// --- KELAYAKAN BLYNK ANDA ---
#define BLYNK_TEMPLATE_ID "TMPLxxxxxx"               // Tukar TMPLxxxxxx ini dengan Template ID anda
#define BLYNK_TEMPLATE_NAME "Pemantauan Motor 3-Fasa" // Nama template anda
#define BLYNK_AUTH_TOKEN "fohhcbIxJVaUMPWF60oRd0ErvpRAthKG" // Token anda telah dimasukkan di sini!

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

// Tetapan WiFi Maya Khas Wokwi (WAJIB kekal seperti ini):
char ssid[] = "Wokwi-GUEST"; 
char pass[] = "";
// Definisi Pin
#define ONE_WIRE_BUS 4
#define CURRENT_ADC GPIO_NUM_36 // Potentiometer 1
#define VOLTAGE_ADC GPIO_NUM_39 // Potentiometer 2
#define RELAY_PIN 2
#define BUZZER_PIN 5

BlynkTimer timer;

// Setup Sensor Suhu
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

// Pembolehubah Global
float temperature = 0.0;
float current = 0.0;
float voltage = 0.0;
bool isTripped = false;

void myTimerEvent();

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

  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  // Status Awal Motor OFF (Relay Active Low dalam Wokwi)
  digitalWrite(RELAY_PIN, HIGH); 
  digitalWrite(BUZZER_PIN, LOW);

  sensors.begin();
  
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Sediakan fungsi pemantauan setiap 1 saat
  timer.setInterval(1000L, myTimerEvent);
}

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

// --- FUNGSI PEMANTAUAN SETIAP 1 SAAT ---
void myTimerEvent() {
  // 1. Baca Sensor Suhu
  sensors.requestTemperatures();
  temperature = sensors.getTempCByIndex(0);
  if (temperature == -127.00) temperature = 0.0;

  // 2. Baca Arus & Voltan (Simulasi Potentiometer 0-5V Analog)
  int currentRaw = analogRead(CURRENT_ADC);
  int voltageRaw = analogRead(VOLTAGE_ADC);

  // Tukar ADC Raw ke nilai simulasi (Laras formula mengikut keperluan simulasi)
  current = (currentRaw / 4095.0) * 30.0; // Anggap potentiometer penuh = 30A
  voltage = (voltageRaw / 4095.0) * 300.0; // Anggap potentiometer penuh = 300V

  // 3. Logik Keselamatan (Trip/Latch)
  if (temperature > 50.0 || current > 5.0) {
    if (!isTripped) {
      isTripped = true;
      digitalWrite(RELAY_PIN, HIGH);  // Matikan Motor
      digitalWrite(BUZZER_PIN, HIGH); // Bunyikan Buzzer Amaran
      
      Blynk.virtualWrite(V3, 0);       // Kemaskini suis Blynk ke OFF
      Serial.println("AMARAN: TRIP TERCETUS! Motor dimatikan.");
    }
  }

  // 4. Hantar Data ke Widget Blynk
  Blynk.virtualWrite(V0, temperature);
  Blynk.virtualWrite(V1, current);
  Blynk.virtualWrite(V2, voltage);
  Blynk.virtualWrite(V4, isTripped ? 1 : 0); // Indikator Trip di App
}

// --- FUNGSI KAWALAN SUIS MOTOR (V3) ---
BLYNK_WRITE(V3) {
  int switchState = param.asInt();
  if (switchState == 1) {
    if (!isTripped) {
      digitalWrite(RELAY_PIN, LOW); // Hidupkan Motor (Active LOW)
      Serial.println("Motor: DIHIDUPKAN");
    } else {
      Serial.println("Gagal Hidupkan! Sistem masih dalam keadaan Trip.");
      Blynk.virtualWrite(V3, 0); // Paksa suis Blynk ke OFF semula
    }
  } else {
    digitalWrite(RELAY_PIN, HIGH); // Matikan Motor
    Serial.println("Motor: DIMATIKAN");
  }
}

// --- FUNGSI BUTANG RESET (V5) ---
BLYNK_WRITE(V5) {
  int resetVal = param.asInt();
  if (resetVal == 1) {
    if (temperature <= 50.0 && current <= 5.0) {
      isTripped = false;
      digitalWrite(BUZZER_PIN, LOW); // Matikan Buzzer
      Blynk.virtualWrite(V4, 0);       // Padam indikator Trip di App
      Serial.println("RESET BERJAYA: Sistem kembali Normal.");
    } else {
      Serial.println("RESET GAGAL: Suhu/Arus masih dalam keadaan bahaya!");
    }
  }
}