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

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2
#define SDA 17
#define SCL 16
#define ENCODER_CLK 13
#define ENCODER_DT  14
#define ENCODER_SW 27


LiquidCrystal_I2C lcd( I2C_ADDR, LCD_COLUMNS, LCD_LINES);  // Set the I2C address and LCD dimensions
Encoder encoder(ENCODER_CLK, ENCODER_DT);  // Connect rotary encoder pins to A0 and A1

int menuIndex = 1;
int lastClk = HIGH;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");

  //This call for the wire lib, allows the esp32 to establish connection with the pins of the lcd that receives data
  Wire.begin(SDA,SCL);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);

  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  attachInterrupt(digitalPinToInterrupt(ENCODER_CLK), readEncoder, FALLING);

  lcd.print("Arduino Setup");
  delay(2000);
  lcd.clear();
}

void readEncoder() {
  int dtValue = digitalRead(ENCODER_DT);
  if (dtValue == HIGH) {
    Serial.println("Rotated clockwise ⏩");
  }
  if (dtValue == LOW) {
    Serial.println("Rotated counterclockwise ⏪");
  }
}

void loop() {
  lcd.setCursor(0, 0);
  lcd.print("Menu Option: ");
  lcd.setCursor(0, 1);


 //This needs to be improved to better track the values of the encoder
  int newClk = digitalRead(ENCODER_CLK);
  if (newClk != lastClk) {
    // There was a change on the CLK pin
    lastClk = newClk;
    int dtValue = digitalRead(ENCODER_DT);
    if (newClk == LOW && dtValue == HIGH) {
      Serial.println("Rotated clockwise ⏩");
      menuIndex++;
    }
    if (newClk == LOW && dtValue == LOW) {
      Serial.println("Rotated counterclockwise ⏪");
      menuIndex--;
    }
  }

 //
  switch (menuIndex) {
    case 1:
      lcd.print("Option 1");
      break;
    case 2:
      lcd.print("Option 2");
      break;
    case 3:
      lcd.print("Option 3");
      break;
    // Add more cases for additional options as needed
  }

  int encoderValue = encoder.read();
  if (encoderValue == HIGH ) {
    menuIndex = 1;
  } else if (encoderValue == LOW) {
    menuIndex = 2;  // Adjust based on the number of menu options
  } else {
    menuIndex = 3;
  }

  delay(10);  // Adjust the delay based on your application
}