#include "UsbKeyboard.h"

#define BUTTON_SHUT 8
#define BUTTON_RESTART 9
#define BUTTON_PW 10
#define BUTTON_TAB 11

byte ledPin = 13;

void setup() {
  pinMode(ledPin, OUTPUT);
  digitalWrite (ledPin, HIGH);

  pinMode(BUTTON_SHUT, INPUT_PULLUP);
  pinMode(BUTTON_RESTART, INPUT_PULLUP);
  pinMode(BUTTON_PW, INPUT_PULLUP);
  pinMode(BUTTON_TAB, INPUT_PULLUP);


  TIMSK0&=!(1<<TOIE0);
  cli();// disabilita l'interrupt

  usbDeviceDisconnect();
  delayMs(250);
  usbDeviceConnect();

  sei();//riabilita l'interrupt
}

void loop() {
  UsbKeyboard.update();

  //Riavvio Windows
  if(digitalRead(BUTTON_RESTART) == LOW) {
    UsbKeyboard.sendKeyStroke(KEY_F4, MOD_ALT_LEFT);
    delay(1000);
    UsbKeyboard.sendKeyStroke(KEY_ARROW_LEFT);
    delay(1000);
    UsbKeyboard.sendKeyStroke(KEY_ENTER);
    digitalWrite(ledPin, !digitalRead(ledPin));
  }

  //Spegnimento Windows
  if(digitalRead(BUTTON_SHUT) == LOW) {
    UsbKeyboard.sendKeyStroke(KEY_F4, MOD_ALT_LEFT);
    delay(1000);
    UsbKeyboard.sendKeyStroke(KEY_ENTER);
    digitalWrite(ledPin, !digitalRead(ledPin));
  }

  //PW di inizio
  if(digitalRead(BUTTON_PW) == LOW) {
    UsbKeyboard.sendKeyStroke(KEY_ENTER);
    delay(2000);
    UsbKeyboard.sendKeyStroke(KEY_ARROW_UP);
    UsbKeyboard.sendKeyStroke(KEY_Y);
    UsbKeyboard.sendKeyStroke(KEY_T);
    UsbKeyboard.sendKeyStroke(KEY_ENTER);
    digitalWrite(ledPin, !digitalRead(ledPin));
  }

  //Cambiare finestre
  if(digitalRead(BUTTON_TAB) == LOW) {
    UsbKeyboard.sendKeyStroke(MOD_ALT_LEFT);
    UsbKeyboard.sendKeyStroke(KEY_TAB, MOD_ALT_LEFT);
    delay(10);
    UsbKeyboard.sendKeyStroke(MOD_ALT_LEFT);
    delay(1000);
    UsbKeyboard.sendKeyStroke(KEY_ARROW_RIGHT, MOD_ALT_LEFT);
    UsbKeyboard.sendKeyStroke(KEY_ARROW_RIGHT, MOD_ALT_LEFT);
    digitalWrite(ledPin, !digitalRead(ledPin));
  }
}

void delayMs(unsigned int ms){
  for(int i = 0; i<ms; i++) delayMicroseconds(1000);
}