/**
 * Kiosks Page Animators
 *   1. Self Check-In — cycles through three visitor check-in scenarios
 *   2. Self Order    — cycles active category + highlighted product in a catalogue kiosk
 *
 * Both respect prefers-reduced-motion and pause via IntersectionObserver.
 * Mirrors the patterns and conventions of solutions-animator.js.
 */

/* ── 1. Self Check-In Kiosk Animator ───────────────────────────────────── */
(function () {
  'use strict';

  if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) return;

  var CYCLE_MS = 3500; /* ms per scene */

  function initCheckin(stage) {
    var scenes = stage.querySelectorAll('.checkin-scene');
    if (!scenes.length) return;

    var state = { idx: 0, timer: null, paused: false };

    /* Show the first scene immediately */
    scenes[0].classList.add('is-active');

    function advance() {
      if (state.paused) return;
      scenes[state.idx].classList.remove('is-active');
      state.idx = (state.idx + 1) % scenes.length;
      scenes[state.idx].classList.add('is-active');
    }

    function startTimer() {
      if (state.timer) return;
      state.timer = setInterval(advance, CYCLE_MS);
    }

    function stopTimer() {
      clearInterval(state.timer);
      state.timer = null;
    }

    if ('IntersectionObserver' in window) {
      new IntersectionObserver(function (entries) {
        entries.forEach(function (e) {
          state.paused = !e.isIntersecting;
          e.isIntersecting ? startTimer() : stopTimer();
        });
      }, { rootMargin: '200px', threshold: 0.05 }).observe(stage);
    }

    startTimer();
  }

  function boot() {
    var stages = document.querySelectorAll('.checkin-stage');
    if (!stages.length) return;
    for (var i = 0; i < stages.length; i++) {
      if (stages[i]._checkinAnim) continue;
      stages[i]._checkinAnim = true;
      initCheckin(stages[i]);
    }
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', boot);
  } else {
    boot();
  }
}());

/* ── 2. Self-Order / Product Lookup Kiosk Animator ─────────────────────── */
(function () {
  'use strict';

  if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
    /* In reduced-motion: just show all products for the first category */
    document.addEventListener('DOMContentLoaded', function () {
      document.querySelectorAll('.selforder-stage').forEach(function (stage) {
        var first = stage.querySelector('.selforder-cat');
        if (first) first.classList.add('is-active');
        var cat = first ? first.getAttribute('data-so-cat') : null;
        if (cat) {
          stage.querySelectorAll('.selforder-product[data-so-cat="' + cat + '"]').forEach(function (p) {
            p.classList.add('is-visible');
          });
        }
      });
    });
    return;
  }

  /* Category rotation order */
  var CATS    = ['electronics', 'clothing', 'food', 'home'];
  var CYCLE_MS = 4000; /* ms per category */
  /* Which product index within the visible set to highlight each cycle */
  var HIGHLIGHT_IDX = [0, 1, 0, 1];

  function initSelfOrder(stage) {
    var catEls     = stage.querySelectorAll('.selforder-cat');
    var productEls = stage.querySelectorAll('.selforder-product');
    var addBtn     = stage.querySelector('.selforder-add');
    if (!catEls.length || !productEls.length) return;

    var state = { idx: 0, timer: null, paused: false };

    function showCategory(catIdx) {
      var cat = CATS[catIdx % CATS.length];

      /* Update category tabs */
      for (var i = 0; i < catEls.length; i++) {
        catEls[i].classList.toggle('is-active', catEls[i].getAttribute('data-so-cat') === cat);
      }

      /* Show matching products, hide others */
      var visible = [];
      for (var j = 0; j < productEls.length; j++) {
        var matches = productEls[j].getAttribute('data-so-cat') === cat;
        productEls[j].classList.toggle('is-visible', matches);
        productEls[j].classList.remove('is-highlighted');
        if (matches) visible.push(productEls[j]);
      }

      /* Highlight one product after a short delay (simulates tap) */
      var hlIdx = HIGHLIGHT_IDX[catIdx % HIGHLIGHT_IDX.length];
      var toHighlight = visible[hlIdx % (visible.length || 1)];
      if (toHighlight) {
        setTimeout(function () {
          toHighlight.classList.add('is-highlighted');
          if (addBtn) {
            addBtn.removeAttribute('disabled');
            addBtn.classList.add('is-enabled');
          }
        }, 900);
      }

      /* Reset button when next cycle starts */
      if (addBtn) {
        addBtn.setAttribute('disabled', '');
        addBtn.classList.remove('is-enabled');
      }
    }

    /* Show first category immediately */
    showCategory(0);

    function advance() {
      if (state.paused) return;
      state.idx++;
      showCategory(state.idx);
    }

    function startTimer() {
      if (state.timer) return;
      state.timer = setInterval(advance, CYCLE_MS);
    }

    function stopTimer() {
      clearInterval(state.timer);
      state.timer = null;
    }

    if ('IntersectionObserver' in window) {
      new IntersectionObserver(function (entries) {
        entries.forEach(function (e) {
          state.paused = !e.isIntersecting;
          e.isIntersecting ? startTimer() : stopTimer();
        });
      }, { rootMargin: '200px', threshold: 0.05 }).observe(stage);
    }

    startTimer();
  }

  function boot() {
    var stages = document.querySelectorAll('.selforder-stage');
    if (!stages.length) return;
    for (var i = 0; i < stages.length; i++) {
      if (stages[i]._selforderAnim) continue;
      stages[i]._selforderAnim = true;
      initSelfOrder(stages[i]);
    }
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', boot);
  } else {
    boot();
  }
}());