#include <stdio.h>
#include <stdint.h>
#include "utilities.h"
#include "io.hpp"
#include "gpio.hpp"
void enableFlushAfterPrintf()
{
    setvbuf(stdout, 0, _IONBF, 0);
    setvbuf(stdin, 0, _IONBF, 0);
}
int main(void)
{
    enableFlushAfterPrintf();
    GPIO pin20(P1_20); /* Use P1.20 as General Purpose Input/Output (GPIO) */
    pin20.setAsOutput(); /* Use this pin as OUTPUT */

    /* Turn on voltage to 3.3v */

    typedef enum
    {
        start, timer, pause, reset
    } statetype; // These are the cases and buttons that
    statetype currentState = start;
    bool sw1last, sw2last, sw3last = false;
    sw1last = sw2last = sw3last = false;
    int ms;
    int pausedvalue;
    int timerValue;
    int timerCounts;
    while (1)
    {
        bool sw1_pressed = SW.getSwitch(1);
        bool sw2_pressed = SW.getSwitch(2);
        bool sw3_pressed = SW.getSwitch(3);
        switch (currentState)
        {
            case start:
            {

                LD.setNumber(60);

                LE.off(1);
                pin20.setLow();
                if (sw1_pressed && sw1last == false)
                {
                    currentState = timer;
                    printf("Now starting timer\n");

                    timerValue = 60;
                    timerCounts = 0;

                }
                if (sw3_pressed && sw3last == false)
                {
                    currentState = reset;

                    pin20.setLow();
                    printf("Reseting timer");
                }
            }
            break;

            case timer:
            {
               
                int displayValue = timerValue - (timerCounts / 10);

                LD.setNumber( displayValue );
                timerCounts = timerCounts + 1;
               
                if(displayValue==0)
                {
                    LE.on(1);
                    pin20.setHigh();
                }
                if (sw2_pressed && sw2last == false)
                {
                    currentState = pause;
                    printf("Now paused\n");
                }
                if (sw3_pressed && sw3last == false)
                {
                    currentState = reset;

                    pin20.setLow();
                    printf("Reseting timer");
                }

            }
            break;
            case pause:
            {
                if (sw2_pressed && sw2last == false)
                {
                    currentState = timer;
                    printf("Resuming timer\n");
                    pin20.setLow();
                }
                if (sw3_pressed && sw3last == false)
                {
                    currentState = reset;

                    pin20.setLow();
                    printf("Reseting timer");
                }
            }
            break;
            case reset:
            {
                LD.setNumber(0);
                if (sw1_pressed && sw1last == false)
                {
                    currentState = start;
                    pin20.setLow();
                    printf("Starting timer");
                }
            }
            break;
            default:
            printf("State machine error\n");

        }

        sw1last = sw1_pressed;
        sw2last = sw2_pressed;
        sw3last = sw3_pressed;
        delay_ms(100);
    }
}