/**
 * AKSRT Misc — related swiper, slide covers, hidden content
 */
(function () {
  "use strict";

  var globalsBound = 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 renderGradientBackground(container) {
    if (!container || container.dataset.aksrtGradientState || typeof window.Grade !== "function") return;

    var source = container.querySelector("img");
    if (!source || (!source.classList.contains("lazyloaded") && !(source.complete && source.naturalWidth > 0))) return;

    container.dataset.aksrtGradientState = "loading";
    window.Grade(container, null, function (result) {
      var gradientData = result && result[0];
      var colors = gradientData && gradientData.gradientData;
      if (!gradientData || !colors || !colors[0] || !colors[1]) {
        delete container.dataset.aksrtGradientState;
        return;
      }

      var opacity = container.getAttribute("data-opacity");
      var colorName = opacity ? "rgba" : "rgb";
      var alpha = opacity ? "," + opacity : "";
      var color1 = colorName + "(" + colors[0].rgba.slice(0, 3).join(",") + alpha + ") 10%";
      var color2 = colorName + "(" + colors[1].rgba.slice(0, 3).join(",") + alpha + ") 80%";

      gradientData.element.classList.add("gradient-bg-loaded");
      gradientData.element.style.backgroundImage = "linear-gradient(135deg, " + color1 + ", " + color2 + ")";
      container.dataset.aksrtGradientState = "loaded";
    });
  }

  function initGradientBackgrounds(root) {
    eachMatch(root, ".gradient-bg", renderGradientBackground);
  }

  function initPostThumbMedia(root) {
    eachMatch(root, "[data-post-thumb-video]", function (box) {
      if (box.dataset.aksrtThumbVideoBound === "1") return;
      var video = box.querySelector("video");
      if (!video) return;
      box.dataset.aksrtThumbVideoBound = "1";

      function loadVideo() {
        if (!video.getAttribute("src") && video.dataset.src) {
          video.setAttribute("src", video.dataset.src);
          video.load();
        }
      }

      function playVideo() {
        loadVideo();
        var result = video.play();
        var postItem = box.closest(".posts-item");
        if (postItem) postItem.classList.add("thumb-dplayer-playing");
        if (result && typeof result.catch === "function") result.catch(function () {});
      }

      function pauseVideo() {
        video.pause();
        var postItem = box.closest(".posts-item");
        if (postItem) postItem.classList.remove("thumb-dplayer-playing");
      }

      var item = box.closest(".item-thumbnail") || box;
      item.addEventListener("mouseenter", playVideo);
      item.addEventListener("mouseleave", pauseVideo);
      item.addEventListener("focusin", playVideo);
      item.addEventListener("focusout", pauseVideo);
    });
  }

  function initSlideCovers(root) {
    eachMatch(root, ".single-cover--slide", function (cover) {
      if (cover.dataset.aksrtSlideCoverBound === "1") return;
      var slides = cover.querySelectorAll(".single-cover__slide");
      var dots = cover.querySelectorAll(".single-cover__dot");
      if (slides.length < 2) return;
      cover.dataset.aksrtSlideCoverBound = "1";

      var current = 0;
      var interval = 5000;
      var timer = null;

      function goTo(idx) {
        slides[current].classList.remove("is-active");
        if (dots[current]) dots[current].classList.remove("is-active");
        current = idx;
        slides[current].classList.add("is-active");
        if (dots[current]) dots[current].classList.add("is-active");
      }

      function startTimer() {
        timer = window.setInterval(function () {
          goTo((current + 1) % slides.length);
        }, interval);
      }

      startTimer();
      dots.forEach(function (dot, i) {
        dot.addEventListener("click", function () {
          window.clearInterval(timer);
          goTo(i);
          startTimer();
        });
      });
    });
  }

  function bindGlobals() {
    if (globalsBound) return;
    globalsBound = true;

    document.addEventListener("lazyloaded", function (event) {
      if (!(event.target instanceof Element) || !event.target.matches(".gradient-bg img")) return;
      renderGradientBackground(event.target.closest(".gradient-bg"));
    }, true);

    document.addEventListener("click", function (e) {
      var btn = e.target.closest(".aksrt-hidden-content__submit-btn");
      if (!btn) return;

      e.preventDefault();
      var wrapper = btn.closest(".aksrt-hidden-content--locked");
      if (!wrapper) return;

      var mode = wrapper.getAttribute("data-aksrt-visibility-mode");
      var pid = wrapper.getAttribute("data-aksrt-visibility-pid");
      var input = wrapper.querySelector(".aksrt-hidden-content__password-input");
      var password = input ? input.value.trim() : "";

      if (mode === "password" && !password) {
        if (input) input.focus();
        return;
      }

      var formData = new FormData();
      formData.append("action", "aksrt_check_visibility");
      formData.append("_nonce", (window.aksrtData && window.aksrtData.visibilityNonce) || "");
      formData.append("mode", mode);
      formData.append("pid", pid);
      if (password) formData.append("password", password);

      btn.disabled = true;
      btn.textContent = "...";

      fetch((window.aksrtData && window.aksrtData.ajaxUrl) || "/wp-admin/admin-ajax.php", {
        method: "POST",
        body: formData,
        credentials: "same-origin",
      })
        .then(function (res) { return res.json(); })
        .then(function (data) {
          if (data.success) {
            window.location.reload();
          } else {
            var msg = (data.data && data.data.message) ? data.data.message : "验证失败";
            alert(msg);
            btn.disabled = false;
            btn.textContent = "验证";
          }
        })
        .catch(function () {
          alert("网络错误，请重试");
          btn.disabled = false;
          btn.textContent = "验证";
        });
    });

    document.addEventListener("keydown", function (e) {
      if (e.key !== "Enter" || !e.target.classList.contains("aksrt-hidden-content__password-input")) return;
      e.preventDefault();
      var wrapper = e.target.closest(".aksrt-hidden-content--locked");
      var btn = wrapper ? wrapper.querySelector(".aksrt-hidden-content__submit-btn") : null;
      if (btn) btn.click();
    });
  }

  window.AksrtFrontend.register("aksrt-misc", function (root, reason) {
    bindGlobals();
    initPostThumbMedia(root);
    initGradientBackgrounds(root);
    initSlideCovers(root);
  });
})();