#define BLYNK_TEMPLATE_ID "TMPL6VG7FYHrO"
#define BLYNK_TEMPLATE_NAME "Monitoring suhu, Kelembaban, dan Relay"
#define BLYNK_AUTH_TOKEN "v3gmR3fSIumFIocLLxvunrHVnNu-FA2l"

#define BLYNK_PRINT Serial

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

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "Wokwi-GUEST"; // Nama hotspot yang digunakan
char pass[] = ""; // Kata sandi hotspot yang digunakan

#define DHTPIN 15         // Pin digital tempat Anda menghubungkan sensor DHT22
#define DHTTYPE DHT22     // Jenis sensor DHT (DHT11 atau DHT22)
#define RELAY_PIN1 12     // Pin relay 1
#define RELAY_PIN2 13     // Pin relay 2

DHT dht(DHTPIN, DHTTYPE);

int relay1State = LOW;
int relay2State = LOW;

void setup() {
  Serial.begin(115200);
  LCD.init();
  LCD.backlight();
  Blynk.begin(auth, ssid, pass);
  dht.begin();
  pinMode(RELAY_PIN1, OUTPUT);
  pinMode(RELAY_PIN2, OUTPUT);
}

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

BLYNK_WRITE(V2) {
  int relayValue = param.asInt();
  if (relayValue == 1) {
    digitalWrite(RELAY_PIN1, HIGH);
    relay1State = HIGH;
  } else {
    digitalWrite(RELAY_PIN1, LOW);
    relay1State = LOW;
  }
}

BLYNK_WRITE(V3) {
  int relayValue = param.asInt();
  if (relayValue == 1) {
    digitalWrite(RELAY_PIN2, HIGH);
    relay2State = HIGH;
  } else {
    digitalWrite(RELAY_PIN2, LOW);
    relay2State = LOW;
  }
}

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

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Kirim data suhu ke widget V0 di Blynk
  Blynk.virtualWrite(V0, t);

  // Kirim data kelembaban ke widget V1 di Blynk
  Blynk.virtualWrite(V1, h);

  // Tampilkan suhu di LCD
  LCD.setCursor(0, 0);
  LCD.print("Temp: ");
  LCD.print(t);
  LCD.print(" C");

  // Tampilkan kelembaban di LCD
  LCD.setCursor(0, 1);
  LCD.print("Humidity: ");
  LCD.print(h);
  LCD.print(" %");

  // Kirim status relay 1 ke widget V4 di Blynk
  Blynk.virtualWrite(V4, relay1State);

  // Kirim status relay 2 ke widget V5 di Blynk
  Blynk.virtualWrite(V5, relay2State);

  Serial.print("Temperature : ");
  Serial.print(t);
  Serial.print("    Humidity : ");
  Serial.println(h);
}