kochwas/src/routes/api/admin/backup/+server.ts

import type { RequestHandler } from './$types';
import { createBackupStream, backupFilename } from '$lib/server/backup/export';
import { DATABASE_PATH, IMAGE_DIR } from '$lib/server/paths';
import { Readable } from 'node:stream';

export const GET: RequestHandler = async () => {
  const archive = createBackupStream({ dbPath: DATABASE_PATH, imagesDir: IMAGE_DIR });
  const filename = backupFilename();
  return new Response(Readable.toWeb(archive) as ReadableStream, {
    status: 200,
    headers: {
      'content-type': 'application/zip',
      'content-disposition': `attachment; filename="${filename}"`
    }
  });
};