#include <DHTesp.h>

int trigger = 4;
int echo = 5;
int red = 12;
int orange = 27;
int green = 25;
int buzzer = 26; // Assuming you have a buzzer connected to pin 26

DHTesp dht22;
TempAndHumidity data;

int finding_distance() {
  digitalWrite(trigger, HIGH);
  delayMicroseconds(10); // Change to 10 microseconds for better accuracy
  digitalWrite(trigger, LOW);
  float a = pulseIn(echo, HIGH);
  return (a * 0.034 / 2);
}

void setup() {
  Serial.begin(115200);
  pinMode(trigger, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(red, OUTPUT);
  pinMode(orange, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(buzzer, OUTPUT);
  dht22.setup(18, DHTesp::DHT22);
}

void loop() {
  data = dht22.getTempAndHumidity();
  float tempdata = data.temperature;
  float humdata = data.humidity;
  int distance = finding_distance();

  if (tempdata <= 30 && humdata > 70 && distance > 300) { 
    //42,80,306
    digitalWrite(green, HIGH);
    digitalWrite(orange, LOW);
    digitalWrite(red, LOW);
    digitalWrite(buzzer, LOW);
    Serial.println("You Are Safe");
  } else if (tempdata > 30 && tempdata <= 70 && humdata >= 30 && humdata <= 70 && distance >= 200 && distance <= 300) {
    digitalWrite(green, LOW);
    digitalWrite(orange, HIGH);
    digitalWrite(red, LOW);
    digitalWrite(buzzer, LOW);
    Serial.println("You Are Unsafe");
  } else if (tempdata > 70 && humdata < 30 && distance < 200) {
    digitalWrite(green, LOW);
    digitalWrite(orange, LOW);
    digitalWrite(red, HIGH);
    digitalWrite(buzzer, HIGH); // Turn on the buzzer
    Serial.println("You Are in Danger");
  } else 
  {    
    digitalWrite(green, LOW);
    digitalWrite(orange, HIGH);
    digitalWrite(red, LOW);
    }
    
  delay(2000); 
}