//======== Deklarasi library Blynk ==========
#define BLYNK_TEMPLATE_ID "TMPLB09MLU8U"
#define BLYNK_TEMPLATE_NAME "PARKIR"
#define BLYNK_AUTH_TOKEN "7vEwAe9tnVtuIgJpIJ0VXfv52asVdkff"

#define BLYNK_PRINT Serial

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

char auth[] = BLYNK_AUTH_TOKEN;   //Token Blynk
//===========================================

//=============== Koneksi WiFi ==============
char ssid[] = "Wokwi-GUEST";   //Nama WiFi yang digunakan
char pass[] = "";   //Password WiFi

//============Deklarasi Sensor===============
#define trigPin 13
#define echoPin 12
#define LEDsystem 18
#define LEDalarm 19
#define BUZZ 32

BlynkTimer timer;
//===========================================

//============= Widget Blynk ================
WidgetLED led1(V3);
WidgetLCD lcd(V1);
//===========================================

//=========== Deklarasi variabel ============
long duration;
long distance;
//===========================================

void setup() {
  //===Debug console
  Serial.begin(115200);

  // Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  Blynk.begin(auth, ssid, pass);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8442);

  // code blynk akan jalan setiap 1 detik
  //timer.setInterval(10L, sendSensor);

  //===attempt to connect to Wifi network:
  configTime(0, 0, "pool.ntp.org");      // get UTC time via NTP

  Serial.print("Connecting to Wifi SSID ");
  Serial.print(ssid);
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(500);
  }
  Serial.print("\nWiFi connected. IP address: ");
  Serial.println(WiFi.localIP());

  // PIN sebagai...
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(BUZZ, OUTPUT);
  pinMode(LEDsystem, OUTPUT);
  pinMode(LEDalarm, OUTPUT);

  Startup();
}

void loop() {
  Blynk.run();
  if (digitalRead(LEDsystem) == HIGH)  {
    digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  
  //Set the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  //Read the echoPin, return to sound wave travel time to microseconds
  duration = pulseIn(echoPin, HIGH);
  
  //Calculating the distance
  distance = duration*0.034/2; //s=t*v
  
  //kirim data ke blynk
  Blynk.virtualWrite(V2, distance);   

  //LCD Di Blynk
  lcd.print (0, 0, "Monitoring Jarak");
  lcd.print (0, 1, "Jarak : " + String(distance) + " cm");
    timer.run();
    logic();

    Serial.print("Durasi: ");
    Serial.println(duration);
    Serial.print("Jarak: ");
    Serial.print(distance);
    Serial.print (" cm");
    Serial.println (" ");
    delay(100);
  }
  else  {
    digitalWrite(LEDsystem, LOW);
    Serial.println("Sistem OFF");
    delay(1000);
  }

}


//====================== Logika Jarak ==============================
void logic() {
  if ( distance <= 5) {

    Blynk.setProperty(V3, "color", "#FF0000"); //warna merah
    led1.on();
      digitalWrite(BUZZ, HIGH);
      digitalWrite(LEDalarm, HIGH);
      delay(60);
      digitalWrite(BUZZ, LOW);
      digitalWrite(LEDalarm, LOW);
      delay(30);
    //}
    Serial.println(" MEPET");
  }

  else if (( distance > 5 ) && ( distance < 15)) {

    Blynk.setProperty(V3, "color", "#FFE600"); // warna kuning
    led1.on();
      digitalWrite(BUZZ, HIGH);
      digitalWrite(LEDalarm, HIGH);
      delay(400);
      digitalWrite(BUZZ, LOW);
      digitalWrite(LEDalarm, LOW);
      delay(400);
    //}
    Serial.println ( " DEKAT");

  }

  else if ( distance >= 15) {
    Blynk.setProperty(V3, "color", "#2EFF26"); //warna hijau
    led1.on();
    delay(200);
    Serial.println ( " JAUH");

  }
}
//====================================================================

//======================= Kirim Data Sensor ==========================
void sendSensor() {
  //clear the trigPin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  
  //Set the trigPin on HIGH state for 10 micro seconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  //Read the echoPin, return to sound wave travel time to microseconds
  duration = pulseIn(echoPin, HIGH);
  
  //Calculating the distance
  distance = duration*0.034/2; //s=t*v
  
  //kirim data ke blynk
  Blynk.virtualWrite(V2, distance);   

  //LCD Di Blynk
  lcd.print (0, 0, "Monitoring Jarak");
  lcd.print (0, 1, "Jarak : " + String(distance) + " cm");
}
//====================================================================

//================== Bunyi Awal Saat Tersambung ======================
void Startup()  {
  // bunyi awal buzzer
  digitalWrite(BUZZ, HIGH);
  delay(500);
  digitalWrite(BUZZ, LOW);
  delay(500);
  digitalWrite(BUZZ, HIGH);
  delay(100);
  digitalWrite(BUZZ, LOW);
  delay(100);
  digitalWrite(BUZZ, HIGH);
  delay(300);
  digitalWrite(BUZZ, LOW);
  delay(200);
  digitalWrite(BUZZ, HIGH);
  delay(100);
  digitalWrite(BUZZ, LOW);
}
//====================================================================