#include <WiFi.h>
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
int Trig = 26;
int Echo = 25;
int Buzzer = 27;
int GREEN = 14;
int RED = 12;
int BLUE = 13;
int distance;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
   WiFi.mode(WIFI_STA);
  pinMode(Trig, OUTPUT);
  pinMode(Echo, INPUT);
  pinMode(Buzzer, INPUT);
  pinMode(RED, OUTPUT);
  pinMode(BLUE, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(34, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if(WiFi.status()!=WL_CONNECTED)
{
  Serial.print("Attempting to connect");
  while(WiFi.status()!=WL_CONNECTED)
  
  {
    WiFi.begin(ssid,pass);
    Serial.print(".");
    delay(3000);
  }
  Serial.println("\n connected");
  }
  delay(1000);
  
   int swch = digitalRead(34);
  Serial.println(swch);
  digitalWrite(Trig, HIGH);
  delay(100);
  digitalWrite(Trig, LOW);
  int reading = (pulseIn(Echo,HIGH));
  distance = (reading * 0.034/2)+1;
  if (swch == 1)
  {

  if (distance>300) 
  { 
  digitalWrite(14, HIGH);
    digitalWrite(12, LOW);
    digitalWrite(13, LOW);
    delay(500);
  }
  else if (distance>150)
  {
    digitalWrite(Buzzer, HIGH);
    digitalWrite(13, HIGH);
    digitalWrite(14, LOW);
    digitalWrite(12, LOW);
    tone(Buzzer,200);
    delay(1000);
    digitalWrite(Buzzer, LOW);
    noTone(Buzzer);
    delay(3000);
  }
  else if (distance<100)
  {
    digitalWrite(Buzzer, HIGH);
    digitalWrite(12, HIGH);
    digitalWrite(13, LOW);
    digitalWrite(14, LOW);
    tone(Buzzer,300);
    delay(500);
    digitalWrite(Buzzer, LOW);
    noTone(Buzzer);
    delay(100);
  }
  }
  else 
  {
    digitalWrite(12, LOW);
    digitalWrite(13, LOW);
    digitalWrite(14, LOW);
  }
    Serial.println("Ok, received");
  Serial.println(distance);
}