#define BLYNK_TEMPLATE_ID "TMPL6aoFKveoR"
#define BLYNK_TEMPLATE_NAME "monitoring distance"
#define BLYNK_AUTH_TOKEN "MSYuPEtHQkRhZuvyJZE4iakawGHee_4b"
#define BLYNK_PRINT Serial

#include "Ultrasonic.h"
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

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

BlynkTimer timer;

Ultrasonic ultrasonic(18, 19);
int buzzerPin = 13;
int ledPin = 14;
int switcher = 0;
int octaveBuzz = 0;

// from blynk device to wokwi peripheral
BLYNK_WRITE(V0)
{
  octaveBuzz = param.asInt();
}

BLYNK_WRITE(V3)
{
  int pinSwitch = param.asInt();
  Serial.println(pinSwitch); 
  if (pinSwitch==1){
    switcher = 1;
  }else{
    switcher = 0;
  }
}

void myTone(int pin)
{
  ledcAttachPin(pin, 0); // pin, channel
  ledcWriteNote(0, NOTE_F, octaveBuzz); // channel, frequency, octave
}

void myNoTone(int pin)
{
  ledcDetachPin(pin);
}

void mainSensor(){
  // input
  int distance = ultrasonic.read(CM);
  
  // main conditional
  if (distance <= 200) {
    if (switcher==0){
      delay(1000);
      myTone(buzzerPin);
      digitalWrite(ledPin, HIGH);
      Blynk.virtualWrite(V1, 1);
    }else{
      delay(1000);
      myNoTone(buzzerPin);  
      digitalWrite(ledPin, LOW);
      Blynk.virtualWrite(V1, 0);
    }
  }else{
    delay(1000);
    myNoTone(buzzerPin);
    digitalWrite(ledPin, LOW);
      Blynk.virtualWrite(V1, 0);
  }

  // from wokwi peripheral to blynk device
  Blynk.virtualWrite(V2, distance);

  // debugging
  Serial.print("Jarak: ");
  Serial.println(distance);
  Serial.print("on/off: ");
  Serial.println(switcher);
  Serial.print("Octave: ");
  Serial.println(octaveBuzz);
}

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(2500L, mainSensor);
}

void loop() {
  delay(1000);
  mainSensor();
  Blynk.run();
  timer.run();
}