#!/usr/bin/env node import { promises as fs } from "fs"; import path from "path"; import pdf from "pdf-parse"; const ROOT = "public"; const OUT = path.join(ROOT, "index.json"); const EXCERPT_LENGTH = 500; const MAX_HEAD_BYTES = 64 * 1024; function dateFromName(name) { const m = name.match(/^(\d{4}-\d{2}-\d{2})/); return m ? new Date(m[0]).getTime() : null; } async function readHead(abs, fullForExcerpt = false) { const fh = await fs.open(abs, "r"); const bufSize = fullForExcerpt ? await fs.stat(abs).then(st => Math.min(st.size, EXCERPT_LENGTH * 2)) : MAX_HEAD_BYTES; const buf = Buffer.alloc(bufSize); const { bytesRead } = await fh.read(buf, 0, bufSize, 0); await fh.close(); return buf.slice(0, bytesRead).toString("utf8"); } function parseTitle(raw, ext) { if (ext === ".md") return raw.match(/^\s*#\s+(.+?)\s*$/m)?.[1].trim(); if (ext === ".html") return raw.match(/]*>([^<]+)<\/title>/i)?.[1].trim(); return null; } function extractExcerpt(raw, ext) { // Trim headers/metadata for cleaner excerpts if (ext === ".md") raw = raw.replace(/^#.*\n?/, '').trim(); if (ext === ".html") raw = raw.replace(/.*<\/head>/is, '').replace(/<[^>]+>/g, ' ').trim(); return raw.replace(/\s+/g, ' ').slice(0, EXCERPT_LENGTH); } function extractTags(raw, ext, pdfData = null) { let tags = []; if (ext === ".md") { const match = raw.match(/^\s*tags:\s*(.+)$/im); if (match) tags = match[1].split(',').map(t => t.trim().toLowerCase()); } else if (ext === ".html") { const match = raw.match(/ t.trim().toLowerCase()); } else if (ext === ".pdf" && pdfData?.info?.Subject) { tags = pdfData.info.Subject.split(',').map(t => t.trim().toLowerCase()); } return tags; } async function collectFiles(relBase = "", flat = []) { const abs = path.join(ROOT, relBase); const entries = await fs.readdir(abs, { withFileTypes: true }); for (const e of entries) { if (e.name.startsWith(".")) continue; const rel = path.posix.join(relBase, e.name); const absPath = path.join(ROOT, rel); if (e.isDirectory()) { await collectFiles(rel, flat); continue; } const ext = path.posix.extname(e.name).toLowerCase(); if (![".md", ".html", ".pdf"].includes(ext) || e.name === "index.html") continue; const st = await fs.stat(absPath); let raw, pdfData, title; if (ext === ".pdf") { const buffer = await fs.readFile(absPath); pdfData = await pdf(buffer); raw = pdfData.text; title = pdfData.info.Title || e.name.replace(/\.pdf$/, "").trim(); } else { raw = await readHead(absPath, true); title = parseTitle(raw, ext) || e.name.replace(new RegExp(`\\${ext}$`), "").trim(); } const mtime = dateFromName(e.name) ?? st.mtimeMs; const excerpt = extractExcerpt(raw, ext); const tags = extractTags(raw, ext, pdfData); flat.push({ type: "file", name: e.name, title, path: rel, ext, pinned: rel.startsWith("pinned/"), mtime, excerpt, tags }); } return flat; } async function detectSections() { const topEntries = await fs.readdir(ROOT, { withFileTypes: true }); const sections = []; for (const e of topEntries) { if (!e.isDirectory() || e.name.startsWith(".")) continue; const indexPath = path.join(ROOT, e.name, "index.html"); let isStatic = false; try { await fs.access(indexPath); isStatic = true; } catch {} // Check if dynamic (has content files) - but since flat collects them, infer from flat later sections.push({ name: e.name, isStatic }); } return sections.sort((a, b) => a.name.localeCompare(b.name)); // Alpha sort } (async () => { try { const flat = await collectFiles(); const sections = await detectSections(); // Filter sections to those with content or static const activeSections = sections.filter(s => s.isStatic || flat.some(f => f.path.split("/")[0] === s.name)); const allTags = [...new Set(flat.flatMap(f => f.tags))].sort(); await fs.writeFile(OUT, JSON.stringify({ flat, sections: activeSections, tags: allTags }, null, 2)); console.log(`index.json built: ${flat.length} files, ${activeSections.length} sections (${activeSections.filter(s => s.isStatic).length} static), ${allTags.length} tags.`); } catch (e) { console.error("Build failed:", e); process.exit(1); } })();