// Small Pithos preferences kept beside s3d.yml (pithos-prefs.json):
// whether s3d should be running, so a restart of the host (Theseus quitting,
// an extension update) brings it back instead of leaving it stopped.

import fs from 'node:fs';
import path from 'node:path';

const FILE = 'pithos-prefs.json';

export function readPrefs(configFile) {
  try { return JSON.parse(fs.readFileSync(path.join(path.dirname(configFile), FILE), 'utf8')) || {}; } catch { return {}; }
}

export function writePrefs(configFile, patch) {
  const next = { ...readPrefs(configFile), ...patch };
  try {
    fs.mkdirSync(path.dirname(configFile), { recursive: true });
    fs.writeFileSync(path.join(path.dirname(configFile), FILE), JSON.stringify(next, null, 2));
  } catch { /* a read-only config folder just means no memory */ }
  return next;
}