W3Schools Tryit Editor

const os = require('os');
const fs = require('fs');
const path = require('path');

// Function to determine a good location for app data based on the OS
function getAppDataPath(appName) {
  const platform = os.platform();

let appDataPath;

switch (platform) {
    case 'win32': // Windows
      appDataPath = path.join(process.env.APPDATA || '', appName);
      break;
    case 'darwin': // macOS
      appDataPath = path.join(os.homedir(), 'Library', 'Application Support', appName);
      break;
    case 'linux': // Linux
      appDataPath = path.join(os.homedir(), '.config', appName);
      break;
    default: // Fallback for other platforms
      appDataPath = path.join(os.homedir(), `.${appName}`);
  }

return appDataPath;
}

// Function to get appropriate command based on OS
function getOpenCommand() {
  const platform = os.platform();

switch (platform) {
    case 'win32': // Windows
      return 'start';
    case 'darwin': // macOS
      return 'open';
    default: // Linux and others
      return 'xdg-open';
  }
}

// Example usage
const appName = 'myapp';
const appDataPath = getAppDataPath(appName);
const openCommand = getOpenCommand();

console.log(`OS Platform: ${os.platform()}`);
console.log(`OS Type: ${os.type()}`);
console.log(`Recommended App Data Path: ${appDataPath}`);
console.log(`Open Command: ${openCommand}`);

// Example of platform-specific behavior
console.log('\nPlatform-Specific Actions:');

if (os.platform() === 'win32') {
  console.log('- Using Windows-specific registry functions');
  console.log('- Setting up Windows service');
} else if (os.platform() === 'darwin') {
  console.log('- Using macOS keychain for secure storage');
  console.log('- Setting up launchd agent');
} else if (os.platform() === 'linux') {
  console.log('- Using Linux systemd for service management');
  console.log('- Setting up dbus integration');
}

// Example of checking for available memory and adjusting behavior
const availableMemGB = os.freemem() / (1024 * 1024 * 1024);
console.log(`\nAvailable Memory: ${availableMemGB.toFixed(2)} GB`);

if (availableMemGB < 0.5) {
  console.log('Low memory mode activated: reducing cache size and disabling features');
} else if (availableMemGB > 4) {
  console.log('High memory mode activated: increasing cache size and enabling all features');
} else {
  console.log('Standard memory mode activated: using default settings');
}

// Example of CPU core detection for parallel processing
const cpuCount = os.cpus().length;
console.log(`\nCPU Cores: ${cpuCount}`);

const recommendedWorkers = Math.max(1, cpuCount - 1); // Leave one core for the system
console.log(`Recommended worker processes: ${recommendedWorkers}`);