/*
 *  C to assembler menu hook
 *
 */

#include <stdio.h>
#include <stdint.h>
#include <ctype.h>
#include <string.h>

#include "common.h"

 #define kClockRate 10000000
 #define kMaxNumLights 8

int mg_game_demo(int delay, char* pattern, int target);

void mgGame(int action)
{
  uint32_t delay, target;
  char pattern[kMaxNumLights + 1];
  char* pchar = NULL;
  int rc;

  if(action==CMD_SHORT_HELP) return;
  if(action==CMD_LONG_HELP) {
    printf("LED Game - Assignment 3\n\n"
       "This command tests new addition function\n"
       );

    return;
  }

  rc = fetch_uint32_arg(&delay);
  if(rc)
  {
    // Uses default delay
    delay = 1000 * (kClockRate/10000) * 1.5; // Equal to 1 second
  }
  else
  {
    delay = delay * (kClockRate/10000) * 1.5; // Converts the passed value into ms (milliseconds)
  }

  rc = fetch_string_arg(&pchar);
  if(rc)
  {
    // Uses default pattern
    strcpy(pattern, "01234567");
  }
  else
  {
    strcpy(pattern, pchar);

    if(strlen(pchar) != 8) // Check if received exactly 8 digits
    {
      printf("ERROR: Invalid number of digits for LED pattern. REQUIRED: 8 digits\n");
      return;
    }

    while(*pchar != '\0') // Check if all numbers are valid
    {
      if (*pchar == '9')
      {
        printf("ERROR: 9 is an invalid digit for the pattern. Use only 0 to 8.\n");
        return;
      }
      pchar++;
    }
  }

  rc = fetch_uint32_arg(&target);
  if(rc)
  {
    target = 5;
  }

  mg_game_demo(delay,pattern,target);
}

ADD_CMD("mgGame", mgGame,"\t\t LED Game for Assignment 3")