#include <DHTesp.h>
#include <WiFi.h>
#include <ThingSpeak.h>

char ssid[] = "Wokwi-GUEST";
char pass[] = "";  
WiFiClient client;

long myChannelNumber = 2701520;
const char * myWriteAPIKey = "UZBMITXLGQ8IHL9X";

DHTesp dht;
TempAndHumidity data;

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

  dht.setup(18, DHTesp::DHT22); // Setting up the temperature sensor

  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);

  connectToWiFi();
}

void connectToWiFi() {
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect");
    WiFi.begin(ssid, pass); 
    int attempt = 0;
    while (WiFi.status() != WL_CONNECTED && attempt < 20) {
      delay(500);
      Serial.print(".");
      attempt++;
    }
    if (WiFi.status() != WL_CONNECTED) {
      Serial.println("\nFailed to connect. Retrying...");
    } else {
      Serial.println("\nConnected.");
    }
  }
}

void loop() {
  data = dht.getTempAndHumidity();
  Serial.print("Temperature: ");
  Serial.print(data.temperature);
  Serial.println(" °C");

  ThingSpeak.setField(1, data.temperature); // Send temperature data
  int statusCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  if (statusCode == 200) {
    Serial.println("Channel update successful.");
  } else {
    Serial.println("Problem Writing data. HTTP error code :" + String(statusCode));
  }

  delay(10000); // Update every 10 seconds
}