//
//  ccallsign.cpp
//  xlxd
//
//  Created by Jean-Luc Deltombe (LX3JL) on 31/10/2015.
//  Copyright © 2015 Jean-Luc Deltombe (LX3JL). All rights reserved.
//
// ----------------------------------------------------------------------------
//    This file is part of xlxd.
//
//    xlxd is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    xlxd is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Foobar.  If not, see <http://www.gnu.org/licenses/>. 
// ----------------------------------------------------------------------------

#include "main.h"
#include <string.h>
#include <cctype>
#include "ccallsign.h"

////////////////////////////////////////////////////////////////////////////////////////
// constructors

CCallsign::CCallsign()
{
    // blank all
    ::memset(m_Callsign, ' ', sizeof(m_Callsign));
}

CCallsign::CCallsign(const char *sz)
{
    ::memset(m_Callsign, ' ', sizeof(m_Callsign));
    ::memcpy(m_Callsign, sz, MIN(strlen(sz), sizeof(m_Callsign)));
}

CCallsign::CCallsign(const CCallsign &callsign)
{
    ::memcpy(m_Callsign, callsign.m_Callsign, sizeof(m_Callsign));
}

////////////////////////////////////////////////////////////////////////////////////////
// status

bool CCallsign::IsValid(void) const
{
    bool valid = true;
    int i;
    
    // callsign
    // first 3 chars are letter or number but cannot be all number
    int iNum = 0;
    for ( i = 0; i < 3; i++ )
    {
        valid &= IsLetter(m_Callsign[i]) || IsNumber(m_Callsign[i]);
        if ( IsNumber(m_Callsign[i]) )
        {
            iNum++;
        }
    }
    valid &= (iNum < 3);
    // all remaining char are letter, number or space
    for ( ; i < CALLSIGN_LEN; i++)
    {
        valid &= IsLetter(m_Callsign[i]) || IsNumber(m_Callsign[i]) || IsSpace(m_Callsign[i]);
    }
    
    // done
    return valid;
}


////////////////////////////////////////////////////////////////////////////////////////
// set

void CCallsign::SetCallsign(const char *sz)
{
    // set callsign
    ::memset(m_Callsign, ' ', sizeof(m_Callsign));
    ::memcpy(m_Callsign, sz, MIN(strlen(sz), sizeof(m_Callsign)));
}

void CCallsign::SetCallsign(const uint8 *buffer, int len)
{
    // set callsign
    ::memset(m_Callsign, ' ', sizeof(m_Callsign));
    ::memcpy(m_Callsign, buffer, MIN(len, sizeof(m_Callsign)));
    for ( int i = 0; i < sizeof(m_Callsign); i++ )
    {
        if ( m_Callsign[i] == 0 )
        {
            m_Callsign[i] = ' ';
        }
    }
}


////////////////////////////////////////////////////////////////////////////////////////
// modify

void CCallsign::PatchCallsign(int off, const uint8 *patch, int len)
{
    if ( off < sizeof(m_Callsign) )
    {
        ::memcpy(m_Callsign, patch, MIN(len, sizeof(m_Callsign) - off));
    }
}


////////////////////////////////////////////////////////////////////////////////////////
// get

void CCallsign::GetCallsign(uint8 *buffer) const
{
    ::memcpy(buffer, m_Callsign, sizeof(m_Callsign));
}

void CCallsign::GetCallsignString(char *sz) const
{
    int i;
    for ( i = 0; (i < sizeof(m_Callsign)) && (m_Callsign[i] != ' '); i++ )
    {
        sz[i] = m_Callsign[i];
    }
    sz[i] = 0;
}

////////////////////////////////////////////////////////////////////////////////////////
// compare

bool CCallsign::HasSameCallsign(const CCallsign &Callsign) const
{
    return (::memcmp(m_Callsign, Callsign.m_Callsign, sizeof(m_Callsign)) == 0);
}

bool CCallsign::HasSameCallsignWithWildcard(const CCallsign &callsign) const
{
    bool same = true;
    bool done = false;
    
    for ( int i = 0; (i < sizeof(m_Callsign)) && same && !done; i++ )
    {
        if ( !(done = ((m_Callsign[i] == '*') || (callsign[i] == '*'))) )
        {
            same &= (m_Callsign[i] == callsign[i]);
        }
    }
    return same;
}


////////////////////////////////////////////////////////////////////////////////////////
// operators

bool CCallsign::operator ==(const CCallsign &callsign) const
{
    return (::memcmp(callsign.m_Callsign, m_Callsign, sizeof(m_Callsign)) == 0);
}

CCallsign::operator const char *() const
{
	char *sz = (char *)(const char *)m_sz;
	
	// empty
	::memset(sz, 0, sizeof(m_sz));	
    // callsign
    sz[CALLSIGN_LEN] = 0;
    ::memcpy(sz, m_Callsign, sizeof(m_Callsign));
      
    // done
    return m_sz;
}

////////////////////////////////////////////////////////////////////////////////////////
// helper

bool CCallsign::IsNumber(char c) const
{
    return ((c >= '0') && (c <= '9'));
}

bool CCallsign::IsLetter(char c) const
{
    return ((c >= 'A') && (c <= 'Z'));
}

bool CCallsign::IsSpace(char c) const
{
    return (c == ' ');
}