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

 // Pin definitions
 const int DHT_PIN = 15;
 const int LED_PIN = 13;

 // WiFi credentials
 const char * WIFI_NAME = "Wokwi-GUEST";
 const char * WIFI_PASSWORD = "";

 // ThingSpeak configuration
 const int myChannelNumber = 2985824;
 const char * myApiKey = "SS86UPTTUD27OUVC";
 const char * server = "api.thingspeak.com";

 // Object instantiations
 DHTesp dhtSensor ;
 WiFiClient client ;


void setup () {
  // Initialize serial communication
  Serial.begin(115200);

  // Initialize DHT sensor
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  // Initialize LED pin
  pinMode(LED_PIN, OUTPUT);

  // Connect to WiFi
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("WiFi not connected");
  }

  // WiFi connection successful
  Serial.println("WiFi connected!");
  Serial.println("Local IP: " + String(WiFi.localIP()));

  // Set WiFi mode and initialize ThingSpeak
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}
void loop () {
  // Read temperature and humidity data
  TempAndHumidity data = dhtSensor.getTempAndHumidity();

  // Set ThingSpeak fields
  ThingSpeak.setField(1, data.temperature);
  ThingSpeak.setField(2, data.humidity);

  // LED control based on sensor readings
  if (data.temperature > 35 || data.temperature < 12 ||
      data.humidity > 70 || data.humidity < 40) {
    digitalWrite(LED_PIN, HIGH); // Alert condition
  } else {
    digitalWrite(LED_PIN, LOW); // Normal condition
  }

  // Send data to ThingSpeak
  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);

  // Display sensor readings
  Serial.println("Temp: " + String(data.temperature, 2) + " C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  // Check if data was sent successfully
  if (x == 200) {
    Serial.println("Data pushed successfully");
  } else {
    Serial.println("Push error: " + String(x));
  }

  Serial.println("---");
  delay(5000); // Wait 5 seconds before next reading
}