#define BLYNK_TEMPLATE_ID "TMPL6ci-42n6F"
#define BLYNK_TEMPLATE_NAME "Smart Farming"
#define BLYNK_AUTH_TOKEN "SL_vt6GJcRZ1XloG9kbYElda2tBKmlh1"

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Ultrasonic.h>

// Informasi WiFi
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Definisi Pin
#define TRIG_PIN 12  // ESP32 GPIO 12
#define ECHO_PIN 13  // ESP32 GPIO 13
#define LDR_PIN 36   // ESP32 GPIO 36
#define RELAY_PIN 14 // ESP32 GPIO 14
#define BUZZER_PIN 27 // ESP32 GPIO 27
#define LED_PIN 26  // ESP32 GPIO 26

Ultrasonic ultrasonic(TRIG_PIN, ECHO_PIN);

bool pumpOn = false;
bool hamaDetected = false;

// Fungsi untuk menangani perubahan status tombol di Blynk
BLYNK_WRITE(V4) {
  pumpOn = param.asInt();
  digitalWrite(RELAY_PIN, pumpOn ? HIGH : LOW);
  digitalWrite(LED_PIN, pumpOn ? HIGH : LOW);
}

void setup() {
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  pinMode(LDR_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  Blynk.run();
  
  // Membaca ketinggian air
  long distance = ultrasonic.read();
  Serial.print("Distance: ");
  Serial.println(distance);
  Blynk.virtualWrite(V1, distance); // Kirim data ke Blynk (V1)

  // Membaca nilai LDR
  int ldrValue = analogRead(LDR_PIN);
  Serial.print("LDR Value: ");
  Serial.println(ldrValue);
  Blynk.virtualWrite(V2, ldrValue); // Kirim data ke Blynk (V2)

  // Simulasi deteksi hama dengan LDR dan alarm
  if (ldrValue < 500) { // Ambang batas deteksi hama (misal, kurang cahaya)
    if (!hamaDetected) {
      hamaDetected = true;
      digitalWrite(BUZZER_PIN, HIGH); // Nyalakan buzzer
      Blynk.virtualWrite(V3, 1); // Set nilai V3 untuk menandakan deteksi hama
      Blynk.logEvent("hama_detected", "Hama terdeteksi!"); // Kirim notifikasi ke Blynk
    }
  } else {
    hamaDetected = false;
    digitalWrite(BUZZER_PIN, LOW); // Matikan buzzer
    Blynk.virtualWrite(V3, 0); // Set nilai V3 ke 0
  }

  delay(2000); // Delay untuk stabilitas
}