#define BLYNK_TEMPLATE_ID "TMPL6ZAG02pzM"
#define BLYNK_TEMPLATE_NAME "tugas mentoring"
#define BLYNK_AUTH_TOKEN "ww3dtyHZh1VW2gUQyIsJ8jCcYIraoCB_"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

#define BLYNK_DYNAMIC
#include <Blynk/BlynkApi.h>

#define DHTPIN 15
#define TRIG_PIN 25
#define ECHO_PIN 26
#define BUTTON_PIN 2
#define LED_PIN 18 

DHT dht(DHTPIN, DHT22);

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

BlynkTimer timer;

BLYNK_WRITE(V4) {
  int ledState = param.asInt();  // Mendapatkan nilai dari widget Blynk
  digitalWrite(LED_PIN, ledState);
}

void sendSensorData() {
  float temperature = dht.readTemperature();
  Serial.print("Temperature (C): ");
  Serial.println(temperature);
  
  float fahrenheit = (temperature * 9 / 5) + 32;
  float kelvin = temperature + 273.15;

  Blynk.virtualWrite(V0, distanceCM());
  Blynk.virtualWrite(V1, temperature);
  Blynk.virtualWrite(V2, fahrenheit);
  Blynk.virtualWrite(V3, kelvin);
}

void toggleLED() {
  if (digitalRead(BUTTON_PIN) == HIGH) {
    int currentLEDState = !digitalRead(LED_PIN);
    digitalWrite(LED_PIN, currentLEDState);
    Blynk.virtualWrite(V4, currentLEDState);
  }
}

void setup() {
  Serial.begin(115200);

  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUTTON_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);

  Blynk.begin(auth, ssid, pass);
  dht.begin();

  timer.setInterval(2000L, sendSensorData);
  attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), toggleLED, RISING);
}

void loop() {
  Blynk.run();
  timer.run();
}

float distanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = (duration * 0.0343) / 2;

  return distance;
}