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

#define dht_pin 15
#define dht_type DHT22
DHT dht(dht_pin, dht_type);

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

String bURL="https://api.thingspeak.com/update?api_key=LGMMLP5WIIQ1GV3N&field1=0";
String field2 ="&field2";

int temp = 0;
int humid= 0;

void setup() {
  Serial.begin(115200);
  delay(500);
  Serial.println("Upload data on thingspeak server!!!");
  dht.begin();
  delay(500);
  ConnectToWifi();
}

void loop() {
  temp=dht.readTemperature();
  humid = dht.readHumidity();
  if(isnan(temp)||isnan(humid))
  {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  String msg="weather temperature "+String(temp)+"°C"+"  humidity " +String(humid)+"%";
  Serial.println(msg);
  delay(500);
  makeGETRequest();
  Serial.println("Data uploaded sucessfuly");
  delay(20000);

}

void ConnectToWifi()
{
  Serial.println("Conecting to wifi......");
  WiFi.begin(ssid,pass);
  while(WiFi.status()!= WL_CONNECTED)
  {
    delay(1000);
    Serial.println("Connecting....");
  }
  Serial.println("Connected");
}

void makeGETRequest()
{
  String url = bURL + String(temp)+ field2 +String(humid);
  Serial.print("sending GET request to:");
  Serial.println(url);

  HTTPClient http;
  http.begin(url);

  int httpCode = http.GET();

  if (httpCode >0)
  {
    String payload = http.getString();
    Serial.print(payload);
  }
  else
  {
    Serial.print("[HTTP] Get.... Failed, error :%s\n");
    Serial.print(http.errorToString(httpCode).c_str());
  }
  http.end();
}