// ==============================================
// ==> GANTI 3 BARIS INI DENGAN KREDENSIAL ANDA <==
// ==============================================
#define BLYNK_TEMPLATE_ID "TMPL69q_WrpIX"
#define BLYNK_TEMPLATE_NAME "SMART WARNING SYSTEM"
#define BLYNK_AUTH_TOKEN "x2oSlFf5zP9FuU0mNwe1BfLpY1kxx6sr"
// ==============================================

#include <Arduino.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <BlynkTimer.h>

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

// ==== Virtual Pins ====
#define vPIN_TEMP V0       // Labeled Value suhu (DOUBLE)
#define vPIN_LED V1        // Button switch ON/OFF LED (INTEGER)
#define vPIN_BRIGHTNESS V2 // Slider PWM brightness (0–255)
#define vPIN_STATUS V3     // Value Display teks "ON"/"OFF" (STRING)
#define vPIN_MUTE V4       // Button switch mute notifikasi (INTEGER)

// ==== Hardware (ESP32) ====
const int LED_PIN = 2;
const int PWM_CHANNEL = 0;
const int PWM_FREQ = 5000;
const int PWM_RESOLUTION = 8;

// ==== Logika Aplikasi ====
BlynkTimer timer;
float temperature = 0.0;
const float TEMP_THRESHOLD = 30.0; 
bool isAboveThreshold = false; 
bool muteNotifications = false; 
int ledOn = 0; 
int brightness = 128; 

const char EVENT_HIGH_TEMP[] = "high_temp_warning"; 

// Helper: terapkan output LED sesuai ledOn & brightness
void applyLedOutput() {
  int duty = (ledOn ? brightness : 0);
  ledcWrite(PWM_CHANNEL, duty);
}

// Helper: update teks status ke V3
void updateStatusText() {
  const char* txt = (ledOn && brightness > 0) ? "ON" : "OFF";
  Blynk.virtualWrite(vPIN_STATUS, txt);
}

// Kirim suhu berkala + logika warna & event
void sendTemperature() {
  temperature = random(250, 350) / 10.0; // 25.0–35.0°C
  Blynk.virtualWrite(vPIN_TEMP, temperature);

  if (temperature > TEMP_THRESHOLD && !isAboveThreshold) {
    isAboveThreshold = true;
    Blynk.setProperty(vPIN_TEMP, "color", "#FF0000");

    if (!muteNotifications) {
      String msg = String("Peringatan! Suhu: ") + temperature + " °C";
      Blynk.logEvent(EVENT_HIGH_TEMP, msg);
    }
  } else if (temperature <= TEMP_THRESHOLD && isAboveThreshold) {
    isAboveThreshold = false;
    Blynk.setProperty(vPIN_TEMP, "color", "#23C48E"); // hijau
  }
}

// Sinkronisasi saat terkoneksi
BLYNK_CONNECTED() {
  Blynk.syncVirtual(vPIN_LED, vPIN_BRIGHTNESS, vPIN_MUTE);
}

// V1: ON/OFF LED
BLYNK_WRITE(vPIN_LED) {
  ledOn = param.asInt(); 
  applyLedOutput();
  updateStatusText();
}

// V2: Brightness Slider
BLYNK_WRITE(vPIN_BRIGHTNESS) {
  int val = param.asInt();
  if (val < 0) val = 0;
  if (val > 255) val = 255;
  brightness = val;
  applyLedOutput();
  updateStatusText();
}

// V4: Mute notifikasi
BLYNK_WRITE(vPIN_MUTE) {
  muteNotifications = (param.asInt() == 1);
}

void setup() {
  Serial.begin(115200);
  delay(100);

  // PWM setup
  ledcSetup(PWM_CHANNEL, PWM_FREQ, PWM_RESOLUTION);
  ledcAttachPin(LED_PIN, PWM_CHANNEL);
  applyLedOutput();

  // Koneksi ke Blynk Cloud
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Jadwalkan pengiriman suhu tiap 2 detik
  timer.setInterval(2000L, sendTemperature);

  // Warna awal suhu: hijau
  Blynk.setProperty(vPIN_TEMP, "color", "#23C48E");
}

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