import fs from 'node:fs';
import path from 'node:path';
import { app } from 'electron';

export interface DesktopConfig {
  port?: number;
  theme?: 'dark' | 'light' | 'system';
  // BCP-47 locale mirrored from the dashboard (en, zh-CN, fr, es, pt-BR).
  locale?: string;
  // Bind the embedded server to 0.0.0.0 instead of 127.0.0.1 so other devices
  // on the LAN / Tailscale can reach it (#442, #418). Off by default: exposes
  // the API, guarded only by the unified key. Applied at next server start.
  lanAccess?: boolean;
  // App version the "macOS is hiding your menu-bar icon" notice was last shown
  // for (#807). Explaining the fix once per version is enough; the tray can stay
  // hidden for as long as the user wants it hidden.
  trayHiddenNoticeVersion?: string;
  // Show the app in the Dock as well as the menu bar. On by default: the tray
  // icon alone is a poor "is it running?" signal, and macOS 26 can hide it
  // outright (#807). Users who want the lean menu-bar-only look turn it off.
  showInDock?: boolean;
  // Set once the dashboard has been opened at startup to show a first-time
  // Windows user the app is running; the tray icon starts out hidden in the
  // overflow flyout there (#1353).
  launchDashboardShown?: boolean;
}

function configPath(): string {
  return path.join(app.getPath('userData'), 'config.json');
}

export function loadConfig(): DesktopConfig {
  try {
    return JSON.parse(fs.readFileSync(configPath(), 'utf8')) as DesktopConfig;
  } catch {
    return {};
  }
}

export function saveConfig(cfg: DesktopConfig): void {
  try {
    fs.mkdirSync(app.getPath('userData'), { recursive: true });
    fs.writeFileSync(configPath(), JSON.stringify(cfg, null, 2));
  } catch (err) {
    console.warn('[desktop] could not persist config:', err);
  }
}