import { app } from "electron";
import { existsSync, readFileSync, writeFileSync } from "node:fs";
import { join } from "node:path";

type DesktopSettings = { downloadFolder: string };

const SETTINGS_FILE = join(app.getPath("userData"), "settings.json");

function defaults(): DesktopSettings {
  return { downloadFolder: join(app.getPath("music"), "Aurora SpotiRip") };
}

export function loadSettings(): DesktopSettings {
  try {
    if (existsSync(SETTINGS_FILE)) {
      return { ...defaults(), ...JSON.parse(readFileSync(SETTINGS_FILE, "utf8")) };
    }
  } catch {
  }
  return defaults();
}

export function saveSettings(changes: Partial<DesktopSettings>) {
  const next = { ...loadSettings(), ...changes };
  writeFileSync(SETTINGS_FILE, JSON.stringify(next, null, 2));
  applySettings(next);
  return next;
}

export function applySettings(settings = loadSettings()) {
  process.env.SPOTIRIP_DOWNLOAD_FOLDER = settings.downloadFolder;
}