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

/* Fill-in information from Blynk Device Info here */
#define BLYNK_TEMPLATE_ID           "TMPL6Ine-LWO5"
#define BLYNK_TEMPLATE_NAME         "Quickstart Template"
#define BLYNK_AUTH_TOKEN            "w2Y-OQsWXCBIrJYKs_bZsFYErfx1dj6J"

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial

#define LED 23
#define PIN_ECHO 12
#define PIN_TRIG 13
#define Photo 14

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

const float GAMMA = 0.7;
const float RL10 = 50;

BlynkTimer timer;

// This function is called every time the Virtual Pin 0 state changes
BLYNK_WRITE(V0)
{
  digitalWrite(PIN_TRIG, OUTPUT);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);

  int duration = pulseIn(PIN_ECHO, HIGH);
  int distance = duration / 58;
  Serial.print("Distance in CM: ");
  Serial.println(distance);

  int photoValue = digitalRead(Photo);
  Serial.print("Photoresistor: ");
  Serial.println(photoValue);

  String value = "";

  if(distance < 50 || photoValue == HIGH){
    value = "ON";
    digitalWrite(LED,HIGH);
    delay(500);
    digitalWrite(LED,LOW);
    delay(500);
  }else{
    value = "OFF";
    delay(1000);
  }

  // Update state
  Blynk.virtualWrite(V1, value);
}

void setup() {
  Serial.begin(115200);

  pinMode(LED,OUTPUT);
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
  pinMode(Photo, INPUT);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
}

void loop() {
  Blynk.run();
  timer.run();
}