mobile/smoke.mjs');
rep(`        rooms: document.querySelectorAll('.screen button.row .art.hash').length,`,
`        rooms: document.querySelectorAll('.screen button.row .art.hash').length,
        jump: document.querySelectorAll('.screen .rail .release').length,
        countline: (document.querySelector('.countline .t-sub') || {}).textContent || '',
        firstBadge: (document.querySelector('.grid2 .release .ed-badge') || {}).textContent || '',`);
rep(`    "search-recent": (i) => i.title.startsWith("Search") && i.recents >= 1,`,
    `    "search-recent": (i) => i.title.startsWith("Search") && i.recents >= 1 && i.jump >= 1,`);
rep(`    library: (i) => i.title.startsWith("Your library") && i.fmtBadges >= 10,`,
    `    library: (i) => i.title.startsWith("Your library") && i.fmtBadges >= 10 && /hours/.test(i.countline),`);
rep(`    { do: \`document.querySelectorAll('.segtabs button')[1].click()\`, name: "artists", wait: 600 },`,
`    /* By format: the hi-res lossless records come first */
    { do: \`__click('.chips .chip', 'By format')\`, name: "library-by-format", wait: 500 },
    { do: \`__click('.chips .chip', 'Recently added')\`, wait: 400 },
    { do: \`document.querySelectorAll('.segtabs button')[1].click()\`, name: "artists", wait: 600 },`);
rep(`    artists: (i) => i.title.startsWith("Your library") && i.rowArt >= 3,`,
`    "library-by-format": (i) => /^FLAC 24/.test(i.firstBadge),
    artists: (i) => i.title.startsWith("Your library") && i.rowArt >= 3,`);
save();

// ── the doc ──
load('ANDROID.md');
rep(`The Library's cards wear the desktop's file stats`, `The Library's count line carries the collection's hours and the sort
offers By format (lossless by depth and rate first, then by bitrate); the
empty Search page shows Jump back in, the desktop's. The Library's cards wear the desktop's file stats`);
save();
console.log('round sixteen wired');