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

const int DHT_PIN = 15;
const int LED_PIN = 13;

const int GAS_PIN = 34;   // Analog pin for gas sensor
float gasValue=0;
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = 2335883;
const char* myApiKey = "YQFULP2T8XK4913G";
const char* server = "api.thingspeak.com";


DHTesp dhtSensor;
WiFiClient client;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  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()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  
}

void loop() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  ThingSpeak.setField(1, data.temperature);
  ThingSpeak.setField(2, data.humidity);
  
  // Read analog values from the smoke and gas sensors
  
 gasValue = analogRead(GAS_PIN);
  

  

  ThingSpeak.setField(3, gasValue);
  if (data.temperature > 35 || data.temperature < 12 || data.humidity > 70 || data.humidity < 40) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  int x = ThingSpeak.writeFields(myChannelNumber, myApiKey);
  
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  
  Serial.println("Gas Value: " + String(gasValue));
  
  

  if (x == 200) {
    Serial.println("Data pushed successfully");
  } else {
    Serial.println("Push error: " + String(x));
  }
  Serial.println("---");

  delay(10000);
}