#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"

#define LED_PIN 16
#define BUTTON_TOGGLE 15

volatile bool reverse_pattern = false;

void button_isr(){
  reverse_pattern = !reverse_pattern;
}

// Function to blink LED
void blinkLED(int blink_count) {
  for (int i = 0; i < blink_count; i++) {
    gpio_put(LED_PIN, 1);
    sleep_ms(250);
    gpio_put(LED_PIN, 0);
    sleep_ms(250);
    printf("%d\n", i+1);
  }
}

// Function to introduce delay in seconds
void delay(int seconds) {
    for (int i = 0; i < seconds; i++) {
      sleep_ms(1000);
    }
}

int main() {
  stdio_init_all();

  gpio_init(LED_PIN);
  gpio_set_dir(LED_PIN, GPIO_OUT);

  gpio_init(BUTTON_TOGGLE);
  gpio_set_dir(BUTTON_TOGGLE, GPIO_IN);
  gpio_pull_up(BUTTON_TOGGLE);

  gpio_set_irq_enabled_with_callback(BUTTON_TOGGLE, GPIO_IRQ_EDGE_FALL, true, &button_isr); // Enable interrupt on button press
  int blink_count[3] = {10, 20, 30}; // Initial blink counts

  while (true) {
  // Blink LEDs according to current blink pattern
  if(!reverse_pattern){
    for (int i = 0; i < 3; i++) {
    blinkLED(blink_count[i]);
    delay(60); // Delay for one minute
    }
  }
  else{
    printf("Button Pressed");
    for (int i = 2; i >=0 ; i--) {
    blinkLED(blink_count[i]);
    delay(60); // Delay for one minute
    }
  }
 }
  return 0;
}