/* ==========================================================================
   ToolUse.1 — shared client
   Loads results (live results.json, else embedded snapshot), renders the
   leaderboard, and drives the motion layer: reveal-on-scroll, count-up,
   score bars, sortable columns.
   ========================================================================== */

"use strict";

/* Gate motion behind a class so the no-JS view stays fully visible. */
document.documentElement.classList.add("js");

/* Inlined snapshot so pages render when opened straight from disk
   (file:// blocks fetch). A served results.json overrides it. */
const EMBEDDED_RESULTS = {
  benchmark: "ToolUse.1",
  version: "1.0.0",
  updated: "2026-10-17",
  corpus: { cases: 114, call_cases: 78, no_call_cases: 36, tools: 9, protocols: 3 },
  rows: [
    {
      model: "oracle",
      link: "",
      protocol: "all",
      score: 1.0,
      score_ci95: [0.9889, 1.0],
      correct_call: 1.0,
      abstention: 1.0,
      spurious_call_rate: 0.0,
      n_cases: 342,
      notes: "reads the expectations out of the corpus — grader reference",
      self_check: true,
      by_protocol: { json: 1.0, xml: 1.0, plain: 1.0 },
    },
    {
      model: "HardcoreAI/Nova-1.1-0.8B",
      link: "https://huggingface.co/HardcoreAI/Nova-1.1-0.8B",
      protocol: "all",
      score: 0.6404,
      score_ci95: [0.5882, 0.6894],
      correct_call: 0.5855,
      abstention: 0.7593,
      spurious_call_rate: 0.1667,
      n_cases: 342,
      notes: "greedy · thinking off · batch 8 · English-only · fine-tuned",
      self_check: false,
      by_protocol: { json: 0.6754, xml: 0.6316, plain: 0.614 },
    },
    {
      model: "Qwen/Qwen3.5-0.8B",
      link: "https://huggingface.co/Qwen/Qwen3.5-0.8B",
      protocol: "all",
      score: 0.5936,
      score_ci95: [0.5408, 0.6443],
      correct_call: 0.4829,
      abstention: 0.8333,
      spurious_call_rate: 0.0648,
      n_cases: 342,
      notes: "greedy · thinking off · batch 8 · English-only · base model",
      self_check: false,
      by_protocol: { json: 0.6754, xml: 0.6754, plain: 0.4298 },
    },
  ],
};

const pct = (v) => (typeof v === "number" ? (v * 100).toFixed(1) + "%" : "—");
const ci = (lo, hi) => (lo == null || hi == null ? "—" : `${(lo * 100).toFixed(1)}% – ${(hi * 100).toFixed(1)}%`);

const prefersReduced = window.matchMedia("(prefers-reduced-motion: reduce)").matches;

/* ------------------------------------------------------------- motion */
function revealOnScroll(root = document) {
  const nodes = root.querySelectorAll(".reveal");
  if (prefersReduced || !("IntersectionObserver" in window)) {
    nodes.forEach((n) => n.classList.add("in"));
    return;
  }
  const io = new IntersectionObserver(
    (entries) => {
      entries.forEach((entry) => {
        if (entry.isIntersecting) {
          entry.target.classList.add("in");
          io.unobserve(entry.target);
        }
      });
    },
    { rootMargin: "0px 0px -8% 0px", threshold: 0.08 },
  );
  nodes.forEach((n) => io.observe(n));
}

function countUp(el) {
  const target = parseFloat(el.dataset.count);
  const suffix = el.dataset.suffix || "";
  if (prefersReduced || Number.isNaN(target)) { el.textContent = `${target}${suffix}`; return; }
  const start = performance.now();
  const dur = 900;
  const step = (now) => {
    const t = Math.min(1, (now - start) / dur);
    const eased = 1 - Math.pow(1 - t, 3);
    el.textContent = `${Math.round(target * eased)}${suffix}`;
    if (t < 1) requestAnimationFrame(step);
    else el.textContent = `${target}${suffix}`;
  };
  requestAnimationFrame(step);
}

/* ------------------------------------------------------------- rendering */
function scoreCell(value) {
  const wrap = document.createElement("div");
  wrap.className = "score-cell";
  const bar = document.createElement("div");
  bar.className = "bar";
  const fill = document.createElement("i");
  fill.dataset.w = Math.max(0, Math.min(1, value || 0));
  bar.append(fill);
  const val = document.createElement("span");
  val.className = "score-value";
  val.textContent = pct(value);
  wrap.append(bar, val);
  return wrap;
}

function spuriousCell(value) {
  const cell = document.createElement("td");
  cell.className = "num";
  if (typeof value !== "number") { cell.textContent = "—"; return cell; }
  cell.textContent = pct(value);
  cell.classList.add(value >= 0.3 ? "spurious-high" : value >= 0.1 ? "spurious-mid" : "");
  return cell;
}

function protoMini(byProtocol) {
  const wrap = document.createElement("div");
  wrap.className = "proto-mini";
  ["json", "xml", "plain"].forEach((key) => {
    const box = document.createElement("div");
    const label = document.createElement("span");
    label.className = "pl";
    label.textContent = key;
    const bar = document.createElement("div");
    bar.className = "pb";
    const fill = document.createElement("i");
    fill.dataset.w = Math.max(0, Math.min(1, byProtocol?.[key] ?? 0));
    bar.append(fill);
    const val = document.createElement("span");
    val.className = "pv";
    val.textContent = pct(byProtocol?.[key]);
    box.append(label, bar, val);
    wrap.append(box);
  });
  return wrap;
}

function rowNode(row, index, opts = {}) {
  const { withProtocol = false, withNotes = false } = opts;
  const tr = document.createElement("tr");
  tr.dataset.score = row.score ?? 0;
  tr.dataset.correct_call = row.correct_call ?? 0;
  tr.dataset.abstention = row.abstention ?? 0;
  tr.dataset.spurious_call_rate = row.spurious_call_rate ?? 0;
  tr.dataset.n_cases = row.n_cases ?? 0;

  const rank = document.createElement("td");
  rank.className = "col-rank";
  const badge = document.createElement("span");
  badge.className = `rank-badge${index < 3 ? ` rank-${index + 1}` : ""}`;
  badge.textContent = index + 1;
  rank.append(badge);
  tr.append(rank);

  const model = document.createElement("td");
  model.className = "col-model";
  if (row.link) {
    const a = document.createElement("a");
    a.className = "model-link model-name";
    a.href = row.link;
    a.target = "_blank";
    a.rel = "noopener";
    a.textContent = row.model;
    model.append(a);
  } else {
    const s = document.createElement("span");
    s.className = "model-name";
    s.textContent = row.model;
    model.append(s);
  }
  const sub = [row.protocol === "all" ? "all protocols" : `protocol: ${row.protocol}`, row.notes].filter(Boolean).join(" · ");
  if (sub) {
    const s = document.createElement("span");
    s.className = "model-sub";
    s.textContent = sub;
    model.append(s);
  }
  tr.append(model);

  const score = document.createElement("td");
  score.className = "num";
  score.append(scoreCell(row.score));
  const c = document.createElement("span");
  c.className = "ci";
  c.textContent = Array.isArray(row.score_ci95) ? ci(row.score_ci95[0], row.score_ci95[1]) : "";
  score.append(c);
  tr.append(score);

  tr.append(Object.assign(document.createElement("td"), { className: "num", textContent: pct(row.correct_call) }));
  tr.append(Object.assign(document.createElement("td"), { className: "num", textContent: pct(row.abstention) }));
  tr.append(spuriousCell(row.spurious_call_rate));
  tr.append(Object.assign(document.createElement("td"), { className: "num", textContent: row.n_cases ?? "—" }));

  if (withProtocol) {
    const proto = document.createElement("td");
    proto.append(protoMini(row.by_protocol));
    tr.append(proto);
  }

  if (withNotes) {
    const notes = document.createElement("td");
    notes.className = "col-notes";
    if (row.self_check) {
      const tag = document.createElement("span");
      tag.className = "tag";
      tag.textContent = "grader self-check";
      notes.append(tag);
    } else if (row.notes) {
      const span = document.createElement("span");
      span.className = "ci";
      span.textContent = row.notes;
      notes.append(span);
    }
    tr.append(notes);
  }

  return tr;
}

function renderBoard(data, host) {
  const tbody = host.querySelector("[data-board-body]");
  const stamp = host.querySelector("[data-board-stamp]");
  const emptyEl = host.querySelector("[data-board-empty]");
  const rows = [...(data.rows || [])].sort(
    (a, b) => (b.score ?? 0) - (a.score ?? 0) || (a.spurious_call_rate ?? 1) - (b.spurious_call_rate ?? 1),
  );

  const hasProtocolCol = !!host.querySelector("[data-col-protocol]");
  const hasNotesCol = !!host.querySelector("[data-col-notes]");

  tbody.replaceChildren(...rows.map((row, i) => rowNode(row, i, { withProtocol: hasProtocolCol, withNotes: hasNotesCol })));

  if (stamp) {
    stamp.textContent = [
      `${rows.length} entr${rows.length === 1 ? "y" : "ies"}`,
      data.version ? `v${data.version}` : "",
      data.updated ? `updated ${data.updated}` : "",
    ].filter(Boolean).join(" · ");
  }
  if (emptyEl) emptyEl.hidden = rows.length > 0;

  requestAnimationFrame(() => {
    tbody.querySelectorAll("tr").forEach((tr, i) => {
      setTimeout(() => tr.classList.add("in"), prefersReduced ? 0 : 40 * i);
    });
    tbody.querySelectorAll(".bar > i, .pb > i").forEach((fill) => {
      fill.style.width = `${Math.max(0, Math.min(1, parseFloat(fill.dataset.w) || 0)) * 100}%`;
    });
  });
}

/* ------------------------------------------------------------- sorting */
function wireSorting(host) {
  const headers = host.querySelectorAll("th[data-sort]");
  headers.forEach((th) => {
    th.classList.add("sortable");
    if (!th.querySelector(".arrow")) th.insertAdjacentHTML("beforeend", ' <span class="arrow">↑↓</span>');
    th.addEventListener("click", () => {
      const key = th.dataset.sort;
      const dir = th.getAttribute("aria-sort") === "descending" ? "ascending" : "descending";
      headers.forEach((h) => h.removeAttribute("aria-sort"));
      th.setAttribute("aria-sort", dir);
      const tbody = host.querySelector("[data-board-body]");
      const glyph = th.querySelector(".arrow");
      if (glyph) glyph.textContent = dir === "descending" ? " ↓" : " ↑";
      const rows = [...tbody.querySelectorAll("tr")];
      rows.sort((a, b) => {
        const av = parseFloat(a.dataset[key]) || 0;
        const bv = parseFloat(b.dataset[key]) || 0;
        return dir === "descending" ? bv - av : av - bv;
      });
      tbody.replaceChildren(...rows);
    });
  });
}

/* ------------------------------------------------------------- bootstrap */
async function loadResults() {
  try {
    const res = await fetch("results.json", { cache: "no-store" });
    if (!res.ok) throw new Error(`HTTP ${res.status}`);
    return await res.json();
  } catch {
    return EMBEDDED_RESULTS;
  }
}

function applyMetricCards(data) {
  const best = [...(data.rows || [])]
    .filter((r) => !r.self_check && typeof r.score === "number")
    .sort((a, b) => (b.score ?? 0) - (a.score ?? 0))[0];
  if (!best) return;
  const map = { overall: best.score, call: best.correct_call, abstain: best.abstention };
  document.querySelectorAll("[data-metric]").forEach((el) => {
    const v = map[el.dataset.metric];
    if (typeof v === "number") el.textContent = pct(v);
  });
  const leader = document.querySelector("[data-leader]");
  if (leader) leader.textContent = best.model;
}

document.addEventListener("DOMContentLoaded", async () => {
  document.querySelectorAll("[data-count]").forEach(countUp);
  revealOnScroll();

  const boards = document.querySelectorAll("[data-board]");
  if (!boards.length) return;

  const data = await loadResults();
  boards.forEach((host) => {
    renderBoard(data, host);
    wireSorting(host);
  });
  applyMetricCards(data);

  const year = document.getElementById("year");
  if (year) year.textContent = new Date().getFullYear();
});