#include "DHTesp.h"
#include "WiFi.h"

WiFiClient client;

const int SensorPin = 25;
DHTesp DHTsensor;

String thinkspeakaddress = "api.thingspeak.com";
String request_string;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.disconnect();
  WiFi.begin("Wokwi-GUEST","");
  while(WiFi.status() != WL_CONNECTED){
    delay(300);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi Connected");
  Serial.println("IP Address");
  Serial.println(WiFi.localIP());
  DHTsensor.setup(SensorPin, DHTesp::DHT22);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(1000);
  TempAndHumidity data = DHTsensor.getTempAndHumidity();

  float t = data.temperature;
  float h = data.humidity;

  SendingData_thinkspeak(t, h);

  if(isnan(h) || isnan(t)){
    Serial.print("Failed to get the data from the sensor");
    Serial.println("Check sensor before processing");
    return;
  }
}

  void SendingData_thinkspeak(float temp, float hum){
    if(client.connect("api.thingspeak.com",80)){

      request_string = "/update?";
      request_string += "key=";
      request_string += "NVLN322BXMC8WNZP";
      request_string += "&";
      request_string += "field1";
      request_string += "=";
      request_string += temp;

      Serial.println(String("GET") + request_string + "HTTP/1.1\r\n" + 
      "Host:" + thinkspeakaddress + "\r\n" +
      "Connection: close\r\n\r\n");

      client.print(String("GET") + request_string + "HTTP/1.1\r\n" + 
      "Host:" + thinkspeakaddress + "\r\n" +
      "Connection: close\r\n\r\n");
      delay(6000);

      unsigned long timeout = millis();
      while(client.available()==0){
        if(millis() - timeout > 5000){
          Serial.println(">>>>Client Timeout");
          client.stop();
          return;
        }
        }
        while(client.available()){
          String line = client.readStringUntil('\r');
          Serial.print(line);
        }
        Serial.println();
        Serial.println("closing the connection");
        
      }
    }