#include <DHTesp.h>

DHTesp Gayathri;
TempAndHumidity data;
 const int trigger = 4;
 const int echo = 5;

void setup() {
  Serial.begin(115200);
  Gayathri.setup(18, DHTesp::DHT22);
  pinMode(12, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(27, 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() {
  data = Gayathri.getTempAndHumidity();
  int distance = finding_distance();

  if (data.temperature > 70 && data.humidity < 30 && distance < 200)
   {
    digitalWrite(12, HIGH);
    digitalWrite(14, LOW);
    digitalWrite(27, 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(12, LOW);
    digitalWrite(14, HIGH);
    digitalWrite(27, LOW);
    Serial.println("You are unsafe");
  } 
  else if (data.temperature < 30 && data.humidity > 70 && distance > 300)
  {
    digitalWrite(12, LOW);
    digitalWrite(14, LOW);
    digitalWrite(27, HIGH);
    Serial.println("You are safe");
  }
  else
  {
    digitalWrite(12, LOW);
    digitalWrite(14, LOW);
    digitalWrite(27, 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);
}