Arduino clap. switch to LIGHT...

// Clap Light Switch// G.S Entertainments// https://www.youtube.com/channel/UCqP5Jo6e137TOrKd5t0hzjA
int mic = 2;       // microphone moduleint indicLED = 13; // indication pinint lightPin = 9;  // relay (lights control)bool lightState = true;bool ignoreInt = false;bool ClapDetected = false;uint32_t ClapDetetedTime [3] {};
void setup() {  Serial.begin(115200);  pinMode(indicLED, OUTPUT);      pinMode(lightPin, OUTPUT);    digitalWrite(lightPin, lightState);  attachInterrupt(digitalPinToInterrupt(mic), ISR_ClapDetected, FALLING);}
void loop() {delay(2);
if(millis() - ClapDetetedTime[2] >= 10){  digitalWrite(indicLED, LOW);}
if(millis() - ClapDetetedTime[2] < 10 && millis() - ClapDetetedTime[1] < 800 && ClapDetected && ClapDetetedTime[1] - ClapDetetedTime[0]>=800)  {    Serial.println("double clap detected");    digitalWrite(indicLED, LOW);    Serial.print("Setting light to ");    Serial.println(String(!lightState));    digitalWrite(lightPin, lightState);    lightState=!lightState;    ClapDetected = false;  }}
void ISR_ClapDetected(){  if(millis() - ClapDetetedTime[2] > 10){ // debounce
  for (int i = 0; i != 2; i++) {  ClapDetetedTime[i] = ClapDetetedTime[i + 1];  }
  ClapDetetedTime[2] = millis();  ClapDetected = true;  Serial.println("clap detected");  digitalWrite(indicLED, HIGH);  }}