'use strict';
// App settings (not notes): last vault, theme, window size, folded pages.
const fs = require('node:fs');
const path = require('node:path');

let file = null;
let cache = null;

function location() {
  if (!file) file = path.join(require('electron').app.getPath('userData'), 'settings.json');
  return file;
}

function get() {
  if (cache) return cache;
  try { cache = JSON.parse(fs.readFileSync(location(), 'utf8')); } catch { cache = {}; }
  return cache;
}

let timer = null;
function set(patch) {
  cache = { ...get(), ...patch };
  clearTimeout(timer);
  timer = setTimeout(flush, 200);
  return cache;
}

function flush() {
  clearTimeout(timer);
  if (!cache) return;
  try {
    fs.mkdirSync(path.dirname(location()), { recursive: true });
    fs.writeFileSync(location(), JSON.stringify(cache, null, 2));
  } catch (err) {
    console.error('Could not write settings', err);
  }
}

module.exports = { get, set, flush };