#!/usr/bin/env node
/**
 * ObsiGate - JSDOM tests for the search results facets panel (#157):
 * vault, tag and file-extension facets rendered by
 * `renderAdvancedSearchResults()` (frontend/js/search.js).
 *
 * Covers:
 *   - the three facet groups are rendered (Vaults / Tags / Extensions)
 *   - the extensions facet appears even when tags and vaults are empty
 *   - clicking an extension replaces any `ext:` operator in the search
 *     input and triggers a new search
 *
 * Usage: node tests/frontend/search-facets.test.mjs
 */

import { strict as assert } from "node:assert";
import { JSDOM } from "jsdom";
import { fileURLToPath, pathToFileURL } from "node:url";
import path from "node:path";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const JS_DIR = path.resolve(__dirname, "..", "..", "frontend", "js");

const dom = new JSDOM(
  `<!DOCTYPE html>
<html><body>
  <input id="search-input" value="" />
  <select id="vault-filter"><option value="all">all</option></select>
  <div id="results-bar" style="display:none"></div>
  <span id="rb-count"></span>
  <div id="content-area"></div>
</body></html>`,
  { url: "http://localhost/", pretendToBeVisual: true },
);

const w = dom.window;
globalThis.window = w;
globalThis.document = w.document;
globalThis.HTMLElement = w.HTMLElement;
globalThis.Element = w.Element;
globalThis.Node = w.Node;
globalThis.Event = w.Event;
globalThis.CustomEvent = w.CustomEvent;
globalThis.KeyboardEvent = w.KeyboardEvent;
globalThis.localStorage = w.localStorage;
globalThis.sessionStorage = w.sessionStorage;
Object.defineProperty(globalThis, "navigator", {
  value: w.navigator,
  configurable: true,
  writable: true,
});
globalThis.MutationObserver = w.MutationObserver;
globalThis.getComputedStyle = w.getComputedStyle.bind(w);
globalThis.requestAnimationFrame = (cb) => setTimeout(cb, 0);
globalThis.cancelAnimationFrame = (id) => clearTimeout(id);

let testCount = 0;
let passCount = 0;

async function test(name, fn) {
  testCount++;
  try {
    await fn();
    passCount++;
    console.log(`  ✓ ${name}`);
  } catch (err) {
    console.error(`  ✗ ${name}\n    ${err.message}`);
    process.exitCode = 1;
  }
}

// Backend payload shape for /api/search/advanced (facets only matter here).
const PAYLOAD = {
  results: [],
  total: 0,
  offset: 0,
  limit: 50,
  query_time_ms: 1,
  facets: {
    vaults: { IT: 4, Recettes: 2 },
    tags: { linux: 3 },
    extensions: { md: 5, pdf: 2, xlsx: 1 },
  },
};

globalThis.fetch = async () => ({
  ok: true,
  status: 200,
  json: async () => PAYLOAD,
});

const { renderAdvancedSearchResults } = await import(
  pathToFileURL(path.join(JS_DIR, "search.js")).href
);

const facetGroups = () =>
  Array.from(document.querySelectorAll(".search-facets__group"));
const extGroup = () =>
  document.querySelector('.search-facets__group[data-facet="extensions"]');
const extItems = () =>
  Array.from(extGroup()?.querySelectorAll(".search-facets__item") || []);

console.log("Search facets (#157) — Vaults / Tags / Extensions");

await test("renders the three facet groups", async () => {
  renderAdvancedSearchResults(PAYLOAD, "python", null);
  assert.equal(facetGroups().length, 3, "vault, tag and extension groups");
  const labels = facetGroups().map((g) =>
    g.querySelector(".search-facets__label").textContent,
  );
  assert.deepEqual(labels, ["Vaults", "Tags", "Extensions"]);
});

await test("lists extensions with their counts", async () => {
  const texts = extItems().map((i) => i.textContent.trim());
  assert.deepEqual(texts, [".md 5", ".pdf 2", ".xlsx 1"]);
  assert.equal(
    extItems()[0].querySelector(".facet-count").textContent,
    "5",
    "count lives in .facet-count",
  );
});

await test("extension facet shows even with empty tags and vaults", async () => {
  renderAdvancedSearchResults(
    { ...PAYLOAD, facets: { vaults: {}, tags: {}, extensions: { md: 1 } } },
    "",
    null,
  );
  assert.ok(extGroup(), "extensions group rendered alone");
  assert.equal(extItems().length, 1);
});

await test("clicking an extension adds the ext: operator", async () => {
  document.getElementById("search-input").value = "python ext:md";
  renderAdvancedSearchResults(PAYLOAD, "python", null);
  extItems()[1].click(); // .pdf
  assert.equal(
    document.getElementById("search-input").value,
    "python ext:pdf",
    "existing ext: operator replaced, not duplicated",
  );
});

// ── Summary ──
console.log(`\n${passCount}/${testCount} tests passed`);
if (passCount !== testCount) {
  process.exit(1);
}