#include<WiFi.h>
#include <DHTesp.h>
#include <ThingSpeak.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

WiFiClient client;
long myChannelNumber =  2616934;
const char * myWriteAPIKey = "JOMSEGNCV19HHOTC";
int statusCode;


DHTesp akhila;
TempAndHumidity data;
int trig = 27;
int echo = 26;
float distance ;
  
void setup() {
  
 ThingSpeak.begin(client);
 Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(19, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(23, OUTPUT);
  akhila.setup(18,DHTesp::DHT22);
}

int sensor()
{
  digitalWrite(trig, LOW);
  delay(10);
  digitalWrite(trig, HIGH);
  delay(100);
  digitalWrite(trig, LOW);
  distance=pulseIn(echo, HIGH);
  return(distance * 0.034/2+1);
}

void loop() {
  digitalWrite(22, LOW);
  digitalWrite(23, LOW);

  ThingSpeak.setField(1, data.temperature);
   ThingSpeak.setField(2, data.humidity);
    ThingSpeak.setField(3, sensor());

  statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);

if(statusCode == 200) { //successful writing code
Serial.println("Channel update successful.");
}
else {
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
}
  
 if(WiFi.status()!=WL_CONNECTED)
 {
  Serial.print("Attempting to connect");
  while(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print(".");
    WiFi.begin(ssid,pass);
    delay(5000);
  }
Serial.println("\n CONNECTED");
 }
 delay(10);

 if(data.humidity<=35 && data.temperature>=25)
  {
    tone(19,5000);
    digitalWrite(23, HIGH);
    delay(100);
    digitalWrite(23, LOW);
    delay(100);
    noTone(19);
  
    if(sensor()>=12)
    {
      tone(19,5000);
      digitalWrite(22, HIGH);
      delay(100);
      digitalWrite(22, LOW);
      delay(100);
      noTone(19);
    }
    else{
      digitalWrite(22, HIGH);
      delay(100);
      digitalWrite(22, LOW);
      delay(100);
    }
  }
  else
  {
    digitalWrite(23, LOW);
  }
  

  data = akhila.getTempAndHumidity();
  Serial.println("Humidity :" +String(data.humidity));
  Serial.println("Temperature :" +String(data.temperature));
  Serial.println("Distance :" +String(sensor()));
  Serial.println("*********************");
  delay(1000);
}