#include <WiFi.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";  
#include <DHTesp.h>
DHTesp gayathri;
TempAndHumidity data;
 const int trigger = 13;
 const int echo = 12;
void setup() {
  Serial.begin(115200);
WiFi.mode(WIFI_STA);
 gayathri .setup(18, DHTesp::DHT22);
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
}
int finding_distance() {
  digitalWrite(trigger, HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
  float  a= pulseIn(echo, HIGH);
  return (a* 0.034 / 2);
}
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);
    }
  }
  data = gayathri.getTempAndHumidity();
  int distance = finding_distance();
  if (data.temperature > 70 && data.humidity < 30 && distance < 200)
   {
    digitalWrite(2, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(17, LOW);
    Serial.println("You are in danger");
  } 
  else if (data.temperature >= 30 && data.temperature <= 70 
           && data.humidity >= 30 && data.humidity <= 70 && distance <= 300 && distance >= 200)
   {
    digitalWrite(2, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(17, LOW);
    Serial.println("You are unsafe");
  } 
  else if (data.temperature < 30 && data.humidity > 70 && distance > 300)
  {
    digitalWrite(2, LOW);
    digitalWrite(4, LOW);
    digitalWrite(17, HIGH);
    Serial.println("You are safe");
  }
  else
  {
    digitalWrite(2, LOW);
    digitalWrite(4, LOW);
    digitalWrite(17, LOW);
  }
  Serial.print("Humidity : ");
  Serial.println(data.humidity);
  Serial.print("Temperature : ");
  Serial.println(data.temperature);
  Serial.print("Distance : ");
  Serial.println(distance);
  Serial.println("-----------------");
  delay(1000);
}