import { S } from './state.js';
import { esc, formatDur, toast } from './utils.js';
import { api, coverUrl, itunesSearch, itunesLookupAlbum, itunesLookupArtistSongs, itunesLookupArtistAlbums, itunesTopCharts, itunesTopSongs } from './api.js';
// Circular imports — safe (only used inside function bodies)
import { playQueue, dlSongLocal, playPreview } from './player.js';
import { showCtxMenu, openEditPlModal, openDlModal, closeSidebar, switchNavMode } from './ui.js';
import { closeNowPlaying, closeNpMenu } from './nowplaying.js';
import { makeCard, makeAlbumCard, makeSongItem, makeGlobalTrackItem, mkSection } from './components.js';
import { fetchRomajiIndex } from './api.js';
import { loadSpotifyImporter } from './spotify.js';

// ─── NAVIGATION HISTORY ───
export function _navSave() {
  try { sessionStorage.setItem('ns_nav', JSON.stringify({stack: S._navStack, cursor: S._navCursor})); } catch {}
}

export function _navLoad() {
  try {
    const s = JSON.parse(sessionStorage.getItem('ns_nav') || 'null');
    if(s && Array.isArray(s.stack) && s.stack.length) {
      S._navStack = s.stack;
      S._navCursor = s.cursor;
      return true;
    }
  } catch {}
  return false;
}

export function navigate(page, data=null) {
  document.querySelectorAll('.page').forEach(p => p.classList.remove('active'));
  document.querySelectorAll('.nav-item,.bnav-item').forEach(n => n.classList.remove('active','active-blue'));
  const cls = ['discover','new-releases','recommendations','spotify-importer'].includes(page) ? 'active-blue' : 'active';
  document.querySelectorAll(`[data-page="${page}"]`).forEach(el => el.classList.add(cls));
  const pageEl = document.getElementById(`page-${page}`);
  if(pageEl) { pageEl.classList.add('active'); document.getElementById('main-content').scrollTop = 0; }
  closeSidebar();
  if(['discover','new-releases','recommendations','random','spotify-importer'].includes(page)) switchNavMode('discover');
  else if(['home','artists','albums','starred','playlists'].includes(page)) switchNavMode('library');
  // ABS pages don't switch the bottom nav mode (they have their own sidebar section)

  if(page==='home')    loadHomeData();
  if(page==='artists' && !document.getElementById('artists-grid').children.length) loadArtists();
  if(page==='albums'  && !document.getElementById('albums-grid').children.length)  loadAlbums();
  if(page==='starred')       loadStarred();
  if(page==='random')        loadRandom();
  if(page==='artist-detail'      && data) loadArtistDetail(data);
  if(page==='artist-all-songs'   && data) loadArtistAllSongs(data);
  if(page==='album-detail'       && data) loadAlbumDetail(data);
  if(page==='itunes-album-detail'&& data) loadItunesAlbumDetail(data);
  if(page==='new-releases')  loadNewReleases();
  if(page==='playlists')     loadPlaylists();
  if(page==='playlist-detail' && data) loadPlaylistDetail(data);
  if(page==='recommendations')  loadRecommendations();
  if(page==='spotify-importer') loadSpotifyImporter();
  if(page==='audiobooks') {
    import('./abs.js').then(m => {
      if (S.abs.currentLibraryId) m.loadAbsBooks(S.abs.currentLibraryId);
    });
  }
  if(page==='abs-book-detail' && data) {
    import('./abs.js').then(m => m.loadAbsBookDetail(data.id));
  }

  if(!S._navJumping) {
    S._navStack = S._navStack.slice(0, S._navCursor + 1);
    const safe = data ? JSON.parse(JSON.stringify(data)) : null;
    const last = S._navStack[S._navCursor];
    if(!last || last.page !== page || JSON.stringify(last.data) !== JSON.stringify(safe)) {
      S._navStack.push({ page, data: safe });
    }
    S._navCursor = S._navStack.length - 1;
    _navSave();
    try { history.pushState({ nsIdx: S._navCursor }, '', ''); } catch {}
  }
}

export function _navGoBack() {
  if(document.getElementById('np-sheet')?.classList.contains('open')) { closeNpMenu(); return; }
  if(S.npOpen) { closeNowPlaying(); return; }
  if(S._navCursor > 0) {
    S._navCursor--;
    const entry = S._navStack[S._navCursor];
    _navSave();
    S._navJumping = true;
    navigate(entry.page, entry.data);
    S._navJumping = false;
  }
  try { history.pushState({ nsIdx: S._navCursor }, '', ''); } catch {}
}

// ─── ARTIST IMAGE ───
export async function getArtistImage(artistId) {
  if(S.artistImgCache[artistId] !== undefined) return S.artistImgCache[artistId];
  try {
    const r = await api('getArtistInfo2', `&id=${artistId}&count=0`);
    const info = r.artistInfo2 || {};
    const img = info.largeImageUrl || info.mediumImageUrl || info.smallImageUrl || null;
    const isBlank = img && (img.includes('2a96cbd8b46e442fc41c2b86b821562f') || img.endsWith('/noimage/'));
    S.artistImgCache[artistId] = isBlank ? null : img;
    return S.artistImgCache[artistId];
  } catch { S.artistImgCache[artistId] = null; return null; }
}

// ─── HOME ───
export async function loadHomeData() {
  const hour = new Date().getHours();
  const greeting = hour < 12 ? 'Guten Morgen' : hour < 18 ? 'Guten Tag' : 'Guten Abend';
  const name = S.cfg.user ? `, ${S.cfg.user}` : '';
  const el = document.getElementById('home-greeting');
  if (el) el.textContent = `${greeting}${name} 👋`;

  loadHeroCard();
  loadGenreSection();
  loadAlbumRow('home-recent',   'getAlbumList2', '&type=recent&size=20');
  loadAlbumRow('home-random',   'getAlbumList2', '&type=random&size=20');
  loadAlbumRow('home-newest',   'getAlbumList2', '&type=newest&size=20');
  loadAlbumRow('home-frequent', 'getAlbumList2', '&type=frequent&size=20');
}

async function loadHeroCard() {
  const el = document.getElementById('home-hero');
  if (!el) return;
  try {
    // Combine recent + frequent into a pool and pick one randomly.
    // This gives new users (no play history) recent albums, and returning users a mix.
    const [freqRes, recRes] = await Promise.allSettled([
      api('getAlbumList2', '&type=frequent&size=5'),
      api('getAlbumList2', '&type=recent&size=5'),
    ]);
    const freqList = freqRes.status === 'fulfilled' ? (freqRes.value.albumList2?.album || []) : [];
    const recList  = recRes.status  === 'fulfilled' ? (recRes.value.albumList2?.album  || []) : [];
    // Deduplicate by id, prefer frequent (weighted taste signal), pad with recent
    const seen = new Set();
    const pool = [...freqList, ...recList].filter(a => a.id && !seen.has(a.id) && seen.add(a.id));
    const album = pool.length ? pool[Math.floor(Math.random() * Math.min(5, pool.length))] : null;
    if (!album) return;
    const bgUrl    = coverUrl(album.coverArt, 1024);
    const thumbUrl = coverUrl(album.coverArt, 512);
    el.innerHTML = `
      ${bgUrl ? `<img class="home-hero-bg" src="${bgUrl}" alt="">` : ''}
      <div class="home-hero-overlay">
        ${thumbUrl ? `<img class="home-hero-cover" src="${thumbUrl}" alt="${esc(album.name)}">` : ''}
        <div class="home-hero-info">
          <div class="home-hero-label">Meistgespielt</div>
          <div class="home-hero-title">${esc(album.name)}</div>
          <div class="home-hero-artist">${esc(album.artist || '')}</div>
        </div>
        <button class="home-hero-play" title="Abspielen">
          <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><polygon points="5 3 19 12 5 21 5 3"/></svg>
        </button>
      </div>`;
    el.querySelector('.home-hero-cover')?.addEventListener('click', () => navigate('album-detail', album));
    el.querySelector('.home-hero-artist').onclick = () => navigate('album-detail', album);
    el.querySelector('.home-hero-play').onclick = () => quickPlayAlbum(album);
    el.classList.add('loaded');
  } catch { /* hero is optional — silent fail */ }
}

async function loadGenreSection() {
  const el = document.getElementById('home-genres');
  if (!el) return;
  try {
    const r = await api('getGenres');
    const genres = (r.genres?.genre || [])
      .filter(g => (g.songCount || 0) > 0)
      .sort((a, b) => (b.songCount || 0) - (a.songCount || 0));
    el.innerHTML = '';
    genres.forEach(g => {
      const chip = document.createElement('button');
      chip.className = 'genre-chip';
      chip.textContent = g.value;
      chip.title = `${g.songCount} Titel`;
      chip.onclick = () => playGenre(g.value);
      el.appendChild(chip);
    });
  } catch { el.style.display = 'none'; }
}

async function playGenre(genre) {
  try {
    const r = await api('getSongsByGenre', `&genre=${encodeURIComponent(genre)}&count=200`);
    const songs = r.songsByGenre?.song || [];
    if (!songs.length) return;
    const shuffled = [...songs].sort(() => Math.random() - 0.5);
    playQueue(shuffled, 0);
    navigate('now-playing');
  } catch {}
}

export async function loadAlbumRow(id, method, extra) {
  const c = document.getElementById(id);
  if(!c) return;
  c.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api(method, extra);
    c.innerHTML = '';
    (r.albumList2?.album || []).forEach(a => c.appendChild(makeAlbumCard(a)));
  } catch(e) { c.innerHTML = `<div style="color:var(--text3);font-size:13px;padding:16px">${e.message}</div>`; }
}

// ─── ARTISTS ───
export async function loadArtists() {
  const g = document.getElementById('artists-grid');
  g.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getArtists');
    const all = (r.artists?.index || []).flatMap(i => i.artist || []);
    g.innerHTML = '';
    all.forEach(a => {
      const c = makeCard(a.name, a.albumCount+' Alben', null, '🎤');
      c.classList.add('artist-card');
      c.onclick = () => navigate('artist-detail', a);
      g.appendChild(c);
      getArtistImage(a.id).then(imgUrl => {
        if(!imgUrl) return;
        const artEl = c.querySelector('.card-art');
        if(!artEl) return;
        const overlay = artEl.querySelector('.play-overlay');
        const img = document.createElement('img');
        img.src = imgUrl; img.loading = 'lazy'; img.style.cssText = 'width:100%;height:100%;object-fit:cover;transition:transform .4s';
        artEl.innerHTML = ''; artEl.appendChild(img); if(overlay) artEl.appendChild(overlay);
        c.addEventListener('mouseenter', () => img.style.transform = 'scale(1.05)');
        c.addEventListener('mouseleave', () => img.style.transform = 'scale(1)');
      });
    });
  } catch(e) { g.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── ALBUMS ───
let _albumSort = 'alphabeticalByName';

export async function loadAlbums(type = _albumSort) {
  _albumSort = type;
  document.querySelectorAll('#albums-sort-chips .sort-chip').forEach(c =>
    c.classList.toggle('active', c.dataset.sort === type));
  const g = document.getElementById('albums-grid');
  g.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getAlbumList2', `&type=${type}&size=500`);
    g.innerHTML = '';
    (r.albumList2?.album || []).forEach(a => g.appendChild(makeAlbumCard(a)));
  } catch(e) { g.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── ARTIST DETAIL ───
export async function loadArtistDetail(artist) {
  document.getElementById('artist-detail-name').textContent = artist.name;
  document.getElementById('artist-back-btn').onclick = () => _navGoBack();

  const hero   = document.getElementById('artist-detail-hero');
  const bioEl  = document.getElementById('artist-bio-section');
  const simEl  = document.getElementById('artist-similar-section');
  const tsEl   = document.getElementById('artist-topsongs-section');
  const albEl  = document.getElementById('artist-albums-section');
  hero.style.background = 'linear-gradient(135deg, var(--surface2), var(--surface))';
  const overlay = hero.querySelector('.artist-hero-overlay');
  if(overlay) overlay.style.background = '';
  [bioEl, simEl, tsEl, albEl].forEach(el => { if(el) el.innerHTML = ''; });
  if(albEl) albEl.innerHTML = '<div class="spinner"></div>';

  const hasND       = !!artist.id;
  const knownItunes = artist.itunesArtistId || null;

  // Phase 1 — parallel
  const [imgRes, albumRes, infoRes, topRes, iArtistRes] = await Promise.allSettled([
    hasND ? getArtistImage(artist.id)                                          : Promise.resolve(null),
    hasND ? api('getArtist',    `&id=${artist.id}`)                            : Promise.resolve(null),
    hasND ? api('getArtistInfo2',`&id=${artist.id}&count=8`)                   : Promise.resolve(null),
    hasND ? api('getTopSongs',  `&artist=${encodeURIComponent(artist.name)}&count=10`) : Promise.resolve(null),
    knownItunes
      ? Promise.resolve([{ artistId: knownItunes }])
      : itunesSearch(artist.name, 'musicArtist', 1),
  ]);

  const itunesArtistId = knownItunes
    ?? (iArtistRes.status === 'fulfilled' ? (iArtistRes.value[0]?.artistId ?? null) : null);

  // Phase 2 — iTunes data (needs artist ID)
  const [iAlbumsRes, iTracksRes] = itunesArtistId
    ? await Promise.allSettled([
        itunesLookupArtistAlbums(itunesArtistId),
        itunesLookupArtistSongs(itunesArtistId, 15),
      ])
    : [{ status: 'rejected' }, { status: 'rejected' }];

  // ── Hero ──
  const img = imgRes.status === 'fulfilled' ? imgRes.value : null;
  if(img) {
    hero.style.background = `url('${img}') center/cover no-repeat`;
    if(overlay) overlay.style.background = 'linear-gradient(to right,rgba(7,7,15,.95) 0%,rgba(7,7,15,.35) 55%,rgba(7,7,15,.75) 100%)';
  }

  // ── Bio ──
  const info = infoRes.status === 'fulfilled' ? infoRes.value?.artistInfo2 : null;
  if(info?.biography && bioEl) {
    const bio = info.biography.replace(/<a [^>]+>/g,'').replace(/<\/a>/g,'').replace(/<[^>]+>/g,'').trim();
    const short = bio.length > 400 ? bio.slice(0,400)+'…' : bio;
    if(short) {
      window._artistBioFull = bio;
      bioEl.innerHTML = `<div class="section-title" style="margin-bottom:10px">Über</div>
        <div class="artist-bio" id="artist-bio-text">${esc(short)}${bio.length > 400
          ? ` <button onclick="expandArtistBio()" style="background:none;border:none;cursor:pointer;color:var(--accent);font-size:12px;padding:0;margin-left:6px">Mehr lesen</button>`
          : ''}</div>`;
    }
  }

  // ── Similar artists ──
  const similar = info?.similarArtist || [];
  if(similar.length && simEl) {
    simEl.innerHTML = `<div class="section-title" style="margin-bottom:10px">Ähnliche Künstler</div>
      <div class="similar-chips">${similar.map(a =>
        `<span class="similar-chip" onclick="navigate('artist-detail',{id:'${esc(a.id||a.name)}',name:'${esc(a.name)}'})">
          ${esc(a.name)}</span>`).join('')}</div>`;
  }

  // ── Top Songs ──
  const ndAlbums    = albumRes.status === 'fulfilled' ? (albumRes.value?.artist?.album || []) : [];
  const topSongs    = topRes.status   === 'fulfilled' ? (topRes.value?.topSongs?.song  || []) : [];
  const iTracks     = iTracksRes.status === 'fulfilled' ? (iTracksRes.value || []).filter(t => t.wrapperType === 'track') : [];
  const iAlbums     = iAlbumsRes.status === 'fulfilled' ? (iAlbumsRes.value || []) : [];

  if((topSongs.length || iTracks.length) && tsEl) {
    tsEl.innerHTML = '';

    if(topSongs.length) {
      const h = document.createElement('div');
      h.className = 'section-title'; h.style.marginBottom = '10px'; h.textContent = 'Top Songs';
      tsEl.appendChild(h);
      const list = document.createElement('div'); list.style.marginBottom = '8px';
      topSongs.forEach((s, i) => {
        const cv = coverUrl(s.coverArt, 128);
        const row = document.createElement('div'); row.className = 'topsong-item';
        row.innerHTML = `<div class="topsong-num">${i+1}</div>
          <div class="topsong-thumb">${cv ? `<img src="${cv}" loading="lazy">` : '<div style="width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:18px">🎵</div>'}</div>
          <div><div class="topsong-title">${esc(s.title)}</div><div style="font-size:11px;color:var(--text2)">${esc(s.album||'')}</div></div>
          <div class="topsong-plays">${s.playCount ? s.playCount.toLocaleString() : '—'}</div>`;
        row.onclick = () => playQueue(topSongs, i);
        row.addEventListener('contextmenu', e => { e.preventDefault(); showCtxMenu(e, s, topSongs, i); });
        list.appendChild(row);
      });
      tsEl.appendChild(list);
      if(ndAlbums.length) {
        const total = ndAlbums.reduce((n, a) => n + (a.songCount || 0), 0);
        const btn = document.createElement('button');
        btn.className = 'btn-outline'; btn.style.cssText = 'font-size:12px;padding:7px 14px;margin-bottom:16px;margin-top:4px';
        btn.textContent = `Alle ${total} Songs in Library`;
        btn.onclick = () => navigate('artist-all-songs', { albums: ndAlbums, artist });
        tsEl.appendChild(btn);
      }
    }

    if(iTracks.length) {
      const heading = topSongs.length ? 'Weltweit populär (iTunes)' : 'Populäre Titel';
      const sec = document.createElement('div');
      sec.innerHTML = `<div class="section-title" style="margin-top:${topSongs.length?'8px':'0'};margin-bottom:10px">${heading}</div>`;
      const list = document.createElement('div'); list.className = 'song-list'; list.style.marginBottom = '20px';
      iTracks.forEach((t, i) => list.appendChild(makeGlobalTrackItem(t, i, iTracks)));
      sec.appendChild(list); tsEl.appendChild(sec);
    }
  }

  // ── Action bar ──
  const actionBar = document.getElementById('artist-action-bar');
  if(actionBar) {
    actionBar.innerHTML = '';
    if(topSongs.length || ndAlbums.length) {
      const playTopBtn = document.createElement('button');
      playTopBtn.className = 'artist-action-btn';
      playTopBtn.innerHTML = `<svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor"><polygon points="5 3 19 12 5 21 5 3"/></svg> Top Songs`;
      playTopBtn.onclick = () => topSongs.length ? playQueue(topSongs, 0) : quickPlayArtist(artist);

      const shuffleBtn = document.createElement('button');
      shuffleBtn.className = 'artist-action-btn';
      shuffleBtn.innerHTML = `<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="16 3 21 3 21 8"/><line x1="4" y1="20" x2="21" y2="3"/><polyline points="21 16 21 21 16 21"/><line x1="15" y1="15" x2="21" y2="21"/></svg> Shuffle`;
      shuffleBtn.onclick = async () => {
        S.shuffle = true;
        localStorage.setItem('ns_shuffle', '1');
        import('./player.js').then(({ _applyShuffleRepeat }) => _applyShuffleRepeat());
        await quickPlayArtist(artist);
      };

      actionBar.appendChild(playTopBtn);
      actionBar.appendChild(shuffleBtn);
    }
  }

  // ── Albums ──
  if(albEl) { albEl.innerHTML = ''; _renderArtistAlbums(albEl, ndAlbums, iAlbums, artist); }
}

function _normAlbum(s) {
  return (s || '').toLowerCase().replace(/[^a-z0-9\s]/g, ' ').replace(/\s+/g, ' ').trim();
}

function _renderArtistAlbums(el, ndAlbums, iAlbums, artist) {
  const downloaded = [], partial = [], notDl = [];
  const usedNdIds = new Set();

  for(const ia of iAlbums) {
    const iName  = _normAlbum(ia.collectionName);
    const iCount = ia.trackCount || 0;
    const match  = ndAlbums.find(a => {
      const n = _normAlbum(a.name);
      return n === iName || (n.length > 3 && iName.startsWith(n)) || (iName.length > 3 && n.startsWith(iName));
    });
    if(!match) {
      notDl.push(ia);
    } else if(iCount > 0 && match.songCount >= iCount) {
      downloaded.push({ nd: match, itunes: ia }); usedNdIds.add(match.id);
    } else {
      partial.push({ nd: match, itunes: ia, have: match.songCount || 0, total: iCount }); usedNdIds.add(match.id);
    }
  }
  // Navidrome albums with no iTunes match go to downloaded
  for(const na of ndAlbums) {
    if(!usedNdIds.has(na.id)) downloaded.push({ nd: na, itunes: null });
  }

  downloaded.sort((a, b) => (b.nd.year||0) - (a.nd.year||0));
  partial.sort((a, b) => (b.nd.year||0) - (a.nd.year||0));
  notDl.sort((a, b) => new Date(b.releaseDate||0) - new Date(a.releaseDate||0));

  function addGrid(title, count) {
    const h = document.createElement('div');
    h.className = 'section-title';
    h.style.cssText = 'margin-bottom:12px;margin-top:20px;display:flex;align-items:center;gap:8px';
    h.innerHTML = `${title}<span class="section-count">${count}</span>`;
    el.appendChild(h);
    const g = document.createElement('div'); g.className = 'grid grid-4'; el.appendChild(g);
    return g;
  }

  if(downloaded.length) {
    const g = addGrid('In Library', downloaded.length);
    downloaded.forEach(({ nd, itunes }) => g.appendChild(makeAlbumCard({ ...nd, _fromArtist: artist })));
  }

  if(partial.length) {
    const g = addGrid('Unvollständig', partial.length);
    partial.forEach(({ nd, itunes, have, total }) => {
      const art = itunes?.artworkUrl100?.replace('100x100','512x512') || coverUrl(nd.coverArt, 512);
      const c = makeCard(nd.name, `${have} / ${total} Tracks`, art, '💿');
      c.querySelector('.card-art').onclick = (e) => { e.stopPropagation(); quickPlayAlbum(nd); };
      c.querySelector('.card-info').onclick = () => itunes ? navigate('itunes-album-detail', itunes) : navigate('album-detail', { ...nd, _fromArtist: artist });
      const artEl = c.querySelector('.card-art');
      const badge = document.createElement('div');
      badge.className = 'album-partial-badge'; badge.textContent = `${have}/${total}`;
      artEl.appendChild(badge);
      if(itunes) {
        const btn = document.createElement('button');
        btn.className = 'card-dl-btn'; btn.title = 'Fehlende Tracks laden';
        btn.innerHTML = `<svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>`;
        btn.onclick = (e) => { e.stopPropagation(); openDlModal({ artistName: artist.name, trackName: nd.name, collectionName: nd.name, artworkUrl100: itunes.artworkUrl100||'', isAlbum: true, itunesData: itunes, collectionId: itunes.collectionId }); };
        artEl.appendChild(btn);
      }
      g.appendChild(c);
    });
  }

  if(notDl.length) {
    const g = addGrid('Noch nicht heruntergeladen', notDl.length);
    notDl.forEach(ia => {
      const art = ia.artworkUrl100?.replace('100x100','300x300');
      const c = makeCard(ia.collectionName, ia.releaseDate?.slice(0,4)||'', art, '💿');
      c.onclick = () => navigate('itunes-album-detail', ia);
      const artEl = c.querySelector('.card-art');
      const btn = document.createElement('button');
      btn.className = 'card-dl-btn'; btn.title = 'Album laden';
      btn.innerHTML = `<svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>`;
      btn.onclick = (e) => { e.stopPropagation(); openDlModal({ artistName: ia.artistName, trackName: ia.collectionName, collectionName: ia.collectionName, artworkUrl100: ia.artworkUrl100||'', isAlbum: true, itunesData: ia, collectionId: ia.collectionId }); };
      artEl.appendChild(btn);
      g.appendChild(c);
    });
  }

  // No iTunes data at all — show Navidrome albums plainly
  if(!downloaded.length && !partial.length && !notDl.length && ndAlbums.length) {
    const g = addGrid('Alben', ndAlbums.length);
    ndAlbums.forEach(a => g.appendChild(makeAlbumCard({ ...a, _fromArtist: artist })));
  }
}

export async function loadArtistAllSongs({ albums, artist }) {
  document.getElementById('artist-songs-title').textContent = `Alle Songs · ${artist.name}`;
  document.getElementById('artist-songs-back-btn').onclick = () => _navGoBack();
  const el = document.getElementById('artist-songs-list');
  el.innerHTML = '<div class="spinner"></div>';
  const results = await Promise.allSettled(albums.map(a => api('getAlbum', `&id=${a.id}`)));
  el.innerHTML = '';
  const allSongs = results
    .filter(r => r.status === 'fulfilled')
    .flatMap(r => { const alb = r.value?.album; return (alb?.song || []).map(s => ({ ...s, _alb: alb })); })
    .sort((a, b) => {
      if(a._alb?.year !== b._alb?.year) return (b._alb?.year||0) - (a._alb?.year||0);
      if(a._alb?.id !== b._alb?.id) return (a._alb?.name||'').localeCompare(b._alb?.name||'');
      return (a.trackNumber||0) - (b.trackNumber||0);
    });
  let curId = '';
  allSongs.forEach((s, i) => {
    if(s._alb?.id !== curId) {
      curId = s._alb?.id || '';
      const h = document.createElement('div');
      h.style.cssText = 'font-size:12px;font-weight:700;color:var(--text2);padding:12px 0 4px;border-top:1px solid var(--border);margin-top:4px';
      h.textContent = s._alb?.name || '';
      el.appendChild(h);
    }
    const cv = coverUrl(s.coverArt, 60);
    const row = document.createElement('div'); row.className = 'topsong-item';
    row.innerHTML = `<div class="topsong-num">${s.trackNumber||''}</div>
      <div class="topsong-thumb">${cv?`<img src="${cv}" loading="lazy">`:'<div style="width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:16px">🎵</div>'}</div>
      <div><div class="topsong-title">${esc(s.title)}</div></div>
      <div class="topsong-plays">${s.playCount?s.playCount.toLocaleString():''}</div>`;
    row.onclick = () => playQueue(allSongs, i);
    row.addEventListener('contextmenu', e => { e.preventDefault(); showCtxMenu(e, s, allSongs, i); });
    el.appendChild(row);
  });
}

export async function loadItunesAlbumDetail(album) {
  document.getElementById('itunes-album-back-btn').onclick = () => _navGoBack();
  document.getElementById('itunes-album-detail-name').textContent = album.collectionName || '—';
  document.getElementById('itunes-album-detail-artist').textContent = album.artistName || '';
  const cw = document.getElementById('itunes-album-cover-wrap');
  const art = (album.artworkUrl100 || '').replace('100x100bb','600x600bb').replace('100x100','600x600');
  cw.innerHTML = art ? `<img src="${art}" onerror="this.parentNode.innerHTML='<div class=\\'no-art\\'>💿</div>'">` : '<div class="no-art">💿</div>';
  const dlBtn = document.getElementById('itunes-album-dl-btn');
  dlBtn.onclick = () => openDlModal({ artistName: album.artistName, trackName: album.collectionName, collectionName: album.collectionName, artworkUrl100: album.artworkUrl100||'', isAlbum: true, itunesData: album, collectionId: album.collectionId });
  const sl = document.getElementById('itunes-album-songs');
  sl.innerHTML = '<div class="spinner"></div>';
  try {
    const tracks = await itunesLookupAlbum(album.collectionId);
    const year = album.releaseDate ? new Date(album.releaseDate).getFullYear() : '';
    document.getElementById('itunes-album-detail-stats').textContent = `${tracks.length} Titel${year ? ' · ' + year : ''}`;
    sl.innerHTML = '';
    if(!tracks.length) { sl.innerHTML = '<div style="padding:16px;color:var(--text3)">Keine Tracks gefunden</div>'; return; }
    tracks.forEach((t, i) => sl.appendChild(makeGlobalTrackItem(t, i, tracks)));
  } catch(e) { sl.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── ALBUM DETAIL ───
export async function loadAlbumDetail(album) {
  document.getElementById('album-back-btn').onclick = () =>
    album._fromArtist ? navigate('artist-detail', album._fromArtist) : navigate('albums');
  document.getElementById('album-detail-name').textContent = album.name;
  const artistEl = document.getElementById('album-detail-artist');
  const albumArtistParts = (album.artist || '').split(/\s*(?:\/|•)\s*/).filter(Boolean);
  artistEl.innerHTML = albumArtistParts.map((name, i) => {
    const aid = i === 0 ? (album.artistId || '') : '';
    return `<span class="song-link" onclick="event.stopPropagation();s_goArtist(event,'${esc(name)}','${esc(aid)}')">${esc(name)}</span>`;
  }).join('<span style="color:var(--text3)"> • </span>') || '';
  const cw = document.getElementById('album-cover-wrap');
  const cv = coverUrl(album.coverArt, 512);
  cw.innerHTML = cv ? `<img src="${cv}" onerror="this.parentNode.innerHTML='<div class=\\'no-art\\'>💿</div>'">` : '<div class="no-art">💿</div>';
  const sl = document.getElementById('album-songs');
  sl.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getAlbum', `&id=${album.id}`);
    const songs = r.album?.song || [];
    const totalMin = Math.round(songs.reduce((s,t) => s+(t.duration||0), 0) / 60);
    document.getElementById('album-detail-stats').textContent = `${songs.length} Titel · ${r.album.year||''} · ${totalMin} Min.`;
    document.getElementById('btn-play-album').onclick = () => playQueue(songs, 0);
    document.getElementById('btn-dl-album').onclick = () => {
      songs.forEach((s,i) => setTimeout(() => dlSongLocal(s), i*400));
      toast(`⬇ ${songs.length} Titel Download gestartet`);
    };
    sl.innerHTML = '';
    songs.forEach((s,i) => sl.appendChild(makeSongItem(s, i, songs, { noAlbumLink: true })));
  } catch(e) { sl.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── PLAYLISTS ───
export async function loadPlaylists() {
  const g = document.getElementById('playlists-grid');
  g.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getPlaylists');
    const lists = r.playlists?.playlist || [];
    g.innerHTML = '';
    if(!lists.length) { g.innerHTML = '<div class="empty-state"><div class="icon">🎶</div><p>Keine Playlists vorhanden</p></div>'; return; }
    lists.forEach(pl => {
      const cv = coverUrl(pl.coverArt, 512);
      const c = makeCard(pl.name, pl.songCount+' Titel', cv, '🎶');
      c.querySelector('.card-art').onclick = (e) => { e.stopPropagation(); quickPlayPlaylist(pl); };
      c.querySelector('.card-info').onclick = () => navigate('playlist-detail', pl);
      g.appendChild(c);
    });
  } catch(e) { g.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

export async function quickPlayPlaylist(pl) {
  try { const r = await api('getPlaylist', `&id=${pl.id}`); playQueue(r.playlist?.entry || [], 0); }
  catch(e) { toast('Fehler: ' + e.message); }
}

export async function quickPlayArtist(a) {
  try {
    toast('Lade Songs…');
    const r = await api('getArtist', `&id=${a.id}`);
    const albums = r.artist?.album || [];
    if (!albums.length) { toast('Keine Alben gefunden'); return; }
    const results = await Promise.all(albums.map(al => api('getAlbum', `&id=${al.id}`)));
    const songs = results.flatMap(ar => ar.album?.song || []);
    if (songs.length) playQueue(songs, 0);
    else toast('Keine Songs gefunden');
  } catch(e) { toast('Fehler: ' + e.message); }
}

export async function loadPlaylistDetail(pl) {
  S._currentPlaylist = {...pl};
  document.getElementById('playlist-detail-name').textContent = pl.name;
  const cw = document.getElementById('playlist-cover');
  const cv = coverUrl(pl.coverArt, 512);
  cw.innerHTML = cv ? `<img src="${cv}" onerror="this.parentNode.innerHTML='<div class=\\'no-art\\'>🎶</div>'">` : '<div class="no-art">🎶</div>';
  document.getElementById('btn-edit-playlist').onclick = () => openEditPlModal(S._currentPlaylist);
  const sl = document.getElementById('playlist-songs');
  sl.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getPlaylist', `&id=${pl.id}`);
    const full = r.playlist || {};
    S._currentPlaylist = {...pl, ...full, id: pl.id};
    const songs = full.entry || [];
    const totalMin = Math.round(songs.reduce((s,t) => s+(t.duration||0), 0) / 60);
    document.getElementById('playlist-detail-stats').textContent = `${songs.length} Titel · ${totalMin} Min.`;
    const descEl = document.getElementById('playlist-detail-desc');
    if(descEl) { descEl.textContent = full.comment||''; descEl.style.display = full.comment ? '' : 'none'; }
    document.getElementById('btn-play-playlist').onclick = () => playQueue(songs, 0);
    document.getElementById('btn-shuffle-playlist').onclick = () => {
      const shuffled = [...songs].sort(() => Math.random()-.5);
      playQueue(shuffled, 0);
    };
    sl.innerHTML = '';
    const plSearch = document.getElementById('playlist-search');
    if (plSearch) plSearch.value = '';
    songs.forEach((s,i) => sl.appendChild(makeSongItem(s, i, songs, { noArtistLink: true, noAlbumLink: true })));
    _setupReorderMode(sl, songs, S._currentPlaylist);
  } catch(e) { sl.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

export function filterPlaylist(val) {
  const q = val.trim().toLowerCase();
  document.querySelectorAll('#playlist-songs .song-item').forEach(item => {
    const title  = (item.querySelector('.song-title')?.textContent  || '').toLowerCase();
    const artist = (item.querySelector('.song-artist')?.textContent || '').toLowerCase();
    item.style.display = (!q || title.includes(q) || artist.includes(q)) ? '' : 'none';
  });
}

// ─── PLAYLIST REORDER MODE ───────────────────────────────────────────────
let _reorderCtx = null;

function _setupReorderMode(container, songs, pl) {
  // Exit any previous reorder mode silently when loading a new playlist.
  if (_reorderCtx) _exitReorderMode(false);
  _reorderCtx = { container, songs, pl };
  const btn = document.getElementById('btn-reorder-playlist');
  if (btn) btn.onclick = plReorderEnter;
  const bar = document.getElementById('pl-reorder-bar');
  if (bar) bar.style.display = 'none';
}

export function plReorderEnter() {
  if (!_reorderCtx || _reorderCtx.active) return;
  _reorderCtx.active = true;
  const { container, songs } = _reorderCtx;
  container.classList.add('pl-draggable');
  // Block context-menu (long-press) on all items while reordering.
  container.addEventListener('contextmenu', _blockCtxMenu, true);

  let dragSrc     = null;
  let touchDragSrc = null;

  Array.from(container.children).forEach((item, i) => {
    const handle = document.createElement('div');
    handle.className = 'pl-drag-handle';
    handle.innerHTML = '<svg width="10" height="14" viewBox="0 0 10 14" fill="currentColor"><circle cx="3" cy="2" r="1.3"/><circle cx="7" cy="2" r="1.3"/><circle cx="3" cy="7" r="1.3"/><circle cx="7" cy="7" r="1.3"/><circle cx="3" cy="12" r="1.3"/><circle cx="7" cy="12" r="1.3"/></svg>';
    item.insertBefore(handle, item.firstChild);
    item._songRef = songs[i];

    // ── Desktop drag ──
    let fromHandle = false;
    handle.addEventListener('mousedown', () => { fromHandle = true; item.draggable = true; });
    item.addEventListener('dragstart', e => {
      if (!fromHandle) { e.preventDefault(); item.draggable = false; return; }
      fromHandle = false; dragSrc = item;
      e.dataTransfer.effectAllowed = 'move';
      e.dataTransfer.setData('text/plain', '');
      setTimeout(() => item.classList.add('dragging'), 0);
    });
    item.addEventListener('dragend', () => {
      fromHandle = false; item.draggable = false; dragSrc = null;
      item.classList.remove('dragging');
      container.querySelectorAll('.drag-over').forEach(el => el.classList.remove('drag-over'));
    });
    item.addEventListener('dragover', e => {
      e.preventDefault(); e.dataTransfer.dropEffect = 'move';
      if (item === dragSrc) return;
      container.querySelectorAll('.drag-over').forEach(el => el.classList.remove('drag-over'));
      item.classList.add('drag-over');
    });
    item.addEventListener('dragleave', e => { if (!item.contains(e.relatedTarget)) item.classList.remove('drag-over'); });
    item.addEventListener('drop', e => {
      e.preventDefault(); e.stopPropagation();
      if (!dragSrc || item === dragSrc) return;
      item.classList.remove('drag-over');
      _doReorder(container, songs, dragSrc, item);
    });

    // ── Touch drag ──
    handle.addEventListener('touchstart', e => {
      e.preventDefault(); e.stopPropagation();
      touchDragSrc = item; item.classList.add('dragging');
    }, { passive: false });
    handle.addEventListener('touchmove', e => {
      if (!touchDragSrc) return;
      e.preventDefault();
      const t = e.touches[0];
      container.querySelectorAll('.drag-over').forEach(el => el.classList.remove('drag-over'));
      const over = _itemAtPoint(container, t.clientX, t.clientY, touchDragSrc);
      if (over) over.classList.add('drag-over');
    }, { passive: false });
    handle.addEventListener('touchend', e => {
      if (!touchDragSrc) return;
      const t = e.changedTouches[0];
      touchDragSrc.classList.remove('dragging');
      container.querySelectorAll('.drag-over').forEach(el => el.classList.remove('drag-over'));
      const over = _itemAtPoint(container, t.clientX, t.clientY, touchDragSrc);
      if (over) _doReorder(container, songs, touchDragSrc, over);
      touchDragSrc = null;
    }, { passive: false });
  });

  const bar = document.getElementById('pl-reorder-bar');
  if (bar) bar.style.display = 'flex';
}

function _blockCtxMenu(e) { e.preventDefault(); e.stopPropagation(); }

function _itemAtPoint(container, x, y, exclude) {
  return (document.elementsFromPoint(x, y) || [])
    .find(el => el.classList?.contains('song-item') && el !== exclude && container.contains(el)) || null;
}

function _doReorder(container, songs, src, target) {
  const all = Array.from(container.children);
  const from = all.indexOf(src), to = all.indexOf(target);
  container.insertBefore(src, from < to ? target.nextSibling : target);
  const newOrder = Array.from(container.children).map(el => el._songRef);
  songs.splice(0, songs.length, ...newOrder);
  Array.from(container.children).forEach((el, i) => {
    const n = el.querySelector('.song-num'); if (n) n.textContent = i + 1;
  });
}

export function plReorderSave()   { _exitReorderMode(true);  }
export function plReorderCancel() { _exitReorderMode(false); }

function _exitReorderMode(save) {
  if (!_reorderCtx) return;
  const { container, songs, pl } = _reorderCtx;
  _reorderCtx.active = false;
  container.classList.remove('pl-draggable');
  container.removeEventListener('contextmenu', _blockCtxMenu, true);
  container.querySelectorAll('.pl-drag-handle').forEach(h => h.remove());
  const bar = document.getElementById('pl-reorder-bar');
  if (bar) bar.style.display = 'none';
  if (save) _savePlaylistOrder(pl, songs);
}

async function _savePlaylistOrder(pl, songs) {
  try {
    const songIds = songs.map(s => `&songId=${s.id}`).join('');
    await api('createPlaylist', `&playlistId=${pl.id}&name=${encodeURIComponent(pl.name)}${songIds}`);
    toast('✅ Reihenfolge gespeichert');
  } catch(e) { toast('Fehler beim Speichern: ' + e.message); }
}

export async function quickPlayAlbum(a) {
  try { const r = await api('getAlbum', `&id=${a.id}`); playQueue(r.album?.song || [], 0); }
  catch(e) { toast('Fehler: ' + e.message); }
}

// ─── STARRED / RANDOM ───
let _starredSort = 'newest';

export async function loadStarred(sort = _starredSort) {
  _starredSort = sort;
  document.querySelectorAll('#starred-sort-chips .sort-chip').forEach(c =>
    c.classList.toggle('active', c.dataset.sort === sort));
  const el = document.getElementById('starred-songs');
  el.innerHTML = '<div class="spinner"></div>';
  const searchEl = document.getElementById('starred-search');
  if (searchEl) searchEl.value = '';
  try {
    const r = await api('getStarred2');
    let songs = (r.starred2?.song || []).map(s => ({...s, _starred: true}));
    if      (sort === 'newest') songs.sort((a, b) => new Date(b.starred||0) - new Date(a.starred||0));
    else if (sort === 'oldest') songs.sort((a, b) => new Date(a.starred||0) - new Date(b.starred||0));
    else if (sort === 'az')     songs.sort((a, b) => (a.title||'').localeCompare(b.title||''));
    else if (sort === 'artist') songs.sort((a, b) => (a.artist||'').localeCompare(b.artist||''));
    else if (sort === 'plays')  songs.sort((a, b) => (b.playCount||0) - (a.playCount||0));
    el.innerHTML = '';
    if(!songs.length) { el.innerHTML = '<div class="empty-state"><div class="icon">⭐</div><p>Noch keine Favoriten</p></div>'; return; }
    songs.forEach((s,i) => el.appendChild(makeSongItem(s, i, songs, { noArtistLink: true, noAlbumLink: true })));
  } catch(e) { el.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

export function filterStarred(val) {
  const q = val.trim().toLowerCase();
  document.querySelectorAll('#starred-songs .song-item').forEach(item => {
    const title  = (item.querySelector('.song-title')?.textContent  || '').toLowerCase();
    const artist = (item.querySelector('.song-artist')?.textContent || '').toLowerCase();
    item.style.display = (!q || title.includes(q) || artist.includes(q)) ? '' : 'none';
  });
}

export async function loadRandom() {
  const el = document.getElementById('random-songs');
  el.innerHTML = '<div class="spinner"></div>';
  try {
    const r = await api('getRandomSongs', '&size=50');
    const songs = r.randomSongs?.song || [];
    el.innerHTML = '';
    songs.forEach((s,i) => el.appendChild(makeSongItem(s, i, songs)));
  } catch(e) { el.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── ROMAJI → HIRAGANA (lazy-loaded) ───
let _wanakana = null;
async function _romajiToHiragana(q) {
  // Only attempt conversion if query is pure ASCII (likely romaji)
  if (!/^[a-z\s'-]+$/i.test(q.trim())) return null;
  try {
    if (!_wanakana) _wanakana = await import('https://cdn.jsdelivr.net/npm/wanakana@5/esm/wanakana.js');
    const h = _wanakana.toHiragana(q.trim(), { passRomaji: false });
    // If conversion produced actual hiragana (not just the same ASCII), use it
    return /[぀-ゟ]/.test(h) ? h : null;
  } catch { return null; }
}

function _mergeUniq(a, b) {
  const seen = new Set(a.map(x => x.id));
  return [...a, ...(b || []).filter(x => !seen.has(x.id))];
}

// ─── LOCAL SEARCH ───
export function onLocalSearch(val) {
  clearTimeout(S.searchTimer);
  if(!val.trim()) { navigate('home'); return; }
  navigate('search');
  S.searchTimer = setTimeout(() => doLocalSearch(val), 350);
}

export async function doLocalSearch(q) {
  const el = document.getElementById('search-results');
  el.innerHTML = '<div class="spinner"></div>';
  try {
    const hiragana = await _romajiToHiragana(q);
    const isRomaji = /^[a-z\s'-]+$/i.test(q.trim());
    const [r, r2, romajiIdx] = await Promise.all([
      api('search3', `&query=${encodeURIComponent(q)}&songCount=30&albumCount=10&artistCount=6`),
      hiragana ? api('search3', `&query=${encodeURIComponent(hiragana)}&songCount=20&albumCount=6&artistCount=4`) : Promise.resolve(null),
      isRomaji ? fetchRomajiIndex() : Promise.resolve(null),
    ]);
    const res  = r.searchResult3  || {};
    const res2 = r2?.searchResult3 || {};
    el.innerHTML = '';
    const artists = _mergeUniq(res.artist||[], res2.artist);
    const albums  = _mergeUniq(res.album ||[], res2.album);

    // Merge Navidrome results with romaji index matches
    const qLow = q.trim().toLowerCase();
    const romajiHits = romajiIdx
      ? romajiIdx.filter(e => e.r.includes(qLow))
      : [];
    const songs = _mergeUniq(_mergeUniq(res.song||[], res2.song), romajiHits);

    if(!artists.length && !albums.length && !songs.length) {
      el.innerHTML = '<div class="empty-state"><div class="icon">🔍</div><p>Keine Ergebnisse</p></div>'; return;
    }
    if(artists.length) {
      const s = mkSection('Künstler');
      const g = document.createElement('div'); g.className = 'scroll-row';
      artists.forEach(a => {
        const c = makeCard(a.name, a.albumCount+' Alben', null, '🎤');
        c.classList.add('artist-card');
        c.onclick = () => navigate('artist-detail', a);
        g.appendChild(c);
        getArtistImage(a.id).then(img => {
          if(!img) return;
          const artEl = c.querySelector('.card-art');
          if(!artEl) return;
          artEl.innerHTML = `<img src="${img}" loading="lazy" onerror="this.parentNode.innerHTML='<div class=\\'no-art\\'>🎤</div>'">`;
        });
      });
      s.appendChild(g); el.appendChild(s);
    }
    if(albums.length) {
      const s = mkSection('Alben');
      const g = document.createElement('div'); g.className = 'scroll-row';
      albums.forEach(a => g.appendChild(makeAlbumCard(a)));
      s.appendChild(g); el.appendChild(s);
    }
    if(songs.length) {
      const sec = mkSection('Titel');
      const list = document.createElement('div'); list.className = 'song-list';
      songs.forEach((so,i) => list.appendChild(makeSongItem(so, i, songs)));
      sec.appendChild(list); el.appendChild(sec);
    }
  } catch(e) { el.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── MOBILE SEARCH ───
export function onMobileSearch(val) {
  clearTimeout(S._mobileSearchTimer);
  if(!val.trim()) { navigate('home'); return; }
  navigate('search');
  S._mobileSearchTimer = setTimeout(() => doLocalSearch(val), 300);
}

// ─── GLOBAL (ITUNES) SEARCH ───
export function onGlobalSearch(val) {
  clearTimeout(S.globalSearchTimer);
  const el = document.getElementById('global-search-results');
  if(!val.trim()) { el.innerHTML = '<div class="empty-state"><div class="icon">🔍</div><p>Gib einen Suchbegriff ein</p></div>'; return; }
  el.innerHTML = '<div class="spinner"></div>';
  S.globalSearchTimer = setTimeout(() => doGlobalSearch(val), 400);
}

export async function doGlobalSearch(q) {
  const el = document.getElementById('global-search-results');
  try {
    const [tracks, albums, artists] = await Promise.all([
      itunesSearch(q,'musicTrack',25),
      itunesSearch(q,'album',10),
      itunesSearch(q,'musicArtist',6)
    ]);
    el.innerHTML = '';

    const trackResults = tracks.filter(t => t.wrapperType === 'track');
    const albumResults = albums;

    if(artists.length) {
      const s = mkSection('Künstler');
      const row = document.createElement('div'); row.className = 'scroll-row';
      artists.forEach(a => {
        const c = makeCard(a.artistName, 'iTunes Künstler', null, '🎤');
        c.onclick = () => loadItunesArtistResults(a.artistId, a.artistName);
        row.appendChild(c);
        itunesSearch(a.artistName,'album',1).then(res => {
          if(!res[0]) return;
          const imgUrl = res[0].artworkUrl100?.replace('100x100','300x300');
          if(!imgUrl) return;
          const artEl = c.querySelector('.card-art'); if(!artEl) return;
          const img = document.createElement('img');
          img.src = imgUrl; img.loading = 'lazy'; img.style.cssText = 'width:100%;height:100%;object-fit:cover;transition:transform .4s';
          const overlay = artEl.querySelector('.play-overlay');
          artEl.innerHTML = ''; artEl.appendChild(img); if(overlay) artEl.appendChild(overlay);
          img.onerror = () => { artEl.innerHTML = '<div class="no-art">🎤</div>'; if(overlay) artEl.appendChild(overlay); };
          c.addEventListener('mouseenter', () => img.style.transform = 'scale(1.05)');
          c.addEventListener('mouseleave', () => img.style.transform = 'scale(1)');
        }).catch(() => {});
      });
      s.appendChild(row); el.appendChild(s);
    }
    if(albumResults.length) {
      const s = mkSection('Alben');
      const row = document.createElement('div'); row.className = 'scroll-row';
      albumResults.forEach(a => {
        const art = a.artworkUrl100?.replace('100x100','300x300');
        const c = makeCard(a.collectionName, a.artistName, art, '💿');
        c.querySelector('.play-btn').onclick = (e) => { e.stopPropagation(); loadItunesAlbum(a); };
        c.querySelector('.dl-btn-overlay')?.remove();
        const dlOverlay = document.createElement('button');
        dlOverlay.className = 'dl-btn-overlay';
        dlOverlay.title = 'Auf Server laden';
        dlOverlay.innerHTML = `<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>`;
        dlOverlay.onclick = (e) => { e.stopPropagation(); openDlModal({artistName:a.artistName,trackName:a.collectionName,artworkUrl100:a.artworkUrl100,collectionName:a.collectionName,isAlbum:true,itunesData:a}); };
        c.querySelector('.play-overlay').appendChild(dlOverlay);
        c.onclick = () => loadItunesAlbum(a);
        row.appendChild(c);
      });
      s.appendChild(row); el.appendChild(s);
    }
    if(trackResults.length) {
      const s = mkSection('Titel');
      const list = document.createElement('div'); list.className = 'song-list';
      trackResults.forEach((t,i) => list.appendChild(makeGlobalTrackItem(t, i, trackResults)));
      s.appendChild(list); el.appendChild(s);
    }
    if(!artists.length && !albumResults.length && !trackResults.length) {
      el.innerHTML = '<div class="empty-state"><div class="icon">🔍</div><p>Keine Ergebnisse gefunden</p></div>';
    }
  } catch(e) { el.innerHTML = `<p style="color:var(--danger)">Suche fehlgeschlagen: ${e.message}</p>`; }
}

export async function loadItunesAlbum(album) {
  try {
    const tracks = await itunesLookupAlbum(album.collectionId);
    if(!tracks.length) { toast('Keine Tracks gefunden'); return; }
    const el = document.getElementById('global-search-results');
    const s = document.createElement('div'); s.className = 'search-section';
    s.innerHTML = `<div style="display:flex;align-items:center;gap:10px;margin-bottom:12px">
      <button class="back-btn" style="margin:0" onclick="document.getElementById('global-search-input').dispatchEvent(new Event('input'))"><svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="15 18 9 12 15 6"/></svg>Zurück</button>
      <div style="flex:1">
        <div style="font-size:15px;font-weight:700">${esc(album.collectionName)}</div>
        <div style="font-size:12px;color:var(--text2)">${esc(album.artistName)}</div>
      </div>
      <button class="btn-outline blue" style="font-size:12px;padding:7px 12px" onclick="openDlModal({artistName:'${esc(album.artistName)}',trackName:'${esc(album.collectionName)}',artworkUrl100:'${album.artworkUrl100||''}',collectionName:'${esc(album.collectionName)}',isAlbum:true,itunesData:${JSON.stringify(album).replace(/"/g,'&quot;')}})">⬇ Album laden</button>
    </div>
    <div class="search-section-title">Tracks</div>`;
    const list = document.createElement('div'); list.className = 'song-list';
    tracks.forEach((t,i) => list.appendChild(makeGlobalTrackItem(t, i, tracks)));
    s.appendChild(list);
    el.innerHTML = ''; el.appendChild(s);
  } catch(e) { toast('Fehler: ' + e.message); }
}

export function loadItunesArtistResults(artistId, artistName) {
  navigate('artist-detail', { id: null, name: artistName, itunesArtistId: artistId });
}

// ─── NEW RELEASES ───
export async function loadNewReleases() {
  const albumEl = document.getElementById('nr-albums');
  const songEl  = document.getElementById('nr-songs');
  albumEl.innerHTML = '<div class="spinner"></div>'; songEl.innerHTML = '';
  try {
    const [albums, songs] = await Promise.all([itunesTopCharts(), itunesTopSongs()]);
    albumEl.innerHTML = '';
    albums.slice(0,30).forEach(a => {
      const art = a.artworkUrl100?.replace('100x100','300x300') || a.artworkUrl;
      const c = makeCard(a.name, a.artistName, art, '💿');
      c.onclick = () => itunesSearch(a.name+' '+a.artistName,'album',5).then(res => { if(res[0]) loadItunesAlbum(res[0]); });
      albumEl.appendChild(c);
    });
    songs.slice(0,40).forEach((s, i) => {
      const el = document.createElement('div'); el.className = 'gtrack-item';
      const art = s.artworkUrl?.replace('100x100','60x60');
      el.innerHTML = `
        <div class="gtrack-art">${art ? `<img src="${art}">` : `<div style="width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:22px">🎵</div>`}</div>
        <div class="gtrack-info">
          <div class="gtrack-title">${esc(s.name)}</div>
          <div class="gtrack-sub">${esc(s.artistName||'')}</div>
        </div>
        <div class="gtrack-actions">
          <span style="font-size:11px;color:var(--text3);font-family:var(--mono)">#${i+1}</span>
          <button class="icon-btn green" title="Auf Server laden" onclick="event.stopPropagation();openDlModal({trackName:'${esc(s.name)}',artistName:'${esc(s.artistName||'')}',artworkUrl100:'${s.artworkUrl||''}',collectionName:''})">
            <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>
          </button>
        </div>`;
      el.onclick = () => { itunesSearch(s.name+' '+s.artistName,'musicTrack',1).then(res => { if(res[0]?.previewUrl) playPreview(res[0]); }); };
      songEl.appendChild(el);
    });
  } catch(e) { albumEl.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

// ─── RECOMMENDATIONS ───
export async function loadRecommendations() {
  const el = document.getElementById('reco-content');
  const currentSong = S.queue[S.qIdx];
  if(!currentSong) {
    el.innerHTML = '<div class="empty-state"><div class="icon">🎵</div><p>Spiele zuerst Musik in deiner Bibliothek</p></div>';
    return;
  }
  el.innerHTML = '<div class="spinner"></div>';
  try {
    const artist = currentSong.artist || '';
    const title  = currentSong.title  || '';
    let html = `<div style="padding:14px;background:var(--surface);border-radius:10px;margin-bottom:20px;display:flex;align-items:center;gap:12px">
      <div style="font-size:28px">🎧</div>
      <div><div style="font-size:12px;color:var(--text2)">Basierend auf</div><div style="font-size:15px;font-weight:700">${esc(title)}</div><div style="font-size:13px;color:var(--text2)">${esc(artist)}</div></div>
    </div>`;
    el.innerHTML = html + '<div class="spinner"></div>';
    if(S.cfg.lastfmKey) {
      await loadLastfmRecommendations(el, artist, title, html);
    } else {
      await loadItunesFallbackRecommendations(el, artist, title, html);
      const note = document.createElement('div');
      note.style.cssText = 'margin-top:16px;padding:12px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;font-size:12px;color:var(--text3)';
      note.innerHTML = '💡 <strong>Tipp:</strong> Füge einen Last.fm API Key in den Einstellungen hinzu für bessere Empfehlungen & Similar Artists.';
      el.appendChild(note);
    }
  } catch(e) { el.innerHTML = `<p style="color:var(--danger)">${e.message}</p>`; }
}

async function loadLastfmRecommendations(el, artist, title, html) {
  const BASE = 'https://ws.audioscrobbler.com/2.0';
  const key = S.cfg.lastfmKey;
  try {
    const [simArtists, topTracks, simTracks] = await Promise.all([
      fetch(`${BASE}/?method=artist.getSimilar&artist=${encodeURIComponent(artist)}&api_key=${key}&format=json&limit=12`).then(r=>r.json()),
      fetch(`${BASE}/?method=artist.getTopTracks&artist=${encodeURIComponent(artist)}&api_key=${key}&format=json&limit=15`).then(r=>r.json()),
      fetch(`${BASE}/?method=track.getSimilar&artist=${encodeURIComponent(artist)}&track=${encodeURIComponent(title)}&api_key=${key}&format=json&limit=15`).then(r=>r.json()),
    ]);
    el.innerHTML = html;
    const simArtistList = simArtists.similarartists?.artist || [];
    const topTrackList  = topTracks.toptracks?.track || [];
    const simTrackList  = simTracks.similartracks?.track || [];
    if(simArtistList.length) {
      el.innerHTML += `<div class="section-title" style="margin-bottom:10px">Ähnliche Künstler</div><div style="display:flex;flex-wrap:wrap;gap:6px;margin-bottom:24px">`;
      el.innerHTML += simArtistList.map(a => `<button class="reco-artist-chip" onclick="searchSimilarArtist('${esc(a.name)}')">${esc(a.name)}</button>`).join('');
      el.innerHTML += '</div>';
    }
    if(simTrackList.length) {
      const sec = document.createElement('div');
      sec.innerHTML = `<div class="section-title" style="margin-bottom:10px">Ähnliche Tracks</div>`;
      const list = document.createElement('div'); list.className = 'song-list';
      simTrackList.slice(0,15).forEach(t => {
        const row = document.createElement('div'); row.className = 'gtrack-item';
        row.innerHTML = `<div class="gtrack-art"><div style="width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:22px">🎵</div></div>
          <div class="gtrack-info"><div class="gtrack-title">${esc(t.name)}</div><div class="gtrack-sub">${esc(t.artist?.name||'')}</div></div>
          <div class="gtrack-actions">
            <button class="icon-btn blue" onclick="event.stopPropagation();searchAndPreview('${esc(t.name)}','${esc(t.artist?.name||'')}')"><svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor"><polygon points="5 3 19 12 5 21 5 3"/></svg></button>
            <button class="icon-btn green" onclick="event.stopPropagation();openDlModal({trackName:'${esc(t.name)}',artistName:'${esc(t.artist?.name||'')}',artworkUrl100:'',collectionName:''})"><svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg></button>
          </div>`;
        row.onclick = () => searchAndPreview(t.name, t.artist?.name||'');
        list.appendChild(row);
      });
      sec.appendChild(list); el.appendChild(sec);
    }
    if(topTrackList.length) {
      const sec = document.createElement('div'); sec.style.marginTop = '20px';
      sec.innerHTML = `<div class="section-title" style="margin-bottom:10px">Top Tracks von ${esc(artist)}</div>`;
      const list = document.createElement('div'); list.className = 'song-list';
      topTrackList.slice(0,10).forEach(t => {
        const row = document.createElement('div'); row.className = 'gtrack-item';
        row.innerHTML = `<div class="gtrack-art"><div style="width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:22px">🎵</div></div>
          <div class="gtrack-info"><div class="gtrack-title">${esc(t.name)}</div><div class="gtrack-sub">${esc(t.artist?.name||artist)}</div></div>
          <div class="gtrack-actions">
            <button class="icon-btn blue" onclick="event.stopPropagation();searchAndPreview('${esc(t.name)}','${esc(artist)}')"><svg width="14" height="14" viewBox="0 0 24 24" fill="currentColor"><polygon points="5 3 19 12 5 21 5 3"/></svg></button>
            <button class="icon-btn green" onclick="event.stopPropagation();openDlModal({trackName:'${esc(t.name)}',artistName:'${esc(artist)}',artworkUrl100:'',collectionName:''})"><svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg></button>
          </div>`;
        row.onclick = () => searchAndPreview(t.name, artist);
        list.appendChild(row);
      });
      sec.appendChild(list); el.appendChild(sec);
    }
  } catch { await loadItunesFallbackRecommendations(el, artist, title, html); }
}

async function loadItunesFallbackRecommendations(el, artist, title, html) {
  const results = await itunesSearch(artist, 'musicTrack', 20);
  el.innerHTML = html;
  const sec = document.createElement('div');
  sec.innerHTML = `<div class="section-title" style="margin-bottom:10px">Mehr von ${esc(artist)}</div>`;
  const list = document.createElement('div'); list.className = 'song-list';
  results.filter(t => t.artistName===artist).slice(0,15).forEach(t => list.appendChild(makeGlobalTrackItem(t, 0, [t])));
  if(!list.children.length) results.slice(0,15).forEach(t => list.appendChild(makeGlobalTrackItem(t, 0, [t])));
  sec.appendChild(list); el.appendChild(sec);
}

// ─── HELPERS ───
export function expandArtistBio() {
  const el = document.getElementById('artist-bio-text');
  if(el && window._artistBioFull) el.textContent = window._artistBioFull;
}

export function searchSimilarArtist(artistName) {
  navigate('discover');
  document.getElementById('global-search-input').value = artistName;
  onGlobalSearch(artistName);
}

export async function searchAndPreview(trackName, artistName) {
  try {
    const res = await itunesSearch(trackName+' '+artistName, 'musicTrack', 1);
    if(res[0]?.previewUrl) playPreview(res[0]); else toast('Kein Preview verfügbar');
  } catch { toast('Suche fehlgeschlagen'); }
}

export async function s_goArtist(e, name, id) {
  if(!name) return;
  if(id) { navigate('artist-detail', {id, name}); return; }
  try {
    const r = await api('search3', `&query=${encodeURIComponent(name)}&artistCount=5&albumCount=0&songCount=0`);
    const artists = r.searchResult3?.artist || [];
    const match = artists.find(a => a.name.toLowerCase() === name.toLowerCase()) || artists[0];
    if(match) navigate('artist-detail', {id: match.id, name: match.name});
    else toast('Künstler nicht gefunden');
  } catch { toast('Suche fehlgeschlagen'); }
}

export function s_goAlbum(e, albumId, albumName, artist, artistId) {
  if(albumId) navigate('album-detail', {id:albumId, name:albumName, artist, artistId:artistId||'', coverArt:''});
}

export function playerBarGoAlbum() {
  const s = S.queue[S.qIdx];
  if(!s) return;
  if(S.npOpen) closeNowPlaying();
  if(s.albumId) navigate('album-detail', {id:s.albumId, name:s.album||'', artist:s.artist||'', artistId:s.artistId||'', coverArt:s.coverArt||''});
}

export function playerBarGoArtist() {
  const s = S.queue[S.qIdx];
  if(!s || !s.artist) return;
  if(S.npOpen) closeNowPlaying();
  navigate('artist-detail', {id: s.artistId||s.artist, name: s.artist});
}