/**
 * AKSRT Hero & Swiper Initialization
 */
(function () {
  "use strict";

  window.AksrtSwipers = { new: [], scroll: [], tab: [] };

  function initHeroSlider() {
    if (typeof Swiper === "undefined") return;

    // ===== Type A: .swiper-scroll =====
    document.querySelectorAll(".swiper-scroll:not(.swiper-initialized)").forEach(function (el, index) {
      var c_w = el.offsetWidth;
      var firstSlide = el.querySelector(".swiper-wrapper > *");
      var i_w = firstSlide ? firstSlide.offsetWidth : 200;
      var slidesPerGroup = Math.max(1, Math.floor(c_w / i_w));

      var option = {
        slidesPerView: "auto",
        freeMode: true,
        freeModeSticky: true,
        mousewheel: { forceToAxis: true },
        slidesPerGroup: slidesPerGroup,
        autoplay: el.dataset.autoplay ? {
          delay: parseInt(el.dataset.interval || "4000", 10),
          disableOnInteraction: false,
        } : false,
        loop: !!el.dataset.loop,
        navigation: {
          nextEl: el.querySelector(".swiper-button-next"),
          prevEl: el.querySelector(".swiper-button-prev"),
        },
      };

      el.classList.add("swiper-scroll-eq-" + index);
      el.setAttribute("swiper-scroll-index", String(index));
      window.AksrtSwipers.scroll[index] = new Swiper(el, option);
    });

    // ===== Type B: .swiper-tab =====
    document.querySelectorAll(".swiper-tab:not(.swiper-initialized)").forEach(function (el, index) {
      var speed = parseInt(el.dataset.speed || "0", 10) || Math.floor((el.offsetWidth + 1200) / 170) * 50;
      speed = Math.max(300, speed);

      var initialSlide = parseInt(el.getAttribute("active-index") || "0", 10);

      var option = {
        loop: false,
        initialSlide: initialSlide,
        autoHeight: true,
        spaceBetween: 20,
        autoplay: false,
        speed: speed,
        pagination: {
          el: el.querySelector(".swiper-pagination"),
          clickable: true,
        },
      };

      var tabId = el.getAttribute("swiper-tab");
      if (tabId) {
        var tabNav = document.querySelector('[swiper-tab-nav="' + tabId + '"]');
        if (tabNav && tabNav.swiper) {
          option.thumbs = {
            swiper: tabNav.swiper,
            autoScrollOffset: 2,
          };
        }
      }

      el.classList.add("swiper-tab-eq-" + index);
      el.setAttribute("swiper-tab-index", String(index));
      window.AksrtSwipers.tab[index] = new Swiper(el, option);
    });

    // ===== Type C: .new-swiper =====
    document.querySelectorAll(".new-swiper:not(.swiper-initialized)").forEach(function (el, index) {
      var delay = parseInt(el.dataset.interval || "6000", 10);
      var autoplay = el.dataset.autoplay !== undefined ? {
        delay: delay,
        disableOnInteraction: false,
      } : false;

      var speed = parseInt(el.dataset.speed || "0", 10) || Math.floor((el.offsetWidth + 1000) / 22) * 10;
      speed = Math.max(400, speed);
      if (!autoplay) speed = Math.floor(speed / 1.6);

      var loop = !!el.dataset.loop;
      var parallax = !!el.querySelector("[data-swiper-parallax],[data-swiper-parallax-scale]");
      var effect = el.dataset.effect || "slide";
      var direction = el.dataset.direction || "horizontal";
      var spaceBetween = parseInt(el.dataset.spaceBetween || "0", 10);
      var paginationType = el.dataset.paginationType || "bullets";
      var autoHeight = el.hasAttribute("auto-height");

      el.classList.add("swiper-new-eq-" + index);
      el.setAttribute("swiper-new-index", String(index));

      var swiperArgs = {
        loop: loop,
        autoHeight: autoHeight,
        direction: direction,
        spaceBetween: spaceBetween,
        parallax: parallax,
        effect: effect,
        lazy: { loadPrevNext: true },
        autoplay: autoplay,
        speed: speed,
        pagination: {
          el: el.querySelector(".swiper-pagination"),
          type: paginationType,
          clickable: true,
        },
        navigation: {
          nextEl: el.querySelector(".swiper-button-next"),
          prevEl: el.querySelector(".swiper-button-prev"),
        },
        keyboard: { enabled: true },
        a11y: { prevSlideMessage: "上一张", nextSlideMessage: "下一张" },
        on: {
          lazyImageReady: function (slideEl, imageEl) {
            if (imageEl) imageEl.classList.add("lazyloaded");
          },
          slideChange: function () {
            el.querySelectorAll(".aksrt-dplayer, video").forEach(function (media) {
              if (media.pause) media.pause();
              var dp = media.closest("[data-dplayer]");
              if (dp && dp._dplayer) dp._dplayer.pause();
            });
          },
          init: function () {
            if (loop) {
              el.querySelectorAll(".swiper-slide-duplicate img").forEach(function (img) {
                img.classList.add("no-imgbox");
              });
            }
          },
        },
      };

      if (paginationType === "thumbnail") {
        swiperArgs.pagination.type = "bullets";
        swiperArgs.pagination.bulletClass = "pagination-thumbnail-item";
        swiperArgs.pagination.bulletActiveClass = "pagination-thumbnail-item-active";
        swiperArgs.pagination.renderBullet = function (idx, className) {
          var slide = this.slides[idx];
          if (!slide) return "";
          var img = slide.querySelector("img");
          var src = img ? (img.dataset.src || img.src) : "";
          if (src) {
            return '<div class="' + className + '"><img class="aksrt-tilt-thumb" src="' + src + '"></div>';
          }
          return "";
        };
      }

      var swiperInstance = new Swiper(el, swiperArgs);
      window.AksrtSwipers.new[index] = swiperInstance;

      if (el.classList.contains("banner-module__swiper")) {
        var prevBtn = el.querySelector(".swiper-button-prev");
        var nextBtn = el.querySelector(".swiper-button-next");
        if (prevBtn) {
          prevBtn.addEventListener("click", function (e) {
            e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation();
            if (swiperInstance && !swiperInstance.destroyed) swiperInstance.slidePrev();
          }, true);
        }
        if (nextBtn) {
          nextBtn.addEventListener("click", function (e) {
            e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation();
            if (swiperInstance && !swiperInstance.destroyed) swiperInstance.slideNext();
          }, true);
        }
      }
    });

    // ===== Compat: data-swiper-config JSON =====
    document.querySelectorAll("[data-swiper-config]:not(.swiper-initialized):not(.new-swiper):not(.swiper-scroll):not(.swiper-tab)").forEach(function (el) {
      var config = {};
      try { config = JSON.parse(el.dataset.swiperConfig || "{}"); } catch (e) {}

      var paginationEl = el.querySelector(".swiper-pagination, .header-components__pagination");
      var prevBtn = el.querySelector(".swiper-button-prev");
      var nextBtn = el.querySelector(".swiper-button-next");

      var defaults = {
        effect: "fade",
        fadeEffect: { crossFade: true },
        loop: true,
        speed: 600,
        autoplay: { delay: 5000, disableOnInteraction: false },
        pagination: paginationEl ? { el: paginationEl, type: "progressbar" } : false,
        navigation: (prevBtn && nextBtn) ? { prevEl: prevBtn, nextEl: nextBtn } : false,
        keyboard: { enabled: true },
        a11y: { prevSlideMessage: "上一张", nextSlideMessage: "下一张" },
      };

      var finalConfig = Object.assign({}, defaults, config);
      if (config.pagination && typeof config.pagination === "object") {
        if (!config.pagination.el && paginationEl) config.pagination.el = paginationEl;
        finalConfig.pagination = Object.assign({}, defaults.pagination || {}, config.pagination);
      } else if (config.pagination === false) {
        finalConfig.pagination = false;
      }
      if (config.navigation === true && prevBtn && nextBtn) {
        finalConfig.navigation = { prevEl: prevBtn, nextEl: nextBtn };
      }

      new Swiper(el, finalConfig);
    });

    // Clickable slides
    document.querySelectorAll(".swiper-slide[data-link]").forEach(function (slide) {
      var link = slide.dataset.link;
      if (link && link !== "#") {
        slide.style.cursor = "pointer";
        slide.addEventListener("click", function (e) {
          if (e.target.closest(".header-components-search, .header-components-card, .hero__btn, .swiper-button-prev, .swiper-button-next, .swiper-pagination, .hero-search, a, button, input")) return;
          window.location.href = link;
        });
      }
    });

    // Legacy hero__slides fallback
    document.querySelectorAll(".hero__slides:not(.swiper-wrapper)").forEach(function (slider) {
      var slides = slider.querySelectorAll(".hero__slide");
      var dots = slider.querySelectorAll(".hero__dot");
      var prevBtn = slider.closest("section")?.querySelector(".hero__btn--prev");
      var nextBtn = slider.closest("section")?.querySelector(".hero__btn--next");
      if (!slides.length || slides.length <= 1) return;

      var autoplayInterval = parseInt(slider.dataset.autoplay || "5000", 10) || 5000;
      var pauseOnHover = slider.dataset.pauseOnHover === "true";
      var current = 0;
      var timer = null;
      var paused = false;

      function show(index) {
        index = ((index % slides.length) + slides.length) % slides.length;
        slides[current].classList.remove("active");
        if (dots[current]) dots[current].setAttribute("aria-selected", "false");
        current = index;
        slides[current].classList.add("active");
        if (dots[current]) dots[current].setAttribute("aria-selected", "true");
      }
      function next() { show(current + 1); }
      function prev() { show(current - 1); }
      function startAutoplay() { stopAutoplay(); timer = setInterval(next, autoplayInterval); }
      function stopAutoplay() { if (timer) clearInterval(timer); timer = null; }
      function restart() { if (!paused) { stopAutoplay(); startAutoplay(); } }

      show(0);
      if (nextBtn) nextBtn.addEventListener("click", function () { next(); restart(); });
      if (prevBtn) prevBtn.addEventListener("click", function () { prev(); restart(); });
      dots.forEach(function (dot, i) { dot.addEventListener("click", function () { show(i); restart(); }); });

      slider.setAttribute("tabindex", "-1");
      slider.addEventListener("keydown", function (e) {
        if (e.key === "ArrowRight") { next(); restart(); }
        else if (e.key === "ArrowLeft") { prev(); restart(); }
      });

      if (pauseOnHover) {
        slider.addEventListener("mouseenter", function () { paused = true; stopAutoplay(); });
        slider.addEventListener("mouseleave", function () { paused = false; startAutoplay(); });
      }

      slides.forEach(function (slide) {
        var link = slide.dataset.link;
        if (link && link !== "#") {
          slide.style.cursor = "pointer";
          slide.addEventListener("click", function () { window.location.href = link; });
        }
      });

      var touchStartX = 0;
      slider.addEventListener("touchstart", function (e) { touchStartX = e.changedTouches[0].screenX; stopAutoplay(); }, { passive: true });
      slider.addEventListener("touchend", function (e) {
        var diff = touchStartX - e.changedTouches[0].screenX;
        if (Math.abs(diff) > 50) { if (diff > 0) next(); else prev(); }
        startAutoplay();
      }, { passive: true });

      startAutoplay();
      document.addEventListener("visibilitychange", function () {
        if (document.hidden) stopAutoplay();
        else if (!paused) startAutoplay();
      });
    });
  }

  window.AksrtFrontend.register("aksrt-hero-slider", function () { initHeroSlider(); });
})();