(function () {
  "use strict";

  const SIDEBAR_COLLAPSE_STORAGE_PREFIX = "tarot-sidebar-collapsed:";
  const DETAIL_COLLAPSE_STORAGE_PREFIX = "tarot-detail-collapsed:";
  const DEFAULT_DATASET_ENTRY_COLLAPSED = true;
  const DEFAULT_DATASET_DETAIL_COLLAPSED = false;

  function loadSidebarCollapsedState(storageKey) {
    try {
      const raw = window.localStorage?.getItem(storageKey);
      if (raw === "1") {
        return true;
      }
      if (raw === "0") {
        return false;
      }
      return null;
    } catch {
      return null;
    }
  }

  function saveSidebarCollapsedState(storageKey, collapsed) {
    try {
      window.localStorage?.setItem(storageKey, collapsed ? "1" : "0");
    } catch {
      // Ignore storage failures silently.
    }
  }

  function initializeSidebarPopouts() {
    const layouts = document.querySelectorAll(".planet-layout, .tarot-layout, .kab-layout");

    layouts.forEach((layout, index) => {
      if (!(layout instanceof HTMLElement)) {
        return;
      }

      const panel = Array.from(layout.children).find((child) => (
        child instanceof HTMLElement
        && child.matches("aside.planet-list-panel, aside.tarot-list-panel, aside.kab-tree-panel")
      ));

      if (!(panel instanceof HTMLElement) || panel.dataset.sidebarPopoutReady === "1") {
        return;
      }

      const header = panel.querySelector(".planet-list-header, .tarot-list-header");
      if (!(header instanceof HTMLElement)) {
        return;
      }

      panel.dataset.sidebarPopoutReady = "1";

      const sectionId = layout.closest("section")?.id || `layout-${index + 1}`;
      const panelId = panel.id || `${sectionId}-entry-panel`;
      panel.id = panelId;

      const storageKey = `${SIDEBAR_COLLAPSE_STORAGE_PREFIX}${sectionId}`;

      const collapseBtn = document.createElement("button");
      collapseBtn.type = "button";
      collapseBtn.className = "sidebar-toggle-inline";
      collapseBtn.textContent = "Hide Panel";
      collapseBtn.setAttribute("aria-label", "Hide entry panel");
      collapseBtn.setAttribute("aria-controls", panelId);
      header.appendChild(collapseBtn);

      const openBtn = document.createElement("button");
      openBtn.type = "button";
      openBtn.className = "sidebar-popout-open";
      openBtn.textContent = "Show Panel";
      openBtn.setAttribute("aria-label", "Show entry panel");
      openBtn.setAttribute("aria-controls", panelId);
      openBtn.hidden = true;
      layout.appendChild(openBtn);

      const applyCollapsedState = (collapsed, persist = true) => {
        layout.classList.toggle("layout-sidebar-collapsed", collapsed);
        collapseBtn.setAttribute("aria-expanded", collapsed ? "false" : "true");
        openBtn.setAttribute("aria-expanded", collapsed ? "false" : "true");
        openBtn.hidden = !collapsed;

        if (persist) {
          saveSidebarCollapsedState(storageKey, collapsed);
        }
      };

      collapseBtn.addEventListener("click", () => {
        applyCollapsedState(true);
      });

      openBtn.addEventListener("click", () => {
        applyCollapsedState(false);
      });

      const storedCollapsed = loadSidebarCollapsedState(storageKey);
      applyCollapsedState(storedCollapsed == null ? DEFAULT_DATASET_ENTRY_COLLAPSED : storedCollapsed, false);
    });
  }

  function initializeDetailPopouts() {
    const layouts = document.querySelectorAll(".planet-layout, .tarot-layout, .kab-layout");

    layouts.forEach((layout, index) => {
      if (!(layout instanceof HTMLElement)) {
        return;
      }

      const detailPanel = Array.from(layout.children).find((child) => (
        child instanceof HTMLElement
        && child.matches("section.planet-detail-panel, section.tarot-detail-panel, section.kab-detail-panel")
      ));

      if (!(detailPanel instanceof HTMLElement) || detailPanel.dataset.detailPopoutReady === "1") {
        return;
      }

      const heading = detailPanel.querySelector(".planet-detail-heading, .tarot-detail-heading");
      if (!(heading instanceof HTMLElement)) {
        return;
      }

      detailPanel.dataset.detailPopoutReady = "1";

      const sectionId = layout.closest("section")?.id || `layout-${index + 1}`;
      const panelId = detailPanel.id || `${sectionId}-detail-panel`;
      detailPanel.id = panelId;

      const detailStorageKey = `${DETAIL_COLLAPSE_STORAGE_PREFIX}${sectionId}`;
      const sidebarStorageKey = `${SIDEBAR_COLLAPSE_STORAGE_PREFIX}${sectionId}`;

      const collapseBtn = document.createElement("button");
      collapseBtn.type = "button";
      collapseBtn.className = "detail-toggle-inline";
      collapseBtn.textContent = "Hide Detail";
      collapseBtn.setAttribute("aria-label", "Hide detail panel");
      collapseBtn.setAttribute("aria-controls", panelId);
      heading.appendChild(collapseBtn);

      const openBtn = document.createElement("button");
      openBtn.type = "button";
      openBtn.className = "detail-popout-open";
      openBtn.textContent = "Show Detail";
      openBtn.setAttribute("aria-label", "Show detail panel");
      openBtn.setAttribute("aria-controls", panelId);
      openBtn.hidden = true;
      layout.appendChild(openBtn);

      const applyCollapsedState = (collapsed, persist = true) => {
        if (collapsed && layout.classList.contains("layout-sidebar-collapsed")) {
          layout.classList.remove("layout-sidebar-collapsed");
          const sidebarOpenBtn = layout.querySelector(".sidebar-popout-open");
          if (sidebarOpenBtn instanceof HTMLButtonElement) {
            sidebarOpenBtn.hidden = true;
            sidebarOpenBtn.setAttribute("aria-expanded", "true");
          }
          const sidebarCollapseBtn = layout.querySelector(".sidebar-toggle-inline");
          if (sidebarCollapseBtn instanceof HTMLButtonElement) {
            sidebarCollapseBtn.setAttribute("aria-expanded", "true");
          }
          saveSidebarCollapsedState(sidebarStorageKey, false);
        }

        layout.classList.toggle("layout-detail-collapsed", collapsed);
        collapseBtn.setAttribute("aria-expanded", collapsed ? "false" : "true");
        openBtn.setAttribute("aria-expanded", collapsed ? "false" : "true");
        openBtn.hidden = !collapsed;

        if (persist) {
          saveSidebarCollapsedState(detailStorageKey, collapsed);
        }
      };

      collapseBtn.addEventListener("click", () => {
        applyCollapsedState(true);
      });

      openBtn.addEventListener("click", () => {
        applyCollapsedState(false);
      });

      const storedCollapsed = loadSidebarCollapsedState(detailStorageKey);
      const shouldForceOpenForTarot = sectionId === "tarot-section";
      const initialCollapsed = shouldForceOpenForTarot
        ? false
        : (storedCollapsed == null ? DEFAULT_DATASET_DETAIL_COLLAPSED : storedCollapsed);
      applyCollapsedState(initialCollapsed, false);
    });
  }

  function setTopbarDropdownOpen(dropdownEl, isOpen) {
    if (!(dropdownEl instanceof HTMLElement)) {
      return;
    }

    dropdownEl.classList.toggle("is-open", Boolean(isOpen));
    const trigger = dropdownEl.querySelector("button[aria-haspopup='menu']");
    if (trigger) {
      trigger.setAttribute("aria-expanded", isOpen ? "true" : "false");
    }
  }

  function closeTopbarDropdowns(exceptEl = null) {
    const topbarDropdownEls = Array.from(document.querySelectorAll(".topbar-dropdown"));
    topbarDropdownEls.forEach((dropdownEl) => {
      if (exceptEl && dropdownEl === exceptEl) {
        return;
      }
      setTopbarDropdownOpen(dropdownEl, false);
    });
  }

  function bindTopbarDropdownInteractions() {
    const topbarDropdownEls = Array.from(document.querySelectorAll(".topbar-dropdown"));
    if (!topbarDropdownEls.length) {
      return;
    }

    topbarDropdownEls.forEach((dropdownEl) => {
      const trigger = dropdownEl.querySelector("button[aria-haspopup='menu']");
      if (!(trigger instanceof HTMLElement)) {
        return;
      }

      setTopbarDropdownOpen(dropdownEl, false);

      dropdownEl.addEventListener("mouseenter", () => {
        setTopbarDropdownOpen(dropdownEl, true);
      });

      dropdownEl.addEventListener("mouseleave", () => {
        setTopbarDropdownOpen(dropdownEl, false);
      });

      dropdownEl.addEventListener("focusout", (event) => {
        const nextTarget = event.relatedTarget;
        if (!(nextTarget instanceof Node) || !dropdownEl.contains(nextTarget)) {
          setTopbarDropdownOpen(dropdownEl, false);
        }
      });

      trigger.addEventListener("click", (event) => {
        event.stopPropagation();
        const nextOpen = !dropdownEl.classList.contains("is-open");
        closeTopbarDropdowns(dropdownEl);
        setTopbarDropdownOpen(dropdownEl, nextOpen);
      });

      const menuItems = dropdownEl.querySelectorAll(".topbar-dropdown-menu [role='menuitem']");
      menuItems.forEach((menuItem) => {
        menuItem.addEventListener("click", () => {
          closeTopbarDropdowns();
        });
      });
    });

    document.addEventListener("click", (event) => {
      const clickTarget = event.target;
      if (clickTarget instanceof Node && topbarDropdownEls.some((dropdownEl) => dropdownEl.contains(clickTarget))) {
        return;
      }

      closeTopbarDropdowns();
    });

    document.addEventListener("keydown", (event) => {
      if (event.key === "Escape") {
        closeTopbarDropdowns();
      }
    });
  }

  function init() {
    initializeSidebarPopouts();
    initializeDetailPopouts();
    bindTopbarDropdownInteractions();
  }

  window.TarotChromeUi = {
    ...(window.TarotChromeUi || {}),
    init,
    initializeSidebarPopouts,
    initializeDetailPopouts,
    setTopbarDropdownOpen,
    closeTopbarDropdowns,
    bindTopbarDropdownInteractions
  };
})();