#include <OneWire.h>
#include <DallasTemperature.h>
#include "ThingSpeak.h"
#include <WiFi.h>

const int ONE_WIRE_BUS = 21;  
const int LED_PIN = 14;  
const char* WIFI_NAME = "Wokwi-GUEST";  
const char* WIFI_PASSWORD = "";  
const int myChannelNumber = 2510261; 
const char* myApiKey = "05IAPF0JCVQS1CH4"; 
const char* server = "api.thingspeak.com";  

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
WiFiClient client;

void setup() {
  Serial.begin(115200);
  
  pinMode(LED_PIN, OUTPUT);
  
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  
  sensors.begin();
  ThingSpeak.begin(client);
}

void loop() {
  sensors.requestTemperatures();
  float temperature = sensors.getTempCByIndex(0);  
  
  ThingSpeak.setField(1, temperature);
  
  if (temperature > 35 || temperature < 12) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }
  
  int x = ThingSpeak.writeField(myChannelNumber, 1, temperature, myApiKey);
  
  Serial.println("Temp: " + String(temperature, 2) + "°C");
  
  if (x == 200) {
    Serial.println("Data pushed successfully");
  } else {
    Serial.println("Push error: " + String(x));
  }
  
  Serial.println("---");
  

}