#include "DHT.h"

#define DHTPIN 15         // Pin data DHT22
#define DHTTYPE DHT22     // Jenis sensor

DHT dht(DHTPIN, DHTTYPE);

// LED Bar Graph untuk suhu
const int ledBar[] = {13, 12, 14, 27, 26, 25, 33, 32, 4, 16};
const int numLeds = sizeof(ledBar) / sizeof(ledBar[0]);

// LED kelembapan
const int ledGreen = 17;  // Aman (45-60%)
const int ledYellow = 5;  // Sedikit lembap (60-70%)
const int ledRed = 18;    // Terlalu lembap (>70%)

// Simulasi kipas
const int fanLedPin = 21;

// Simulasi humidifier (baru)
const int humidifierPin = 19;  // GPIO 22

// Simulasi humidifier (baru)
const int dehumidifierPin = 2;  // GPIO 22

// Ambang batas suhu (dalam derajat Celsius)
const float tempThreshold = 30.0;

// Batas kelembapan berdasarkan ASHRAE
const float humidLow = 45.0;
const float humidHigh = 60.0;
const float humidMax = 70.0;

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

  // Setup pin output untuk LED suhu
  for (int i = 0; i < numLeds; i++) {
    pinMode(ledBar[i], OUTPUT);
  }

  // Setup pin output untuk LED kelembapan, kipas, dan humidifier
  pinMode(ledGreen, OUTPUT);
  pinMode(ledYellow, OUTPUT);
  pinMode(ledRed, OUTPUT);
  pinMode(fanLedPin, OUTPUT);
  pinMode(humidifierPin, OUTPUT);
  pinMode(dehumidifierPin, OUTPUT);
}

void loop() {
  float temp = dht.readTemperature();
  float humid = dht.readHumidity();

  if (isnan(temp) || isnan(humid)) {
    Serial.println("Gagal membaca dari sensor DHT!");
    return;
  }

  Serial.print("Suhu: ");
  Serial.print(temp);
  Serial.println(" *C");

  Serial.print("Kelembapan: ");
  Serial.print(humid);
  Serial.println(" %");

  // LED Bar untuk suhu (18°C sampai 35°C)
  float ledCount = map(temp, 18, 35, 0, numLeds);
  ledCount = constrain(ledCount, 0, numLeds);

  for (int i = 0; i < numLeds; i++) {
    digitalWrite(ledBar[i], i < ledCount ? HIGH : LOW);
  }

  // Kontrol kipas berdasarkan suhu
  if (temp > tempThreshold) {
    digitalWrite(fanLedPin, HIGH);
    Serial.println("KIPAS ON");
  } else {
    digitalWrite(fanLedPin, LOW);
    Serial.println("KIPAS OFF");
  }

  // LED indikator kelembapan & kontrol dehumidifier/humidifier
  if (humid > humidMax) {
    // Terlalu lembap
    digitalWrite(ledGreen, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledRed, HIGH);
    digitalWrite(humidifierPin, LOW); // Humidifier dimatikan
    digitalWrite(dehumidifierPin, HIGH);
    Serial.println("DEHUMIDIFIER ON");
    Serial.println("HUMIDIFIER OFF");
  } else if (humid > humidHigh) {
    // Mulai lembap
    digitalWrite(ledGreen, LOW);
    digitalWrite(ledYellow, HIGH);
    digitalWrite(ledRed, LOW);
    digitalWrite(humidifierPin, LOW); // Humidifier dimatikan
    digitalWrite(dehumidifierPin, LOW);
    Serial.println("DEHUMIDIFIER OFF");
    Serial.println("HUMIDIFIER OFF");
  } else if (humid >= humidLow) {
    // Aman
    digitalWrite(ledGreen, HIGH);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledRed, LOW);
    digitalWrite(humidifierPin, LOW); // Humidifier dimatikan
    digitalWrite(dehumidifierPin, LOW);
    Serial.println("DEHUMIDIFIER OFF");
    Serial.println("HUMIDIFIER OFF");
  } else {
    // Terlalu kering (kelembapan < 45%)
    digitalWrite(ledGreen, LOW);
    digitalWrite(ledYellow, LOW);
    digitalWrite(ledRed, HIGH);
    digitalWrite(humidifierPin, HIGH); // Humidifier dinyalakan
    digitalWrite(dehumidifierPin, LOW);
    Serial.println("DEHUMIDIFIER OFF");
    Serial.println("HUMIDIFIER ON");
  }

  delay(2000); // Delay 2 detik
}