snow-editor

small markdown and org-mode editor
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utils.js (1398B)

      1 import crypto from 'crypto';
      2 
      3 export const LOCK_TTL_MS = 2 * 60 * 1000;
      4 export const MAX_CONTENT_BYTES = 1024 * 1024;
      5 
      6 export function secureToken() {
      7   return crypto.randomBytes(32).toString('hex');
      8 }
      9 
     10 export function newId() {
     11   return crypto.randomUUID();
     12 }
     13 
     14 export function parseExpiresIn(expiresIn) {
     15   const now = Date.now();
     16   switch (expiresIn) {
     17     case '1h':
     18       return new Date(now + 60 * 60 * 1000).toISOString();
     19     case '24h':
     20       return new Date(now + 24 * 60 * 60 * 1000).toISOString();
     21     case '7d':
     22       return new Date(now + 7 * 24 * 60 * 60 * 1000).toISOString();
     23     case '30d':
     24       return new Date(now + 30 * 24 * 60 * 60 * 1000).toISOString();
     25     case 'never':
     26       return null;
     27     default:
     28       return undefined;
     29   }
     30 }
     31 
     32 export function isExpired(expiresAt) {
     33   if (expiresAt == null) return false;
     34   return Date.parse(expiresAt) <= Date.now();
     35 }
     36 
     37 export function assertMode(mode) {
     38   return mode === 'markdown' || mode === 'org';
     39 }
     40 
     41 export function getContentByteLength(content) {
     42   return Buffer.byteLength(content ?? '', 'utf8');
     43 }
     44 
     45 export function assertContentSize(content) {
     46   return getContentByteLength(content) <= MAX_CONTENT_BYTES;
     47 }
     48 
     49 export function lockExpiresAtFromNow() {
     50   return new Date(Date.now() + LOCK_TTL_MS).toISOString();
     51 }
     52 
     53 export function sendError(res, status, error, message) {
     54   return res.status(status).json({ error, message });
     55 }