#define ECHO_PIN 5
#define TRIG_PIN 4

#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID   "TMPLYuF7OfiQ"

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

char auth[] = "-egbrHTDs8JH3ZGm2_OYQscM6mg0MkIS";

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

int r, g, y;

//BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(14, OUTPUT);
}

float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

void loop() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  float distance = duration * 0.034 / 2;
  Blynk.virtualWrite(V3, distance);

  Serial.print("Jarak: ");
  Serial.println(distance);

  if(distance >100){
    digitalWrite(13, HIGH);
    digitalWrite(12, LOW);
    digitalWrite(14, LOW);
    r = 0;
    y = 0;
    g = 1;
    Serial.println("Aman");
  } else if (distance <100 && distance >= 50){
    digitalWrite(13, LOW);
    digitalWrite(12, HIGH);
    digitalWrite(14, LOW);
    r = 0;
    y = 1;
    g = 0;
    Serial.println("Siaga");
  } else if (distance <50) {
    digitalWrite(13, LOW);
    digitalWrite(12, LOW);
    digitalWrite(14, HIGH);
    r = 1;
    y = 0;
    g = 0;
    Serial.println("Banjir");
  }
  Blynk.virtualWrite(V4, r);
  Blynk.virtualWrite(V5, y);
  Blynk.virtualWrite(V6, g);
  delay(100);
}