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

// Ganti sesuai akun Blynk kamu
#define BLYNK_TEMPLATE_ID "TMPL6xaB4ombN"
#define BLYNK_DEVICE_NAME "Monitoring Rumah""
#define BLYNK_AUTH_TOKEN "kYdPPDDweHaMqK30ykSh8QaijdpSqcpP"

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

#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define TRIG 12
#define ECHO 14
#define PIR 13
#define LAMPU 2
#define POMPA 4
#define BEEP 5
#define TOMBOL 18

BlynkTimer timer;
bool lampuState = false;
unsigned long lastMotion = 0;

BLYNK_WRITE(V0) {
  lampuState = param.asInt();
  digitalWrite(LAMPU, lampuState);
}

void bacaSensor() {
  float suhu = dht.readTemperature();
  float kelembaban = dht.readHumidity();

  // Ultrasonic sensor
  digitalWrite(TRIG, LOW); delayMicroseconds(2);
  digitalWrite(TRIG, HIGH); delayMicroseconds(10); digitalWrite(TRIG, LOW);
  long durasi = pulseIn(ECHO, HIGH);
  float levelAir = durasi * 0.034 / 2;

  // PIR sensor
  if (digitalRead(PIR) == HIGH) {
    lastMotion = millis();
    Blynk.virtualWrite(V3, 1);
  } else {
    Blynk.virtualWrite(V3, 0);
    if (millis() - lastMotion > 20000) {
      lampuState = false;
      digitalWrite(LAMPU, LOW);
      Blynk.virtualWrite(V0, 0);
    }
  }

  // Pompa logic
  if (levelAir < 100) digitalWrite(POMPA, HIGH);
  else if (levelAir > 200) digitalWrite(POMPA, LOW);

  // Alarm logic
  if (levelAir > 200 && suhu > 30) digitalWrite(BEEP, HIGH);
  else digitalWrite(BEEP, LOW);

  // Kirim ke Blynk
  Blynk.virtualWrite(V1, suhu);
  Blynk.virtualWrite(V2, kelembaban);
  Blynk.virtualWrite(V4, levelAir);
  Blynk.virtualWrite(V5, digitalRead(POMPA));
  Blynk.virtualWrite(V6, digitalRead(BEEP));
}

void setup() {
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  dht.begin();

  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(PIR, INPUT);
  pinMode(LAMPU, OUTPUT);
  pinMode(POMPA, OUTPUT);
  pinMode(BEEP, OUTPUT);
  pinMode(TOMBOL, INPUT_PULLUP);

  timer.setInterval(2000L, bacaSensor);
}

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

  if (digitalRead(TOMBOL) == LOW) {
    lampuState = !lampuState;
    digitalWrite(LAMPU, lampuState);
    Blynk.virtualWrite(V0, lampuState);
    delay(300);
  }
}