// Replace default mdBook themes with Catppuccin themes
(function () {
  "use strict";

  // Wait for DOM to be ready
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", init);
  } else {
    init();
  }

  function init() {
    addSidebarLogo();
    replaceThemeList();
    setupGhosttyStyleSidebar();

    // Watch for sidebar changes and re-run setup
    const sidebarScrollbox = document.querySelector(".sidebar-scrollbox");
    if (sidebarScrollbox) {
      const observer = new MutationObserver(() => {
        // Wait a bit for mdBook to finish updating
        setTimeout(setupGhosttyStyleSidebar, 50);
      });
      observer.observe(sidebarScrollbox, {
        childList: true,
        subtree: true,
      });
    }

    // Also re-run on page navigation
    window.addEventListener("hashchange", () => {
      setTimeout(setupGhosttyStyleSidebar, 100);
    });
  }

  function addSidebarLogo() {
    const scrollbox = document.querySelector(".sidebar-scrollbox");
    if (!scrollbox) {
      return;
    }

    // Check if logo already exists
    if (document.querySelector(".sidebar-logo")) {
      return;
    }

    // Create logo container
    const logoContainer = document.createElement("div");
    logoContainer.className = "sidebar-logo";

    // Create clickable link wrapper
    const logoLink = document.createElement("a");
    logoLink.href = "https://socktop.io";
    logoLink.style.display = "block";
    logoLink.style.textAlign = "center";

    // Create logo image
    const logoImg = document.createElement("img");
    // Use root-relative path that works from any page depth
    logoImg.src = window.location.pathname.includes("/assets/docs/")
      ? "/assets/docs/logo.png"
      : "logo.png";
    logoImg.alt = "socktop";
    logoImg.style.display = "inline-block";
    logoImg.style.maxWidth = "80%";

    logoLink.appendChild(logoImg);
    logoContainer.appendChild(logoLink);

    // Insert as the very first child inside the scrollbox
    scrollbox.insertBefore(logoContainer, scrollbox.firstChild);
  }

  function replaceThemeList() {
    const themeList = document.getElementById("mdbook-theme-list");
    if (!themeList) {
      console.warn("Theme list not found");
      return;
    }

    // Clear existing themes
    themeList.innerHTML = "";

    // Catppuccin themes
    const catppuccinThemes = [
      { id: "latte", name: "Latte" },
      { id: "frappe", name: "Frappé" },
      { id: "macchiato", name: "Macchiato" },
      { id: "mocha", name: "Mocha" },
    ];

    // Add Catppuccin themes
    catppuccinThemes.forEach((theme) => {
      const li = document.createElement("li");
      li.setAttribute("role", "none");

      const button = document.createElement("button");
      button.setAttribute("role", "menuitem");
      button.className = "theme";
      button.id = "mdbook-theme-" + theme.id;
      button.textContent = theme.name;

      li.appendChild(button);
      themeList.appendChild(li);
    });
  }

  function setupGhosttyStyleSidebar() {
    // Hide mdBook's default fold toggles
    const defaultToggles = document.querySelectorAll(".chapter-fold-toggle");
    defaultToggles.forEach((toggle) => {
      toggle.style.display = "none";
    });

    // Get current page path to determine active item
    const currentPath = window.location.pathname;

    // Find all chapter items
    const allChapterItems = document.querySelectorAll(
      "ol.chapter > li.chapter-item",
    );

    allChapterItems.forEach((li) => {
      // Check if this item has a nested section list
      const nestedList = li.querySelector("ol.section");

      // Skip if no nested list (like Introduction)
      if (!nestedList) {
        return;
      }

      const linkWrapper = li.querySelector("span.chapter-link-wrapper");
      const link = linkWrapper ? linkWrapper.querySelector("a") : null;

      if (!linkWrapper) {
        return;
      }

      // Check if any child link matches current page
      let hasActivePage = false;
      const childLinks = nestedList.querySelectorAll("a");
      childLinks.forEach((childLink) => {
        const href = childLink.getAttribute("href");
        if (
          href &&
          currentPath.includes(href.replace("../", "").replace("./", ""))
        ) {
          childLink.closest("li.chapter-item").classList.add("active");
          hasActivePage = true;
        }
      });

      // Skip if we already added a chevron - just update state
      const existingChevron = linkWrapper.querySelector(".chapter-chevron");
      if (existingChevron) {
        if (hasActivePage) {
          nestedList.style.display = "block";
          li.classList.add("expanded");
          li.classList.remove("collapsed");
          existingChevron.style.transform = "rotate(90deg)";
        }
        return;
      }

      // Create custom chevron
      const chevron = document.createElement("span");
      chevron.className = "chapter-chevron";
      chevron.textContent = "›";
      chevron.style.cssText =
        "float: right; transition: transform 0.2s ease; display: inline-block; opacity: 0.6; font-size: 1.2em; line-height: 1; user-select: none; cursor: pointer;";

      // Insert chevron into the link wrapper
      linkWrapper.appendChild(chevron);

      // Start expanded if it contains the active page, collapsed otherwise
      if (hasActivePage) {
        nestedList.style.display = "block";
        li.classList.add("expanded");
        li.classList.remove("collapsed");
        chevron.style.transform = "rotate(90deg)";
      } else {
        nestedList.style.display = "none";
        li.classList.add("collapsed");
        li.classList.remove("expanded");
        chevron.style.transform = "rotate(0deg)";
      }

      // Add click handler to toggle
      const toggleSection = function (e) {
        e.preventDefault();
        e.stopPropagation();

        const isCollapsed = li.classList.contains("collapsed");

        if (isCollapsed) {
          // Expand
          nestedList.style.display = "block";
          li.classList.remove("collapsed");
          li.classList.add("expanded");
          chevron.style.transform = "rotate(90deg)";
        } else {
          // Collapse
          nestedList.style.display = "none";
          li.classList.add("collapsed");
          li.classList.remove("expanded");
          chevron.style.transform = "rotate(0deg)";
        }
      };

      // Click on chevron toggles
      chevron.addEventListener("click", toggleSection);

      // Click on parent link also toggles if it's a dummy link
      if (link) {
        const href = link.getAttribute("href");
        if (!href || href === "" || href === "#") {
          link.addEventListener("click", toggleSection);
          link.style.cursor = "pointer";
        }
      } else {
        linkWrapper.addEventListener("click", toggleSection);
        linkWrapper.style.cursor = "pointer";
      }
    });
  }
})();