#include <WiFi.h>  // For ESP32, or use ESP8266WiFi.h for ESP8266
#include <HTTPClient.h>

const char* ssid = "Wokwi-GUEST";  // Default WiFi in Wokwi
const char* password = "";         // No password required

const char* apiKey = "U76AB7WUHQ3N799A";  // Replace with your ThingSpeak Write API Key
const char* server = "http://api.thingspeak.com/update";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);

  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("\nWiFi Connected!");
}

void loop() {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = String(server) + "?api_key=" + apiKey + "&field1=" + random(20, 30); // Example: Sending random temperature

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

    if (httpResponseCode > 0) {
      Serial.println("Data sent to ThingSpeak: " + String(httpResponseCode));
    } else {
      Serial.println("Failed to send data!");
    }
    http.end();
  } else {
    Serial.println("WiFi Disconnected!");
  }

  delay(20000);  // Send data every 20 seconds
}