'use strict';
// ---- Radio: The Journey FM on top, your saved stations, and a search of thousands more (Radio Browser). The hub passes the stream on (and reads the song title
// out of it), so stations that only offer plain http still play, and everything plays in the same player as Music.
const rdoApi = (p, opts) => jfetch('/api/radio' + p, opts);
const rdoOpt = (m, o) => ({ method: m, headers: { 'content-type': 'application/json' }, body: o ? JSON.stringify(o) : undefined });
const rdoIcon = s => s.favicon ? '/api/radio/icon?u=' + encodeURIComponent(s.favicon) : '';
const rdoTrack = s => ({ key: 'radio:' + s.id, title: s.name, artist: 'Live radio', album: [s.state, s.country].filter(Boolean).join(', '), thumb: rdoIcon(s), src: '/api/radio/play/' + encodeURIComponent(s.id), nocache: true, dur: 0, station: s.name });
const rdoPlaying = () => { const t = cur(); return t && String(t.key).startsWith('radio:') ? t : null; };
const rdoMeta = s => [s.tags && s.tags.split(',').slice(0, 2).join(', '), s.state || s.country, s.codec && (s.codec + (s.bitrate ? ' ' + s.bitrate + 'k' : ''))].filter(Boolean).join(' · ');
const rdoChips = [['Christian', 'christian'], ['Worship', 'worship'], ['Gospel', 'gospel'], ['Talk', 'talk'], ['News', 'news'], ['Classical', 'classical'], ['Jazz', 'jazz'], ['Country', 'country'], ['Oldies', 'oldies']];
let rdoSaved = [], rdoNow = {};

/** While a station plays, ask what song is on every 20 seconds and show it in the player. */
async function rdoPoll() {
  const t = rdoPlaying(); if (!t) return;
  const id = t.key.slice(6);
  try {
    const n = await rdoApi('/now/' + encodeURIComponent(id)); if (!rdoPlaying() || rdoPlaying().key !== t.key) return;
    rdoNow[id] = n; t.title = n.title || t.station; t.artist = n.title ? (n.artist || t.station) : 'Live radio'; t.album = n.title ? t.station : t.album;
    if (typeof updateNow === 'function') updateNow(); const el = document.getElementById('rdonow'); if (el && rdoPlaying()) el.dataset.id === id && rdoDrawNow(el, n);
  } catch {}
}
setInterval(rdoPoll, 20000); pl.a.addEventListener('playing', () => { if (rdoPlaying()) setTimeout(rdoPoll, 1500); });
function rdoDrawNow(el, n) { el.innerHTML = n && n.title ? `<small>Now playing</small><b>${esc(n.title)}</b>${n.artist ? '<span> · ' + esc(n.artist) + '</span>' : ''}` : '<small>Live</small>'; }

async function viewRadio() {
  const v = $('#view'); v.innerHTML = '<div class="wrap"><h1>Radio</h1><p class="empty">Loading…</p></div>';
  let feat, mine;
  try { ({ featured: feat, mine } = await rdoApi('/stations')); } catch (e) { v.innerHTML = `<div class="wrap"><h1>Radio</h1><p class="err">${esc(e.message)}</p></div>`; return; }
  if (!location.hash.startsWith('#/radio')) return;
  rdoSaved = mine; const S = { q: '', tag: 'christian', items: [], more: false, busy: false, seq: 0, off: 0 };
  const saved = id => rdoSaved.some(x => x.id === id);
  const row = (s, fav) => `<div class="row rdorow${rdoPlaying() && rdoPlaying().key === 'radio:' + s.id ? ' playing' : ''}" data-id="${esc(s.id)}"><button class="rdoplay" data-play aria-label="Play ${esc(s.name)}"><span class="art">${s.favicon ? `<img alt="" loading="lazy" src="${esc(rdoIcon(s))}" onerror="this.remove()">` : ''}</span>
    <span class="grow"><b>${esc(s.name)}</b><small>${esc(rdoMeta(s))}</small></span>${icon('play')}</button>${s.featured ? '' : `<button class="ibtn" data-fav aria-label="${saved(s.id) ? 'Remove from my stations' : 'Save to my stations'}" title="${saved(s.id) ? 'Remove from my stations' : 'Save to my stations'}" style="${saved(s.id) ? 'color:var(--danger)' : ''}">${icon('heart')}</button>`}</div>`;
  const j = feat[0];
  v.innerHTML = `<div class="wrap"><h1>Radio</h1>
    <div class="card rdofeat" style="max-width:none"><div class="sub" style="margin:0">Featured</div><h2 style="margin:2px 0 0;font-size:22px;text-transform:none;letter-spacing:0;color:var(--text)">${esc(j.name)}</h2>
      <p class="sub" style="margin:2px 0 10px">${esc(rdoMeta(j))}</p><div id="rdonow" data-id="${esc(j.id)}" class="rdonow"><small>Live</small></div>
      <div class="bar"><button class="btn" id="rdojp">${icon('play')}Listen live</button><a class="btn ghost" href="${esc(j.homepage)}" target="_blank" rel="noopener">${icon('ext')}Website</a><button class="btn ghost" id="rdojr">Recently played</button></div></div>
    <div id="rdomine"></div><h2>Find stations</h2><input type="search" id="rdoq" placeholder="Search stations by name" autocomplete="off" autocapitalize="off" style="width:100%">
    <div class="seg" id="rdochips">${rdoChips.map(([l, t]) => `<a href="#" data-t="${t}" class="${t === S.tag ? 'on' : ''}">${l}</a>`).join('')}</div><div id="rdores" class="list"></div><div id="rdomore" class="bar" style="justify-content:center"></div></div>`;
  const playStation = s => { playQueue([rdoTrack(s)], 0); toast('Tuning in to ' + s.name); drawAll(); setTimeout(rdoPoll, 2500); };
  const bindRows = (root, byId) => { root.querySelectorAll('.rdorow').forEach(r => { const s = byId(r.dataset.id); r.querySelector('[data-play]').onclick = () => playStation(s);
    const f = r.querySelector('[data-fav]'); if (f) f.onclick = async () => { try { if (saved(s.id)) { await rdoApi('/stations/' + encodeURIComponent(s.id), rdoOpt('DELETE')); rdoSaved = rdoSaved.filter(x => x.id !== s.id); } else { await rdoApi('/stations', rdoOpt('POST', { id: s.id })); rdoSaved.push(s); } drawAll(); } catch (e) { toast(e.message); } }; }); };
  const drawMine = () => { $('#rdomine').innerHTML = rdoSaved.length ? `<h2>My stations</h2><div class="list">${rdoSaved.map(s => row(s)).join('')}</div>` : ''; bindRows($('#rdomine'), id => rdoSaved.find(x => x.id === id)); };
  const drawRes = () => { $('#rdores').innerHTML = S.items.length ? S.items.map(s => row(s)).join('') : S.busy ? '<p class="empty">Searching…</p>' : '<p class="empty">No stations found.</p>'; bindRows($('#rdores'), id => S.items.find(x => x.id === id));
    $('#rdomore').innerHTML = S.more && !S.busy ? '<button class="btn ghost" id="rdomb">Show more</button>' : ''; if ($('#rdomb')) $('#rdomb').onclick = () => run(false); };
  const drawAll = () => { drawMine(); drawRes(); };
  const run = async reset => {
    const my = ++S.seq; if (reset) { S.off = 0; S.items = []; } S.busy = true; if (reset) drawRes();
    try { const r = await rdoApi(`/search?q=${encodeURIComponent(S.q)}&tag=${encodeURIComponent(S.q ? '' : S.tag)}&offset=${S.off}`); if (my !== S.seq) return; S.items = S.items.concat(r.items); S.more = r.more; S.off += 30; }
    catch (e) { if (my === S.seq) { $('#rdores').innerHTML = `<p class="err" style="padding:12px">${esc(e.message)}</p>`; S.busy = false; return; } }
    if (my === S.seq) { S.busy = false; drawRes(); }
  };
  $('#rdojp').onclick = () => playStation(j);
  $('#rdojr').onclick = async () => { const el = openSheet('Recently played', j.name, '<p class="empty">Loading…</p>'); try { const n = await rdoApi('/now/journeyfm'); el.querySelector('.empty').outerHTML = n.recent.length ? `<div class="list">${n.recent.map(x => `<div class="row"><span class="grow"><b>${esc(x.title)}</b><small>${esc(x.artist)}</small></span></div>`).join('')}</div>` : '<p class="empty">Nothing to show right now.</p>'; } catch (e) { el.querySelector('.empty').outerHTML = `<p class="err">${esc(e.message)}</p>`; } };
  $('#rdochips').querySelectorAll('a').forEach(a => a.onclick = e => { e.preventDefault(); S.tag = a.dataset.t; S.q = ''; $('#rdoq').value = ''; $('#rdochips').querySelectorAll('a').forEach(x => x.classList.toggle('on', x === a)); run(true); });
  let t; $('#rdoq').oninput = e => { clearTimeout(t); t = setTimeout(() => { S.q = e.target.value.trim(); $('#rdochips').querySelectorAll('a').forEach(x => x.classList.toggle('on', !S.q && x.dataset.t === S.tag)); run(true); }, 450); };
  drawMine(); run(true);
  rdoApi('/now/journeyfm').then(n => { const el = $('#rdonow'); if (el) { rdoNow.journeyfm = n; rdoDrawNow(el, n); } }).catch(() => {});
}