#include "mylib.h"
#define SMALLDELAY 200000
#define VERYSMALLDELAY 100000
#define LONGDELAY 500000


// Function declarations
void displaynumbers(long );
void displayalpha(char );
void loopnumbers(long, bool);
void loopalpha();
void displaysum();
long  takeinput();
void setup() {
  // put your setup code here, to run once:
  myinit();
  displaynumbers(0);        // display 0 by default
}
void displaynumbers(long num)
{
  char arr[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x67};

  output(arr[num]);
}
void displayalpha(char alpha)
{
  char alpharr[] = {0x77, 0x7F, 0x39, 0x3F, 0x79, 0x71};
  switch (alpha)
  {
    case 'A':
      output(alpharr[0]);
      break;
    case 'B':
      output(alpharr[1]);
      break;
    case 'C':
      output(alpharr[2]);
      break;
    case 'D':
      output(alpharr[3]);
      break;
    case 'E':
      output(alpharr[4]);
      break;
    case 'F':
      output(alpharr[5]);
      break;
  }
}
void loopnumbers(long start, bool reverse = false)
{
  if (reverse)
  { for (volatile long i = start; i >= 0; i--)
    {
      displaynumbers(i);
      timedelay(SMALLDELAY);
    }
  }
  else {
    for (volatile long i = start; i < 10; i++)
    {
      displaynumbers(i);
      timedelay(SMALLDELAY);
    }
  }
}
void loopalpha()
{
  for (volatile char alpha = 'A'; alpha <= 'F'; alpha++)
  {
    displayalpha(alpha);
    timedelay(SMALLDELAY);
  }
}
void displaysum() {
  long sum = 0;
  for (long i = 0; i < 4; i++) {
    sum += takeinput();
    timedelay(VERYSMALLDELAY);
  }
  // If sum is 10 or greater, reduce it to a single digit
  if (sum >= 10) {
    sum = sum % 10 + sum / 10;
  }
  timedelay(SMALLDELAY);
  displaynumbers(sum);
}

long takeinput() {
  // Wait for input to be received
  while (input() == 0) {
    // loop until a value is received
  }
  long value = input(); // Read the input value
  // Wait for input to be released
  switch (value)
  {
    case 1:
      value = 1;
      break;
    case 2:
      value = 2;
      break;
    case 4:
      value = 3;
      break;
    case 8:
      value = 4;
      break;
    case 16:
      value = 5;
      break;
    case 32:
      value = 6;
      break;
    case 64:
      value = 7;
      break;
    case 128:
      value = 8;
      break;

  }
  displaynumbers(value);
  while (input() != 0) {
    // loop until input is released
  }
  return value;
}
void loop() {
  // put your main code here, to run repeatedly:


  //   //Press any switch & displaynumbers that number.
  // Ex: 1 - > 1, 2 ->2, ... 8 -> 8.

  // (input() & 0x01)?displaynumbers(1):output(0x00);
  // (input() & 0x02)?displaynumbers(2):output(0x00);
  // (input() & 0x04)?displaynumbers(3):output(0x00);
  // (input() & 0x08)?displaynumbers(4):output(0x00);
  // (input() & 0x10)?displaynumbers(5):output(0x00);
  // (input() & 0x20)?displaynumbers(6):output(0x00);
  // (input() & 0x40)?displaynumbers(7):output(0x00);
  // (input() & 0x80)?displaynumbers(8):output(0x00);

  //Press any switch & displaynumbers the reverse order

  // Ex: 1 -> 8, 2-> 7, 8 -> 1

  // (input() & 0x01) ? displaynumbers(8) : output(0x00);
  // (input() & 0x02) ? displaynumbers(7) : output(0x00);
  // (input() & 0x04) ? displaynumbers(6) : output(0x00);
  // (input() & 0x08) ? displaynumbers(5) : output(0x00);
  // (input() & 0x10) ? displaynumbers(4) : output(0x00);
  // (input() & 0x20) ? displaynumbers(3) : output(0x00);
  // (input() & 0x40) ? displaynumbers(2) : output(0x00);
  // (input() & 0x80) ? displaynumbers(1) : output(0x00);

  //Press any switch & displaynumbers should start from
  // that number till nine and restart from that number
  // till 9. Continuous loop.

  // (input() & 0x01) ? loopnumbers(1) : output(0x00);
  //   (input() & 0x02) ? loopnumbers(2) : output(0x00);
  //   (input() & 0x04) ? loopnumbers(3) : output(0x00);
  //   (input() & 0x08) ? loopnumbers(4) : output(0x00);
  //   (input() & 0x10) ? loopnumbers(5) : output(0x00);
  //   (input() & 0x20) ? loopnumbers(6) : output(0x00);
  //   (input() & 0x40) ? loopnumbers(7) : output(0x00);
  //   (input() & 0x80) ? loopnumbers(8) : output(0x00);

  //Press switch 7 & displaynumbers from 0 to 9 and 9 to 0 one
  // time.
  // if (input() & 0x80)
  // { loopnumbers(0);
  //   loopnumbers(9, true);
  // }
  // else
  //   output(0x00);

  //Display A – F in a loop
  // loopalpha();

  //
  //   Initially display 0.

  // When switch 1 is pressed eVERY time increment by 1

  // if(input() & 0x01)
  // {

  //   static long num = 0;
  //   num++;
  //   if (num>9)
  //   {
  //     num = 9;
  //   }
  //   displaynumbers(num);
  //   timedelay(SMALLDELAY);
  // }

  //Initially display 9.
  // When switch 2 is pressed eVERY time decrement by 1
  // if(input() & 0x02)
  // {

  //   static long num = 9;
  //   num--;
  //   if (num<0)
  //   {
  //     num = 0;
  //   }
  //   displaynumbers(num);
  //   timedelay(SMALLDELAY);
  // }

  // Initially display 0
  // When switch 1 is pressed start displaying 0 to 9
  // Continuously. When switch 2 is pressed stop display.
  if (input() & 0x01)
  {
    for (static volatile long i = 1; i < 10; i++)
    {
      if (input() & 0x02)
      {
        break;
      }
      else
      {
        displaynumbers(i);
        timedelay(SMALLDELAY);
      }
    }
  }

  //   Initially display 9
  // When switch 1 is pressed start displaying 9 to 0
  // Continuously. When Switch 2 is pressed stop display.
  //make sure defualt output set to 9 in setup
  if (input() & 0x01)
  {
    for (static volatile long i = 8; i >= 0; i--)
    {
      if (input() & 0x02)
      {
        break;
      }
      else
      {
        displaynumbers(i);
        timedelay(SMALLDELAY);
      }
    }
  }

  //Get a 4 digit number from user (Press the switch
  // Sequentially (Example 1256) Add the sum of
  // Them the sum is more than 1 digit then add
  // them again and show the sum on display.

  // displaysum();
  // timedelay(LONGDELAY);
  // displaynumbers(0);


}