/* PhantomWiki viewer — Corpus/Eval across nine universes plus five canonical
   full runs and a prejoined comparison view for size5000_seed1. */
(function () {
  "use strict";

  var SCOPE_SET = "size5000_seed1";
  var RECORD_CACHE_LIMIT = 12;
  var RUN_REGISTRY = {
    c1: { mode: "run-c1", button: "modeC1Btn", cls: "run-c1" },
    c2: { mode: "run-c2", button: "modeC2Btn", cls: "run-c2" },
    c6: { mode: "run-c6", button: "modeC6Btn", cls: "run-c6" },
    naive: { mode: "run-naive", button: "modeNaiveBtn", cls: "run-naive" },
    e2e: { mode: "run-e2e", button: "modeE2eBtn", cls: "run-e2e" },
    e2e_rawtext: {
      mode: "run-e2e-rawtext",
      button: "modeE2eRawtextBtn",
      cls: "run-e2e-rawtext",
    },
  };
  var RUN_ORDER = ["c1", "c2", "c6", "naive", "e2e", "e2e_rawtext"];
  var $ = function (id) { return document.getElementById(id); };

  function esc(s) {
    if (s === null || s === undefined) return "";
    return String(s).replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");
  }
  function truncate(s, n) {
    s = String(s || "");
    return s.length > n ? s.slice(0, n - 1) + "…" : s;
  }
  function loadJson(path) {
    return fetch(path).then(function (response) {
      if (!response.ok) throw new Error(path + " returned " + response.status);
      return response.json();
    });
  }
  function pct(value) { return (Number(value || 0) * 100).toFixed(2) + "%"; }
  function fmtNumber(value) {
    return typeof value === "number" ? value.toLocaleString() : "—";
  }
  function runSlot(mode) {
    for (var slot in RUN_REGISTRY) {
      if (RUN_REGISTRY[slot].mode === mode) return slot;
    }
    return null;
  }
  function isScopedMode(mode) { return mode === "compare" || Boolean(runSlot(mode)); }

  function rememberQid(qid) {
    if (qid) window.TrajectoryUI.setQid(qid);
  }

  function sharedIndex(records) {
    var qid = window.TrajectoryUI.getQid();
    if (!qid) return -1;
    return records.findIndex(function (record) {
      return (record.id || record.qid) === qid;
    });
  }

  var state = {
    sets: [], setName: null, mode: "corpus", priorSetName: null,
    corpus: [], corpusView: [], corpusIdx: 0, docByTitle: {},
    questions: [], evalView: [], evalIdx: 0, facets: [],
    runManifest: null, runIndexes: {}, runIndexPromises: {},
    runViews: {}, runIdx: {}, renderedRunSlot: null,
    runCache: {}, runCacheOrder: [], runRecordPromises: {},
    compareIndex: null, compareIndexPromise: null, compareView: [], compareIdx: 0,
    compareCache: {}, compareCacheOrder: [], compareRecordPromises: {},
    setLoadSeq: 0, modeSeq: 0, loadedSetName: null,
    loadingSetName: null, setLoadPromise: null,
  };

  /* ---------------- loading ---------------- */
  function loadManifests() {
    return Promise.all([loadJson("sets.json"), loadJson("runs/manifest.json")]).then(function (results) {
      state.sets = results[0] || [];
      state.runManifest = results[1] || {};
      var sel = $("setSelect");
      sel.innerHTML = "";
      state.sets.forEach(function (set) {
        var option = document.createElement("option");
        option.value = set.set;
        option.textContent = set.label + "  (" + set.n_docs + " docs · " + set.n_questions + " Q)";
        sel.appendChild(option);
      });
      if (!state.sets.length) throw new Error("no universes");

      (state.runManifest.slots || []).forEach(function (entry) {
        if (RUN_REGISTRY[entry.slot]) {
          Object.keys(entry).forEach(function (key) { RUN_REGISTRY[entry.slot][key] = entry[key]; });
        }
      });
      RUN_ORDER.forEach(function (slot) {
        var config = RUN_REGISTRY[slot];
        var button = $(config.button);
        button.classList.add("run-tab", config.cls);
        button.title = config.label + ": " + config.correct + "/" + config.total + " correct";
      });
      $("modeCompareBtn").classList.add("compare-tab");
      return loadSet(state.sets[0].set).then(function (loaded) {
        if (loaded) setScopedButtonsDisabled(false);
      });
    });
  }

  function cachedRecord(cache, order, key) {
    if (!Object.prototype.hasOwnProperty.call(cache, key)) return null;
    var index = order.indexOf(key);
    if (index >= 0) order.splice(index, 1);
    order.push(key);
    return cache[key];
  }

  function storeRecord(cache, order, key, record) {
    cache[key] = record;
    var index = order.indexOf(key);
    if (index >= 0) order.splice(index, 1);
    order.push(key);
    while (order.length > RECORD_CACHE_LIMIT) delete cache[order.shift()];
  }

  function currentManifest() {
    for (var i = 0; i < state.sets.length; i++) {
      if (state.sets[i].set === state.setName) return state.sets[i];
    }
    return null;
  }

  function loadSet(name) {
    if (state.loadedSetName === name) {
      state.setLoadSeq++;
      state.loadingSetName = null;
      state.setLoadPromise = null;
      state.setName = name;
      $("setSelect").value = name;
      $("loading").style.display = "none";
      renderFooter();
      applyModeVisibility();
      return Promise.resolve(true);
    }
    if (state.loadingSetName === name && state.setLoadPromise) {
      return state.setLoadPromise;
    }
    var loadSeq = ++state.setLoadSeq;
    state.setName = name;
    $("setSelect").value = name;
    var manifest = currentManifest();
    if (!manifest) return Promise.reject(new Error("unknown universe " + name));
    $("loading").style.display = "block";
    $("loading").textContent = "Loading " + manifest.label + " …";
    hideAllViews();
    var request = Promise.all([loadJson(manifest.corpus_file), loadJson(manifest.eval_file)]).then(function (results) {
      if (loadSeq !== state.setLoadSeq) return false;
      state.corpus = results[0] || [];
      state.questions = results[1] || [];
      state.docByTitle = {};
      state.corpus.forEach(function (doc, index) { state.docByTitle[doc.title] = index; });
      state.corpusIdx = 0;
      state.evalIdx = 0;
      buildFacetFilters();
      $("corpusFilter").value = "";
      $("evalSearch").value = "";
      filterCorpus();
      filterEval();
      renderFooter();
      $("loading").style.display = "none";
      state.loadedSetName = name;
      state.loadingSetName = null;
      state.setLoadPromise = null;
      setScopedButtonsDisabled(false);
      applyModeVisibility();
      return true;
    }).catch(function (error) {
      if (loadSeq !== state.setLoadSeq) return false;
      state.loadingSetName = null;
      state.setLoadPromise = null;
      $("loading").style.display = "block";
      $("loading").textContent = "Failed to load " + manifest.label + ": " + error;
      applyModeVisibility();
      return false;
    });
    state.loadingSetName = name;
    state.setLoadPromise = request;
    return request;
  }

  /* ---------------- corpus tab ---------------- */
  function filterCorpus() {
    var query = $("corpusFilter").value.trim().toLowerCase();
    state.corpusView = state.corpus.filter(function (doc) {
      return !query || doc.title.toLowerCase().indexOf(query) !== -1;
    });
    if (state.corpusIdx >= state.corpusView.length) state.corpusIdx = 0;
    rebuildDocSelect();
    renderCorpus();
  }

  function rebuildDocSelect() {
    var select = $("docSelect");
    select.innerHTML = "";
    state.corpusView.forEach(function (doc, index) {
      var option = document.createElement("option");
      option.value = String(index);
      option.textContent = truncate(doc.title, 52);
      select.appendChild(option);
    });
    select.value = String(state.corpusIdx);
  }

  function renderCorpus() {
    var meta = $("docMetaCard");
    var body = $("docContent");
    if (!state.corpusView.length) {
      meta.innerHTML = '<div class="empty">No people match the filter.</div>';
      body.innerHTML = "";
      $("corpusCounter").textContent = "0 / 0";
      return;
    }
    var doc = state.corpusView[state.corpusIdx];
    $("docSelect").value = String(state.corpusIdx);
    $("corpusCounter").textContent = (state.corpusIdx + 1) + " / " + state.corpusView.length;
    meta.innerHTML = "<h2>" + esc(doc.title) + "</h2>";
    try { body.innerHTML = marked.parse(doc.article || ""); }
    catch (error) { body.textContent = doc.article || ""; }
    body.scrollTop = 0;
  }

  function selectDocByTitle(title) {
    $("corpusFilter").value = "";
    state.corpusView = state.corpus.slice();
    var index = state.docByTitle.hasOwnProperty(title) ? state.docByTitle[title] : 0;
    state.corpusIdx = index;
    rebuildDocSelect();
    renderCorpus();
  }

  function openCanonicalCorpus(title) {
    setMode("corpus", { keepRunScope: true }).then(function () {
      selectDocByTitle(title);
    });
  }

  /* ---------------- eval tab ---------------- */
  function buildFacetFilters() {
    var host = $("facetFilters");
    host.innerHTML = "";
    state.facets = (currentManifest() || {}).facets || [];
    state.facets.forEach(function (facet) {
      var select = document.createElement("select");
      select.className = "facet-select";
      select.setAttribute("data-key", facet.key);
      var all = document.createElement("option");
      all.value = "";
      all.textContent = "All " + facet.key.toLowerCase();
      select.appendChild(all);
      (facet.values || []).forEach(function (value) {
        var option = document.createElement("option");
        option.value = value;
        option.textContent = facet.key + " " + value;
        select.appendChild(option);
      });
      select.addEventListener("change", filterEval);
      host.appendChild(select);
    });
  }

  function activeFacetFilters() {
    var result = [];
    Array.prototype.forEach.call(document.querySelectorAll("#facetFilters .facet-select"), function (select) {
      if (select.value) result.push([select.getAttribute("data-key"), select.value]);
    });
    return result;
  }

  function filterEval() {
    var query = $("evalSearch").value.trim().toLowerCase();
    var facets = activeFacetFilters();
    state.evalView = state.questions.filter(function (row) {
      for (var i = 0; i < facets.length; i++) {
        if (String((row.meta || {})[facets[i][0]]) !== facets[i][1]) return false;
      }
      if (query) {
        var haystack = [row.question, (row.answer || []).join(" "), row.id].join(" ").toLowerCase();
        if (haystack.indexOf(query) === -1) return false;
      }
      return true;
    });
    var target = sharedIndex(state.evalView);
    if (target >= 0) state.evalIdx = target;
    else if (state.evalIdx >= state.evalView.length) state.evalIdx = 0;
    rebuildQuestionSelect();
    renderEval();
  }

  function rebuildQuestionSelect() {
    var select = $("questionSelect");
    select.innerHTML = "";
    state.evalView.forEach(function (row, index) {
      var option = document.createElement("option");
      option.value = String(index);
      option.textContent = truncate(row.question, 52);
      select.appendChild(option);
    });
    select.value = String(state.evalIdx);
  }

  function field(label, valueHtml) {
    return '<div class="field"><div class="lbl">' + esc(label) + '</div><div class="val">' + valueHtml + "</div></div>";
  }

  function personChips(values) {
    if (!values || !values.length) return '<span class="empty-answer">(none)</span>';
    return '<div class="answer-chips">' + values.map(function (value) {
      if (state.docByTitle.hasOwnProperty(value)) {
        return '<a class="ans-chip" data-doc="' + esc(value) + '">' + esc(value) + " ↗</a>";
      }
      return '<span class="ans-chip">' + esc(value) + "</span>";
    }).join("") + "</div>";
  }

  function wirePersonLinks(container) {
    Array.prototype.forEach.call(container.querySelectorAll("a.ans-chip[data-doc]"), function (link) {
      link.addEventListener("click", function () {
        openCanonicalCorpus(this.getAttribute("data-doc"));
      });
    });
  }

  function renderEval() {
    var card = $("evalCard");
    if (!state.evalView.length) {
      card.innerHTML = '<div class="empty">No questions match the filter.</div>';
      $("evalCounter").textContent = "0 / 0";
      return;
    }
    var row = state.evalView[state.evalIdx];
    if (!window.__e2eStructuresActive) rememberQid(row.id);
    $("questionSelect").value = String(state.evalIdx);
    $("evalCounter").textContent = (state.evalIdx + 1) + " / " + state.evalView.length;
    var meta = row.meta || {};
    var badges = '<span class="badge id">' + esc(row.id.slice(0, 8)) + "</span>" +
      '<span class="badge set">' + esc(state.setName) + "</span>" +
      (meta.Difficulty ? '<span class="badge diff">difficulty ' + esc(meta.Difficulty) + "</span>" : "") +
      (meta.Type ? '<span class="badge">type ' + esc(meta.Type) + "</span>" : "") +
      '<span class="badge">' + (row.answer || []).length + " answer" + ((row.answer || []).length === 1 ? "" : "s") + "</span>";
    var fields = "";
    if (row.template) fields += field("Question template", '<span class="template-txt">' + esc(row.template) + "</span>");
    if (row.prolog && row.prolog.length) {
      fields += field("Prolog reasoning (answer = " + esc(row.prolog_answer) + ")",
        '<code class="prolog-code">' + esc(row.prolog.join("\n")) + "</code>");
    }
    fields += field("Supporting documents",
      row.supporting_titles && row.supporting_titles.length
        ? personChips(row.supporting_titles)
        : '<span class="muted">Answer is an attribute value, not a person document.</span>');
    card.innerHTML = '<div class="badges">' + badges + "</div>" +
      "<h2>" + esc(row.question) + "</h2>" +
      window.TrajectoryUI.gold(row.answer, "Gold") +
      fields;
    wirePersonLinks(card);
  }

  /* ---------------- shared run rendering ---------------- */
  function scoreCard(label, numerator, denominator, kind) {
    return '<div class="score-card ' + esc(kind || "") + '"><div class="score-label">' + esc(label) +
      '</div><div class="score-value">' + esc(numerator) + " / " + esc(denominator) +
      '</div><div class="score-pct">' + pct(denominator ? numerator / denominator : 0) + "</div></div>";
  }

  function statusBadge(record) {
    var status = !record.answered ? "missing" :
      (record.correct ? "correct" :
        (record.score > 0 ? "partial" : "incorrect"));
    var label = status === "missing" ? "missing / unanswered" : status;
    return '<span class="status-badge ' + status + '">' + label + "</span>";
  }

  function canonicalScoreCard(config) {
    if (config.score_label && config.score_label !== "Canonical score") {
      return '<div class="score-card correct"><div class="score-label">' +
        esc(config.score_label) + '</div><div class="score-value">' +
        pct(config.score) + '</div><div class="score-pct">' +
        esc(config.score_detail || "") + "</div></div>";
    }
    return scoreCard("Canonical score", config.correct, config.total, "correct");
  }

  function metadataBadges(record) {
    var metadata = record.metadata || {};
    return '<div class="badges"><span class="badge id">' + esc(record.qid) + "</span>" +
      '<span class="badge set">' + SCOPE_SET + "</span>" +
      (metadata.difficulty ? '<span class="badge diff">difficulty ' + esc(metadata.difficulty) + "</span>" : "") +
      (metadata.type ? '<span class="badge">type ' + esc(metadata.type) + "</span>" : "") +
      statusBadge(record) + "</div>";
  }

  function operationalHtml(record) {
    var tokens = record.tokens || {};
    var stop = record.failure_reason || record.stop_reason || record.finish_reason ||
      ((record.finish_reasons || []).length ? record.finish_reasons[record.finish_reasons.length - 1] : "—");
    return '<div class="ops-grid">' +
      field("Stop / failure", '<code>' + esc(stop) + "</code>") +
      field("Tokens", "total " + fmtNumber(tokens.total_tokens) + " · prompt " +
        fmtNumber(tokens.prompt_tokens) + " · completion " + fmtNumber(tokens.completion_tokens) +
        (typeof tokens.reasoning_tokens === "number" ? " · reasoning " + fmtNumber(tokens.reasoning_tokens) : "")) +
      field("Agent work", (typeof record.turns === "number" ? record.turns + " turns" : "no agent loop") +
        " · " + fmtNumber(record.tool_calls || 0) + " tool calls" +
        (Object.keys(record.tool_call_counts || {}).length
          ? " (" + Object.keys(record.tool_call_counts).map(function (key) {
            return key + " " + record.tool_call_counts[key];
          }).join(", ") + ")" : "")) +
      "</div>";
  }

  function eventsHtml(events) {
    events = events || [];
    if (!events.length) return '<div class="muted">No agent events for this run.</div>';
    return window.TrajectoryUI.render(events, "Agent trajectory");
  }

  function judgeHtml(record) {
    var judge = record.judge || {};
    return '<div class="judge-summary">' +
      (typeof record.score === "number"
        ? field("Per-question answer F1", (record.score * 100).toFixed(2) + "%")
        : "") +
      field("Extracted judge answer", record.extracted_judge_answer
        ? '<code class="answer-code">' + esc(record.extracted_judge_answer) + "</code>"
        : '<span class="muted">(not judged)</span>') +
      field("Judge confidence", judge.confidence === null || judge.confidence === undefined
        ? "—" : esc(judge.confidence) + "%") +
      (judge.text ? '<details><summary>Judge details</summary><pre class="text-block">' +
        esc(judge.text) + "</pre></details>" : "") +
      "</div>";
  }

  function ensureRunIndex(slot) {
    var config = RUN_REGISTRY[slot];
    if (state.runIndexes[slot]) return Promise.resolve(state.runIndexes[slot]);
    if (state.runIndexPromises[slot]) return state.runIndexPromises[slot];
    var request = loadJson(config.index).then(function (index) {
      state.runIndexes[slot] = index;
      if (state.runIdx[slot] === undefined) state.runIdx[slot] = 0;
      delete state.runIndexPromises[slot];
      return index;
    }, function (error) {
      delete state.runIndexPromises[slot];
      throw error;
    });
    state.runIndexPromises[slot] = request;
    return request;
  }

  function loadRun(slot) {
    var config = RUN_REGISTRY[slot];
    if (state.runIndexes[slot]) {
      $("loading").style.display = "none";
      filterRun();
      return Promise.resolve();
    }
    $("loading").style.display = "block";
    $("loading").textContent = "Loading " + config.label + " index …";
    return ensureRunIndex(slot).then(function () {
      if (runSlot(state.mode) !== slot) return;
      $("loading").style.display = "none";
      filterRun();
      applyModeVisibility();
    }).catch(function (error) {
      if (runSlot(state.mode) === slot) {
        $("loading").style.display = "block";
        $("loading").textContent = "Failed to load " + config.label + ": " + error;
      }
    });
  }

  function ensureRunRecord(slot, qid) {
    var key = slot + "/" + qid;
    var cached = cachedRecord(state.runCache, state.runCacheOrder, key);
    if (cached) return Promise.resolve(cached);
    if (state.runRecordPromises[key]) return state.runRecordPromises[key];
    var config = RUN_REGISTRY[slot];
    var request = loadJson(config.records + "/" + qid + ".json").then(function (record) {
      delete state.runRecordPromises[key];
      storeRecord(state.runCache, state.runCacheOrder, key, record);
      return record;
    }, function (error) {
      delete state.runRecordPromises[key];
      throw error;
    });
    state.runRecordPromises[key] = request;
    return request;
  }

  function filterRun() {
    var slot = runSlot(state.mode);
    if (!slot || !state.runIndexes[slot]) return;
    var query = $("runSearch").value.trim().toLowerCase();
    var status = $("runStatus").value;
    state.runViews[slot] = state.runIndexes[slot].records.filter(function (record) {
      if (status && record.status !== status) return false;
      if (!query) return true;
      return [record.qid, record.question, (record.gold || []).join(" ")].join(" ").toLowerCase().indexOf(query) !== -1;
    });
    var target = sharedIndex(state.runViews[slot]);
    if (target >= 0) state.runIdx[slot] = target;
    else if (state.runIdx[slot] >= state.runViews[slot].length) state.runIdx[slot] = 0;
    rebuildRunSelect(slot);
    renderRun(slot);
  }

  function rebuildRunSelect(slot) {
    var select = $("runQidSelect");
    select.innerHTML = "";
    (state.runViews[slot] || []).forEach(function (record, index) {
      var option = document.createElement("option");
      option.value = String(index);
      option.textContent = record.qid.slice(0, 8) + " · " + truncate(record.question, 44);
      select.appendChild(option);
    });
    select.value = String(state.runIdx[slot] || 0);
  }

  function renderRun(slot) {
    var view = state.runViews[slot] || [];
    var index = state.runIdx[slot] || 0;
    var host = $("runView");
    state.renderedRunSlot = slot;
    applyModeVisibility();
    if (!view.length) {
      host.innerHTML = '<div class="empty">No run records match the filters.</div>';
      $("runCounter").textContent = "0 / 0";
      return;
    }
    var summary = view[index];
    var config = RUN_REGISTRY[slot];
    $("runQidSelect").value = String(index);
    $("runCounter").textContent = (index + 1) + " / " + view.length;
    host.innerHTML = '<div class="loading-inline">Loading ' + esc(summary.qid) + " …</div>";
    var request = ensureRunRecord(slot, summary.qid);
    request.then(function (record) {
      var current = (state.runViews[slot] || [])[state.runIdx[slot] || 0];
      if (runSlot(state.mode) !== slot || !current || current.qid !== record.qid) return;
      rememberQid(record.qid);
      var support = personChips((record.metadata || {}).supporting_titles || []);
      host.innerHTML =
        '<div class="metric-grid">' +
          canonicalScoreCard(config) +
          scoreCard("Answered", config.answered, config.total, "coverage") +
        "</div>" +
        '<article class="run-card ' + esc(config.cls) + '">' +
          metadataBadges(record) +
          "<h2>" + esc(record.question) + "</h2>" +
          window.TrajectoryUI.gold(record.gold, "Gold") +
          (slot.indexOf("e2e") === 0
            ? window.TrajectoryUI.supporting(
              "Supporting people",
              support || '<span class="muted">none</span>',
              ((record.metadata || {}).supporting_titles || []).length
            )
            : field("Supporting people", support)) +
          field("Prediction", record.prediction
            ? '<pre class="text-block prediction">' + esc(record.prediction) + "</pre>"
            : '<div class="missing-panel">No answer returned · ' + esc(record.failure_reason || "unknown failure") + "</div>") +
          judgeHtml(record) +
          operationalHtml(record) +
          eventsHtml(record.events) +
        "</article>";
      wirePersonLinks(host);
      window.TrajectoryUI.bind(host);
    }).catch(function (error) {
      var current = (state.runViews[slot] || [])[state.runIdx[slot] || 0];
      if (runSlot(state.mode) === slot && current && current.qid === summary.qid) {
        host.innerHTML = '<div class="empty">Failed to load record: ' + esc(error) + "</div>";
      }
    });
  }

  /* ---------------- compare rendering ---------------- */
  function ensureCompareIndex() {
    if (state.compareIndex) return Promise.resolve(state.compareIndex);
    if (state.compareIndexPromise) return state.compareIndexPromise;
    var request = loadJson((state.runManifest || {}).compare_index || "compare/index.json").then(function (index) {
      state.compareIndex = index;
      state.compareIndexPromise = null;
      return index;
    }, function (error) {
      state.compareIndexPromise = null;
      throw error;
    });
    state.compareIndexPromise = request;
    return request;
  }

  function loadCompare() {
    if (state.compareIndex) {
      $("loading").style.display = "none";
      filterCompare();
      return Promise.resolve();
    }
    $("loading").style.display = "block";
    $("loading").textContent = "Loading comparison index …";
    return ensureCompareIndex().then(function () {
      if (state.mode !== "compare") return;
      $("loading").style.display = "none";
      filterCompare();
      applyModeVisibility();
    }).catch(function (error) {
      if (state.mode === "compare") {
        $("loading").style.display = "block";
        $("loading").textContent = "Failed to load comparison index: " + error;
      }
    });
  }

  function ensureCompareRecord(qid) {
    var cached = cachedRecord(state.compareCache, state.compareCacheOrder, qid);
    if (cached) return Promise.resolve(cached);
    if (state.compareRecordPromises[qid]) return state.compareRecordPromises[qid];
    var request = loadJson("compare/records/" + qid + ".json").then(function (record) {
      delete state.compareRecordPromises[qid];
      storeRecord(state.compareCache, state.compareCacheOrder, qid, record);
      return record;
    }, function (error) {
      delete state.compareRecordPromises[qid];
      throw error;
    });
    state.compareRecordPromises[qid] = request;
    return request;
  }

  function filterCompare() {
    if (!state.compareIndex) return;
    var query = $("compareSearch").value.trim().toLowerCase();
    var filter = $("compareFilter").value;
    state.compareView = state.compareIndex.records.filter(function (record) {
      if (filter === "disagreement" && !record.disagreement) return false;
      if (filter === "missing" && !record.any_missing) return false;
      if (filter === "e2e-correct" && !record.only_e2e_correct) return false;
      return !query || [record.qid, record.question].join(" ").toLowerCase().indexOf(query) !== -1;
    });
    var target = sharedIndex(state.compareView);
    if (target >= 0) state.compareIdx = target;
    else if (state.compareIdx >= state.compareView.length) state.compareIdx = 0;
    rebuildCompareSelect();
    renderCompare();
  }

  function rebuildCompareSelect() {
    var select = $("compareQidSelect");
    select.innerHTML = "";
    state.compareView.forEach(function (record, index) {
      var option = document.createElement("option");
      option.value = String(index);
      option.textContent = record.qid.slice(0, 8) + " · " + truncate(record.question, 44);
      select.appendChild(option);
    });
    select.value = String(state.compareIdx);
  }

  function compareScoreCards() {
    return '<div class="compare-score-grid">' + RUN_ORDER.map(function (slot) {
      var config = RUN_REGISTRY[slot];
      return '<div class="compare-score ' + esc(config.cls) + '"><div class="score-label">' +
        esc(config.label) + '</div><div class="score-value">' +
        (config.score_label && config.score_label !== "Canonical score"
          ? pct(config.score)
          : config.correct + " / " + config.total) +
        '</div><div class="score-pct">' +
        (config.score_detail ? esc(config.score_detail) + " · " : "") +
        config.answered + " answered</div></div>";
    }).join("") + "</div>";
  }

  function compareRunCard(slot, record, qid) {
    var config = RUN_REGISTRY[slot];
    return '<section class="compare-run-card ' + esc(config.cls) + '">' +
      '<div class="compare-run-head"><h3>' + esc(config.label) + "</h3>" + statusBadge(record) + "</div>" +
      field("Prediction", record.prediction
        ? '<pre class="text-block prediction">' + esc(record.prediction) + "</pre>"
        : '<div class="missing-panel">No answer · ' + esc(record.failure_reason || "unknown failure") + "</div>") +
      field("Extracted judge answer", record.extracted_judge_answer
        ? '<code class="answer-code">' + esc(record.extracted_judge_answer) + "</code>"
        : '<span class="muted">(not judged)</span>') +
      (typeof record.score === "number"
        ? field("Per-question answer F1", (record.score * 100).toFixed(2) + "%")
        : "") +
      operationalHtml(record) +
      ((record.judge || {}).text ? '<details><summary>Judge details</summary><pre class="text-block">' +
        esc(record.judge.text) + "</pre></details>" : "") +
      '<details class="compare-events" data-path="' + esc(record.events_path) + '" data-qid="' +
        esc(qid) + '" data-slot="' + esc(slot) + '"><summary>Agent events</summary>' +
        '<div class="lazy-events muted">Expand to load events.</div></details>' +
      "</section>";
  }

  function wireCompareEvents(host) {
    Array.prototype.forEach.call(host.querySelectorAll("details.compare-events"), function (details) {
      details.addEventListener("toggle", function () {
        if (!this.open || this.getAttribute("data-loaded") === "1") return;
        var detail = this;
        var target = detail.querySelector(".lazy-events");
        target.textContent = "Loading events …";
        loadJson(detail.getAttribute("data-path")).then(function (record) {
          detail.setAttribute("data-loaded", "1");
          target.classList.remove("muted");
          target.innerHTML = eventsHtml(record.events || []);
          window.TrajectoryUI.bind(detail);
        }).catch(function (error) {
          target.textContent = "Failed to load events: " + error;
        });
      });
    });
  }

  function renderCompare() {
    var host = $("compareView");
    if (!state.compareView.length) {
      host.innerHTML = '<div class="empty">No comparison records match the filters.</div>';
      $("compareCounter").textContent = "0 / 0";
      return;
    }
    var summary = state.compareView[state.compareIdx];
    $("compareQidSelect").value = String(state.compareIdx);
    $("compareCounter").textContent = (state.compareIdx + 1) + " / " + state.compareView.length;
    host.innerHTML = '<div class="loading-inline">Loading comparison ' + esc(summary.qid) + " …</div>";
    var request = ensureCompareRecord(summary.qid);
    request.then(function (record) {
      var current = state.compareView[state.compareIdx];
      if (state.mode !== "compare" || !current || current.qid !== record.qid) return;
      rememberQid(record.qid);
      host.innerHTML = compareScoreCards() +
        '<article class="compare-question">' +
          metadataBadges({
            qid: record.qid, metadata: record.metadata, answered: summary.answered_count === RUN_ORDER.length,
            correct: summary.correct_count === RUN_ORDER.length,
          }) +
          "<h2>" + esc(record.question) + "</h2>" +
          window.TrajectoryUI.gold(record.gold, "Gold") +
          field("Supporting people", personChips((record.metadata || {}).supporting_titles || [])) +
        "</article>" +
        '<div class="compare-grid">' + RUN_ORDER.map(function (slot) {
          return compareRunCard(slot, record.runs[slot], record.qid);
        }).join("") + "</div>";
      wirePersonLinks(host);
      wireCompareEvents(host);
    }).catch(function (error) {
      var current = state.compareView[state.compareIdx];
      if (state.mode === "compare" && current && current.qid === summary.qid) {
        host.innerHTML = '<div class="empty">Failed to load comparison: ' + esc(error) + "</div>";
      }
    });
  }

  /* ---------------- mode / footer / wiring ---------------- */
  function hideAllViews() {
    ["corpusView", "evalView", "runView", "compareView"].forEach(function (id) {
      $(id).style.display = "none";
    });
  }

  function applyModeVisibility() {
    if (window.__e2eStructuresActive) {
      hideAllViews();
      return;
    }
    var slot = runSlot(state.mode);
    var baseReady = (
      !state.setLoadPromise &&
      state.loadedSetName !== null &&
      state.loadedSetName === state.setName
    );
    var scopeReady = (
      !state.setLoadPromise &&
      state.loadedSetName === SCOPE_SET
    );
    var runReady = Boolean(
      scopeReady &&
      slot &&
      state.runIndexes[slot] &&
      state.renderedRunSlot === slot
    );
    var compareReady = (
      scopeReady &&
      state.mode === "compare" &&
      Boolean(state.compareIndex)
    );
    $("corpusControls").style.display = state.mode === "corpus" ? "" : "none";
    $("evalControls").style.display = state.mode === "eval" ? "" : "none";
    $("runControls").style.display = slot ? "" : "none";
    $("compareControls").style.display = state.mode === "compare" ? "" : "none";
    $("corpusView").style.display = state.mode === "corpus" && baseReady ? "flex" : "none";
    $("evalView").style.display = state.mode === "eval" && baseReady ? "block" : "none";
    $("runView").style.display = runReady ? "block" : "none";
    $("compareView").style.display = compareReady ? "block" : "none";
    Array.prototype.forEach.call(document.querySelectorAll("#viewToggle button"), function (button) {
      button.classList.toggle("active", button.getAttribute("data-mode") === state.mode);
    });
  }

  function setScopedButtonsDisabled(disabled) {
    RUN_ORDER.forEach(function (slot) {
      $(RUN_REGISTRY[slot].button).disabled = disabled;
    });
    $("modeCompareBtn").disabled = disabled;
  }

  function setMode(mode, options) {
    options = options || {};
    var modeSeq = ++state.modeSeq;
    var previousMode = state.mode;
    var leftStructures = Boolean(window.__e2eStructuresJustClosed);
    window.__e2eStructuresJustClosed = false;
    var wasScoped = isScopedMode(previousMode) || leftStructures;
    var goingScoped = isScopedMode(mode);
    if (wasScoped && mode === "eval") options.keepRunScope = true;
    var targetSlot = runSlot(mode);
    if (targetSlot && (previousMode !== mode || leftStructures)) {
      $("runSearch").value = "";
      $("runStatus").value = "";
    }
    if (mode === "compare" && (previousMode !== "compare" || leftStructures)) {
      $("compareSearch").value = "";
      $("compareFilter").value = "";
    }
    if (mode === "eval" && (previousMode !== "eval" || leftStructures)) {
      $("evalSearch").value = "";
      Array.prototype.forEach.call(document.querySelectorAll("#facetFilters .facet-select"), function (select) {
        select.value = "";
      });
    }
    if (targetSlot && targetSlot !== state.renderedRunSlot) {
      state.renderedRunSlot = null;
    }
    if (goingScoped && !wasScoped) state.priorSetName = state.setName;
    state.mode = mode;

    if (goingScoped) {
      $("setSelect").disabled = true;
      $("scopeNote").style.display = "block";
      applyModeVisibility();
      var scopeReady = state.loadedSetName === SCOPE_SET && !state.setLoadPromise
        ? Promise.resolve()
        : loadSet(SCOPE_SET);
      return scopeReady.then(function (loaded) {
        if (
          loaded === false ||
          state.loadedSetName !== SCOPE_SET ||
          modeSeq !== state.modeSeq ||
          state.mode !== mode
        ) {
          return;
        }
        applyModeVisibility();
        var slot = runSlot(mode);
        return slot ? loadRun(slot) : loadCompare();
      });
    }

    $("setSelect").disabled = false;
    $("scopeNote").style.display = "none";
    var restore = wasScoped && !options.keepRunScope ? state.priorSetName : null;
    if (options.keepRunScope) state.priorSetName = null;
    if (restore) state.priorSetName = null;
    if (restore) {
      return loadSet(restore).then(function (loaded) {
        if (
          loaded &&
          state.loadedSetName === restore &&
          modeSeq === state.modeSeq &&
          state.mode === mode
        ) {
          applyModeVisibility();
        }
      });
    }
    applyModeVisibility();
    if (mode === "corpus") renderCorpus();
    if (mode === "eval") filterEval();
    return Promise.resolve();
  }

  function renderFooter() {
    var manifest = currentManifest() || {};
    $("sidebarFooter").innerHTML =
      "Universe <b>" + esc(manifest.label) + "</b> · " + (manifest.n_docs || 0) +
      " people · " + (manifest.n_questions || 0) + " questions<br>" +
      '<a href="https://github.com/kilian-group/phantom-wiki" target="_blank" rel="noopener">GitHub</a> · ' +
      '<a href="https://huggingface.co/datasets/kilian-group/phantom-wiki-v1" target="_blank" rel="noopener">HF dataset</a> · ' +
      '<a href="https://arxiv.org/abs/2502.20377" target="_blank" rel="noopener">paper</a>';
  }

  function wire() {
    $("setSelect").addEventListener("change", function () { loadSet(this.value); });
    Array.prototype.forEach.call(document.querySelectorAll("#viewToggle button"), function (button) {
      button.addEventListener("click", function () { setMode(this.getAttribute("data-mode")); });
    });

    $("corpusFilter").addEventListener("input", filterCorpus);
    $("docSelect").addEventListener("change", function () {
      state.corpusIdx = parseInt(this.value, 10) || 0;
      renderCorpus();
    });
    $("corpusPrevBtn").addEventListener("click", function () {
      if (state.corpusIdx > 0) { state.corpusIdx--; renderCorpus(); }
    });
    $("corpusNextBtn").addEventListener("click", function () {
      if (state.corpusIdx < state.corpusView.length - 1) { state.corpusIdx++; renderCorpus(); }
    });

    $("evalSearch").addEventListener("input", filterEval);
    $("questionSelect").addEventListener("change", function () {
      state.evalIdx = parseInt(this.value, 10) || 0;
      renderEval();
    });
    $("evalPrevBtn").addEventListener("click", function () {
      if (state.evalIdx > 0) { state.evalIdx--; renderEval(); }
    });
    $("evalNextBtn").addEventListener("click", function () {
      if (state.evalIdx < state.evalView.length - 1) { state.evalIdx++; renderEval(); }
    });

    $("runSearch").addEventListener("input", function () {
      var slot = runSlot(state.mode);
      if (slot) state.runIdx[slot] = 0;
      filterRun();
    });
    $("runStatus").addEventListener("change", function () {
      var slot = runSlot(state.mode);
      if (slot) state.runIdx[slot] = 0;
      filterRun();
    });
    $("runQidSelect").addEventListener("change", function () {
      var slot = runSlot(state.mode);
      if (!slot) return;
      state.runIdx[slot] = parseInt(this.value, 10) || 0;
      renderRun(slot);
    });
    $("runPrevBtn").addEventListener("click", function () {
      var slot = runSlot(state.mode);
      if (slot && state.runIdx[slot] > 0) { state.runIdx[slot]--; renderRun(slot); }
    });
    $("runNextBtn").addEventListener("click", function () {
      var slot = runSlot(state.mode);
      if (slot && state.runIdx[slot] < (state.runViews[slot] || []).length - 1) {
        state.runIdx[slot]++;
        renderRun(slot);
      }
    });

    $("compareSearch").addEventListener("input", function () {
      state.compareIdx = 0;
      filterCompare();
    });
    $("compareFilter").addEventListener("change", function () {
      state.compareIdx = 0;
      filterCompare();
    });
    $("compareQidSelect").addEventListener("change", function () {
      state.compareIdx = parseInt(this.value, 10) || 0;
      renderCompare();
    });
    $("comparePrevBtn").addEventListener("click", function () {
      if (state.compareIdx > 0) { state.compareIdx--; renderCompare(); }
    });
    $("compareNextBtn").addEventListener("click", function () {
      if (state.compareIdx < state.compareView.length - 1) { state.compareIdx++; renderCompare(); }
    });

    document.addEventListener("keydown", function (event) {
      var tag = (event.target.tagName || "").toLowerCase();
      if (tag === "input" || tag === "select" || tag === "textarea") return;
      if (event.key !== "ArrowLeft" && event.key !== "ArrowRight") return;
      var suffix = event.key === "ArrowLeft" ? "PrevBtn" : "NextBtn";
      if (state.mode === "corpus") $("corpus" + suffix).click();
      else if (state.mode === "eval") $("eval" + suffix).click();
      else if (state.mode === "compare") $("compare" + suffix).click();
      else $("run" + suffix).click();
    });
  }

  if (window.marked && marked.setOptions) marked.setOptions({ gfm: true, breaks: true });
  setScopedButtonsDisabled(true);
  wire();
  loadManifests().catch(function (error) {
    $("loading").style.display = "block";
    $("loading").textContent = "Failed to load data: " + error;
  });
})();