// About page hero — vanilla fade-carousel (replaces Bootstrap Carousel).
(function () {
  const caro = document.getElementById('caro-lead');
  const tv = document.getElementById('tv'); // full-bleed grayscale bg video
  if (tv) { try { tv.play(); } catch (e) {} }
  if (!caro) return;

  const slides = Array.from(caro.querySelectorAll('.dw-fade-slide'));
  const dots = Array.from(caro.querySelectorAll('.dw-fade-dot'));
  const INTERVAL = 5000;
  let index = 0;
  let timer = null;

  // The brain slide's #brain SVG ships with .hide-svg; reveal + line-draw it.
  function drawBrain(slide) {
    const brain = slide.querySelector('#brain');
    if (!brain || !window.DrawFillSVG) return;
    window.setTimeout(function () {
      brain.classList.remove('hide-svg', 'fade-svg');
      try { new window.DrawFillSVG({ elementId: 'brain' }).replay(); } catch (e) {}
    }, 600);
  }

  function activate(i) {
    i = Math.max(0, Math.min(slides.length - 1, i)); // wrap:false → clamp
    index = i;
    slides.forEach((s, n) => s.classList.toggle('active', n === i));
    dots.forEach((d, n) => d.classList.toggle('active', n === i));
    drawBrain(slides[i]);
  }

  function next() {
    if (index >= slides.length - 1) { stop(); return; } // wrap:false — stop at end
    activate(index + 1);
  }
  function start() { stop(); timer = window.setInterval(next, INTERVAL); }
  function stop() { if (timer) { window.clearInterval(timer); timer = null; } }

  dots.forEach(function (d) {
    d.addEventListener('click', function (e) {
      e.preventDefault();
      activate(parseInt(d.dataset.slide, 10) || 0);
      start();
    });
  });

  document.addEventListener('keyup', function (e) {
    if (e.key === 'ArrowRight') activate(index + 1);
    else if (e.key === 'ArrowLeft') activate(index - 1);
  });

  caro.addEventListener('mouseenter', stop);
  caro.addEventListener('mouseleave', start);

  activate(0);
  start();
})();

// navbar hide/show on scroll (ported from jQuery dw_hidenav)
(function () {
  const navbar = document.querySelector('.navbar');
  if (!navbar) return;
  const title = document.querySelector('.site-title a');
  const headerHeight = navbar.offsetHeight;
  let previousTop = 0;
  window.addEventListener('scroll', function () {
    const currentTop = window.scrollY;
    if (currentTop < previousTop) {
      if (currentTop > 0 && navbar.classList.contains('fixed')) {
        navbar.classList.add('visible');
        if (title) title.classList.remove('light');
      } else {
        navbar.classList.remove('visible', 'fixed');
        if (title) title.classList.add('light');
      }
    } else {
      navbar.classList.remove('visible');
      if (currentTop > headerHeight && !navbar.classList.contains('fixed')) {
        navbar.classList.add('fixed');
      }
    }
    previousTop = currentTop;
  }, { passive: true });
})();

document.querySelectorAll('.nav-toggle').forEach(function (el) {
  el.addEventListener('click', function (e) {
    e.preventDefault();
    el.classList.toggle('active');
  });
});

// Comment-form validation (jquery-validation) + FullCalendar still use jQuery.
jQuery(document).ready(function ($) {

  $('#commentform').validate({
    rules: {
      author: { required: true, minlength: 2 },
      email: { required: true, email: true },
      comment: { required: true, minlength: 3 }
    },
    messages: {
      author: 'Please enter in your name.',
      email: 'Please enter a valid email address.',
      comment: 'Nothing to Say?'
    },
    errorElement: 'div',
    errorPlacement: function (error, element) {
      element.before(error);
    }
  });

  var calendarEl = document.getElementById('calendar');
  if (calendarEl) {
    var calendar = new FullCalendar.Calendar(calendarEl, {
      headerToolbar: { start: 'title', center: '', end: 'prev,next' },
      firstDay: 1,
      height: 380,
      views: {
        dayGrid: { hiddenDays: [0, 6, 7] },
        timeGrid: {
          slotMinTime: '08:00:00',
          slotMaxTime: '17:00:00',
          dayHeaderFormat: { weekday: 'short' },
          hiddenDays: [0, 6, 7]
        }
      },
      googleCalendarApiKey: 'AIzaSyAGowGJYx6dOaQvG_vSUI73uT88VWOTcNQ',
      events: {
        googleCalendarId: 'davidawindham.com_bvrht1f8n2vgldgjenpgfdd4bk@group.calendar.google.com',
        className: 'gcal-event'
      },
      eventDataTransform: function (event) { event.url = ''; return event; },
      eventClick: function (info) { info.jsEvent.preventDefault(); }
    });
    calendar.render();
  }
});