#include <DHTesp.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

#define pinDHT 26

DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(pinDHT, DHTesp::DHT22);

  pinMode(18, OUTPUT);
  pinMode(4, OUTPUT);
  
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("Failed to start SSD1306 OLED"));
    while (true);
  }
  
  oled.clearDisplay();
  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  Serial.println("Hello, ESP32!");
}

void loop() {
  delay(1000); 
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temp = data.temperature;
  float hum = data.humidity;

  if (isnan(hum) || isnan(temp)) {
    Serial.println(F("Pembacaan sensor DHT tidak berhasil"));
    return;
  }
  Serial.print("Kelembaban: ");
  Serial.println(hum);
  Serial.print("Suhu: ");
  Serial.println(temp);
  
  oled.clearDisplay();

  if (temp > 30) {
    oled.setCursor(0, 5);
    oled.print("WARNING!");
    oled.setCursor(0, 20);  
    oled.println("SUHU TINGGI!");
    oled.display();
  }
  
  if (hum < 20) {
    oled.setCursor(0, 35);
    oled.print("WARNING!");
    oled.setCursor(0, 50);
    oled.println("KELEMBABAN RENDAH!");
    oled.display();
  }

  if (temp > 20) {
    digitalWrite(18, HIGH);
  } else {
    digitalWrite(18, LOW);
  }

  if (hum > 30) {
    digitalWrite(4, HIGH);
  } else {
    digitalWrite(4, LOW);
  }

  // oled.setCursor(0, 0);
  // oled.print("TEMP: ");
  // oled.print(temp);
  // oled.print(" C");
  
  // oled.setCursor(0, 10);
  // oled.print("HUM: ");
  // oled.print(hum);
  // oled.print(" %");
  
  oled.display();
}