#include <LedControl.h> // Library for LED control with MAX72XX
#include <Bounce2.h> // Library for Bounce of switches

/*
Pins of Arduino Nano for LedControl:
Pin #7 is connected to DataIn (DIN)
Pin #8 is connected to CLK (CLK)
Pin #9 is connected to LOAD (CS)
There is only one display with MAX72XX
*/
Bounce SW2 = Bounce(); // Define Bounce to read StartStop switch
Bounce SW1 = Bounce(); // Define Bounce to read StartStop switch
LedControl lc = LedControl(7, 8, 9, 1); // LedControl(dataPin, clkPin, csPin, numDevices)
int pinStartStop = 4; // Start-Stop Pin
int pin2 = 5;


bool setting = true;
int curPos = 0;
int switch_counter = 0;
unsigned long current_seconds = 0;


int hours_dec = 0;
int hours_int = 0;
int minutes_dec = 0;
int minutes_int = 0;
int seconds_dec = 0;
int seconds_int = 0;

void setup() {
  Serial.begin(9600);

pinMode (pinStartStop, INPUT_PULLUP);
pinMode (pin2, INPUT_PULLUP);
lc.shutdown(0, false); // The MAX72XX is in power-saving mode on startup, we have to do a wakeup call
lc.setIntensity(0, 2); // Set the brightness of display between 0 and 15
lc.clearDisplay(0); // Clear the display
//print_milis(0);
Serial.begin(9600);
pinMode (pinStartStop, INPUT_PULLUP);
SW1.attach(pinStartStop); // Sets the pin (Internal Pull-Up) & matches the internal state
SW1.interval(3); // Sets the debounce time in milliseconds
pinMode(3, OUTPUT);    // sets the digital pin 3 as output
SW2.attach(pin2); // Sets the pin (Internal Pull-Up) & matches the internal state
SW2.interval(2); // Sets the debounce time in milliseconds
pinMode(2, OUTPUT);    // sets the digital pin 2 as output

}

void setTime(int hours, int minutes, int seconds){
    lc.setDigit(0, 7, 0, false);
    lc.setDigit(0, 6, 0, false);
    lc.setDigit(0, 5, hours / 10, false);
    lc.setDigit(0, 4, hours % 10, true);


    lc.setDigit(0,3, minutes / 10, false);
    lc.setDigit(0,2, minutes % 10, true);
    lc.setDigit(0,1, seconds / 10, false);
    lc.setDigit(0,0,seconds % 10, false);
}

void loop() {


while(true){




  // SETTING UP TIME

  while(setting){

    SW1.update();
    SW2.update();



    if(SW1.fell()){
        switch_counter++;
        if(curPos < 5)
            curPos++;
        else
        {
            curPos = 0;
        }

    }

    if(SW2.fell()){
        switch_counter = 0;
        switch(curPos){

            case 0:
                {
                    if (seconds_int < 9){
                        seconds_int++;}
                    else
                        seconds_int = 0;

                    break;
                }

            case 1:
                {
                    if (seconds_dec < 5){
                        seconds_dec++;}
                    else
                        seconds_dec = 0;

                    break;
                }
            case 2:
                {
                    if (minutes_int < 9){
                        minutes_int++;}
                    else
                        minutes_int = 0;

                    break;
                }
            case 3:
                {
                    if (minutes_dec < 5){
                        minutes_dec++;}
                    else
                        minutes_dec = 0;

                    break;
                }
            case 4:
                {
                    if (hours_int < 9 && hours_dec < 2){
                        hours_int++;}
                    else if (hours_int < 3 && hours_dec == 2){
                        hours_int++;}
                    else
                        hours_int = 0;

                    break;
                }
            case 5:
                {
                    if (hours_dec < 2){
                        hours_dec++;}
                    else
                        hours_dec = 0;

                    break;
                }
        }
    }


    setTime(hours_dec * 10 + hours_int, minutes_dec * 10 + minutes_int, seconds_dec * 10 + seconds_int);
    if(switch_counter > 6)
    {
      current_seconds = seconds_int + seconds_dec * 10 + minutes_int * 60 + minutes_dec * 600 + hours_int * 3600 + hours_dec * 36000;
      setting = false;
      switch_counter=0;
    }


  }

  while(true){
        current_seconds++;
        if (current_seconds > 86399)
            current_seconds = 0;

        unsigned long hours = current_seconds/3600;
        unsigned long minutes = (current_seconds - hours * 3600) / 60;
        unsigned long seconds = current_seconds - hours * 3600 - minutes * 60;
        Serial.println(current_seconds);
        Serial.println(hours);
        Serial.println(minutes);
        Serial.println(seconds);
        Serial.println("---------------");
        SW1.update();
        if(SW1.fell())
        {
          setting=1;
          break;
        }


        setTime(hours, minutes, seconds);
        delay(998);
  }

}
}