/**
* 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 "p25/lc/tsbk/OSP_ADJ_STS_BCAST.h"
#include "Log.h"
#include "Utils.h"

using namespace p25::lc::tsbk;
using namespace p25::lc;
using namespace p25;

#include <cassert>
#include <cmath>

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

/// <summary>
/// Initializes a new instance of the OSP_ADJ_STS_BCAST class.
/// </summary>
OSP_ADJ_STS_BCAST::OSP_ADJ_STS_BCAST() : TSBK(),
    m_adjCFVA(P25_CFVA_FAILURE),
    m_adjRfssId(0U),
    m_adjSiteId(0U),
    m_adjChannelId(0U),
    m_adjChannelNo(0U),
    m_adjServiceClass(P25_SVC_CLS_INVALID)
{
    m_lco = TSBK_OSP_ADJ_STS_BCAST;
}

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

    uint8_t tsbk[P25_TSBK_LENGTH_BYTES + 1U];
    ::memset(tsbk, 0x00U, P25_TSBK_LENGTH_BYTES);

    bool ret = TSBK::decode(data, tsbk, rawTSBK);
    if (!ret)
        return false;

    ulong64_t tsbkValue = TSBK::toValue(tsbk);

    m_adjSysId = (uint32_t)((tsbkValue >> 40) & 0xFFFU);                            // Site System ID
    m_adjRfssId = (uint8_t)((tsbkValue >> 32) & 0xFFU);                             // Site RFSS ID
    m_adjSiteId = (uint8_t)((tsbkValue >> 24) & 0xFFU);                             // Site ID
    m_adjChannelId = (uint8_t)((tsbkValue >> 20) & 0xFU);                           // Site Channel ID
    m_adjChannelNo = (uint32_t)((tsbkValue >> 8) & 0xFFFU);                         // Site Channel Number
    m_adjServiceClass = (uint8_t)(tsbkValue & 0xFFU);                               // Site Service Class

    return true;
}

/// <summary>
/// Encode a trunking signalling block.
/// </summary>
/// <param name="data"></param>
/// <param name="rawTSBK"></param>
/// <param name="noTrellis"></param>
void OSP_ADJ_STS_BCAST::encode(uint8_t* data, bool rawTSBK, bool noTrellis)
{
    assert(data != NULL);

    ulong64_t tsbkValue = 0U;

    tsbkValue = m_siteData.lra();                                                   // Location Registration Area
    tsbkValue = (tsbkValue << 4) +
        (m_siteData.netActive()) ? P25_CFVA_NETWORK : 0U;                           // CFVA
    tsbkValue = (tsbkValue << 12) + m_siteData.sysId();                             // System ID
    tsbkValue = (tsbkValue << 8) + m_siteData.rfssId();                             // RF Sub-System ID
    tsbkValue = (tsbkValue << 8) + m_siteData.siteId();                             // Site ID
    tsbkValue = (tsbkValue << 4) + m_siteData.channelId();                          // Channel ID
    tsbkValue = (tsbkValue << 12) + m_siteData.channelNo();                         // Channel Number
    tsbkValue = (tsbkValue << 8) + m_siteData.serviceClass();                       // System Service Class

    std::unique_ptr<uint8_t[]> tsbk = TSBK::fromValue(tsbkValue);
    TSBK::encode(data, tsbk.get(), rawTSBK, noTrellis);
}

/// <summary>
/// Returns a string that represents the current TSBK.
/// </summary>
/// <param name="isp"></param>
/// <returns></returns>
std::string OSP_ADJ_STS_BCAST::toString(bool isp)
{
    return std::string("TSBK_OSP_ADJ_STS_BCAST (Adjacent Site Status Broadcast)");
}

// ---------------------------------------------------------------------------
//  Private Class Members
// ---------------------------------------------------------------------------

/// <summary>
/// Internal helper to copy the the class.
/// </summary>
/// <param name="data"></param>
void OSP_ADJ_STS_BCAST::copy(const OSP_ADJ_STS_BCAST& data)
{
    TSBK::copy(data);

    m_adjCFVA = data.m_adjCFVA;
    m_adjRfssId = data.m_adjRfssId;
    m_adjSiteId = data.m_adjSiteId;
    m_adjChannelId = data.m_adjChannelId;
    m_adjChannelNo = data.m_adjChannelNo;
    m_adjServiceClass = data.m_adjServiceClass;
}
