#define BLYNK_TEMPLATE_ID "TMPL6sN7NNOPa"
#define BLYNK_TEMPLATE_NAME "FinalProject"
#define blynkAuth"DCc0Uz31c2sPq-L5Yw_slCaqUZq_GBTr"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <WiFiClient.h>
#include <DHT.h>
#include <LiquidCrystal_I2C.h>


#define DHTPIN 19     // Pin tempat sensor DHT11 atau DHT22 terhubung
#define DHTPIN 27 
#define DHTPIN 33 
#define DHTTYPE DHT22   // DHT 22 (AM2302)
#define THRESHOLD_TEMP 27  // Ambang batas suhu untuk mengaktifkan pendingin
#define TARGET_TEMP 23  // Suhu target setelah mengaktifkan pendingin
#define RELAY_PIN 14 // Pin yang terhubung ke relay untuk mengontrol air conditioning
#define buzPin 12
const char* ssid = "KOS_HERA";
const char* password = "terserah";


DHT dht1(DHTPIN, DHTTYPE);
DHT dht2(DHTPIN, DHTTYPE);
DHT dht3(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

bool isAirConditioningOn = false;

BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  delay(10);
  
  dht1.begin();
  dht2.begin();
  dht3.begin();
  lcd.begin(16, 2);
  lcd.backlight();
  
  connectToWiFi();
  Blynk.begin(blynkAuth, ssid, password);
  
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW); 
  
  timer.setInterval(5000L, readSensor);
}

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

void readSensor() {
  float temperature, humidity;
  temperature = dht1.readTemperature();
  humidity = dht1.readHumidity();
  temperature = dht2.readTemperature();
  humidity = dht2.readHumidity();
  temperature = dht3.readTemperature();
  humidity = dht3.readHumidity();

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Gagal membaca suhu/kelembapan dari sensor DHT!");
    return;
  }

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(temperature);
  lcd.print(" C");
  
  lcd.setCursor(0, 1);
  lcd.print("Kelembapan: ");
  lcd.print(humidity);
  lcd.print(" %");

  if (temperature > THRESHOLD_TEMP && !isAirConditioningOn) {
    Serial.println("Suhu terlalu tinggi, mengaktifkan pendingin...");
    controlAirConditioning(true); // Mengaktifkan pendingin
    isAirConditioningOn = true;
    digitalWrite(buzPin, HIGH);
    Blynk.virtualWrite(V0,"Suhu terlalu tinggi, pendingin diaktifkan.");
    Blynk.virtualWrite(V1,"Suhu terlalu tinggi, pendingin diaktifkan.");
    Blynk.virtualWrite(V2,"Suhu terlalu tinggi, pendingin diaktifkan.");
  } else if (temperature <= TARGET_TEMP && isAirConditioningOn) {
    Serial.println("Suhu telah mencapai target, mematikan pendingin.");
    controlAirConditioning(false); // Mematikan pendingin
    isAirConditioningOn = false;
    digitalWrite(buzPin, HIGH);
  }
}

void controlAirConditioning(bool state) {
  digitalWrite(RELAY_PIN, state ? HIGH : LOW);
}

void connectToWiFi() {
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}