#include <TM1637.h>
#include <TimerOne.h>
#include <ezButton.h>
#include <ArduinoTrace.h>

unsigned char hour = 7;
unsigned char minute = 7;
const int CLK = 2;
const int DIO = 3;

TM1637 tm(CLK, DIO);

ezButton timeSetBtn(5);  // create ezButton object that attach to pin 7;
ezButton hourBtn(6);  // create ezButton object that attach to pin 7;
ezButton minuteBtn(7);  // create ezButton object that attach to pin 7;

void setup()
{
  Serial.begin(115200);
  timeSetBtn.setDebounceTime(50); // set debounce time to 50 milliseconds
  hourBtn.setDebounceTime(50);
  minuteBtn.setDebounceTime(50);
  pinMode(5, INPUT_PULLUP);
  pinMode(6, INPUT_PULLUP);
  pinMode(7, INPUT_PULLUP);
  tm.init();
  tm.set(BRIGHT_TYPICAL);
}

unsigned long pm1;
void loop()
{
  timeSetBtn.loop();
  hourBtn.loop();
  minuteBtn.loop();
  tm.display(0, (hour/10) % 10);
  tm.display(1, hour % 10);
  tm.display(2, (minute/10) % 10);
  tm.display(3, minute % 10);
  increment();
  incrementminute();
  DUMP(hour);
  delay(10);
}


void increment()
{
enum {s0,s1,s2,s3};
static int state=s0;
  switch(state)
  {
    case s0:
      if(timeSetBtn.getState()==LOW)
      {  
        state=s1;
      }
    break;  
    case s1:
      if(hourBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {  
        pm1=millis();
        state=s2;
        if(hour<23)
        {
          hour++; 
        }

        else
        {
          hour=0;
        }
      }  
      else
      {
        state=s0;
      }  

    break;

    case s2:
      if(hourBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {   
        if((millis()-pm1)>800)
        {
          pm1=millis();
          state=s3;
        }
      }
      else
      {
        state=s0;
      }

    break;

    case s3:
      if(hourBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {   
        if((millis()-pm1)>250)
        {
          pm1=millis();
          if(hour<23)
          {
            hour++;
          }

          else
          {
            hour=0;
          }
        }
      }
      else
      {
        state=s0;
      }
    break;
  }
}


void incrementminute()
{
enum {s0,s1,s2,s3};
static int state=s0;
  switch(state)
  {
    case s0:
      if(timeSetBtn.getState()==LOW)
      {  
        state=s1;
      }
    break;  
    case s1:
      if(minuteBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {  
        pm1=millis();
        state=s2;
        if(minute<59)
        {
          minute++;
        }

        else
        {
          minute=0;
        }
      }  
      else
      {
        state=s0;
      }  

    break;

    case s2:
      if(minuteBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {   
        if((millis()-pm1)>800)
        {
          pm1=millis();
          state=s3;
        }
      }
      else
      {
        state=s0;
      }

    break;

    case s3:
      if(minuteBtn.getState()==LOW && timeSetBtn.getState()==LOW)
      {   
        if((millis()-pm1)>250)
        {
          pm1=millis();
          if(minute<59)
          {
            minute++;
          }

          else
          {
            minute=0;
            hour++;
          }
        }
      }
      else
      {
        state=s0;
      }
    break;
  }
}