// --- LIBRARY ---
#include <LiquidCrystal.h>
#include "HardwareTimer.h"
#include <DHT.h>

// --- KONFIGURASI PIN & OBJEK ---
const int rs = PB11, en = PB10, d4 = PB0, d5 = PB1, d6 = PC13, d7 = PC14;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

#define DHTPIN PA0
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define pinCLK PB6
#define pinDT  PB7
HardwareTimer *MyEncoder;

#define buzzerPin PA1
#define greenLedPin PA2 // BARIS BARU: Pin untuk LED Hijau
#define redLedPin   PA3 // BARIS BARU: Pin untuk LED Merah

// --- Variabel Global ---
unsigned long previousMillis = 0;
const long interval = 2000;
int16_t lastEncoderValue = 0;

const float tempMaksimal = 30.0;
const float tempMinimal = 20.0;

// --- FUNGSI SETUP ---
void setup() {
  pinMode(buzzerPin, OUTPUT);
  pinMode(greenLedPin, OUTPUT); // BARIS BARU: Atur pin LED sebagai OUTPUT
  pinMode(redLedPin, OUTPUT);   // BARIS BARU: Atur pin LED sebagai OUTPUT

  pinMode(pinCLK, INPUT);
  pinMode(pinDT, INPUT);
  
  TIM_TypeDef *Instance  = (TIM_TypeDef *)pinmap_peripheral(digitalPinToPinName(pinCLK), PinMap_PWM);
  // ... (sisa inisialisasi encoder sama)
  uint32_t channel_1 = STM_PIN_CHANNEL(pinmap_function(digitalPinToPinName(pinCLK), PinMap_PWM));
  uint32_t channel_2 = STM_PIN_CHANNEL(pinmap_function(digitalPinToPinName(pinDT ), PinMap_PWM));
  MyEncoder = new HardwareTimer(Instance);
  MyEncoder->setMode(channel_1, TIMER_INPUT_CAPTURE_FALLING, pinCLK);
  MyEncoder->setMode(channel_2, TIMER_INPUT_CAPTURE_FALLING, pinDT );
  Instance->SMCR |= TIM_ENCODERMODE_TI12;
  MyEncoder->setCount(0);
  MyEncoder->resume();

  lcd.begin(16, 2);
  dht.begin();
  lcd.clear();
}

// --- FUNGSI LOOP ---
void loop() {
  unsigned long currentMillis = millis();

  // BAGIAN 1: Membaca sensor dan mengontrol alarm
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;

    float h = dht.readHumidity();
    float t = dht.readTemperature();

    if (isnan(h) || isnan(t)) {
      lcd.setCursor(0, 0);
      lcd.print("Gagal baca DHT!");
    } else {
      lcd.setCursor(0, 0);
      lcd.print("Suhu: ");
      lcd.print(t, 1);
      lcd.print((char)223);
      lcd.print("C   ");

      lcd.setCursor(0, 1);
      lcd.print("Lembap: ");
      lcd.print(h, 1);
      lcd.print("%   ");

      // MODIFIKASI: Logika untuk alarm (Buzzer dan LED)
      if (t > tempMaksimal || t < tempMinimal) {
        // Kondisi BAHAYA
        digitalWrite(buzzerPin, HIGH); // Nyalakan buzzer
        digitalWrite(redLedPin, HIGH);   // Nyalakan LED Merah
        digitalWrite(greenLedPin, LOW);  // Matikan LED Hijau
      } else {
        // Kondisi AMAN
        digitalWrite(buzzerPin, LOW);  // Matikan buzzer
        digitalWrite(redLedPin, LOW);    // Matikan LED Merah
        digitalWrite(greenLedPin, HIGH); // Nyalakan LED Hijau
      }
    }
  }

  // BAGIAN 2: Membaca encoder secara real-time
  int16_t currentEncoderValue = MyEncoder->getCount();
  if (currentEncoderValue != lastEncoderValue) {
    lastEncoderValue = currentEncoderValue;
    lcd.setCursor(12, 0);
    lcd.print("P:");
    lcd.print(lastEncoderValue);
    lcd.print("  ");
  }
}