#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

const int buttonPin = 2;
const int ledPin1 = 1;
const int ledPin2 = 3;
const int ledPin3 = 4;
const int numModes = 4;

int currentMode = 0;

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
   
    lcd.init();
  lcd.backlight();
  
  // Print something
  lcd.setCursor(0, 0);
  lcd.print("Workwi Plus+");
  lcd.setCursor(0, 1);
  lcd.print("Light Mode");
  delay(1000);
  lcd.clear();

 
  currentMode = 0;
  updateLEDs();
  updateLCD();

}

void loop() {
  if (digitalRead(buttonPin) == LOW) {
    delay(250);  // Simple debounce
    currentMode = (currentMode + 1) % numModes;
    updateLEDs();
    updateLCD();
  }
}


void updateLEDs() {
  switch (currentMode) {
    case 0:
      digitalWrite(ledPin1, HIGH);
      digitalWrite(ledPin2, LOW);
      digitalWrite(ledPin3, HIGH);
      break;
 
   
      
      
  
      
   
    case 1:
   
       digitalWrite(ledPin1, LOW);
      digitalWrite(ledPin2, HIGH);
      digitalWrite(ledPin3, LOW);
      
      break; 
  
   
   
    case 2:
      digitalWrite(ledPin1, HIGH);
      digitalWrite(ledPin2, HIGH);
      digitalWrite(ledPin3, HIGH);
      break;
  
    case 3:
      digitalWrite(ledPin1, LOW);
      digitalWrite(ledPin2, LOW);
      digitalWrite(ledPin3, LOW);
      break;
     
  }

}
void updateLCD() {
  lcd.setCursor(0, 0);
  lcd.print("Mode: ");
  lcd.print(currentMode + 1);
}