#include <ESP32Servo.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>

Servo servo;

#define OLED_ADDR 0x3C
Adafruit_SSD1306 display(128, 64, &Wire, -1);

#define DHT_PIN 13     // GPIO Pin for DHT sensor
#define DHT_TYPE DHT22 // DHT sensor type, choose DHT11, DHT22, or DHT21
DHT dht(DHT_PIN, DHT_TYPE);

void setup() {
  servo.attach(18);  // GPIO Pin for Servo
  servo.write(0);
  delay(2000);

  Serial.begin(9600);

  // Initialize the OLED display
  if (!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }
  display.display(); // Display startup message
  delay(2000);
  display.clearDisplay();

  // Initialize the DHT sensor
  dht.begin();
}

void loop() {
  // Reads the temperature and humidity from the DHT sensor
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Prints the temperature and humidity on the Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Humidity: ");
  Serial.print(humidity);
  Serial.println("%");

  display.clearDisplay();
  display.setTextSize(1);  // Adjust text size
  display.setTextColor(SSD1306_WHITE);

  // Rotate the servo motor in a 360-degree loop when humidity reaches 75 percent and above
  if (humidity >= 75.0) {
    for (int angle = 0; angle <= 360; angle += 10) {
      servo.write(angle);
      delay(50); // Adjust the delay as needed
    }
  } else {
    servo.write(0);
  }

  display.setCursor(0, 0);  // Adjust text position
  display.print("Temp: ");
  display.print(temperature);
  display.setCursor(0, 10);  // Move to the next line
  display.print("Humid: ");
  display.print(humidity);
  display.print("%");

  display.display();

  delay(0);
}