import { ipcMain } from 'electron';
import * as fs from 'fs';
import * as path from 'path';
import os from 'os';

ipcMain.handle('check-keys', async (event, userId) => {
  try {
    // Determine base directory based on OS
    let baseDir;
    if (process.platform === 'win32') {
      baseDir = path.join(os.homedir(), 'AppData', 'Roaming', 'ultima');
    } else if (process.platform === 'linux') {
      baseDir = path.join(os.homedir(), '.ultima');
    } else if (process.platform === 'darwin') {
      baseDir = path.join(os.homedir(), 'Library', 'Application Support', 'Ultima');
    }

    // Define file paths
    const userDir = path.join(baseDir, 'Sessions', userId);
    const epkFilePath = path.join(userDir, 'epk.txt');
    const derivedKeyFilePath = path.join(userDir, 'derivedKey.txt');

    if (fs.existsSync(epkFilePath) && fs.existsSync(derivedKeyFilePath)) {
      return { exists: true };
    } else {
      return { exists: false };
    }
  } catch (error) {
    return { exists: false, error: error.message };
  }
});