#include <DHTesp.h>

DHTesp dhtsensor;
TempAndHumidity data;

#include <WiFi.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
WiFi.mode(WIFI_STA);
}

int trigger=12;
int echo=14;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trigger,OUTPUT);
  pinMode(echo,INPUT);
  pinMode(21, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(2, OUTPUT);
  dhtsensor.setup(18, DHTesp::DHT22);
}

void loop() { 
  
  if(WiFi.status() != WL_CONNECTED)
  {
  Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED)
    {
    WiFi.begin(ssid, pass); 
    Serial.print(".");
    delay(5000);
    }
  Serial.println("\nConnected.");
  } 
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}

void loop() {
data = dhtsensor.getTempAndHumidity();
int actual_distance=ultrasonic();
Serial.println(actual_distance);
  Serial.println("Humi : " + String(data.humidity));
  Serial.println("Temp : " + String(data.temperature));
  Serial.println("-----------------");
  delay(1000);
if(actual_distance>=300 && data.temperature>=50 && data.humidity<=20){   //41,306,15
digitalWrite(21, HIGH);
digitalWrite(4, LOW);
digitalWrite(2, LOW);
Serial.println("you are safe");
}
else if(actual_distance>=200 && actual_distance<=300 && data.temperature>20 && data.temperature<50 && data.humidity>20 && data.humidity<50){ 
digitalWrite(21, LOW);
digitalWrite(4, HIGH);
digitalWrite(2, LOW);
Serial.println("you are unsafe");
}
else if(actual_distance<=200 && data.temperature<20 && data.humidity>50){
digitalWrite(4, LOW);
digitalWrite(2, HIGH);
digitalWrite(21, LOW);
Serial.println("you are danger");
}
else{
digitalWrite(4, LOW);
digitalWrite(2, LOW);
digitalWrite(21, LOW);
}

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

}