#include <Stepper.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <Servo.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define switchPin 2
#define ldrPin A2
#define tempPin 7
#define relayPin 4
#define ledPin 5
#define servoPin 6
const int stepsPerRevolution = 200;
const int dirPin = 9;
const int stepPin = 3;
const int enablePin = 8;
const int potPin = A0;

int currentStep = 0;
const int deadZone = 100; // Increase the dead zone to prevent continuous movement

OneWire oneWire(tempPin);
DallasTemperature sensors(&oneWire);
Servo servo;
LiquidCrystal_I2C lcd(0x27, 16, 2); // Adjust the address to 0x27 (or your specific I2C address)

const int threshold = 500; // Adjust this value based on your LDR readings
const int hysteresis = 50; // Adjust this value to prevent rapid toggling
bool isLightOn = false;

void setup() {
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  pinMode(enablePin, OUTPUT);
  
  digitalWrite(enablePin, LOW);
  Serial.begin(9600);

  pinMode(switchPin, INPUT);
  pinMode(relayPin, OUTPUT);
  pinMode(ledPin, OUTPUT);

  sensors.begin();
  lcd.begin(16, 2);
  lcd.backlight();
}

void loop() {
  int switchState = digitalRead(switchPin);
  int ldrValue = analogRead(ldrPin);
  sensors.requestTemperatures();
  float tempValue = sensors.getTempCByIndex(0);

  if (switchState == HIGH) {
    if (ldrValue < threshold && !isLightOn) {
      digitalWrite(ledPin, HIGH);
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Lights: ON   ");
      isLightOn = true;
    } else if (ldrValue >= threshold && isLightOn) {
      digitalWrite(ledPin, LOW);
      lcd.clear();
      lcd.setCursor(0, 1);
      lcd.print("Lights: OFF  ");
      isLightOn = false;
    }
  }

  if (tempValue > 27) {
    digitalWrite(relayPin, HIGH);
  } else {
    digitalWrite(relayPin, LOW);
  }

  int potValue = analogRead(potPin);
  int targetStep = map(potValue, 0, 1023, -1000, 1000);

  int stepsToMove = targetStep - currentStep;
  Serial.print("Target Step: ");
  Serial.println(targetStep);
  Serial.print("Current Step: ");
  Serial.println(currentStep);
  Serial.print("Steps to Move: ");
  Serial.println(stepsToMove);

  if (abs(stepsToMove) > deadZone) {
    if (stepsToMove > 0) {
      digitalWrite(dirPin, HIGH);
    } else {
      digitalWrite(dirPin, LOW);
      stepsToMove = -stepsToMove;
    }

    for (int i = 0; i < stepsToMove; i++) {
      digitalWrite(stepPin, HIGH);
      delayMicroseconds(1000);
      digitalWrite(stepPin, LOW);
      delayMicroseconds(1000);
    }

    currentStep = targetStep;
  }

  delay(100);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(tempValue);
  lcd.print(" C");

  Serial.print("Temp: ");
  Serial.print(tempValue);
  Serial.print("°C, LDR: ");
  Serial.print(ldrValue);

  if (currentStep < -750) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Curtain Down");
  } else if (currentStep > 800) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Curtain Up");
  }
}