#include <TM1637Display.h>
#define CLK 45//1//3
#define DIO 39////2
TM1637Display display = TM1637Display (CLK, DIO);

int IN22 = 15;
int IN23 = 16;
int IN24 = 0;


signed long count = 1; // Changed to 0 so that COUNTUP starts with 1


enum CountStates {idle, COUNTUP, COUNTDOWN, COUNTUPDEC, COUNTDOWNDEC};

CountStates actState  = idle;
CountStates lastState = idle;

unsigned long startTime;
bool holding = false;
bool longPress = false;
int keyHeld;
String msg;

unsigned long startHold = 0;
uint16_t intervalLongPress = 1000;
unsigned long startRepeat = 0;
uint16_t intervalRepeat = 100;



const unsigned long shortWaitTime = 20;
const unsigned long longWaitTime  = 150;

struct pressButtonType 
{
  byte Pin;
  unsigned long lastChange;
  int lastState;
  int state;
  boolean pressed();
};

boolean pressButtonType::pressed() 
{
  int state = digitalRead(pressButtonType::Pin);
  if (state != pressButtonType::lastState) {
    pressButtonType::lastChange = millis();
    pressButtonType::lastState = state;
  }
  if (state != pressButtonType::state && millis() - pressButtonType::lastChange > 50) {
    pressButtonType::state     = state;
  };
  return !pressButtonType::state;
}

signed long StartCountUpDec   = 1;        // Used by COUNTUPDEC when the counting limit has been reached
signed long StartCountDownDec = 500;      // Used by COUNTDOWNDEC when the counting limit has been reached

pressButtonType but22 = {IN22, 0, HIGH};
pressButtonType but23 = {IN23, 0, HIGH};
pressButtonType but24 = {IN24, 0, HIGH};


int buttonValue1;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Hello, ESP32-C3!");

  display.setBrightness(4);

  pinMode(22, INPUT_PULLUP);
  pinMode(23, INPUT_PULLUP);
  pinMode(24, INPUT_PULLUP);

  // Serial.println(count);
  cntDisplay();
}
String ActStartNo = String(count);
boolean Error = false;


void loop() {

  // delay(10); // this speeds up the simulation
  // StateMachine ();

}


void StateMachine ()

{
  static unsigned long lastActionTime = 0;
  static unsigned long WaitTime = longWaitTime;

  switch (actState)
  {
    case idle : if (but22.pressed())
      {
        actState = COUNTUP;
      }
      if (but23.pressed())
      {
        actState = COUNTDOWN;
      }
      if (but24.pressed() && but22.pressed())
      {
        actState = COUNTUPDEC;
      }
      if (but24.pressed() && but23.pressed())
      {
        actState = COUNTDOWNDEC;
      }
      WaitTime       = longWaitTime;
      break;

    case COUNTUP :
      if (but23.pressed()) WaitTime = shortWaitTime;
      else WaitTime = longWaitTime;
      if (but22.pressed()  && millis() - lastActionTime >= WaitTime) // || case 'C')
      {
        lastActionTime = millis();
        if (count < 500)
        {
          count = count + 1;
          cntDisplay();
        }
        else
        {
          count = 1;
          cntDisplay();
        }
      }
      if (!but22.pressed() && !but23.pressed()) actState = idle;
      break;

    case COUNTDOWN :
      if (but22.pressed()) WaitTime = shortWaitTime;
      else WaitTime = longWaitTime;
      if (but23.pressed() && millis() - lastActionTime >= WaitTime)
      {
        lastActionTime = millis();
        if (count > 1)
        {
          count = count - 1;
          cntDisplay();
        }
        else
        {
          count = 500;
          cntDisplay();
        }
      }
      if (!but22.pressed() && !but23.pressed()) actState = idle;
      break;
    //*
    case COUNTUPDEC :
      if (but23.pressed()) WaitTime = shortWaitTime;
      else WaitTime = longWaitTime;
      if (but22.pressed() && millis() - lastActionTime >= WaitTime)
      {
        lastActionTime = millis();
        //if(count+10<100)           // Added (+10) do avoid counting over 100
        count = count + 10;
        if (count > 500)
        {
          count = count - 500;
        }
        cntDisplay();
      }
      if (!but22.pressed() && !but23.pressed()) actState = idle;
      break;

    case COUNTDOWNDEC :
      if (but22.pressed()) WaitTime = shortWaitTime;
      else WaitTime = longWaitTime;

      if (but23.pressed() && millis() - lastActionTime >= WaitTime)
      {

        lastActionTime = millis();
        count = count - 10;
        if (count < 1)
          //                   if(count>=1)// && count<=444)
        {
          count = count + 500;
        }
        cntDisplay();
      }

      if (!but22.pressed() && !but23.pressed()) actState = idle;
      break;

    default : actState = idle;
      break;

  }  //  END of switch (actState)
}


void cntDisplay()
{
  Serial.println(count);
  display.showNumberDec(count);
}