// Import blynk
#define BLYNK_TEMPLATE_ID "TMPL6F1OXV8IJ"
#define BLYNK_TEMPLATE_NAME "Notifikasi Gempa"
#define BLYNK_AUTH_TOKEN "tAqX-GC9tx_NvkkU5mOD7B2oh3OKSw_1"

#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <BlynkSimpleEsp32.h>
#include <WiFi.h>
LiquidCrystal_I2C lcd(0x27,20,4);

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

Adafruit_MPU6050 mpu;

float skala_richter = 0;

// Inisialisasi Pin LED
const int ledHijau = 27;
const int ledKuning = 14;
const int ledMerah = 12;
const int pinBuzzer = 19;

sensors_event_t event;

float get_skalaRichter() {
  mpu.getAccelerometerSensor()->getEvent(&event);
  float yKuadrat = event.acceleration.y * event.acceleration.y; 
  float xKuadrat = event.acceleration.x * event.acceleration.x;
  skala_richter = sqrt(yKuadrat + xKuadrat);

  return skala_richter;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);

  pinMode(ledHijau, OUTPUT);
  pinMode(ledKuning, OUTPUT);
  pinMode(ledMerah, OUTPUT);
  lcd.init();
  lcd.backlight();
  while (!mpu.begin()) {
    Serial.println("MPU6050 not connected!");
    delay(1000);
  }
  Serial.println("MPU6050 ready!");
}

void loop() {
  float valueSR = get_skalaRichter();

  if (event.acceleration.y == 0 && event.acceleration.x == 0) {
    lcd.clear();
    lcd.setCursor(1, 1);
    lcd.println("AMAN, TIDAK TERJADI");
    lcd.setCursor(5, 2);
    lcd.println("GEMPA BUMI !");
    delay(1500);  
    tone(pinBuzzer, 0);
    digitalWrite(ledHijau, HIGH);
    digitalWrite(ledKuning, LOW);
    digitalWrite(ledMerah, LOW);
  } 
  else { 
    digitalWrite(ledHijau, LOW);

    if (valueSR > 0 && valueSR <=4) {
      Blynk.logEvent("gempa_kecil");
      lcd.clear();
      lcd.setCursor(1, 1);
      lcd.println("TERJADI GEMPA !!");
      lcd.setCursor(5, 2);
      lcd.print(valueSR);
      lcd.println(" SR.");
      tone(pinBuzzer, 500);
      digitalWrite(ledKuning, HIGH);
      delay(500);
      noTone(pinBuzzer);
      digitalWrite(ledKuning, LOW);
      delay(500);
    }
    if (valueSR > 6) {
      Blynk.logEvent("gempa_besar");
      lcd.clear();
      lcd.setCursor(1, 1);
      lcd.println("TERJADI GEMPA !!");
      lcd.setCursor(5, 2);
      lcd.print(valueSR);
      lcd.println(" SR.");
      tone(pinBuzzer, 800);
      digitalWrite(ledMerah, HIGH);
      delay(250);
      noTone(pinBuzzer);
      digitalWrite(ledMerah, LOW);
      delay(250);
    }
  }
}