const DATASET_ERROR = "Could not load snapshot JSON. Open the dataset: https://huggingface.co/datasets/HashgraphOnline/hol-plugin-security";

const PLUGIN_COLS = ["slug","display_name","developer_name","category","trust_score","safety_label","scanner_grade","score_security","score_mcp_posture","findings_high","findings_total","github_stars","mcp_server_count","skill_count","version","ecosystems","scanner_provider","owner_verified","publisher_verified","snapshot_at","description","repository","profile_url"];
const ADV_COLS = ["owasp_mcp","owasp_mcp_name","slug","title","severity","threat_class","summary","surfaces","url","date_modified","curated"];
const FIX_COLS = ["scenario_id","scenario_family","harness_id","comparator","outcome","receipt_created","modeled","harness_independent","median_latency_ms","p95_latency_ms","run_id","schema_version"];

function unique(rows, key) {
  return [...new Set(rows.map(r => String(r[key] ?? "")).filter(Boolean))].sort();
}

function paginate(rows, page, size) {
  const pages = Math.max(1, Math.ceil(rows.length / size));
  page = Math.min(Math.max(1, page), pages);
  const start = (page - 1) * size;
  return { slice: rows.slice(start, start + size), page, pages, n: rows.length, start, end: Math.min(start + size, rows.length) };
}

function searchFilter(rows, q) {
  q = (q || "").trim().toLowerCase();
  if (!q) return rows;
  return rows.filter(r => Object.values(r).some(v => String(v).toLowerCase().includes(q)));
}

function eqFilter(rows, key, value) {
  if (!value || value === "(all)") return rows;
  return rows.filter(r => String(r[key]) === value);
}

function sortRows(rows, key, dir) {
  const copy = rows.slice();
  copy.sort((a, b) => {
    const va = a[key], vb = b[key];
    const na = Number(va), nb = Number(vb);
    let cmp;
    if (va !== "" && vb !== "" && va != null && vb != null && !Number.isNaN(na) && !Number.isNaN(nb)) cmp = na - nb;
    else cmp = String(va).localeCompare(String(vb), undefined, { numeric: true, sensitivity: "base" });
    return dir === "desc" ? -cmp : cmp;
  });
  return copy;
}

function el(tag, attrs, html) {
  const n = document.createElement(tag);
  if (attrs) Object.entries(attrs).forEach(([k, v]) => {
    if (k === "class") n.className = v;
    else n.setAttribute(k, v);
  });
  if (html != null) n.innerHTML = html;
  return n;
}

function renderTable(table, rows, cols) {
  table.innerHTML = "";
  const thead = el("thead");
  const tr = el("tr");
  cols.forEach(c => tr.appendChild(el("th", { "data-col": c }, c)));
  thead.appendChild(tr);
  const tbody = el("tbody");
  rows.forEach(r => {
    const row = el("tr");
    cols.forEach(c => {
      const v = r[c];
      const td = el("td");
      const s = v == null ? "" : String(v);
      if (typeof v === "string" && s.startsWith("http")) {
        const a = el("a", { href: s, target: "_blank", rel: "noopener" });
        a.textContent = s.replace(/^https?:\/\//, "").slice(0, 64);
        td.appendChild(a);
      } else td.textContent = s;
      row.appendChild(td);
    });
    tbody.appendChild(row);
  });
  table.appendChild(thead);
  table.appendChild(tbody);
}

function bindTable(opts) {
  const state = { q: "", filters: {}, page: 1, size: opts.pageSize, sortKey: opts.sortKey, sortDir: opts.sortDir || "desc" };
  const controls = document.getElementById(opts.controlId);
  const status = document.getElementById(opts.statusId);
  const table = document.getElementById(opts.tableId);

  const search = el("input", { type: "search", placeholder: "Search…" });
  search.addEventListener("input", () => { state.q = search.value; state.page = 1; draw(); });
  controls.appendChild(search);

  opts.filterKeys.forEach(key => {
    const sel = el("select");
    sel.appendChild(el("option", { value: "(all)" }, key + ": all"));
    unique(opts.rows, key).forEach(v => sel.appendChild(el("option", { value: v }, v)));
    sel.addEventListener("change", () => { state.filters[key] = sel.value; state.page = 1; draw(); });
    controls.appendChild(sel);
  });

  const sizeSel = el("select");
  opts.sizes.forEach(s => sizeSel.appendChild(el("option", { value: String(s) }, String(s) + " / page")));
  sizeSel.value = String(opts.pageSize);
  sizeSel.addEventListener("change", () => { state.size = Number(sizeSel.value); state.page = 1; draw(); });
  controls.appendChild(sizeSel);

  const prev = el("button", { type: "button" }, "Prev");
  const next = el("button", { type: "button" }, "Next");
  prev.addEventListener("click", () => { state.page -= 1; draw(); });
  next.addEventListener("click", () => { state.page += 1; draw(); });
  controls.appendChild(prev);
  controls.appendChild(next);

  table.addEventListener("click", (e) => {
    const th = e.target.closest("th");
    if (!th) return;
    const key = th.getAttribute("data-col");
    if (state.sortKey === key) state.sortDir = state.sortDir === "asc" ? "desc" : "asc";
    else { state.sortKey = key; state.sortDir = "desc"; }
    draw();
  });

  function draw() {
    let rows = searchFilter(opts.rows, state.q);
    Object.entries(state.filters).forEach(([k, v]) => { rows = eqFilter(rows, k, v); });
    if (state.sortKey) rows = sortRows(rows, state.sortKey, state.sortDir);
    const pg = paginate(rows, state.page, state.size);
    state.page = pg.page;
    status.textContent = pg.n + " rows · page " + pg.page + "/" + pg.pages + " · showing " + (pg.n ? pg.start + 1 : 0) + "–" + pg.end + (state.sortKey ? " · sort " + state.sortKey + " " + state.sortDir : "");
    renderTable(table, pg.slice, opts.cols);
  }
  draw();
}

document.querySelectorAll(".tabs button").forEach(btn => {
  btn.addEventListener("click", () => {
    document.querySelectorAll(".tabs button").forEach(b => b.classList.remove("active"));
    document.querySelectorAll(".panel").forEach(p => p.classList.remove("active"));
    btn.classList.add("active");
    document.getElementById(btn.dataset.tab).classList.add("active");
  });
});

async function loadJSON(path) {
  const res = await fetch(path);
  if (!res.ok) throw new Error(path + " HTTP " + res.status);
  return res.json();
}

(async () => {
  try {
    const [plugins, advisories, runtime] = await Promise.all([
      loadJSON("data/plugins.json"),
      loadJSON("data/advisories.json"),
      loadJSON("data/runtime_fixtures.json"),
    ]);
    bindTable({
      rows: plugins, cols: PLUGIN_COLS, controlId: "plugin-controls", statusId: "plugin-status", tableId: "plugin-table",
      filterKeys: ["safety_label", "scanner_grade", "category"], pageSize: 50, sizes: [25, 50, 100, 205],
      sortKey: "trust_score", sortDir: "desc"
    });
    bindTable({
      rows: advisories, cols: ADV_COLS, controlId: "advisory-controls", statusId: "advisory-status", tableId: "advisory-table",
      filterKeys: ["owasp_mcp", "severity", "threat_class"], pageSize: 22, sizes: [22, 50],
      sortKey: "owasp_mcp", sortDir: "asc"
    });
    bindTable({
      rows: runtime, cols: FIX_COLS, controlId: "runtime-controls", statusId: "runtime-status", tableId: "runtime-table",
      filterKeys: ["scenario_family", "harness_id", "comparator", "outcome"], pageSize: 50, sizes: [25, 50, 100, 220],
      sortKey: "scenario_id", sortDir: "asc"
    });
  } catch (err) {
    const box = document.querySelector("header");
    const p = document.createElement("div");
    p.className = "note";
    p.innerHTML = "<strong>Dataset load error.</strong> " + DATASET_ERROR + "<br/><code></code>";
    p.querySelector("code").textContent = String(err);
    box.appendChild(p);
  }
})();