#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6ty9WXX3w"
#define BLYNK_TEMPLATE_NAME "Project LawnMower"
#define BLYNK_AUTH_TOKEN "b0FJwG8VDShICJ8VzJjNDsVAS4iS4_bR"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <TridentTD_LineNotify.h> // เพิ่มไลบรารีสำหรับ Line Notify

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

const int pingPin = 5;
const int inPin = 18;

void setup() {
  Serial.begin(9600);
  Serial.println(LINE.getVersion());
  Blynk.begin(auth, ssid, pass);
  pinMode(pingPin, OUTPUT);
}

void loop() {
  Blynk.run();

  long duration, cm;

  digitalWrite(pingPin, LOW);
  delayMicroseconds(2);
  digitalWrite(pingPin, HIGH);
  delayMicroseconds(5);
  digitalWrite(pingPin, LOW);
  pinMode(inPin, INPUT);
  duration = pulseIn(inPin, HIGH);

  cm = microsecondsToCentimeters(duration);
  if(cm <= 50){
    LINE.setToken("dJz6GgyijlI8NoqUIYB4hi8nJaBKN4kCFU3GWfchiE2"); // กำหนด Token ของ Line Notify
    LINE.notify("อันตราย! มีสิ่งกีดขวางห่างไม่เกิน 50 cm");
    delay(2000);
  }
  Serial.print(cm);
  Serial.print("cm");
  Serial.println();
  delay(100);

  Blynk.virtualWrite(V2, cm);
}

long microsecondsToCentimeters(long microseconds) {
  return microseconds / 29 / 2;
}