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

#define DHTPIN 4           // Digital pin connected to the DHT sensor / 4? 2?
#define DHTTYPE DHT22     // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);  // Initialize DHT sensor

int redPin = 3;           // Red LED connected to digital pin 3
int greenPin = 4;         // Green LED connected to digital pin 4
int yellowPin = 5;        // Yellow LED connected to digital pin 5
int buzzerPin = 6;        // Buzzer connected to digital pin 6
int photoPin = A0;        // Photoresistor connected to analog pin A0
int joyPinX = A1;         // Joystick X-axis connected to analog pin A1
int joyPinY = A2;         // Joystick Y-axis connected to analog pin A2

Servo servo;              // Create servo object to control the window

LiquidCrystal_I2C lcd(0x27,16,2);  // Initialize LCD screen

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  servo.attach(9);         // Attach servo to pin 9
  lcd.init();              // Initialize LCD screen
  lcd.backlight();
  dht.begin();             // Initialize DHT sensor
}

void loop() {
  float humidity = dht.readHumidity();    // Read humidity from DHT sensor
  float temperature = dht.readTemperature();    // Read temperature from DHT sensor
  int lightLevel = analogRead(photoPin);  // Read light level from photoresistor
  int joyX = analogRead(joyPinX);         // Read joystick X-axis value
  int joyY = analogRead(joyPinY);         // Read joystick Y-axis value
  
  // Check if light level is high enough
  if (lightLevel >= 700) {
    digitalWrite(yellowPin, HIGH);  // Turn on yellow LED
  }
  else {
    digitalWrite(yellowPin, LOW);   // Turn off yellow LED
  }
  
  // Check temperature range and turn on appropriate LED
  if ((temperature >= 5) && (temperature <= 25)) {
    digitalWrite(greenPin, HIGH);   // Turn on green LED
    digitalWrite(redPin, LOW);      // Turn off red LED
  }
  else if (temperature >= 25) {
    digitalWrite(greenPin, LOW);    // Turn off green LED
    digitalWrite(redPin, HIGH);     // Turn on red LED
  }
  else {
    digitalWrite(greenPin, LOW);    // Turn off green LED
    digitalWrite(redPin, HIGH);     // Turn on red LED
  }
  
  // Check humidity and turn on/off buzzer
  if (humidity >= 60) {
    digitalWrite(buzzerPin, HIGH);  // Turn on buzzer
  }
  else {
    digitalWrite(buzzerPin, LOW);   // Turn off buzzer
  }
  
  // Move servo with joystick
  int servoPos = map(joyX, 0, 1023, 0, 180);  // Map joystick X-axis value to servo position
  servo.write(servoPos);                      // Move servo to mapped position
  
  // Display readings on LCD screen
  lcd.setCursor(0,0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print("C  ");
  lcd.setCursor(0,1);
  lcd.print("Humidity: ");
  lcd.print(humidity);
  lcd.print("%  ");
  lcd.setCursor(0,2);
  lcd.print("Light level: ");
  lcd.print(lightLevel);
  lcd.print("  ");
  
  delay(1000);  // Wait for 1 second before checking again
}