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

#define DHTPIN 4
#define DHTTYPE DHT22

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

String apiKey = "0OKYBZXX2RFMDGCE";
//String apiKey = "Q0LA8NB6ZAL2IWGU";
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 to WiFi");
}

void loop() {

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  Serial.print("Temperature: ");
  Serial.println(temperature);

  Serial.print("Humidity: ");
  Serial.println(humidity);

  if (WiFi.status() == WL_CONNECTED) {

    HTTPClient http;

    String url = "http://api.thingspeak.com/update?api_key=" + apiKey +
                 "&field1=" + String(temperature) +
                 "&field2=" + String(humidity);

    http.begin(url);
    int httpCode = http.GET();

    Serial.print("ThingSpeak response: ");
    Serial.println(httpCode);

    http.end();
  }

  delay(15000);   // ThingSpeak minimum delay
}