#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "hardware/i2c.h"
#include "i2c-display-lib.hpp"

#define BUTTON_PIN 26
#define LED_PIN 12
#define I2C_SDA 6
#define I2C_SCL 7

bool counting = false;
uint32_t seconds = 0;

void printIntToDisplay(int num) {
    // Temporary buffer to hold the integer as a string
    char buffer[20];
    snprintf(buffer, sizeof(buffer), "%d", num); // Convert integer to string
    i2cdisplay::print(buffer); // Print the string
}

void button_callback(uint gpio, uint32_t events) {
    counting = !counting; // Toggle counting on button press
}

int main() {
    i2cdisplay::init(I2C_SDA, I2C_SCL);
    
    gpio_init(BUTTON_PIN);
    gpio_set_dir(BUTTON_PIN, GPIO_IN);
    gpio_pull_up(BUTTON_PIN);
    gpio_set_irq_enabled_with_callback(BUTTON_PIN, GPIO_IRQ_EDGE_FALL, true, &button_callback);
    
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    i2cdisplay::home();
    i2cdisplay::clear();
    i2cdisplay::print("Press button to start");
    sleep_ms(2000); // Display for 2 seconds
    
    while (true) {
        if (counting) {
    seconds++;
    gpio_put(LED_PIN, 1); // Turn on LED
    sleep_ms(250); // Blink at 1 Hz
    gpio_put(LED_PIN, 0); // Turn off LED
    sleep_ms(250);
} else {
    // Perform actions opposite to the if block
    seconds--;
    gpio_put(LED_PIN, 1); // Turn off LED
    sleep_ms(250); // Delay to maintain the same timing as the if block
    gpio_put(LED_PIN, 0); // Turn on LED
    sleep_ms(250);
}

        i2cdisplay::clear();
        i2cdisplay::home();
        i2cdisplay::print("Seconds: ");
        printIntToDisplay(seconds); // Display the counter value
        sleep_ms(1000);
    }
}