// Koast Radio website: mobile menu, light/dark switch, current year, the
// site-wide live player, and the contact form (opens the visitor's email app
// with the details filled in, so it works on any host with no form service).
(() => {
  const $ = s => document.querySelector(s);

  // Direct stream URL for a future native <audio> player. The site uses the
  // station's MediaCP player (iframe) today; set this to the direct stream
  // once confirmed from MediaCP (Station 8 config) to drop the iframe.
  window.KOAST_STREAM = '';

  const menu = $('.menu-toggle'), nav = $('.nav');
  if (menu && nav) {
    menu.addEventListener('click', () => {
      const open = nav.classList.toggle('open');
      menu.setAttribute('aria-expanded', open);
    });
    nav.addEventListener('click', e => { if (e.target.closest('a')) nav.classList.remove('open'); });
  }

  // Use the menu button whenever the full menu doesn't fit beside the logo.
  const header = $('.site-header'), brand = $('.site-header .brand');
  const fit = () => {
    if (!header || !brand || !nav) return;
    header.classList.remove('compact');
    if (getComputedStyle(nav).position === 'absolute') return;
    const wrap = brand.parentElement, cs = getComputedStyle(wrap);
    const room = wrap.clientWidth - parseFloat(cs.paddingLeft) - parseFloat(cs.paddingRight);
    if (brand.offsetWidth + 24 + nav.scrollWidth > room) header.classList.add('compact');
  };
  fit();
  addEventListener('resize', fit);
  if (document.fonts) document.fonts.ready.then(fit);

  // Light / dark
  const root = document.documentElement, toggle = $('.theme-toggle');
  const current = () => root.dataset.theme || (matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
  const paint = () => { if (toggle) { toggle.textContent = current() === 'dark' ? '☀' : '☾'; toggle.setAttribute('aria-label', current() === 'dark' ? 'Use light mode' : 'Use dark mode'); } };
  try { const t = localStorage.getItem('koast-theme'); if (t === 'light' || t === 'dark') root.dataset.theme = t; } catch (e) {}
  paint();
  if (toggle) toggle.addEventListener('click', () => {
    root.dataset.theme = current() === 'dark' ? 'light' : 'dark';
    try { localStorage.setItem('koast-theme', root.dataset.theme); } catch (e) {}
    paint();
  });

  document.querySelectorAll('[data-year]').forEach(el => { el.textContent = new Date().getFullYear(); });

  // Site-wide mini player: shown only with JS (so no-JS listeners use the
  // header "Listen Live" link). The stream loads on first play.
  const mp = $('#miniplayer');
  if (mp) {
    mp.hidden = false;
    document.body.classList.add('has-miniplayer');
    const play = $('#mp-play'), drawer = $('#mp-drawer'), frame = drawer && drawer.querySelector('iframe');
    const label = play && play.querySelector('span');
    if (play && drawer && frame) {
      play.addEventListener('click', () => {
        const open = drawer.hidden;
        if (open && !frame.src) frame.src = frame.dataset.src;   // load stream once
        drawer.hidden = !open;
        play.setAttribute('aria-expanded', open);
        play.classList.toggle('playing', open);
        if (label) label.textContent = open ? 'Close player' : 'Listen live';
      });
    }
  }

  // Contact form -> opens the email app with the message ready to send.
  const form = $('#contact-form');
  if (form) form.addEventListener('submit', e => {
    e.preventDefault();
    const f = new FormData(form);
    const topic = f.get('topic') || 'Enquiry';
    const lines = [
      'Name: ' + (f.get('name') || ''),
      'Email: ' + (f.get('email') || ''),
      'Phone: ' + (f.get('phone') || ''),
      'About: ' + topic,
      '',
      f.get('message') || '',
    ];
    const subject = 'Koast Radio website: ' + topic + (f.get('name') ? ' (' + f.get('name') + ')' : '');
    location.href = 'mailto:hello@koastradio.co.uk?subject=' + encodeURIComponent(subject) + '&body=' + encodeURIComponent(lines.join('\n'));
    const note = $('#form-note');
    if (note) note.textContent = 'Your email app should open with your message ready to send. If it doesn\'t, email hello@koastradio.co.uk or call the studio.';
  });
})();