#include <AdafruitSensor.h>
#include <DHT.h>
#include <Adafruit_SSD1306.h>
#include <Wire.h>

#define DHTPIN 4       // Pin connected to the DHT22 sensor
#define DHTTYPE DHT22  // Change to DHT11 if you're using a DHT11 sensor

DHT dht(DHTPIN, DHTTYPE);

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET    -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

const int greenLedPin = 23; // GPIO23 for the green LED
const int redLedPin = 19;   // GPIO19 for the red LED

void setup() {
  // Initialize DHT sensor
  dht.begin();

  // Initialize the display
  if(!display.begin(SSD1306_I2C_ADDRESS, OLED_RESET)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  display.display();
  delay(2000); // Pause for 2 seconds

  // Initialize LEDs
  pinMode(greenLedPin, OUTPUT);
  pinMode(redLedPin, OUTPUT);
}

void loop() {
  // Read temperature and humidity from DHT22
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // Display data on the OLED
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Temp: ");
  display.print(temperature);
  display.print(" C");
  display.setCursor(0, 10);
  display.print("Humidity: ");
  display.print(humidity);
  display.print(" %");
  display.display();

  // Control LEDs based on temperature
  if (temperature > 30.0) {
    digitalWrite(greenLedPin, HIGH); // Turn on green LED
    digitalWrite(redLedPin, LOW);   // Turn off red LED
  } else {
    digitalWrite(greenLedPin, LOW);   // Turn off green LED
    digitalWrite(redLedPin, HIGH);    // Turn on red LED
  }

  delay(2000); // Update every 2 seconds
}