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to-do / export.js

rodopsin

Bulut dağıtımı: libSQL/Turso + Docker (HF Spaces)

483e583 3 months ago

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	import fs from "fs";
	import { marked } from "marked";
	import puppeteer from "puppeteer-core";

	// ---- Locate a Chrome/Chromium/Edge binary for PDF rendering ----
	export function findChrome() {
	const candidates = [
	process.env.CHROME_PATH,
	"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
	"/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary",
	"/Applications/Chromium.app/Contents/MacOS/Chromium",
	"/Applications/Microsoft Edge.app/Contents/MacOS/Microsoft Edge",
	"/usr/bin/google-chrome",
	"/usr/bin/chromium-browser",
	"/usr/bin/chromium",
	].filter(Boolean);
	return candidates.find((p) => {
	try { return fs.existsSync(p); } catch { return false; }
	});
	}

	// ---- Safe file name for downloads / zip entries ----
	export function safeName(s, fallback = "not") {
	const clean = String(s \|\| "")
	.replace(/[\/\\?%*:\|"<>]/g, "-")
	.replace(/\s+/g, " ")
	.trim();
	return clean \|\| fallback;
	}

	// Build "Parent/Child" folder path for a category id
	export function categoryPath(catId, flatCats) {
	const byId = new Map(flatCats.map((c) => [c.id, c]));
	const parts = [];
	let cur = byId.get(catId);
	let guard = 0;
	while (cur && guard++ < 10) {
	parts.unshift(safeName(cur.name));
	cur = cur.parent_id ? byId.get(cur.parent_id) : null;
	}
	return parts.join("/");
	}

	// ---- One note -> Markdown ----
	export function noteToMarkdown(note, path = "") {
	const lines = [`# ${note.title}`, ""];
	const meta = [];
	if (path) meta.push(`Klasör: ${path}`);
	if (note.pinned) meta.push("📌 Sabitlenmiş");
	meta.push(`Güncelleme: ${fmt(note.updated_at)}`);
	lines.push(meta.join(" \n"), "", "---", "");
	lines.push(note.content \|\| "_(boş)_", "");
	return lines.join("\n") + "\n";
	}

	function fmt(d) {
	if (!d) return "-";
	return new Date(d.replace(" ", "T")).toLocaleString("tr-TR", {
	day: "2-digit", month: "long", year: "numeric", hour: "2-digit", minute: "2-digit",
	});
	}

	function escapeHtml(s) {
	return String(s ?? "").replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">");
	}

	// ---- Notes -> printable HTML (markdown content rendered) ----
	export function notesToHtml(notes, pathFn, title = "Bilgi Merkezi") {
	const body = notes
	.map((n) => {
	const path = pathFn(n.category_id);
	return `
	<article class="note">
	<h2>${escapeHtml(n.title)}${n.pinned ? ' <span class="pin">📌</span>' : ""}</h2>
	<div class="meta">${path ? "📁 " + escapeHtml(path) + " · " : ""}Güncelleme: ${escapeHtml(fmt(n.updated_at))}</div>
	<div class="content">${marked.parse(n.content \|\| "_(boş)_")}</div>
	</article>`;
	})
	.join("\n");

	return `<!DOCTYPE html><html lang="tr"><head><meta charset="utf-8">
	<style>
	* { box-sizing: border-box; }
	body { font-family: -apple-system, "Helvetica Neue", Arial, sans-serif; color: #1a1d27; margin: 0; padding: 32px 40px; font-size: 13px; line-height: 1.6; }
	h1.doc { font-size: 24px; margin: 0 0 4px; }
	.doc-sub { color: #6b7280; font-size: 12px; margin-bottom: 24px; }
	article.note { padding: 18px 22px; border: 1px solid #e5e7eb; border-radius: 12px; margin-bottom: 16px; break-inside: avoid; }
	article.note h2 { font-size: 17px; margin: 0 0 4px; color: #111827; }
	.meta { color: #6b7280; font-size: 11px; margin-bottom: 12px; }
	.content { color: #1f2433; }
	.content h1,.content h2,.content h3 { font-size: 14px; margin: 12px 0 6px; }
	.content ul,.content ol { padding-left: 20px; margin: 6px 0; }
	.content code { background: #f3f4f6; padding: 1px 5px; border-radius: 4px; font-size: 12px; }
	.content pre { background: #f3f4f6; padding: 12px; border-radius: 8px; overflow-x: auto; }
	.content blockquote { border-left: 3px solid #c7c9d1; margin: 8px 0; padding-left: 12px; color: #4b5563; }
	.rem { margin-top: 12px; border-top: 1px dashed #e5e7eb; padding-top: 8px; }
	.rem h3 { font-size: 12px; margin: 0 0 4px; color: #6b7280; text-transform: uppercase; letter-spacing: .05em; }
	.rem ul { margin: 0; padding-left: 18px; font-size: 12px; color: #4b5563; }
	.pin { font-size: 13px; }
	</style></head>
	<body>
	<h1 class="doc">${escapeHtml(title)}</h1>
	<div class="doc-sub">${notes.length} not · ${new Date().toLocaleDateString("tr-TR", { day: "2-digit", month: "long", year: "numeric" })}</div>
	${body \|\| "<p>Not bulunamadı.</p>"}
	</body></html>`;
	}

	// ---- Minimal dependency-free ZIP (stored / no compression) ----
	const CRC_TABLE = (() => {
	const t = new Uint32Array(256);
	for (let n = 0; n < 256; n++) {
	let c = n;
	for (let k = 0; k < 8; k++) c = c & 1 ? 0xedb88320 ^ (c >>> 1) : c >>> 1;
	t[n] = c >>> 0;
	}
	return t;
	})();
	function crc32(buf) {
	let c = 0xffffffff;
	for (let i = 0; i < buf.length; i++) c = CRC_TABLE[(c ^ buf[i]) & 0xff] ^ (c >>> 8);
	return (c ^ 0xffffffff) >>> 0;
	}

	// files: [{ name, data: string\|Buffer }] -> Buffer (valid .zip, UTF-8 names)
	export function makeZip(files) {
	const parts = [];
	const central = [];
	let offset = 0;
	for (const f of files) {
	const nameBuf = Buffer.from(f.name, "utf8");
	const data = Buffer.isBuffer(f.data) ? f.data : Buffer.from(f.data, "utf8");
	const crc = crc32(data);

	const local = Buffer.alloc(30);
	local.writeUInt32LE(0x04034b50, 0);
	local.writeUInt16LE(20, 4);
	local.writeUInt16LE(0x0800, 6); // UTF-8 flag
	local.writeUInt16LE(0, 8); // store
	local.writeUInt32LE(0, 10); // time+date
	local.writeUInt32LE(crc, 14);
	local.writeUInt32LE(data.length, 18);
	local.writeUInt32LE(data.length, 22);
	local.writeUInt16LE(nameBuf.length, 26);
	local.writeUInt16LE(0, 28);
	parts.push(local, nameBuf, data);

	const cd = Buffer.alloc(46);
	cd.writeUInt32LE(0x02014b50, 0);
	cd.writeUInt16LE(20, 4);
	cd.writeUInt16LE(20, 6);
	cd.writeUInt16LE(0x0800, 8);
	cd.writeUInt16LE(0, 10);
	cd.writeUInt32LE(0, 12);
	cd.writeUInt32LE(crc, 16);
	cd.writeUInt32LE(data.length, 20);
	cd.writeUInt32LE(data.length, 24);
	cd.writeUInt16LE(nameBuf.length, 28);
	cd.writeUInt32LE(0, 30); // extra+comment len
	cd.writeUInt16LE(0, 34); // disk
	cd.writeUInt16LE(0, 36); // internal attr
	cd.writeUInt32LE(0, 38); // external attr
	cd.writeUInt32LE(offset, 42);
	central.push(cd, nameBuf);

	offset += local.length + nameBuf.length + data.length;
	}
	const centralBuf = Buffer.concat(central);
	const end = Buffer.alloc(22);
	end.writeUInt32LE(0x06054b50, 0);
	end.writeUInt16LE(files.length, 8);
	end.writeUInt16LE(files.length, 10);
	end.writeUInt32LE(centralBuf.length, 12);
	end.writeUInt32LE(offset, 16);
	return Buffer.concat([...parts, centralBuf, end]);
	}

	// ---- HTML -> PDF buffer ----
	export async function htmlToPdf(html) {
	const executablePath = findChrome();
	if (!executablePath) {
	throw new Error("PDF için Chrome bulunamadı. .env içine CHROME_PATH ekleyin.");
	}
	const browser = await puppeteer.launch({
	executablePath,
	headless: "new",
	args: ["--no-sandbox", "--disable-setuid-sandbox", "--disable-dev-shm-usage"],
	});
	try {
	const page = await browser.newPage();
	await page.setContent(html, { waitUntil: "networkidle0" });
	return await page.pdf({
	format: "A4",
	printBackground: true,
	margin: { top: "16mm", bottom: "16mm", left: "14mm", right: "14mm" },
	});
	} finally {
	await browser.close();
	}
	}