#include <DHTesp.h>
DHTesp dht;
TempAndHumidity data;
int distance();
int trigger=4;
int echo=5;
int r = 25;
int o = 33;
int g = 32;
int buzzer = 26;
void setup() {
 
  pinMode(r, OUTPUT);
  pinMode(o, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  dht.setup(18,DHTesp::DHT22);
}

void loop() {
  
  noTone(buzzer);
  data = dht.getTempAndHumidity();
  float data2 = distance();
  Serial.println("Temerature : "+String(data.temperature));
  Serial.println("humidity : "+String(data.humidity));
  Serial.println("Distance : "+String(data2));

   if (data.temperature<=30 && data.humidity >=70 && data2 >=300) {
    digitalWrite(g, HIGH);
    digitalWrite(o, LOW);
    digitalWrite(r, LOW);
    Serial.println("You are safe");
  } else if ((data.humidity>30 && data.humidity<70) && (data2>200 && data2<300)&&(data.temperature>30 && data.temperature<70)) {
    digitalWrite(g, LOW);
    digitalWrite(o, HIGH);
    digitalWrite(r, LOW);
    Serial.println("You are unsafe");
  } else if (data.temperature >=70 && data.humidity <=30 && data2 <=200) {
    digitalWrite(g, LOW);
    digitalWrite(o, LOW);
    digitalWrite(r, HIGH);
    Serial.println("You are in danger");
    tone(buzzer,5000);
  }
    else
  {
    digitalWrite(r,LOW);
    digitalWrite(o,LOW);
    digitalWrite(g,LOW);
  }
  delay(1000);
}

int distance()
{
  digitalWrite(trigger, HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
  float a = pulseIn(echo,HIGH);
  return(a*0.034/2);
}