// -----------------------------------------------------------------------------
/// @file  PIN.c
/// @brief Description
// -----------------------------------------------------------------------------
//  Micro-Key bv
//  Industrieweg 28, 9804 TG Noordhorn
//  Postbus 92, 9800 AB Zuidhorn
//  The Netherlands
//  Tel: +31 594 503020
//  Fax: +31 594 505825
//  Email: support@microkey.nl
//  Web: www.microkey.nl
// -----------------------------------------------------------------------------
/// $Revision$
/// $Author$
/// $Date$
//  (c) 2017 Micro-Key bv
// -----------------------------------------------------------------------------

/// @file PIN.c
/// @ingroup {group_name}


// -----------------------------------------------------------------------------
// Include files
// -----------------------------------------------------------------------------

#include <string.h>

#include "PIN.h"

#include "Logger.h"
// -----------------------------------------------------------------------------
// Constant and macro definitions
// -----------------------------------------------------------------------------



// -----------------------------------------------------------------------------
// Type definitions
// -----------------------------------------------------------------------------


// -----------------------------------------------------------------------------
// File-scope variables
// -----------------------------------------------------------------------------



// -----------------------------------------------------------------------------
// Function declarations
// -----------------------------------------------------------------------------

static ErrorStatus PIN_verifyInsertedPins(struct PIN* self);

// -----------------------------------------------------------------------------
// Function definitions
// -----------------------------------------------------------------------------


void PIN_generateDefaultPIN(struct PIN* self)
{
   self->firstDigit     = 0;
   self->secondDigit    = 1;
   self->thirdDigit     = 2;
   self->fourthDigit    = 3;
}


bool PIN_isOK(struct PIN* self, char* const pin)
{
   bool returnValue = false;

   if (pin[0] == self->firstDigit)
   {
      if (pin[1] == self->secondDigit)
      {
         if (pin[2] == self->thirdDigit)
         {
            if (pin[3] == self->fourthDigit)
            {
               returnValue = true;
            }
         }
      }
   }
   return returnValue;
}


void PIN_changePinFirstInsert(struct PIN* self, char* const firstPinInsert)
{
   int loopCounter;
   if (firstPinInsert != NULL)
   {
      for (loopCounter = 0; loopCounter < PIN_NUMBER_OF_DIGITS; loopCounter++)
      {
         self->pinchangeFirstInsert[loopCounter] = firstPinInsert[loopCounter];
      }
   }
}


ErrorStatus PIN_changePinSecondInsert(struct PIN* self, char* const secondPinInsert)
{
   ErrorStatus returnValue = SUCCESS;

   int loopCounter;
   if (secondPinInsert != NULL)
   {
      for (loopCounter = 0; loopCounter < PIN_NUMBER_OF_DIGITS; loopCounter++)
      {
         self->pinchangeSecondInsert[loopCounter] = secondPinInsert[loopCounter];
      }
   }

   returnValue = PIN_verifyInsertedPins(self);
   // Verify both PINs
   if (returnValue == SUCCESS)
   {
      self->firstDigit  = self->pinchangeFirstInsert[0];
      self->secondDigit = self->pinchangeFirstInsert[1];
      self->thirdDigit  = self->pinchangeFirstInsert[2];
      self->fourthDigit = self->pinchangeFirstInsert[3];
   }

   return returnValue;
}


static ErrorStatus PIN_verifyInsertedPins(struct PIN* self)
{
   ErrorStatus returnValue = SUCCESS;

   if (returnValue == SUCCESS)
   {
      if (strlen(self->pinchangeFirstInsert) != PIN_NUMBER_OF_DIGITS)
      {
         returnValue = ERROR;
      }
   }

   if (returnValue == SUCCESS)
   {
      if (strlen(self->pinchangeSecondInsert) != PIN_NUMBER_OF_DIGITS)
      {
         returnValue = ERROR;
      }
   }

   if (returnValue == SUCCESS)
   {
      if(strncmp(self->pinchangeFirstInsert, self->pinchangeSecondInsert, PIN_NUMBER_OF_DIGITS) != 0)
      {
         // Inserted PINs are not equal
         returnValue = ERROR;
      }
   }
   return returnValue;
}