1import fs from 'node:fs';
2import path from 'node:path';
3import { mkdir, writeFile } from 'node:fs/promises';
4 
5import { Endpoint, Headers } from '../constants.js';
6import { AuthError } from '../exceptions.js';
7import { cookie_header, extract_set_cookie_value, fetch_with_timeout } from './http.js';
8import { resolveGeminiWebDataDir } from './paths.js';
9 
10export async function rotate_1psidts(cookies: Record<string, string>, _proxy?: string | null): Promise<string | null> {
11  const p = resolveGeminiWebDataDir();
12  await mkdir(p, { recursive: true });
13 
14  const sid = cookies['__Secure-1PSID'];
15  if (!sid) throw new Error('Missing __Secure-1PSID cookie.');
16 
17  const cachePath = path.join(p, `.cached_1psidts_${sid}.txt`);
18 
19  try {
20    const st = fs.statSync(cachePath);
21    if (Date.now() - st.mtimeMs <= 60_000) return null;
22  } catch {}
23 
24  const res = await fetch_with_timeout(Endpoint.ROTATE_COOKIES, {
25    method: 'POST',
26    headers: { ...Headers.ROTATE_COOKIES, Cookie: cookie_header(cookies) },
27    body: '[000,"-0000000000000000000"]',
28    redirect: 'follow',
29    timeout_ms: 30_000,
30  });
31 
32  if (res.status === 401) throw new AuthError('Failed to refresh cookies (401).');
33  if (!res.ok) throw new Error(`RotateCookies failed: ${res.status} ${res.statusText}`);
34 
35  const setCookie = res.headers.get('set-cookie');
36  const v = extract_set_cookie_value(setCookie, '__Secure-1PSIDTS');
37  if (v) {
38    await writeFile(cachePath, v, 'utf8');
39    return v;
40  }
41 
42  return null;
43}
44 
45export const rotate1psidts = rotate_1psidts;
46 
47