// @ts-nocheck

const cleanTerm = (text) => text.replace(/\s+/g, " ").replace(/\.$/, "").trim();

const slugify = (text) =>
  text
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "");

const entrySpans = Array.from(document.querySelectorAll("span.none2"));
const entryMap = new Map();

entrySpans.forEach((span, index) => {
  const term = cleanTerm(span.textContent);
  if (!term) {
    return;
  }
  const id = `entry-${slugify(term)}`;
  span.setAttribute("id", id);
  span.classList.add("entry-title");
  /** @type {HTMLElement} */ (span).style.setProperty(
    "--entry-delay",
    `${Math.min(index * 0.01, 0.4)}s`,
  );
  entryMap.set(term, id);
});

const tocList = document.getElementById("toc-list");
const tocLetters = document.getElementById("toc-letters");
const termEntries = Array.from(entryMap.entries()).sort(([a], [b]) =>
  a.localeCompare(b),
);

const firstByLetter = new Map();
termEntries.forEach(([term, id]) => {
  const letter = term[0] ? term[0].toUpperCase() : "#";
  if (!firstByLetter.has(letter)) {
    firstByLetter.set(letter, id);
  }
  const link = document.createElement("a");
  link.href = `#${id}`;
  link.textContent = term;
  const item = document.createElement("li");
  item.appendChild(link);
  tocList?.appendChild(item);
});

Array.from(firstByLetter.entries())
  .sort(([a], [b]) => a.localeCompare(b))
  .forEach(([letter, id]) => {
    const link = document.createElement("a");
    link.href = `#${id}`;
    link.textContent = letter;
    tocLetters?.appendChild(link);
  });

const searchInput = document.getElementById("toc-search");
searchInput?.addEventListener("input", (event) => {
  const target = /** @type {HTMLInputElement} */ (event.target);
  const query = target.value.trim().toLowerCase();
  Array.from(tocList?.querySelectorAll("li") ?? []).forEach((item) => {
    const text = item.textContent.toLowerCase();
    item.style.display = text.includes(query) ? "" : "none";
  });
});

const specialCaseMap = {
  "A BARD": "BARDS",
  "A COURTIER": "COURTIERS",
  "A DEMON": "DEMONS",
  "A GODDESS OR GOD": "GODDESSES AND GODS",
  "A HERBWOMAN": "HERBWOMAN",
  "A KING'S": "KINGS",
  "A MAGIC USER": "MAGIC USERS",
  "A SEER": "SEER",
  "A WIZARD": "WIZARDS",
  AMBUSHED: "AMBUSHES",
  ASSASSIN: "ASSASSINS, GUILD OF",
  ASSASSINS: "ASSASSINS, GUILD OF",
  BACKLASHES: "BACKLASH OF MAGIC",
  BALLAD: "BALLAD, How to Compose a",
  BALLADS: "BALLAD, How to Compose a",
  BLOCKED: "MOUNTAIN PASS, BLOCKED",
  CHILD: "CHILDREN",
  CURSED: "CURSES",
  ETERNAL: "ETERNAL QUEST",
  "EVIL SPELLS": "SPELLS",
  FEMALE: "SLAVES, FEMALE,",
  "FELLOW TRAVELLER": "FELLOW TRAVELERS",
  "FELLOW TRAVELLERS": "FELLOW TRAVELERS",
  "GAY MA G E": "GAY MAGE",
  "GIFT OF SIGHT": "SIGHT",
  GOD: "GODDESSES AND GODS",
  GODDESS: "GODDESSES AND GODS",
  "GODDESS OR GOD": "GODDESSES AND GODS",
  GODS: "GODDESSES AND GODS",
  "GOOD KING": "KINGS",
  "GOOD SPY": "SPIES",
  "GOOD WIZARDS": "WIZARDS",
  "GUILD OF": "ASSASSINS, GUILD OF",
  HERBWOMEN: "HERBWOMAN",
  HERO: "HEROES",
  "HIDDEN CITY": "HIDDEN KINGDOM",
  "HOMESPUN ROBES": "ROBES",
  "HOW TO INTERACT WITH WIZARDS": "WIZARDS",
  IMPORT: "IMPORT/EXPORT",
  "JOURNEY CAKE": "WAYBREAD OR JOURNEY CAKE",
  "KING'": "KINGS",
  "LOST LAND": "LOST LANDS,",
  "LOST LANDS": "LOST LANDS,",
  MAGELIGHT: "MAGELIGHT OR MAGEFIRE",
  MALE: "SLAVES, MALE,",
  "MERCHANT'": "MERCHANTS",
  MINION: "MINIONS OF THE DARK LORD",
  "MINION OF THE DARK LORD": "MINIONS OF THE DARK LORD",
  MINIONS: "MINIONS OF THE DARK LORD",
  "MORE ON RIVERS": "RIVERS",
  "MORE ON RIVERS RIVERS": "RIVERS",
  MOON: "MOON(S)",
  "MOUNTAIN PASS": "MOUNTAIN PASS, BLOCKED",
  "NORTHERN BARBARIANS DWELL": "NORTHERN BARBARIANS",
  PANCELTIC: "PANCELTIC TOURS",
  "PANCELTIC TOUR": "PANCELTIC TOURS",
  PENTAGRAM: "PENTAGRAM OR PENTACLE",
  PENTAGRAMS: "PENTAGRAM OR PENTACLE",
  "POWER-": "POWER",
  "PRACTICE RING": "PRACTICE RING OR COMBAT RING",
  PRIESTESSES: "HIGH PRIESTESSES",
  "SECRET VALLEY": "VALLEYS",
  RIVERBOAT: "RIVERS",
  "REEK OF WRONG NESS": "REEK OF WRONGNESS",
  SLAVE: "GALLEY SLAVE",
  SLAVES: "SLAVES, MALE,",
  "STANDING STONES": "STONE CIRCLES",
  THIEVES: "THIEVES’ GUILD",
  "TOWN COUNCIL": "COUNCIL",
  "TOUR COMPANIONS": "COMPANIONS",
  TROTS: "TROTS, THE",
  WAYBREAD: "WAYBREAD OR JOURNEY CAKE",
  "WITCH LIGHT": "WITCHLIGHT",
  "WIZARD'": "WIZARDS",
  "WIZARD'S": "WIZARDS",
  "WIZARD'S BREEDING PROGRAMME": "BREEDING PROGRAMMES",
  "WIZARD'S STAFF": "STAFFS",
};

const resolveTerm = (term) => {
  const normalized = term.replace(/’/g, "'");
  const special = specialCaseMap[normalized];
  if (special && entryMap.has(special)) {
    return special;
  }
  if (entryMap.has(term)) {
    return term;
  }

  const lower = term.toLowerCase();
  const candidates = [];

  // Singularize
  if (lower.endsWith("ies")) {
    candidates.push(term.slice(0, -3) + "Y");
  }
  if (lower.endsWith("ves")) {
    candidates.push(term.slice(0, -3) + "F");
    candidates.push(term.slice(0, -3) + "FE");
  }
  if (lower.endsWith("es")) {
    candidates.push(term.slice(0, -2));
  }
  if (lower.endsWith("s")) {
    candidates.push(term.slice(0, -1));
  }

  // Pluralize
  if (lower.endsWith("y") && !/[aeiou]y$/.test(lower)) {
    candidates.push(term.slice(0, -1) + "IES");
  }
  if (lower.endsWith("f")) {
    candidates.push(term.slice(0, -1) + "VES");
  }
  if (lower.endsWith("fe")) {
    candidates.push(term.slice(0, -2) + "VES");
  }
  candidates.push(`${term}S`);
  if (/(s|x|z|ch|sh)$/i.test(lower)) {
    candidates.push(`${term}ES`);
  }

  return candidates.find((candidate) => entryMap.has(candidate)) || null;
};

const linkifyTextNode = (node) => {
  const text = node.nodeValue;
  if (!text || !/[A-Z]{2}/.test(text)) {
    return;
  }

  const matches = [];
  const regex = /\b[A-Z][A-Z0-9'’\-]*(?:\s+[A-Z][A-Z0-9'’\-]*)*\b/g;
  let match;
  while ((match = regex.exec(text)) !== null) {
    const raw = match[0];
    const cleaned = cleanTerm(raw);
    const resolved = resolveTerm(cleaned);
    if (resolved) {
      matches.push({
        start: match.index,
        end: match.index + raw.length,
        term: resolved,
        raw,
      });
    }
  }

  if (!matches.length) {
    return;
  }

  // Prefer longer matches to avoid linking a short term inside a longer one.
  const byLength = matches
    .slice()
    .sort((a, b) => b.end - b.start - (a.end - a.start) || a.start - b.start);

  const selected = [];
  byLength.forEach((candidate) => {
    const overlaps = selected.some(
      (picked) => candidate.start < picked.end && candidate.end > picked.start,
    );
    if (!overlaps) {
      selected.push(candidate);
    }
  });

  selected.sort((a, b) => a.start - b.start);

  const fragment = document.createDocumentFragment();
  let lastIndex = 0;
  selected.forEach(({ start, end, term }) => {
    if (start > lastIndex) {
      fragment.appendChild(
        document.createTextNode(text.slice(lastIndex, start)),
      );
    }
    const link = document.createElement("a");
    link.href = `#${entryMap.get(term)}`;
    link.textContent = text.slice(start, end);
    link.className = "entry-link";
    fragment.appendChild(link);
    lastIndex = end;
  });

  if (lastIndex < text.length) {
    fragment.appendChild(document.createTextNode(text.slice(lastIndex)));
  }

  node.parentNode.replaceChild(fragment, node);
};

const contentEl = document.getElementById("content");
if (contentEl) {
  const walker = document.createTreeWalker(contentEl, NodeFilter.SHOW_TEXT, {
    acceptNode: (node) => {
      const parent = node.parentElement;
      if (!parent) {
        return NodeFilter.FILTER_REJECT;
      }
      if (parent.closest("a, script, style")) {
        return NodeFilter.FILTER_REJECT;
      }
      if (parent.closest("span.none2")) {
        return NodeFilter.FILTER_REJECT;
      }
      return NodeFilter.FILTER_ACCEPT;
    },
  });

  const nodesToLinkify = [];
  while (walker.nextNode()) {
    nodesToLinkify.push(walker.currentNode);
  }

  nodesToLinkify.forEach((node) => linkifyTextNode(node));
}

// TOC collapse/expand toggle
const tocToggle = document.createElement("button");
tocToggle.className = "toc-toggle";
tocToggle.setAttribute("aria-label", "Toggle sidebar");
tocToggle.setAttribute("title", "Toggle sidebar");
document.body.appendChild(tocToggle);

const toc = document.querySelector(".toc");
const layout = document.querySelector(".layout");

tocToggle.addEventListener("click", () => {
  toc?.classList.toggle("collapsed");
  layout?.classList.toggle("toc-hidden");
  document.body.classList.toggle("toc-collapsed");
});