/**
 * AKSRT Enhancements Part 2 — 高级交互组件
 *
 * 包含：3D 悬停倾斜、滚动触发动画、封面轮播、打赏按钮
 *
 * @package AKSRT
 */

(function () {
  'use strict';

  var animateObserver = null;
  var rippleBound = false;
  var stickyScrollBound = false;
  var parallaxScrollBound = false;
  var modalBound = false;
  var stickyElements = [];
  var parallaxElements = [];
  var parallaxTicking = false;

  function scopeFor(root) {
    return root && root.querySelectorAll ? root : document;
  }

  function eachMatch(root, selector, callback) {
    var scope = scopeFor(root);
    if (scope.nodeType === 1 && scope.matches(selector)) callback(scope);
    scope.querySelectorAll(selector).forEach(callback);
  }

  function initTilt(root) {
    eachMatch(root, '[data-aksrt-tilt]', function (el) {
      if (el.dataset.tiltInit) return;
      el.dataset.tiltInit = '1';

      var maxTilt = parseInt(el.dataset.aksrtTiltMax || '15', 10);
      var perspective = parseInt(el.dataset.aksrtTiltPerspective || '1000', 10);
      var scale = parseFloat(el.dataset.aksrtTiltScale || '1.03');
      var speed = parseInt(el.dataset.aksrtTiltSpeed || '400', 10);
      var glare = el.dataset.aksrtTiltGlare === '1';

      el.style.transformStyle = 'preserve-3d';
      el.style.transition = 'transform ' + speed + 'ms ease';

      var glareEl = null;
      if (glare) {
        glareEl = document.createElement('div');
        glareEl.style.cssText = 'position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity ' + speed + 'ms;';
        el.style.position = el.style.position || 'relative';
        el.style.overflow = 'hidden';
        el.appendChild(glareEl);
      }

      el.addEventListener('mousemove', function (e) {
        var rect = el.getBoundingClientRect();
        var x = (e.clientX - rect.left) / rect.width;
        var y = (e.clientY - rect.top) / rect.height;
        var tiltX = (0.5 - y) * maxTilt;
        var tiltY = (x - 0.5) * maxTilt;

        el.style.transform = 'perspective(' + perspective + 'px) rotateX(' + tiltX + 'deg) rotateY(' + tiltY + 'deg) scale3d(' + scale + ',' + scale + ',' + scale + ')';

        if (glareEl) {
          glareEl.style.opacity = '1';
          glareEl.style.background = 'linear-gradient(135deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0) 100%)';
          glareEl.style.transform = 'translate(' + ((x - 0.5) * 100) + '%, ' + ((y - 0.5) * 100) + '%)';
        }
      });

      el.addEventListener('mouseleave', function () {
        el.style.transform = 'perspective(' + perspective + 'px) rotateX(0deg) rotateY(0deg) scale3d(1,1,1)';
        if (glareEl) glareEl.style.opacity = '0';
      });
    });
  }

  function prepareAnimation(el) {
    if (el.dataset.aksrtAnimateBound === '1') return;
    el.dataset.aksrtAnimateBound = '1';
    var animation = el.dataset.aksrtAnimate || 'fadeInUp';
    el.style.opacity = '0';
    switch (animation) {
      case 'fadeIn': el.style.transform = 'none'; break;
      case 'fadeInUp': el.style.transform = 'translateY(30px)'; break;
      case 'fadeInDown': el.style.transform = 'translateY(-30px)'; break;
      case 'fadeInLeft': el.style.transform = 'translateX(-30px)'; break;
      case 'fadeInRight': el.style.transform = 'translateX(30px)'; break;
      case 'zoomIn': el.style.transform = 'scale(0.9)'; break;
      default: el.style.transform = 'translateY(30px)';
    }
    animateObserver.observe(el);
  }

  function initScrollAnimations(root) {
    if (!('IntersectionObserver' in window)) {
      eachMatch(root, '[data-aksrt-animate]', function (el) {
        el.style.opacity = '1';
        el.style.transform = 'none';
      });
      return;
    }

    if (!animateObserver) {
      animateObserver = new IntersectionObserver(function (entries) {
        entries.forEach(function (entry) {
          if (!entry.isIntersecting) return;
          var el = entry.target;
          var delay = parseInt(el.dataset.aksrtAnimateDelay || '0', 10);
          var duration = parseInt(el.dataset.aksrtAnimateDuration || '600', 10);
          animateObserver.unobserve(el);
          window.setTimeout(function () {
            el.style.transition = 'opacity ' + duration + 'ms ease, transform ' + duration + 'ms ease';
            el.style.opacity = '1';
            el.style.transform = 'translateY(0) translateX(0) scale(1)';
            el.classList.add('aksrt-animated');
          }, delay);
        });
      }, { threshold: 0.1, rootMargin: '0px 0px -50px 0px' });
    }

    eachMatch(root, '[data-aksrt-animate]', prepareAnimation);
  }

  function updateSticky() {
    stickyElements = stickyElements.filter(function (el) { return document.documentElement.contains(el); });
    stickyElements.forEach(function (el) {
      var top = parseInt(el.dataset.aksrtStickyTop || '80', 10);
      var parent = el.parentElement;
      if (!parent) return;
      var parentRect = parent.getBoundingClientRect();
      if (parentRect.top < top && parentRect.bottom > el.offsetHeight + top) {
        el.style.position = 'sticky';
        el.style.top = top + 'px';
      }
    });
  }

  function initSticky(root) {
    eachMatch(root, '[data-aksrt-sticky]', function (el) {
      if (el.dataset.aksrtStickyBound === '1') return;
      el.dataset.aksrtStickyBound = '1';
      stickyElements.push(el);
    });
    if (!stickyScrollBound) {
      stickyScrollBound = true;
      window.addEventListener('scroll', updateSticky, { passive: true });
    }
    updateSticky();
  }

  function updateParallax() {
    parallaxElements = parallaxElements.filter(function (el) { return document.documentElement.contains(el); });
    parallaxElements.forEach(function (el) {
      var speed = parseFloat(el.dataset.aksrtParallax || '0.3');
      var rect = el.getBoundingClientRect();
      var center = rect.top + rect.height / 2;
      var offset = (center - window.innerHeight / 2) * speed;
      el.style.transform = 'translateY(' + offset + 'px)';
    });
    parallaxTicking = false;
  }

  function initParallax(root) {
    eachMatch(root, '[data-aksrt-parallax]', function (el) {
      if (el.dataset.aksrtParallaxBound === '1') return;
      el.dataset.aksrtParallaxBound = '1';
      parallaxElements.push(el);
    });
    if (!parallaxScrollBound) {
      parallaxScrollBound = true;
      window.addEventListener('scroll', function () {
        if (parallaxTicking) return;
        parallaxTicking = true;
        requestAnimationFrame(updateParallax);
      }, { passive: true });
    }
    updateParallax();
  }

  function initRipple(root, reason) {
    if (rippleBound) return;
    rippleBound = true;
    document.addEventListener('click', function (e) {
      var el = e.target.closest('.aksrt-ripple');
      if (!el) return;
      var rect = el.getBoundingClientRect();
      var size = Math.max(rect.width, rect.height) * 2;
      var wave = document.createElement('span');
      wave.className = 'aksrt-ripple__wave';
      wave.style.width = wave.style.height = size + 'px';
      wave.style.left = (e.clientX - rect.left - size / 2) + 'px';
      wave.style.top = (e.clientY - rect.top - size / 2) + 'px';
      el.appendChild(wave);
      wave.addEventListener('animationend', function () { wave.remove(); });
    });
  }

  function initFloatLabels(root) {
    eachMatch(root, '.aksrt-float-label__input', function (input) {
      if (input.value) input.setAttribute('data-has-value', '1');
      if (input.dataset.aksrtFloatLabelBound === '1') return;
      input.dataset.aksrtFloatLabelBound = '1';
      input.addEventListener('input', function () {
        if (this.value) this.setAttribute('data-has-value', '1');
        else this.removeAttribute('data-has-value');
      });
    });
  }

  function initSigninCalendar(root) {
    eachMatch(root, '[data-aksrt-signin-calendar]', function (calendar) {
      if (calendar.dataset.aksrtSigninCalendarBound === '1') return;
      calendar.dataset.aksrtSigninCalendarBound = '1';
      var data = [];
      try { data = JSON.parse(calendar.dataset.aksrtSigninCalendar || '[]'); } catch (e) {}
      var today = new Date();
      var html = '<div class="aksrt-signin-calendar__grid">';
      for (var i = 29; i >= 0; i--) {
        var d = new Date(today);
        d.setDate(d.getDate() - i);
        var dateStr = d.toISOString().split('T')[0];
        var isSigned = data.indexOf(dateStr) !== -1;
        html += '<div class="aksrt-signin-calendar__day' + (isSigned ? ' is-signed' : '') + (i === 0 ? ' is-today' : '') +
          '" title="' + dateStr + (isSigned ? ' ✓' : '') + '"><span>' + d.getDate() + '</span></div>';
      }
      calendar.innerHTML = html + '</div>';
    });
  }

  function bindModalLifecycle() {
    if (modalBound) return;
    modalBound = true;
    document.addEventListener('aksrt:modal:open', function (event) {
      var root = event.target && event.target.querySelectorAll ? event.target : document;
      window.setTimeout(function () { initSigninCalendar(root); }, 30);
    });
  }

  function init(root, reason) {
    initTilt(root);
    initScrollAnimations(root);
    initRipple(root, reason);
    initSticky(root);
    initParallax(root);
    initFloatLabels(root);
    initSigninCalendar(root);
    bindModalLifecycle();
  }

  window.AksrtFrontend.register('aksrt-enhancements-advanced', init);

  window.AksrtEnhancements = {
    initTilt: initTilt,
    initScrollAnimations: initScrollAnimations,
    initRipple: initRipple,
  };
})();