#include <DHTesp.h>

DHTesp dhtsensor;
TempAndHumidity data;

#include <WiFi.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";


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);
   Serial.begin(115200);
  WiFi.mode(WIFI_STA);
}

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);
  if (WiFi.status() != WL_CONNECTED)
  {
    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;

}