#define BLYNK_TEMPLATE_ID "TMPL6OIXME4ZT"
#define BLYNK_TEMPLATE_NAME "UTS IOT TEORI"
#define BLYNK_AUTH_TOKEN "LwzFMl-0AkdgZ_l5k0ydW5mTOY0hH8PX"

#define BLYNK_PRINT Serial


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

const int trigPin = 5; 
const int echoPin = 18; 
const int merah = 14;
const int kuning = 12;
const int hijau = 13;
const int buzzer = 19;

#define SOUND_SPEED 0.0343
long duration;
float distanceCm;

long tinggi_Air = 0;
long tinggi_sensor = 20;

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

void setup(){
  Serial.begin(115200); delay(100);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(merah, OUTPUT);
  pinMode(kuning, OUTPUT);
  pinMode(hijau, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Blynk.begin(auth, ssid, pass);

}

void loop() {
  Blynk.run();
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  
  distanceCm = duration * SOUND_SPEED / 2;
  tinggi_Air = tinggi_sensor - distanceCm;
  int persentase = (float)tinggi_Air / tinggi_sensor * 100;

  Serial.print("Tinggi Air: ");
  Serial.print(tinggi_Air);
  Serial.print("cm      Persentase: ");
  Serial.print(persentase);
  Serial.println("%");

  Blynk.virtualWrite(V0, persentase);
  Blynk.virtualWrite(V4, tinggi_Air);

   if (persentase < 50) {
    digitalWrite(hijau, HIGH); // LED hijau menyala
    digitalWrite(kuning, LOW); // LED kuning mati
    digitalWrite(merah, LOW); // LED merah mati
    //buzzer
    noTone(buzzer);
    Blynk.virtualWrite(V1, 1); // Menyalakan LED hijau di Blynk
    Blynk.virtualWrite(V2, 0); // Mematikan LED kuning di Blynk
    Blynk.virtualWrite(V3, 0); // Mematikan LED merah di Blynk
  } else if (persentase >= 50 && persentase < 80) {
    digitalWrite(hijau, LOW); // LED hijau mati
    digitalWrite(kuning, HIGH); // LED kuning menyala
    digitalWrite(merah, LOW); // LED merah mati
    //buzzer
    tone(buzzer,1000);
    delay(500);
    noTone(buzzer);
    
    Blynk.virtualWrite(V1, 0); // Mematikan LED hijau di Blynk
    Blynk.virtualWrite(V2, 1); // Menyalakan LED kuning di Blynk
    Blynk.virtualWrite(V3, 0); // Mematikan LED merah di Blynk
  } else {
    digitalWrite(hijau, LOW); // LED hijau mati
    digitalWrite(kuning, LOW); // LED kuning mati
    digitalWrite(merah, HIGH); // LED merah menyala

    //buzzer
    tone(buzzer,1000);

    Blynk.virtualWrite(V1, 0); // Mematikan LED hijau di Blynk
    Blynk.virtualWrite(V2, 0); // Mematikan LED kuning di Blynk
    Blynk.virtualWrite(V3, 1); // Menyalakan LED merah di Blynk
  }

  delay(1000);
}