/**
 * AKSRT Article Tools — password toggles, search clear, article actions, interaction bar
 */
(function () {
  "use strict";

  function initPasswordToggles(root) {
    (root || document).querySelectorAll(".toggle-pwd").forEach(function (btn) {
      if (btn.dataset.pwdToggleBound) return;
      btn.dataset.pwdToggleBound = "1";
      btn.addEventListener("click", function () {
        var id = btn.getAttribute("data-target");
        var input = id ? document.getElementById(id) : null;
        if (!input) return;
        var show = input.getAttribute("type") === "password";
        input.setAttribute("type", show ? "text" : "password");
        btn.setAttribute("aria-label", show ? "隐藏密码" : "显示密码");
      });
    });
  }

  function initSearchClear() {
    var btn = document.getElementById("search-clear-btn");
    var input = document.getElementById("search-page-input");

    if (btn && input && !btn.dataset.aksrtSearchClearBound) {
      btn.dataset.aksrtSearchClearBound = "1";
      var syncClearButton = function () {
        var hasValue = input.value.trim().length > 0;
        btn.classList.toggle("is-visible", hasValue);
        btn.hidden = !hasValue;
      };

      btn.addEventListener("click", function () {
        input.value = "";
        input.focus();
        syncClearButton();
      });

      input.addEventListener("input", syncClearButton);
      syncClearButton();
    }

    var categorySelect = document.getElementById("search-category-filter");
    if (categorySelect) {
      categorySelect.addEventListener("change", function () {
        var url = new URL(window.location.href);
        if (this.value) {
          url.searchParams.set("aksrt_category", this.value);
        } else {
          url.searchParams.delete("aksrt_category");
        }
        if (url.searchParams.get("aksrt_search_type") && url.searchParams.get("aksrt_search_type") !== "post") {
          url.searchParams.delete("aksrt_category");
        }
        url.searchParams.delete("paged");
        window.location.href = url.toString();
      });
    }
  }

  function initArticleTools() {
    var buttons = document.querySelectorAll("[data-article-tool]");
    if (!buttons.length) return;

    buttons.forEach(function (button) {
      if (button.dataset.aksrtArticleToolBound) return;
      button.dataset.aksrtArticleToolBound = "1";
      button.addEventListener("click", function () {
        var tool = button.getAttribute("data-article-tool");
        if (tool === "print") {
          window.print();
          return;
        }

        if (tool === "pdf") {
          window.print();
          notyf("请在打印对话框中选择“另存为 PDF”", "info");
        }
      });
    });
  }

  var postMetaDocumentEventsBound = false;

  function setPostMetaMenuState(menuRoot, open) {
    var toggle = menuRoot.querySelector(".post-drop-meta__toggle");
    var menu = menuRoot.querySelector(".post-drop-meta__menu");
    if (!toggle || !menu) return;

    menuRoot.classList.toggle("is-open", open);
    toggle.setAttribute("aria-expanded", open ? "true" : "false");
    menu.setAttribute("aria-hidden", open ? "false" : "true");
  }

  function closePostMetaMenus(except, restoreFocus) {
    document.querySelectorAll(".post-drop-meta.is-open").forEach(function (menuRoot) {
      if (menuRoot === except) return;
      var toggle = menuRoot.querySelector(".post-drop-meta__toggle");
      setPostMetaMenuState(menuRoot, false);
      if (restoreFocus && toggle) toggle.focus();
    });
  }

  function initPostMetaMenus(root) {
    var scope = root || document;
    var menuRoots = [];

    if (scope.nodeType === 1 && scope.matches(".post-drop-meta")) {
      menuRoots.push(scope);
    }
    scope.querySelectorAll(".post-drop-meta").forEach(function (menuRoot) {
      menuRoots.push(menuRoot);
    });

    menuRoots.forEach(function (menuRoot) {
      var toggle = menuRoot.querySelector(".post-drop-meta__toggle");
      var menu = menuRoot.querySelector(".post-drop-meta__menu");
      if (!toggle || !menu || toggle.dataset.postMetaMenuBound) return;

      toggle.dataset.postMetaMenuBound = "1";
      setPostMetaMenuState(menuRoot, false);

      toggle.addEventListener("click", function () {
        var open = !menuRoot.classList.contains("is-open");
        closePostMetaMenus(menuRoot, false);
        setPostMetaMenuState(menuRoot, open);
      });

      menu.addEventListener("click", function (event) {
        if (event.target.closest(".post-drop-meta__item")) {
          setPostMetaMenuState(menuRoot, false);
        }
      });
    });

    if (menuRoots.length && !postMetaDocumentEventsBound) {
      postMetaDocumentEventsBound = true;
      document.addEventListener("click", function (event) {
        if (!event.target.closest(".post-drop-meta")) {
          closePostMetaMenus(null, false);
        }
      });
      document.addEventListener("keydown", function (event) {
        if (event.key === "Escape") {
          closePostMetaMenus(null, true);
        }
      });
    }
  }

  function getBaseStatCount(statName) {
    var statEl = document.querySelector('[data-stat-count="' + statName + '"][data-base-count]');
    return statEl ? (parseInt(statEl.dataset.baseCount, 10) || 0) : 0;
  }

  function updateStatCounts(statName, count) {
    var safeCount = Math.max(0, count);
    document.querySelectorAll('[data-stat-count="' + statName + '"]').forEach(function (statEl) {
      statEl.textContent = String(safeCount);
    });
  }

  function setBaseStatCount(statName, count) {
    var safeCount = Math.max(0, count);
    document.querySelectorAll('[data-stat-count="' + statName + '"][data-base-count]').forEach(function (statEl) {
      statEl.dataset.baseCount = String(safeCount);
    });
    updateStatCounts(statName, safeCount);
  }

  function requestInteraction(actionName, postId, active) {
    if (!window.aksrtData || !aksrtData.ajaxUrl || !aksrtData.nonce) {
      return Promise.reject(new Error("互动服务未配置"));
    }

    var body = new URLSearchParams();
    body.set("action", actionName);
    body.set("nonce", aksrtData.nonce);
    body.set("postId", String(postId));
    body.set("active", active ? "1" : "0");

    return fetch(aksrtData.ajaxUrl, {
      method: "POST",
      headers: { "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" },
      credentials: "same-origin",
      body: body.toString()
    }).then(function (response) {
      return response.json().catch(function () {
        throw new Error("服务器返回无效响应");
      });
    }).then(function (payload) {
      if (!payload || !payload.success) {
        var message = payload && payload.data && payload.data.message ? payload.data.message : "请求失败";
        throw new Error(message);
      }
      return payload.data || {};
    });
  }

  function setButtonBusy(button, busy) {
    button.disabled = !!busy;
    button.classList.toggle("is-loading", !!busy);
  }

  function findInScope(scope, id) {
    scope = scope || document;
    if (!scope) return null;
    if (scope.nodeType === 9) {
      return scope.getElementById(id);
    }
    if (scope.nodeType === 1) {
      if (scope.id === id) return scope;
      return typeof scope.querySelector === "function"
        ? scope.querySelector("#" + id)
        : null;
    }
    return null;
  }

  function collectActionButtons(scope, selector) {
    scope = scope || document;
    var list = [];
    if (!scope) return list;
    if (scope.nodeType === 1 && scope.matches && scope.matches(selector)) {
      list.push(scope);
    }
    if (typeof scope.querySelectorAll === "function") {
      var found = scope.querySelectorAll(selector);
      for (var i = 0; i < found.length; i++) list.push(found[i]);
    } else if (scope.nodeType === 9) {
      var all = document.querySelectorAll(selector);
      for (var j = 0; j < all.length; j++) list.push(all[j]);
    }
    // also keep legacy id hooks
    var legacyId = selector.indexOf("action-like") >= 0 ? "action-like" : (selector.indexOf("action-favorite") >= 0 ? "action-favorite" : "");
    if (legacyId) {
      var legacy = findInScope(scope, legacyId);
      if (legacy && list.indexOf(legacy) === -1) list.push(legacy);
    }
    return list;
  }

  function initInteractionBar(root) {
    var scope = root || document;
    // Bind all like/favorite controls (in-content + footer tabbar extend).
    var likeBtns = collectActionButtons(scope, ".action-like[data-post-id]");
    var favBtns = collectActionButtons(scope, ".action-favorite[data-post-id]");

    function paintLike(btn, isActive, animate) {
      btn.dataset.initialActive = isActive ? "1" : "0";
      // actived 为参考主题的选中态类名；action-animation 只在点亮瞬间附加，
      // 触发 main.css 中的 lovestar 关键帧。
      btn.classList.toggle("actived", isActive);
      btn.classList.toggle("action-animation", !!(isActive && animate));
    }

    function paintFavorite(btn, isActive, animate) {
      btn.dataset.initialActive = isActive ? "1" : "0";
      btn.classList.toggle("actived", isActive);
      btn.classList.toggle("action-animation", !!(isActive && animate));
    }

    function applyLikeState(isActive, count, animate) {
      for (var i = 0; i < likeBtns.length; i++) paintLike(likeBtns[i], isActive, animate);
      if ("number" === typeof count && !isNaN(count)) {
        setBaseStatCount("likes", count);
      } else {
        updateStatCounts("likes", getBaseStatCount("likes"));
      }
    }

    function applyFavoriteState(isActive, count, animate) {
      for (var i = 0; i < favBtns.length; i++) paintFavorite(favBtns[i], isActive, animate);
      if ("number" === typeof count && !isNaN(count)) {
        setBaseStatCount("favorites", count);
      } else {
        updateStatCounts("favorites", getBaseStatCount("favorites"));
      }
    }

    if (likeBtns.length) {
      var seedLike = likeBtns[0];
      if (!seedLike.dataset.aksrtInteractionBound) {
        applyLikeState(seedLike.dataset.initialActive === "1", getBaseStatCount("likes"));
        likeBtns.forEach(function (likeBtn) {
          if (likeBtn.dataset.aksrtInteractionBound) return;
          likeBtn.dataset.aksrtInteractionBound = "1";
          likeBtn.addEventListener("click", function () {
            var postId = likeBtn.dataset.postId ? String(likeBtn.dataset.postId) : "";
            if (!postId || likeBtn.disabled) return;
            var nextState = likeBtn.dataset.initialActive !== "1";
            setButtonBusy(likeBtn, true);
            requestInteraction("aksrt_toggle_like", postId, nextState).then(function (data) {
              applyLikeState(!!data.active, parseInt(data.count, 10) || 0, true);
              notyf(data.active ? "感谢你的点赞" : "已取消点赞", "success");
            }).catch(function (error) {
              notyf(error && error.message ? error.message : "点赞失败", "danger");
            }).finally(function () {
              setButtonBusy(likeBtn, false);
            });
          });
        });
      }
    }

    if (favBtns.length) {
      var seedFav = favBtns[0];
      if (!seedFav.dataset.aksrtInteractionBound) {
        applyFavoriteState(seedFav.dataset.initialActive === "1", getBaseStatCount("favorites"));
        favBtns.forEach(function (favBtn) {
          if (favBtn.dataset.aksrtInteractionBound) return;
          favBtn.dataset.aksrtInteractionBound = "1";
          favBtn.addEventListener("click", function () {
            var postId = favBtn.dataset.postId ? String(favBtn.dataset.postId) : "";
            if (!postId || favBtn.disabled) return;
            var nextState = favBtn.dataset.initialActive !== "1";
            setButtonBusy(favBtn, true);
            requestInteraction("aksrt_toggle_favorite", postId, nextState).then(function (data) {
              applyFavoriteState(!!data.active, parseInt(data.count, 10) || 0, true);
              notyf(data.active ? "收藏成功" : "已取消收藏", "success");
            }).catch(function (error) {
              notyf(error && error.message ? error.message : "收藏失败", "danger");
            }).finally(function () {
              setButtonBusy(favBtn, false);
            });
          });
        });
      }
    }
  }

  function init(root) {
    initSearchClear();
    initArticleTools();
    initPostMetaMenus(root);
    initPasswordToggles(root);
    initInteractionBar(root);
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", function () { init(); });
  } else {
    init();
  }
  // AJAX 注入新内容后由 auto_fun 重扫（各 init 均带 data 标记，重复调用幂等）。
  if (window.jQuery) {
    window.jQuery(document).off("auto_fun.aksrt-article").on("auto_fun.aksrt-article", function () { init(); });
  }
})();