#include <DHT.h>
#include <LiquidCrystal_I2C.h>
#include <HX711.h>
#include <ESP32Servo.h>

#define DHT_PIN 15
#define DHT_TYPE DHT22
#define TRIG_PIN 4
#define ECHO_PIN 2
#define PIR_PIN 35
#define SERVO_PIN 26
#define RED_LED 13
#define GREEN_LED 12
#define BLUE_LED 14
#define YELLOW_LED 27
#define BUZZER_PIN 34
#define DOUT 18
#define CLK 5

HX711 scale;
DHT dht(DHT_PIN, DHT_TYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo servoMotor;

void setup()
{
  lcd.init();
  lcd.clear();
  lcd.backlight();

  servoMotor.attach(SERVO_PIN);
  servoMotor.write(0); 
  Serial.begin(115200);

  scale.begin(DOUT, CLK); 
  scale.set_scale(); 

  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(PIR_PIN, INPUT);
  pinMode(RED_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);
  pinMode(BLUE_LED, OUTPUT);
  pinMode(YELLOW_LED, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  dht.begin();
}

void loop() {
  // Baca suhu dan kelembaban dari sensor DHT22
  float suhu = dht.readTemperature();
  float kelembaban = dht.readHumidity();
  lcd.setCursor(0, 0);
  lcd.print("Temp :");
  lcd.setCursor(0, 1);
  lcd.print(suhu);
  lcd.print("°C");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Humid :");
  lcd.setCursor(0, 1);
  lcd.print(kelembaban);
  lcd.print("%");
  delay(1000);
  lcd.clear();

  // Baca water level
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  float durasi = pulseIn(ECHO_PIN, HIGH);
  float air = durasi * 0.03408 / 2;
  lcd.setCursor(0, 0);
  lcd.print("Water :");
  lcd.setCursor(0, 1);
  lcd.print(air);
  lcd.print("cm");
  delay(1000);
  lcd.clear();

  scale.set_scale(); 
  float berat = scale.get_units(10) / 420.00; 
  lcd.setCursor(0, 0);
  lcd.print("Weight :");
  lcd.setCursor(0, 1);
  lcd.print(berat);
  lcd.print("kg");
  delay(1000);
  lcd.clear();

  int gerakan = digitalRead(PIR_PIN);
  int statusPIR = LOW;

  if (suhu < 25 || suhu > 28) {
    digitalWrite(RED_LED, HIGH);
  } else {
    digitalWrite(RED_LED, LOW);
  }

  if (kelembaban < 60 || kelembaban > 70) {
    digitalWrite(GREEN_LED, HIGH);
  } else {
    digitalWrite(GREEN_LED, LOW);
  }

  if (air < 12) {
    digitalWrite(BLUE_LED, HIGH);
    servoMotor.write(45);
    delay(5000);
    servoMotor.write(0);
  } else {
    digitalWrite(BLUE_LED, LOW);
  }

  if (gerakan == HIGH) {  
    Serial.println("Gerakan Terdeteksi!");
    lcd.setCursor(0, 0);
    lcd.print("Gerakan Terdeteksi");
    delay(1000);
    lcd.clear();
    digitalWrite(BUZZER_PIN, LOW);
  } else {
    Serial.println("Gerakan Tidak Terdeteksi");
    lcd.setCursor(0, 0);
    lcd.print("Gerakan Tidak Terdeteksi");
    delay(1000);
    lcd.clear();
    digitalWrite(BUZZER_PIN, HIGH);
  }

  if (berat < 5) {
    digitalWrite(BUZZER_PIN, HIGH); 
    digitalWrite(YELLOW_LED, HIGH); 
    tone(8, 262, 250); 
    servoMotor.write(90); 
    delay(5000);
    servoMotor.write(0);
  } else {
    digitalWrite(BUZZER_PIN, LOW); 
    digitalWrite(YELLOW_LED, LOW);    
    noTone(8); 
  }

  delay(5000); // delay antar siklus pembacaan
}