#include <WiFi.h>
#include "DHT.h"
#include <HTTPClient.h>

#define DHTPIN 4
#define DHTTYPE DHT22

const char* ssid = "Wokwi-GUEST";
const char* password = "";

// بيانات ThingSpeak
const char* server = "http://api.thingspeak.com/update";
String apiKey = "EKVRKDHCSFTCC0HJ";  // مفتاح الكتابة من القناة

DHT dht(DHTPIN, DHTTYPE);

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

  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nConnected!");
}

void loop() {
  float t = dht.readTemperature();
  float h = dht.readHumidity();

  if (!isnan(t) && !isnan(h)) {
    Serial.printf("Temp: %.2f °C  Humidity: %.2f %%\n", t, h);
    sendToThingSpeak(t, h);
  } else {
    Serial.println("فشل قراءة الحساس!");
  }

  delay(20000); // ThingSpeak يقبل تحديث كل 15 ثانية على الأقل
}

void sendToThingSpeak(float t, float h) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = server;
    url += "?api_key=" + apiKey;
    url += "&field1=" + String(t);
    url += "&field2=" + String(h);

    http.begin(url);
    int httpCode = http.GET();
    if (httpCode > 0) {
      Serial.printf("ThingSpeak response: %d\n", httpCode);
    } else {
      Serial.println("Error sending to ThingSpeak!");
    }
    http.end();
  }
}