#include <Arduino.h>

#define LED_PIN_1 5   // Replace with the GPIO pin connected to the first LED
#define BUTTON_PIN_1 4 // Replace with the GPIO pin connected to the first button
#define LED_PIN_2 18  // Replace with the GPIO pin connected to the second LED
#define BUTTON_PIN_2 19 // Replace with the GPIO pin connected to the second button

unsigned long flashDuration = 6000; // 6 seconds duration for flashing
unsigned long pulseDuration = 80;  // 0.05 seconds duration for each pulse
unsigned long interPulseDelay = 80; // 0.05 seconds inter-pulse delay
unsigned long pauseDuration = 500;  // 0.5 second pause between pulse patterns

enum LedState
{
  OFF,
  FLASHING,
};

LedState ledState1 = OFF;
LedState ledState2 = OFF;

void setup()
{
  pinMode(LED_PIN_1, OUTPUT);
  pinMode(BUTTON_PIN_1, INPUT_PULLUP); // Assuming the button is normally open and pulled up externally
  pinMode(LED_PIN_2, OUTPUT);
  pinMode(BUTTON_PIN_2, INPUT_PULLUP); // Assuming the button is normally open and pulled up externally
}

void loop()
{
  // Check if button 1 is pressed
  if (digitalRead(BUTTON_PIN_1) == LOW)
  {
    ledState1 = FLASHING;
    flashLED(LED_PIN_1);
  }

  // Check if button 2 is pressed
  if (digitalRead(BUTTON_PIN_2) == LOW)
  {
    ledState2 = FLASHING;
    flashLED(LED_PIN_2);
  }
}

void flashLED(int ledPin)
{
  unsigned long flashStartTime = millis();

  // Keep flashing until the elapsed time exceeds the flash duration
  while (millis() - flashStartTime < flashDuration)
  {
    // Check if the other button is pressed
    if (digitalRead(LED_PIN_1 == ledPin ? BUTTON_PIN_2 : BUTTON_PIN_1) == LOW)
    {
      // If the other button is pressed, exit the function
      ledState1 = OFF;
      ledState2 = OFF;
      return;
    }

    // Pulse pattern: 8 pulses in 1 second
    for (int pulse = 0; pulse < 8; ++pulse)
    {
      digitalWrite(ledPin, HIGH);
      delay(pulseDuration);
      digitalWrite(ledPin, LOW);
      delay(interPulseDelay);
    }

    // Pause between pulse patterns
    delay(pauseDuration);
  }

  // Turn off the LED after flashing duration
  digitalWrite(ledPin, LOW);
  ledState1 = OFF;
  ledState2 = OFF;
}