'use strict';
// ---- Podcast: your shows and episodes from Podgrab, through the hub (the server holds the Podgrab sign-in). Episodes play in the same player as Music.
const pdApi = (p, opts) => jfetch('/api/podcast' + p, opts);
const pdOpt = (m, o) => ({ method: m, headers: { 'content-type': 'application/json' }, body: o ? JSON.stringify(o) : undefined });
// Podgrab sends its field names with a capital letter (ID, Title, ...); accept either spelling.
const pdF = (o, k) => o == null ? undefined : o[k] !== undefined ? o[k] : o[k[0].toUpperCase() + k.slice(1)] !== undefined ? o[k[0].toUpperCase() + k.slice(1)] : o[k.toUpperCase()];
const pdId = o => pdF(o, 'id');
const pdImg = (kind, o, w) => `/api/podcast/${kind}/${encodeURIComponent(pdId(o))}/image`;
const pdDur = s => { s = Math.round(+s || 0); if (!s) return ''; const h = Math.floor(s / 3600), m = Math.floor(s % 3600 / 60); return h ? h + ' h ' + m + ' min' : Math.max(1, m) + ' min'; };
const pdDate = d => { const t = Date.parse(d); return t > 0 ? new Date(t).toLocaleDateString([], { month: 'short', day: 'numeric', year: 'numeric' }) : ''; };
const pdTime = d => Math.max(0, Date.parse(d) || 0);
const pdPlain = h => { const d = document.createElement('div'); d.innerHTML = String(h || ''); return (d.textContent || '').trim(); };
const pdTrack = (e, show) => ({ key: 'pod:' + pdId(e), title: pdF(e, 'title') || 'Episode', artist: pdF(show, 'title') || '', album: '', thumb: pdImg('podcasts', show), src: '/api/podcast/podcastitems/' + encodeURIComponent(pdId(e)) + '/file', dur: (+pdF(e, 'duration') || 0) * 1000 });

async function viewPodcast(args = []) {
  const v = $('#view');
  v.innerHTML = '<div class="wrap"><h1>Podcast</h1><p class="empty">Loading…</p></div>';
  try {
    if (args[0] === 'show' && args[1]) return await pdShow(args[1]);
    return await pdHome();
  } catch (e) {
    if (!location.hash.startsWith('#/podcast')) return;
    v.innerHTML = `<div class="wrap"><h1>Podcast</h1><p class="err">${esc(e.message)}</p><div class="bar"><button class="btn ghost" id="pdretry">Try again</button>${cfg.podcast ? `<a class="btn ghost" href="${esc(cfg.podcast)}" target="_blank" rel="noopener">Open Podgrab</a>` : ''}</div></div>`;
    $('#pdretry').onclick = () => route();
  }
}

async function pdHome() {
  const list = await pdApi('/podcasts?sort=lastepisode&order=desc'), shows = Array.isArray(list) ? list : (list.podcasts || []);
  if (!location.hash.startsWith('#/podcast')) return;
  $('#view').innerHTML = `<div class="wrap"><div class="ptop"><h1>Podcast</h1><span class="pspace grow"></span><button class="btn" id="pdadd">${icon('plus')}Add podcast</button></div>
    ${shows.length ? `<div class="vgrid">${shows.map(s => `<a class="vcard" href="#/podcast/show/${encodeURIComponent(pdId(s))}">
      <span class="vimg" style="aspect-ratio:1/1"><img loading="lazy" alt="" src="${pdImg('podcasts', s)}" onerror="this.remove()"></span>
      <b>${esc(pdF(s, 'title'))}</b><small>${esc([pdF(s, 'allEpisodesCount') ? pdF(s, 'allEpisodesCount') + ' episodes' : '', pdF(s, 'isPaused') ? 'paused' : ''].filter(Boolean).join(' · '))}</small></a>`).join('')}</div>`
      : '<p class="empty">No podcasts yet. Add one with its feed address.</p>'}</div>`;
  $('#pdadd').onclick = () => {
    const el = openSheet('Add podcast', 'Paste the podcast\'s feed (RSS) address', `<input type="url" id="pdurl" placeholder="https://example.com/feed.xml" autocomplete="off" autocapitalize="off"><div class="err" id="pde"></div><div class="bar"><button class="btn" id="pdgo">Add</button></div>`);
    const go = async () => {
      const url = el.querySelector('#pdurl').value.trim(); if (!/^https?:\/\//i.test(url)) { el.querySelector('#pde').textContent = 'Enter a feed address starting with http'; return; }
      el.querySelector('#pdgo').disabled = true;
      try { await pdApi('/podcasts', pdOpt('POST', { url })); closeSheet(); toast('Added; episodes will appear in a moment'); route(); }
      catch (e) { el.querySelector('#pde').textContent = e.status === 502 || e.status === 409 || e.status === 400 ? 'Podgrab could not add that (it may already be there)' : e.message; el.querySelector('#pdgo').disabled = false; }
    };
    el.querySelector('#pdgo').onclick = go; el.querySelector('#pdurl').onkeydown = e => { if (e.key === 'Enter') go(); }; el.querySelector('#pdurl').focus();
  };
}

async function pdShow(id) {
  const [show, items0] = await Promise.all([pdApi('/podcasts/' + encodeURIComponent(id)), pdApi('/podcasts/' + encodeURIComponent(id) + '/items')]);
  if (!location.hash.startsWith('#/podcast')) return;
  const items = (Array.isArray(items0) ? items0 : []).sort((a, b) => pdTime(pdF(b, 'pubDate')) - pdTime(pdF(a, 'pubDate')));
  const paused = !!pdF(show, 'isPaused'), ep = e => `<div class="row pdep" data-id="${esc(pdId(e))}"><button class="ic" data-play style="background:var(--accent);color:#fff;border:0" aria-label="Play">${icon('play')}</button>
      <span class="grow"><b${pdF(e, 'isPlayed') ? ' style="color:var(--muted)"' : ''}>${esc(pdF(e, 'title'))}</b><small>${esc([pdDate(pdF(e, 'pubDate')), pdDur(pdF(e, 'duration')), pdF(e, 'isPlayed') ? 'played' : ''].filter(Boolean).join(' · '))}</small></span>
      <button class="ibtn" data-seen aria-label="${pdF(e, 'isPlayed') ? 'Mark unplayed' : 'Mark played'}" title="${pdF(e, 'isPlayed') ? 'Mark unplayed' : 'Mark played'}" style="${pdF(e, 'isPlayed') ? 'color:var(--accent)' : ''}">${icon('check')}</button></div>`;
  $('#view').innerHTML = `<div class="wrap"><div class="ptop"><a class="btn ghost" href="#/podcast">${icon('back')}Back</a></div>
    <div style="display:flex;gap:16px;align-items:flex-start"><span class="vimg" style="width:120px;flex:none;aspect-ratio:1/1"><img alt="" src="${pdImg('podcasts', show)}" onerror="this.remove()"></span>
      <div style="min-width:0"><h1 style="margin:0">${esc(pdF(show, 'title'))}</h1><p class="sub" style="margin:2px 0 0">${esc(pdF(show, 'author') || '')}</p>
      <p class="sub" style="margin:6px 0 0;white-space:normal;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden">${esc(pdPlain(pdF(show, 'summary')))}</p></div></div>
    <div class="bar">${items.length ? `<button class="btn" id="pdlatest">${icon('play')}Play latest</button>` : ''}<button class="btn ghost" id="pdmore">${icon('more')}More</button></div>
    <h2>Episodes</h2><div class="list">${items.map(ep).join('') || '<p class="empty">No episodes yet. Podgrab may still be fetching the feed.</p>'}</div></div>`;
  const byId = new Map(items.map(e => [String(pdId(e)), e]));
  const playFrom = e => { const i = items.indexOf(e); playQueue(items.slice(0, i + 1).reverse().map(x => pdTrack(x, show)), 0); }; // this one, then the newer ones after it
  document.querySelectorAll('.pdep').forEach(r => {
    const e = byId.get(r.dataset.id);
    r.querySelector('[data-play]').onclick = () => playFrom(e);
    r.querySelector('[data-seen]').onclick = async () => {
      try { await pdApi('/podcastitems/' + encodeURIComponent(pdId(e)) + (pdF(e, 'isPlayed') ? '/markUnplayed' : '/markPlayed')); route(); } catch (err) { toast(err.message); }
    };
  });
  if ($('#pdlatest')) $('#pdlatest').onclick = () => playFrom(items[0]);
  $('#pdmore').onclick = () => {
    const el = openSheet(pdF(show, 'title'), '', `<div class="list"><button class="row" id="pda"><span class="grow"><b>Download all episodes</b><small>Podgrab keeps a copy of each one</small></span></button>
      <button class="row" id="pdp"><span class="grow"><b>${paused ? 'Resume checking for new episodes' : 'Pause checking for new episodes'}</b></span></button>
      <button class="row" id="pdd"><span class="grow"><b style="color:var(--danger)">Remove this podcast</b><small>Also deletes its downloaded episodes</small></span></button></div>`);
    const act = (sel, fn, msg) => el.querySelector(sel).onclick = async () => { try { await fn(); closeSheet(); toast(msg); route(); } catch (e) { toast(e.message); } };
    act('#pda', () => pdApi('/podcasts/' + encodeURIComponent(id) + '/download'), 'Downloading in the background');
    act('#pdp', () => pdApi('/podcasts/' + encodeURIComponent(id) + (paused ? '/unpause' : '/pause')), paused ? 'Resumed' : 'Paused');
    el.querySelector('#pdd').onclick = () => { closeSheet(); confirmSheet('Remove this podcast?', 'Its episodes and downloaded files are deleted from Podgrab.', 'Remove', async () => {
      try { await pdApi('/podcasts/' + encodeURIComponent(id), { method: 'DELETE' }); toast('Removed'); location.hash = '#/podcast'; } catch (e) { toast(e.message); } }); };
  };
}