/* Hello Wokwi! */

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
//                    LCD SDA = A0
//                    LCD SDA = A1
const int INPUT_BUTTON_LEFT =   2;
const int INPUT_BUTTON_RIGHT =  A2;
const int ACTION_LED = A3;
//                    LCD SDA = A4
//                    LCD SDA = A5
const int barLEDCount = 10;
const int barLED[] = { 3, 4, 5, 6, 7, 8, 9 , 10, 11, 12 };



int CountMemory = 0;
int CurrentCode;
int timeLeft;
int binaryCode;
int lastButtonStateRight = 0;
int rightbuttonPushed = 0;
int left_buttonPushed = 0;
int buttonPushCounter = 0;
bool counterState = false;
bool islocked = true;

void setup()
{
  Serial.begin(9600);

    for(int i = 0; i < 10; i++)     
    { 
      pinMode(barLED[i],OUTPUT); 
    }
    
    lcd.init();
    lcd.backlight();
    lcd.print("XXXX         XXXXX");
    lcd.setCursor(0, 2); 
    lcd.print("    XXXXXX");
    lcd.setCursor(0, 3); 
    lcd.print("       XXXXXXX  ");
    delay(1000);
    lcd.setCursor(0, 1); 
    lcd.print("  XXXX XXXX");
    lcd.setCursor(0, 2); 
    lcd.print("    LOCKED  ");
    lcd.setCursor(0, 3); 
    lcd.print(" - PRESS ENTER -");
    
  pinMode(INPUT_BUTTON_LEFT, INPUT);
  pinMode(INPUT_BUTTON_RIGHT, INPUT);
  pinMode(ACTION_LED, OUTPUT);
}
  
void loop() {
      int rightbuttonPushed = digitalRead(INPUT_BUTTON_RIGHT);
      int left_buttonPushed = digitalRead(INPUT_BUTTON_LEFT);
      bool lockState = true;
    
      if (rightbuttonPushed && left_buttonPushed) 
        { 
          // this is if the two buttons are pressed
          if (islocked)
          {
            // this is locked
            lcd.setCursor(0, 3); 
            lcd.print("------UNLOCKED------"); 
            counterState = true; 
            lockState = false; 
            delay(1000);
          }
          else
          {
            // this is not locked
            lcd.setCursor(0, 3); 
            lcd.print("------STOPPED------"); 
            counterState = true; 
            lockState = false; 
            delay(1000);}
          }
      
    

    else if (rightbuttonPushed && left_buttonPushed && !lockState && counterState) 
      {
      lcd.clear();
      lcd.setCursor(0, 0); lcd.print("          TIME: 1024"); 
      lcd.setCursor(0, 1); lcd.print("  [0000000000] ");
      lcd.setCursor(0, 2); lcd.print("   CODE: 0 "); 
      lcd.setCursor(0, 3); lcd.print("           -RUNNING-");
    
    for (byte counter =0; counter<=1023; counter++) 
    { 
      displayBinary(counter);  
      lcd.setCursor(9, 2); 
      lcd.print(counter);  
      delay(500); } 
    }
    delay(50);  // Delay for my own sake
  }






void displayBinary(byte numToShow) { for (int i =0;i<10;i++)
  { if (bitRead(numToShow, i)==1) { digitalWrite(barLED[i], HIGH);
              
    }
    else { digitalWrite(barLED[i], LOW); }
  }
}