#!/usr/bin/env nodeimport fs from "node:fs";import path from "node:path";import { fileURLToPath } from "node:url"; const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");const docsDir = path.join(repoRoot, "docs");const args = process.argv.slice(2);const mode = parseMode(args);const cname = fs.readFileSync(path.join(docsDir, "CNAME"), "utf8").trim();const origin = "https://" + cname;const productName = "CodexBar";const source = "https://github.com/steipete/CodexBar";const outputPath = path.join(docsDir, "llms.txt"); const pages = allHtml(docsDir)  .map((file) => {    const rel = path.relative(docsDir, file).replaceAll(path.sep, "/");    if (rel === "404.html" || rel === "social.html") return null;    const html = fs.readFileSync(file, "utf8");    return {      rel,      title: textContent(html.match(/<title[^>]*>([\s\S]*?)<\/title>/i)?.[1]) || titleize(path.basename(rel, ".html")),      description: attr(html.match(/<meta\s+name=["']description["']\s+content=["']([^"']*)["'][^>]*>/i)?.[1] || ""),    };  })  .filter(Boolean)  .sort((a, b) => (a.rel === "index.html" ? -1 : b.rel === "index.html" ? 1 : a.rel.localeCompare(b.rel)));const productDescription =  pages.find((page) => page.rel === "index.html")?.description ||  "CodexBar shows AI coding-provider usage limits in the macOS menu bar."; const lines = [  "# " + productName,  "",  productDescription,  "",  "Canonical documentation:",  ...pages.map((page) => "- " + page.title + ": " + pageUrl(page.rel) + (page.description ? " - " + page.description : "")),  "",  "Source: " + source,  "",  "Guidance for agents:",  "- Prefer the canonical documentation URLs above over README excerpts or package metadata.",  "- Fetch only the pages needed for the current task; this is an index, not a full-site corpus.",  "",];const output = lines.join("\n"); if (mode === "check") {  const current = fs.existsSync(outputPath) ? fs.readFileSync(outputPath, "utf8") : null;  if (current !== output) {    console.error(`${path.relative(repoRoot, outputPath)} is out of date; run node Scripts/generate-llms.mjs`);    process.exit(1);  }  console.log("llms index OK: " + path.relative(repoRoot, outputPath));} else {  fs.writeFileSync(outputPath, output, "utf8");  console.log("wrote " + path.relative(repoRoot, outputPath));} function parseMode(values) {  if (values.length === 0) return "write";  if (values.length === 1 && (values[0] === "write" || values[0] === "--write")) return "write";  if (values.length === 1 && (values[0] === "check" || values[0] === "--check")) return "check";  console.error("Usage: node Scripts/generate-llms.mjs [write|--write|check|--check]");  process.exit(2);} function allHtml(dir) {  return fs.readdirSync(dir, { withFileTypes: true }).flatMap((entry) => {    const full = path.join(dir, entry.name);    if (entry.name === "node_modules" || entry.name.startsWith(".")) return [];    if (entry.isDirectory()) return allHtml(full);    return entry.name.endsWith(".html") ? [full] : [];  });} function pageUrl(rel) {  return rel === "index.html" ? origin + "/" : origin + "/" + rel;} function textContent(value) {  return attr(value || "").replace(/<[^>]+>/g, "").replace(/\s+/g, " ").trim();} function attr(value) {  return String(value || "")    .replace(/&mdash;/g, "-")    .replace(/&amp;/g, "&")    .replace(/&nbsp;/g, " ")    .replace(/&#39;/g, "'")    .replace(/&quot;/g, '"')    .trim();} function titleize(input) {  return input.replaceAll("-", " ").replace(/\b\w/g, (m) => m.toUpperCase());}