#define BLYNK_TEMPLATE_ID "TMPL6IsQlHRZO"
#define BLYNK_TEMPLATE_NAME "Latihan 5 Akbar"
#define BLYNK_AUTH_TOKEN "V5dZdlEb0-qreO1g52XFxasGzOCNNEX-"
#define BLYNK_PRINT Serial

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

char ssid[] = "Wokwi-GUEST";
char pass[] = "";


#define DHTPIN   15   
#define DHTTYPE  DHT22
#define SDA_PIN  21   
#define SCL_PIN  22  


#define VPIN_SUHU     V0   
#define VPIN_LEMBAB   V1  
#define VPIN_KONDISI  V2   


const float BATAS_PANAS  = 30.0;  
const float BATAS_DINGIN = 20.0;  
const float BATAS_LEMBAB = 70.0;  


DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
BlynkTimer timer;


String tentukanKondisi(float t, float h) {
  if (t > BATAS_PANAS)  return "Panas";
  if (t < BATAS_DINGIN) return "Dingin";
  if (h > BATAS_LEMBAB) return "Lembab";
  return "Normal";
}


void tampilLCD(int baris, String teks) {
  while (teks.length() < 16) teks += ' ';
  lcd.setCursor(0, baris);
  lcd.print(teks);
}


void sendSensorData() {
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)) {
    Serial.println("Gagal membaca dari sensor DHT!");
    tampilLCD(0, "Sensor error!");
    tampilLCD(1, "Cek kabel DHT22");
    return;
  }

  String kondisi = tentukanKondisi(t, h);


  Blynk.virtualWrite(VPIN_SUHU, t);
  Blynk.virtualWrite(VPIN_LEMBAB, h);
  Blynk.virtualWrite(VPIN_KONDISI, kondisi);


  tampilLCD(0, "S:" + String(t, 1) + "C H:" + String(h, 0) + "%");
  tampilLCD(1, "Kondisi: " + kondisi);

  Serial.printf("Suhu: %.1f C | Lembab: %.1f %% | Kondisi: %s\n", t, h, kondisi.c_str());
}

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


  Wire.begin(SDA_PIN, SCL_PIN);
  lcd.init();
  lcd.backlight();
  dht.begin();

  tampilLCD(0, "Menghubungkan...");
  tampilLCD(1, "Wi-Fi & Blynk");

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  lcd.clear();


  timer.setInterval(2000L, sendSensorData);
}

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