#include <Wire.h>
#include <MPU6050.h>
#include <LiquidCrystal_I2C.h>

MPU6050 mpu;

// Pin LDR, Relay, LED, dan Buzzer
const int LDR_PIN = 34; // Pin LDR
const int RELAY_PIN = 32; // Pin Relay
const int LED_PIN = 15; // Pin LED
const int BUZZER_PIN = 2; // Pin Buzzer

// Inisialisasi LCD I2C dengan alamat 0x27 dan ukuran 16x2
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(115200);
  
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);

  // Inisialisasi I2C dan MPU6050
  Wire.begin(21, 22);  // SDA: 21, SCL: 22 untuk ESP32
  lcd.begin(16, 2);
  lcd.backlight();  // Pastikan backlight LCD aktif
  lcd.print("LCD OK!");
  delay(1000);

  mpu.initialize();
  if (!mpu.testConnection()) {
    Serial.println("MPU6050 tidak terhubung!");
    while (1);
  }
}

void loop() {
  // Membaca nilai LDR
  int ldrValue = analogRead(LDR_PIN);
  int lux = map(ldrValue, 0, 4095, 0, 2000); 

  // Membaca suhu dari MPU6050
  int rawTemp = mpu.getTemperature();
  float tempC = rawTemp / 340.0 + 36.53;

  // **Tampilkan suhu & kondisi gelap/terang di LCD dan Serial Monitor**
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(tempC, 1);
  lcd.print(" C");

  Serial.print("Suhu: ");
  Serial.print(tempC, 1);
  Serial.println(" C");

  lcd.setCursor(0, 1);
  if (lux < 500) {
    lcd.print("Terang");
    Serial.println("Kondisi: Terang");
    digitalWrite(LED_PIN, LOW);
    digitalWrite(RELAY_PIN, LOW);
    noTone(BUZZER_PIN);
  } else {
    lcd.print("Gelap");
    Serial.println("Kondisi: Gelap");
    for (int i = 0; i < 5; i++) { // Buzzer dan LED berkedip berirama
      digitalWrite(LED_PIN, HIGH);
      digitalWrite(RELAY_PIN, HIGH);
      tone(BUZZER_PIN, 1000);
      delay(300);
      digitalWrite(LED_PIN, LOW);
      digitalWrite(RELAY_PIN, LOW);
      noTone(BUZZER_PIN);
      delay(300);
    }
  }
  delay(1000);

  // Membaca akselerasi mentah
  int16_t ax_raw, ay_raw, az_raw;
  mpu.getAcceleration(&ax_raw, &ay_raw, &az_raw);

  // **Konversi ke g (gravitasi bumi)**
  float ax = ax_raw / 16384.0;
  float ay = ay_raw / 16384.0;
  float az = az_raw / 16384.0;

  // **Tampilkan nilai akselerasi X, Y, Z di LCD dan Serial Monitor**
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Ax:");
  lcd.print(ax, 2);
  lcd.print(" Ay:");
  lcd.print(ay, 2);

  lcd.setCursor(0, 1);
  lcd.print("Az:");
  lcd.print(az, 2);

  Serial.print("X: ");
  Serial.print(ax, 2);
  Serial.print(" Y: ");
  Serial.print(ay, 2);
  Serial.print(" Z: ");
  Serial.println(az, 2);

  delay(2000);
}