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

// ---------- OLED Configuration ----------
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET    -1
#define OLED_ADDRESS  0x3C

// ---------- DHT22 Configuration ----------
#define DHT_PIN 15

// Objects
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
DHTesp dht;

void setup() {
  Serial.begin(115200);

  // Initialize DHT22
  dht.setup(DHT_PIN, DHTesp::DHT22);

  // Initialize I2C (ESP32 default pins)
  Wire.begin(21, 22);

  // Initialize OLED
  if (!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDRESS)) {
    Serial.println("OLED initialization failed!");
    while (true);
  }

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);

  display.setCursor(0, 0);
  display.println("DHT22 Sensor");
  display.println("Initializing...");
  display.display();

  delay(2000);
}

void loop() {
  TempAndHumidity data = dht.getTempAndHumidity();

  // --------- SERIAL MONITOR OUTPUT (ADDED) ---------
  Serial.println("ESP32 + DHT22");
  Serial.print("Temperature: ");
  Serial.print(data.temperature);
  Serial.println(" °C");

  Serial.print("Humidity   : ");
  Serial.print(data.humidity);
  Serial.println(" %");
  Serial.println("----------------------");
  // ------------------------------------------------

  display.clearDisplay();
  display.setCursor(0, 0);

  display.println("ESP32 + DHT22");
  display.println("----------------");

  display.print("Temp: ");
  display.print(data.temperature);
  display.println(" C");

  display.print("Hum : ");
  display.print(data.humidity);
  display.println(" %");

  display.display();

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