(function () {
  const H = s => { let h = 2166136261; for (let i = 0; i < s.length; i++) { h ^= s.charCodeAt(i); h = Math.imul(h, 16777619); } return h >>> 0; };
  const clamp = (v, a, b) => Math.max(a, Math.min(b, v));
  const fmt = s => { s = Math.max(0, Math.floor(s)); return Math.floor(s / 60) + ':' + String(s % 60).padStart(2, '0'); };
  const plural = (n, f) => { const a = n % 10, b = n % 100; return f[(a === 1 && b !== 11) ? 0 : (a >= 2 && a <= 4 && (b < 10 || b >= 20)) ? 1 : 2]; };

  const AR = {
    kino: ['Кино', 'Русский рок', 0.62], zemfira: ['Земфира', 'Рок', 0.55], radiohead: ['Radiohead', 'Альтернатива', 0.45],
    massive: ['Massive Attack', 'Трип-хоп', 0.38], moderat: ['Moderat', 'Электроника', 0.66], bonobo: ['Bonobo', 'Даунтемпо', 0.48],
    daftpunk: ['Daft Punk', 'Электроника', 0.78], splean: ['Сплин', 'Русский рок', 0.56]
  };
  const AL = [
    ['rh-ir', 'In Rainbows', 'radiohead', 2007, '#F2A23A', '#1C3B6E', ['15 Step', 'Bodysnatchers', 'Nude', 'Weird Fishes/Arpeggi', 'All I Need', 'Faust Arp', 'Reckoner', 'House of Cards', 'Jigsaw Falling into Place', 'Videotape']],
    ['kino-gk', 'Группа крови', 'kino', 1988, '#C2412D', '#2A0E0A', ['Группа крови', 'Закрой за мной дверь, я ухожу', 'Война', 'Спокойная ночь', 'Мама, мы все сошли с ума', 'Бошетунмай', 'Попробуй спеть вместе со мной', 'Звезда']],
    ['kino-zs', 'Звезда по имени Солнце', 'kino', 1989, '#E39B2D', '#3A1A05', ['Звезда по имени Солнце', 'Песня без слов', 'Место для шага вперёд', 'Невесёлая песня', 'Апрель', 'Пачка сигарет']],
    ['zem-pm', 'Прости меня моя любовь', 'zemfira', 2000, '#D9467A', '#2B0B23', ['Хочешь?', 'Искала', 'Ромашки', 'Непошлое', 'Прости меня моя любовь', 'Город']],
    ['ma-mz', 'Mezzanine', 'massive', 1998, '#6A7385', '#0E1116', ['Angel', 'Risingson', 'Teardrop', 'Inertia Creeps', 'Exchange', 'Dissolved Girl']],
    ['mod-2', 'II', 'moderat', 2013, '#3A7BFF', '#0A1636', ['The Mark', 'Bad Kingdom', 'Versions', 'Let in the Light', 'Milk', 'Damage Done']],
    ['bon-mg', 'Migration', 'bonobo', 2017, '#2FB6A0', '#0B2730', ['Migration', 'Break Apart', 'Outlier', 'Kerala', 'Grains', 'No Reason']],
    ['dp-ram', 'Random Access Memories', 'daftpunk', 2013, '#A7AFBF', '#141821', ['Give Life Back to Music', 'The Game of Love', 'Instant Crush', 'Lose Yourself to Dance', 'Get Lucky', "Doin' It Right"]],
    ['spl-ga', 'Гранатовый альбом', 'splean', 1998, '#B4233A', '#1D0710', ['Орбит без сахара', 'Пластмассовая жизнь', 'Иди через лес', 'Феллини']]
  ];
  const ART = {}, ALB = {}, TR = {}, ALL = [];
  Object.keys(AR).forEach(k => { ART[k] = { id: k, name: AR[k][0], genre: AR[k][1], energy: AR[k][2], albums: [], tracks: [] }; });
  AL.forEach(([id, title, ar, year, c1, c2, list]) => {
    const cover = `radial-gradient(circle at 28% 22%, rgba(255,255,255,.32), rgba(255,255,255,0) 55%), linear-gradient(140deg, ${c1}, ${c2})`;
    ALB[id] = { id, title, artistId: ar, year, c1, c2, cover, tracks: [] };
    const A = ART[ar];
    A.albums.push(id);
    if (!A.c1) { A.c1 = c1; A.c2 = c2; A.avatar = `radial-gradient(circle at 35% 28%, ${c1}, ${c2} 78%)`; A.banner = `radial-gradient(ellipse at 20% 0%, ${c1}55, transparent 60%), linear-gradient(180deg, ${c2}cc, transparent)`; }
    list.forEach((t, i) => {
      const h = H(id + t), tid = id + '-' + i;
      TR[tid] = { id: tid, title: t, artistId: ar, albumId: id, n: i + 1, dur: 150 + h % 170, bpm: 72 + h % 74, energy: clamp(AR[ar][2] + ((h >> 3) % 40 - 20) / 100, 0.05, 0.98), pop: h % 100 };
      ALB[id].tracks.push(tid); A.tracks.push(tid); ALL.push(tid);
    });
  });

  const ACT = [['run', 'Бегаю', 'directions_run', 0.85], ['wake', 'Просыпаюсь', 'wb_twilight', 0.55], ['focus', 'Работаю', 'center_focus_strong', 0.4], ['gym', 'Тренировка', 'fitness_center', 0.92], ['road', 'В дороге', 'directions_car', 0.6], ['rest', 'Отдыхаю', 'weekend', 0.35], ['sleep', 'Засыпаю', 'bedtime', 0.15]];
  const MOOD = [['energy', 'Энергичное', 'bolt', 0.85, '#2F80FF', '#35D3FF', '#7CF0FF'], ['happy', 'Весёлое', 'sentiment_satisfied', 0.7, '#2F80FF', '#35D3FF', '#9B7CFF'], ['calm', 'Спокойное', 'spa', 0.3, '#2F80FF', '#6C7CFF', '#5AD1E6'], ['sad', 'Грустное', 'water_drop', 0.22, '#3B5BFF', '#7C5CFF', '#24317A']];

  function waveBatch(n, opts) {
    const { activity, mood, dislikes = [], likes = [], recent = [], artistId } = opts || {};
    const tg = [];
    if (activity) tg.push(ACT.find(a => a[0] === activity)[3]);
    if (mood) tg.push(MOOD.find(m => m[0] === mood)[3]);
    const target = tg.length ? tg.reduce((a, b) => a + b, 0) / tg.length : 0.55;
    return ALL.filter(id => !dislikes.includes(id) && !recent.includes(id))
      .map(id => {
        const t = TR[id];
        let sc = -Math.abs(t.energy - target) * 1.4 + (likes.includes(id) ? 0.2 : 0) + Math.random() * 0.35;
        if (artistId) sc += t.artistId === artistId ? 0.8 : (ART[t.artistId].genre === ART[artistId].genre ? 0.35 : 0);
        return [id, sc];
      })
      .sort((a, b) => b[1] - a[1]).slice(0, n).map(x => x[0]);
  }

  const EN = "qwertyuiop[]asdfghjkl;'zxcvbnm,.`", RU = 'йцукенгшщзхъфывапролджэячсмитьбюё';
  const swapLayout = q => q.split('').map(c => { const l = c.toLowerCase(); const i = EN.indexOf(l); if (i >= 0) return RU[i]; const j = RU.indexOf(l); if (j >= 0) return EN[j]; return c; }).join('');
  const TL = { а: 'a', б: 'b', в: 'v', г: 'g', д: 'd', е: 'e', ж: 'zh', з: 'z', и: 'i', й: 'y', к: 'k', л: 'l', м: 'm', н: 'n', о: 'o', п: 'p', р: 'r', с: 's', т: 't', у: 'u', ф: 'f', х: 'h', ц: 'c', ч: 'ch', ш: 'sh', щ: 'sch', ъ: '', ы: 'y', ь: '', э: 'e', ю: 'yu', я: 'ya' };
  const norm = s => s.toLowerCase().replace(/ё/g, 'е').replace(/[^a-zа-я0-9 ]/g, ' ').replace(/\s+/g, ' ').trim();
  const tl = s => s.split('').map(c => TL[c] ?? c).join('');
  const lev = (a, b) => { const d = Array.from({ length: a.length + 1 }, (_, i) => [i]); for (let j = 1; j <= b.length; j++) d[0][j] = j; for (let i = 1; i <= a.length; i++) for (let j = 1; j <= b.length; j++) d[i][j] = Math.min(d[i - 1][j] + 1, d[i][j - 1] + 1, d[i - 1][j - 1] + (a[i - 1] === b[j - 1] ? 0 : 1)); return d[a.length][b.length]; };
  const m1 = (n, q) => { if (n.includes(q)) return true; if (q.length >= 4) return n.split(' ').some(w => lev(w.slice(0, q.length), q) <= 1) || lev(n.slice(0, q.length), q) <= 1; return false; };
  const match = (name, q) => { const n = norm(name), qq = norm(q); if (!qq) return false; return m1(n, qq) || m1(tl(n), tl(qq)); };
  function searchRaw(q) {
    const artists = Object.values(ART).filter(a => match(a.name, q));
    const albums = Object.values(ALB).filter(a => match(a.title, q) || match(ART[a.artistId].name, q));
    const tracks = ALL.filter(id => match(TR[id].title, q) || match(ART[TR[id].artistId].name, q)).sort((a, b) => TR[b].pop - TR[a].pop);
    return { artists, albums, tracks };
  }
  function search(q) {
    let r = searchRaw(q), fixed = null;
    if (q.trim() && !r.artists.length && !r.albums.length && !r.tracks.length) {
      const q2 = swapLayout(q), r2 = searchRaw(q2);
      if (r2.artists.length || r2.albums.length || r2.tracks.length) { r = r2; fixed = q2; }
    }
    return { ...r, fixed };
  }

  const sanitize = v => String(v ?? '').replace(/[\/\\:*?"<>|]/g, '_').replace(/[. ]+$/, '');
  function fillTpl(tpl, f) {
    let out = tpl.replace(/\[([^\]]*)\]/g, (m, inner) => [...inner.matchAll(/\{(\w+)(?::[^}]*)?\}/g)].every(x => f[x[1]]) ? inner : '');
    return out.replace(/\{(\w+)(?::([^}]*))?\}/g, (m, k, mod) => {
      let v = f[k]; if (k === 'albumartist' && !v) v = f.artist;
      v = v == null ? '' : (k === 'ext' ? v : sanitize(v));
      if (mod === '02') v = String(v).padStart(2, '0');
      if (mod === '1-') v = v ? v + '-' : '';
      return v;
    });
  }
  const GC = { artist: '#5E9BFF', albumartist: '#8FB4FF', album: '#A08BFF', year: '#FFB547', disc: '#FF8FB1', track: '#35D3FF', title: '#2FD39A', genre: '#FF9F5A', skip: '#FF5C70' };
  const GL = { artist: 'исполнитель', albumartist: 'исп. альбома', album: 'альбом', year: 'год', disc: 'диск', track: '№', title: 'название', genre: 'жанр', skip: 'пропуск' };
  function compile(p) { try { return new RegExp(p.replace(/\(\?P</g, '(?<'), 'd'); } catch (e) { return e; } }
  function tokens(p) { return p.split(/(\(\?P<\w+>)/).filter(Boolean).map(t => { const m = t.match(/^\(\?P<(\w+)>$/); return { t, c: m ? (GC[m[1]] || 'var(--accent2)') : 'var(--text)', w: m ? '600' : '400' }; }); }
  function segments(path, m) {
    const g = m.indices && m.indices.groups ? Object.entries(m.indices.groups).filter(([, v]) => v).sort((a, b) => a[1][0] - b[1][0]) : [];
    const out = []; let i = 0;
    g.forEach(([k, [s, e]]) => { if (s > i) out.push({ t: path.slice(i, s), c: 'var(--text3)' }); out.push({ t: path.slice(s, e), c: GC[k] || 'var(--text)' }); i = e; });
    if (i < path.length) out.push({ t: path.slice(i), c: 'var(--text3)' });
    return out;
  }

  window.PIPU = { H, clamp, fmt, plural, ART, ALB, TR, ALL, ACT, MOOD, waveBatch, search, swapLayout, fillTpl, sanitize, compile, tokens, segments, GC, GL };
})();