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

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

const char* server = "http://api.thingspeak.com/update";
String apiKey = "UJU3TD9RKR9BBWGZ";

int potPin = 34;

unsigned long lastSendTime =0;
const unsigned long sendInterval = 500;

void setup (){
  Serial.begin(115200);
  delay(10);

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

void loop(){
  int sensorValue = analogRead(potPin);

  Serial.print("Potentiometer Value");
  Serial.println(sensorValue);
  delay(2000);

  if(millis()- lastSendTime>=sendInterval){
    if (WiFi.status()==WL_CONNECTED){
      HTTPClient http;
      String url = String(Server) + "?api_key=" + apikey + "&field1" +String(sensorValue);
      http.begin(url);
      int respondCode = http.GET();
      if (responseCode > 0){
        Serial.print("ThingSpeak response code: ");
        Serial.println(responseCode);
      } else{
        Serial.print("Error sending data. Code:");
        Serial.println(responseCode);
        }
        http.end();
    }
    lastSendTime = millis();
  }
  delay(30);
}