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

const int DHT_PIN = 15;
const int LED_PIN = 13;
const float TEMP_THRESHOLD = 25.0;
DHTesp dht;

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

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  dht.setup(DHT_PIN, DHTesp::DHT22);


  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("Échec d'allocation de l'écran OLED"));
    for(;;);
  }

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

void loop() {
  TempAndHumidity data = dht.getTempAndHumidity();
  
  if (isnan(data.temperature) || isnan(data.humidity)) {
    Serial.println("Échec de la lecture du DHT22 !");
    display.clearDisplay();
    display.setCursor(0, 0);
    display.println("Erreur de lecture");
    display.display();
    delay(2000);
    return;
  }

  Serial.println("Température : " + String(data.temperature, 2) + "°C");
  Serial.println("Humidité : " + String(data.humidity, 1) + "%");

  display.clearDisplay();
  display.setCursor(0, 0);
  display.println("Temperature: " + String(data.temperature, 2) + " C");
  display.println("Humidity: " + String(data.humidity, 1) + " %");

  if (data.temperature < TEMP_THRESHOLD) {
    digitalWrite(LED_PIN, HIGH);
    display.println("Heating: ON");
  } else {
    digitalWrite(LED_PIN, LOW);
    display.println("Heating: OFF");
  }

  display.display();
  delay(2000);
}