'use strict';
// Desktop keyboard shortcuts for Mail (the video and music players have their own, in video.js and player.js), and "?" for the list of all of them.
addEventListener('keydown', e => {
  if (e.metaKey || e.ctrlKey || e.altKey || document.getElementById('sheet') || document.body.classList.contains('editing')) return;
  const t = e.target, tag = t.tagName || '', k = e.key;
  if (/^(INPUT|TEXTAREA|SELECT)$/.test(tag) || t.isContentEditable) return;
  if (k === '?') { e.preventDefault(); return keysHelp(); }
  if (!location.hash.startsWith('#/mail') || typeof mail === 'undefined') return;
  if (k === 'j' || k === 'k') { // next / previous message in the list
    const rows = [...document.querySelectorAll('a.mrow')]; if (!rows.length) return;
    const sel = rows.findIndex(a => a.classList.contains('sel')), i = Math.max(0, Math.min(rows.length - 1, sel < 0 ? 0 : sel + (k === 'j' ? 1 : -1)));
    e.preventDefault(); location.hash = rows[i].getAttribute('href'); rows[i].scrollIntoView({ block: 'nearest' }); return;
  }
  if (!mail.msg) return;
  const act = { e: 'archive', '#': 'delete', Delete: 'delete', r: 'reply', a: 'replyAll', f: 'forward', u: 'unread', s: 'flag' }[k];
  if (act) { e.preventDefault(); mailAction(act); }
  else if (k === 'Escape' || k === 'x') { location.hash = '#/mail/f/' + encodeURIComponent(mail.folder); }
});
function keysHelp() {
  const row = (k, d) => `<tr><td style="padding:4px 14px 4px 0"><kbd>${k}</kbd></td><td>${d}</td></tr>`;
  const el = openSheet('Keyboard shortcuts', '', `<table style="width:100%;font-size:14px"><tbody>
    <tr><th colspan="2" style="text-align:left;padding-top:4px">Anywhere</th></tr>${row('Ctrl/⌘ K', 'Search and commands')}${row('?', 'This list')}${row('Space', 'Play or pause music')}${row('← →', 'Back or forward 10 s')}${row('N / P', 'Next or previous track')}
    <tr><th colspan="2" style="text-align:left;padding-top:10px">Mail</th></tr>${row('J / K', 'Next or previous message')}${row('E', 'Archive')}${row('# or Delete', 'Delete')}${row('R / A / F', 'Reply, reply all, forward')}${row('U', 'Mark unread')}${row('S', 'Flag')}${row('Esc or X', 'Back to the list')}
    <tr><th colspan="2" style="text-align:left;padding-top:10px">Video player</th></tr>${row('Space or K', 'Play or pause')}${row('← → / J L', 'Back or forward 10 s (30 s with Shift or J/L)')}${row('↑ ↓', 'Volume')}${row('F', 'Full screen')}${row('M', 'Mute')}${row('N / P', 'Next or previous episode')}${row('0–9', 'Jump to 0–90% of the way through')}</tbody></table>
    <div class="bar"><button class="btn ghost" id="kx" style="flex:1;justify-content:center">Close</button></div>`);
  el.querySelector('#kx').onclick = closeSheet;
}