/**
* Digital Voice Modem - Host Software
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* @package DVM / Host Software
*
*/
/*
*   Copyright (C) 2022 by Bryan Biedenkapp N2PLL
*
*   This program 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 2 of the License, or
*   (at your option) any later version.
*
*   This program 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 this program; if not, write to the Free Software
*   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "Defines.h"
#include "dmr/lc/csbk/CSBK_TD_GRANT.h"
#include "Log.h"
#include "Utils.h"

using namespace dmr::lc::csbk;
using namespace dmr::lc;
using namespace dmr;

#include <cassert>
#include <cmath>

// ---------------------------------------------------------------------------
//  Public Class Members
// ---------------------------------------------------------------------------

/// <summary>
/// Initializes a new instance of the CSBK_TD_GRANT class.
/// </summary>
CSBK_TD_GRANT::CSBK_TD_GRANT() : CSBK()
{
    m_CSBKO = CSBKO_TD_GRANT;
}

/// <summary>
/// Decode a control signalling block.
/// </summary>
/// <param name="data"></param>
/// <returns>True, if CSBK was decoded, otherwise false.</returns>
bool CSBK_TD_GRANT::decode(const uint8_t* data)
{
    assert(data != NULL);

    /* stub */

    return true;
}

/// <summary>
/// Encode a control signalling block.
/// </summary>
/// <param name="data"></param>
void CSBK_TD_GRANT::encode(uint8_t* data)
{
    assert(data != NULL);

    ulong64_t csbkValue = 0U;

    csbkValue = (csbkValue << 12) + (m_logicalCh1 & 0xFFFU);                        // Logical Physical Channel 1
    csbkValue = (csbkValue << 1) + ((m_slotNo == 2U) ? 1U : 0U);                    // Logical Slot Number
    csbkValue = (csbkValue << 1) + 0U;                                              // High Rate Flag - Always Single Slot Data
    csbkValue = (csbkValue << 1) + ((m_emergency) ? 1U : 0U);                       // Emergency
    csbkValue = (csbkValue << 1) + ((m_siteOffsetTiming) ? 1U : 0U);                // Site Timing: Aligned or Offset
    csbkValue = (csbkValue << 24) + m_dstId;                                        // Talkgroup ID
    csbkValue = (csbkValue << 24) + m_srcId;                                        // Source Radio Address

    std::unique_ptr<uint8_t[]> csbk = CSBK::fromValue(csbkValue);
    CSBK::encode(data, csbk.get());
}

/// <summary>
/// Returns a string that represents the current CSBK.
/// </summary>
/// <returns></returns>
std::string CSBK_TD_GRANT::toString()
{
    return std::string("CSBKO_TD_GRANT (Talkgroup Data Channel Grant)");
}
