#include <DHT.h>

#define DHTPIN 32 // Pin, an dem der DHT22-Sensor angeschlossen ist
#define DHTTYPE DHT22 // DHT22 (AM2302) Sensor

const int pin = 12;
const int pinWlanLedOn = 27;
const int pinWlanLedOff = 14;
const int pinContact = 13;

DHT dht(DHTPIN, DHTTYPE);

// Shows the WLAN led (active = green, inactive = red)
void setWlanLed(bool on) {
  if (on) {
    if (digitalRead(pinWlanLedOn) == LOW) {
      digitalWrite(pinWlanLedOn, HIGH);
    }
    if (digitalRead(pinWlanLedOff) == HIGH) {
      digitalWrite(pinWlanLedOff, LOW);
    }
  } else {
    if (digitalRead(pinWlanLedOn) == HIGH) {
      digitalWrite(pinWlanLedOn, LOW);
    }
    if (digitalRead(pinWlanLedOff) == LOW) {
      digitalWrite(pinWlanLedOff, HIGH);
    }
  }
}

// Shows the Contact led (if DHT sends HIGH)
void setContactLed(bool on) {
  if (on) {
    if (digitalRead(pinContact) == LOW) {
      digitalWrite(pinContact, HIGH);
    }
  } else {
    if (digitalRead(pinContact) == HIGH) {
      digitalWrite(pinContact, LOW);
    }
  }
}

float* readDHT() {
  float *result = new float[2];
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (isnan(humidity) || isnan(temperature)) {
    result[0] = -1;
    result[1] = -1;
  } else {
    result[0] = temperature;
    result[1] = humidity;
  }

  return result;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");

  pinMode(pin, INPUT); // Setzt den Pin-Modus auf Eingang mit internem Pullup-Widerstand
  pinMode(pinContact, OUTPUT);
  pinMode(pinWlanLedOn, OUTPUT); // Setzt den Pin-Modus auf Eingang mit internem Pullup-Widerstand
  pinMode(pinWlanLedOff, OUTPUT); // Setzt den Pin-Modus auf Eingang mit internem Pullup-Widerstand
  
}

void loop() {
  // put your main code here, to run repeatedly:

  int inputValue = digitalRead(pin);
  Serial.print("Input value: ");
  Serial.println(inputValue);

  setWlanLed(true);
    delay(1000); // this speeds up the simulation

  setWlanLed(false);
    delay(1000); // this speeds up the simulation

  float *measurements = readDHT();
  Serial.print("Temperature: ");
  Serial.print(measurements[0]);
  Serial.print(" *C, Humidity: ");
  Serial.print(measurements[1]);
  Serial.println(" %");

  delete[] measurements;

  setContactLed(true);
}