#include <LedControl.h>
#include <Keypad.h>

// Display a digit on a 7-segent display
LedControl mydisplay = LedControl(13, 12, 11, 1);

// Digital Keypad 4x3
const byte rows = 4; //four rows
const byte cols = 3; //three columns
char keys[rows][cols] = {
  {'1','2','3'},
  {'4','5','6'},
  {'7','8','9'},
  {'#','0','*'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[rows] = {1, 6, 5, 3};
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[cols] = {2, 0, 4};
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, rows, cols );

char PROGRAM; // What type of program
int i = 0;
void setup()
{

   mydisplay.shutdown(0, false);  // turns on display
   mydisplay.setIntensity(0, 15); // 15 = brightest

   pinMode(13, OUTPUT); // Green LED
   digitalWrite(13, 0); // Green LED low

   PROGRAM = kpd.waitForKey(); // waint until pressed key
   LED(); // blink
}

void loop()
{
  if (PROGRAM == '1')
  {
    // MÄSKPROCESS
  }
  else if (PROGRAM == '2')
  {
    // KOKPROCESS
  }
  else if (PROGRAM == '3')
  {
    // KYLPROCESS
  }
  else
  {
    show_digit(0); // show zero only 0000
    PROGRAM = kpd.waitForKey(); // Waint until a key are pressed
    LED(); // blink
  }

}

void setTimeHumle()
{

}

void speaker()
{

}

void setEndTimeKok()
{

}

void setTempKok()
{

}

void setBeginTimeLak()
{

}

void setTempLak()
{

}

void relay_kok()
{

}

void relay_lak()
{

}

void getTempKok()
{

}

void getTempLak()
{

}

int tempsensor_kok()
{
  // get average temperature
}

int tempsensor_lak()
{
  // get average temperature
}

int digitalKeyPad()
{

}

void show_digit(int i)
{
  // if i is 4 digit
  if (i >= 1000)
  {
    String str = String(i);
    int a = str[0] - '0';
    int b = str[1] - '0';
    int c = str[2] - '0';
    int d = str[3] - '0';
    mydisplay.setDigit(0, 0, a, false);
    mydisplay.setDigit(0, 1, b, true);
    mydisplay.setDigit(0, 2, c, false);
    mydisplay.setDigit(0, 3, d, false);
  }
  // if i is 3 digit
  else if (i <= 999 && i >= 100)
  {
    String str = String(i);
    int a = str[0] - '0';
    int b = str[1] - '0';
    int c = str[2] - '0';
    mydisplay.setDigit(0, 0, 0, false);
    mydisplay.setDigit(0, 1, a, true);
    mydisplay.setDigit(0, 2, b, false);
    mydisplay.setDigit(0, 3, c, false);
  }
  // if i is 2 digit
  else if(i < 100 && i >= 10)
  {
    String str = String(i);
    int a = str[0] - '0';
    int b = str[1] - '0';
    mydisplay.setDigit(0, 0, 0, false);
    mydisplay.setDigit(0, 1, 0, false);
    mydisplay.setDigit(0, 2, a, false);
    mydisplay.setDigit(0, 3, b, false);
  }
  else // if i is 1 digit
  {
    String str = String(i);
    int a = str[0] - '0';
    mydisplay.setDigit(0, 0, 0, false);
    mydisplay.setDigit(0, 1, 0, false);
    mydisplay.setDigit(0, 2, 0, false);
    mydisplay.setDigit(0, 3, a, false);
  }
}

// Blink the LED if any button is pressed.
void LED()
{
  int A = 1;
  for (int i = 0; i <= 10; i++)
  {
    digitalWrite(13, A);
    delay(100);
    if (A == 1)
    {
      A = 0;
    }
    else
    {
      A = 1;
    }
  }
}