#include "csvreader.hh"
#include "config.hh"
#include "utils.hh"
#include "logger.hh"

#include <QRegularExpression>
#include <QDebug>

QVector< QPair<QRegularExpression, CSVLexer::Token::TokenType> > CSVLexer::_pattern = {
  { QRegularExpression("^n([0-9]{3})"),                     CSVLexer::Token::T_DCS_N },
  { QRegularExpression("^i([0-9]{3})"),                     CSVLexer::Token::T_DCS_I },
  { QRegularExpression("^([a-zA-Z0-9]{1,6}-[0-9]{1,2})"),   CSVLexer::Token::T_APRSCALL },
  { QRegularExpression("^([a-zA-Z_][a-zA-Z0-9_]*)"),        CSVLexer::Token::T_KEYWORD },
  { QRegularExpression("^\"([^\"\r\n]*)\""),                CSVLexer::Token::T_STRING },
  { QRegularExpression("^([+-]?[0-9]+(\\.[0-9]*)?)"),       CSVLexer::Token::T_NUMBER },
  { QRegularExpression("^(:)"),                             CSVLexer::Token::T_COLON },
  { QRegularExpression("^(-)"),                             CSVLexer::Token::T_NOT_SET },
  { QRegularExpression("^(\\+)"),                           CSVLexer::Token::T_ENABLED },
  { QRegularExpression("^(,)"),                             CSVLexer::Token::T_COMMA },
  { QRegularExpression("^([ \t]+)"),                        CSVLexer::Token::T_WHITESPACE },
  { QRegularExpression("^(\r?\n)"),                         CSVLexer::Token::T_NEWLINE},
  { QRegularExpression("^(#[^\n\r]*)"),                     CSVLexer::Token::T_COMMENT},
};


/* ********************************************************************************************* *
 * Implementation of CSVLexer
 * ********************************************************************************************* */
CSVLexer::CSVLexer(QTextStream &stream, QObject *parent)
  : QObject(parent), _errorMessage(), _stream(stream), _stack(), _currentLine()
{
  _stream.seek(0);
  _stack.reserve(10);
  _stack.push_back({0, 1, 1});
  _currentLine = _stream.readLine();
}

const QString &
CSVLexer::errorMessage() const {
  return _errorMessage;
}

CSVLexer::Token
CSVLexer::next() {
  Token token = lex();
  while ((Token::T_WHITESPACE == token.type) || (Token::T_COMMENT == token.type))
    token = lex();
  return token;
}

CSVLexer::Token
CSVLexer::lex() {
  if (_currentLine.isEmpty() && _stream.atEnd()) {
    return {Token::T_END_OF_STREAM, "", _stack.back().line, _stack.back().column };
  } else if (_currentLine.isEmpty()) {
    Token token = {Token::T_NEWLINE, "", _stack.back().line, _stack.back().column };
    _stack.back().offset = _stream.pos();
    _currentLine = _stream.readLine();
    _stack.back().line++;
    _stack.back().column = 1;
    return token;
  }
  foreach (auto pattern, _pattern) {
    auto match = pattern.first.match(_currentLine);
    if (0 == match.capturedStart()) {
      Token token = {pattern.second, match.captured(1), _stack.back().line, _stack.back().column};
      _stack.back().offset += match.capturedLength();
      _stack.back().column += token.value.size();
      _currentLine = _currentLine.mid(match.capturedLength());
      return token;
    }
  }
  _errorMessage = tr("Lexer error %1,%2: Unexpected char '%3'.").arg(_stack.back().line)
      .arg(_stack.back().column).arg(_currentLine.at(0));
  return {Token::T_ERROR, _errorMessage, _stack.back().line, _stack.back().column};
}

void
CSVLexer::push() {
  _stack.push_back(_stack.back());
}

void
CSVLexer::pop() {
  if (_stack.size() < 2)
    return;
  _stack.pop_back();
  _stream.seek(_stack.back().offset);
  _currentLine = QString();
}

/* ********************************************************************************************* *
 * Implementation of CSVHandler
 * ********************************************************************************************* */
CSVHandler::CSVHandler(QObject *parent)
  : QObject(parent)
{
  // pass...
}

CSVHandler::~CSVHandler() {
  // pass...
}

bool
CSVHandler::handleRadioId(const QList<qint64> &ids, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(ids);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage)
  return true;
}

bool
CSVHandler::handleRadioName(const QString &name, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(name);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleIntroLine1(const QString &text, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(text);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleIntroLine2(const QString &text, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(text);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleMicLevel(unsigned level, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(level);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleSpeech(bool speech, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(speech);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleDTMFContact(qint64 idx, const QString &name, const QString &num, bool rxTone,
                              qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(num);
  Q_UNUSED(rxTone);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleDigitalContact(qint64 idx, const QString &name, DMRContact::Type type, qint64 id,
                                 bool rxTone, qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(type);
  Q_UNUSED(id);
  Q_UNUSED(rxTone);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleGroupList(qint64 idx, const QString &name, const QList<qint64> &contacts,
                            qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(contacts);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleDigitalChannel(qint64 idx, const QString &name, double rx, double tx, Channel::Power power, qint64 scan,
    qint64 tot, bool ro, DMRChannel::Admit admit, qint64 color, DMRChannel::TimeSlot slot,
    qint64 gl, qint64 contact, qint64 gps, qint64 roam, qint64 radioID, qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(rx);
  Q_UNUSED(tx);
  Q_UNUSED(power);
  Q_UNUSED(scan);
  Q_UNUSED(tot);
  Q_UNUSED(ro);
  Q_UNUSED(admit);
  Q_UNUSED(color);
  Q_UNUSED(slot);
  Q_UNUSED(gl);
  Q_UNUSED(contact);
  Q_UNUSED(gps);
  Q_UNUSED(roam);
  Q_UNUSED(radioID);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleAnalogChannel(qint64 idx, const QString &name, double rx, double tx, Channel::Power power, qint64 scan,
    qint64 aprs, qint64 tot, bool ro, FMChannel::Admit admit, qint64 squelch, const SelectiveCall &rxTone, const SelectiveCall &txTone,
    FMChannel::Bandwidth bw, qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(rx);
  Q_UNUSED(tx);
  Q_UNUSED(power);
  Q_UNUSED(scan);
  Q_UNUSED(aprs);
  Q_UNUSED(tot);
  Q_UNUSED(ro);
  Q_UNUSED(admit);
  Q_UNUSED(squelch);
  Q_UNUSED(rxTone);
  Q_UNUSED(txTone);
  Q_UNUSED(bw);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleZone(qint64 idx, const QString &name, bool a, const QList<qint64> &channels,
                       qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(a);
  Q_UNUSED(channels);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleGPSSystem(
    qint64 idx, const QString &name, qint64 contactIdx, qint64 period, qint64 revertChannelIdx,
    qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(contactIdx);
  Q_UNUSED(period);
  Q_UNUSED(revertChannelIdx);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleAPRSSystem(qint64 idx, const QString &name, qint64 channelIdx, qint64 period,
    const QString &src, unsigned srcSSID, const QString &dest, unsigned destSSID, const QString &path,
    const QString &icon, const QString &message, qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(channelIdx);
  Q_UNUSED(period);
  Q_UNUSED(src);
  Q_UNUSED(srcSSID);
  Q_UNUSED(dest);
  Q_UNUSED(destSSID);
  Q_UNUSED(path);
  Q_UNUSED(icon);
  Q_UNUSED(message);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleScanList(qint64 idx, const QString &name, qint64 pch1, qint64 pch2, qint64 txch,
                           const QList<qint64> &channels, qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(pch1);
  Q_UNUSED(pch2);
  Q_UNUSED(txch);
  Q_UNUSED(channels);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}

bool
CSVHandler::handleRoamingZone(qint64 idx, const QString &name, const QList<qint64> &channels,
                              qint64 line, qint64 column, QString &errorMessage)
{
  Q_UNUSED(idx);
  Q_UNUSED(name);
  Q_UNUSED(channels);
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);
  return true;
}


/* ********************************************************************************************* *
 * Implementation of CSVParser
 * ********************************************************************************************* */
CSVParser::CSVParser(CSVHandler *handler, QObject *parent)
  : QObject(parent), _errorMessage(), _handler(handler)
{
  // pass...
}

const QString &
CSVParser::errorMessage() const {
  return _errorMessage;
}

bool
CSVParser::parse(QTextStream &stream) {
  if (! stream.seek(0))
    return false;

  CSVLexer lexer(stream);

  for (CSVLexer::Token token=lexer.next(); CSVLexer::Token::T_END_OF_STREAM != token.type; token = lexer.next()) {
    if (CSVLexer::Token::T_NEWLINE == token.type)
      continue;
    if ((CSVLexer::Token::T_KEYWORD == token.type) && ("id" == token.value.toLower())) {
      if (! _parse_radio_id(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("name" == token.value.toLower())) {
      if (! _parse_radio_name(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("introline1" == token.value.toLower())) {
      if (! _parse_introline1(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("introline2" == token.value.toLower())) {
      if (! _parse_introline2(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("miclevel" == token.value.toLower())) {
      if (! _parse_mic_level(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("speech" == token.value.toLower())) {
      if (! _parse_speech(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("userdb" == token.value.toLower())) {
      if (! _parse_userdb(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("contact" == token.value.toLower())) {
      if (! _parse_contacts(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("grouplist" == token.value.toLower())) {
      if (! _parse_rx_groups(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("digital" == token.value.toLower())) {
      if (! _parse_digital_channels(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("analog" == token.value.toLower())) {
      if (! _parse_analog_channels(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("zone" == token.value.toLower())) {
      if (! _parse_zones(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("gps" == token.value.toLower())) {
      if (! _parse_gps_systems(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("aprs" == token.value.toLower())) {
      if (! _parse_aprs_systems(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("scanlist" == token.value.toLower())) {
      if (! _parse_scanlists(lexer))
        return false;
    } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("roaming" == token.value.toLower())) {
      if (! _parse_roaming_zones(lexer))
        return false;
    } else if (CSVLexer::Token::T_ERROR == token.type) {
      _errorMessage = QString("Lexer error @ %1,%2 '%3': %4").arg(token.line).arg(token.column)
          .arg(token.value).arg(lexer.errorMessage());
      return false;
    } else {
      _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4'.").arg(token.line)
          .arg(token.column).arg(token.type).arg(token.value);
      return false;
    }
  }

  return true;
}

bool
CSVParser::_parse_radio_id(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  QList<qint64> ids;
  token = lexer.next();
  while (CSVLexer::Token::T_NUMBER == token.type) {
    ids.append(token.value.toInt());
    token = lexer.next();
    if (CSVLexer::Token::T_COMMA == token.type) {
      token = lexer.next();
      continue;
    }
  }

  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  if (0 == ids.size()) {
    _errorMessage = QString("Parse error @ %1,%2: At least one radio ID must be specified.")
        .arg(token.line).arg(token.column);
    return false;
  }

  return _handler->handleRadioId(ids, token.line, token.column, _errorMessage);
}

bool
CSVParser::_parse_radio_name(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  token = lexer.next();
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;
  qint64 line=token.line, column=token.column;

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleRadioName(name, line, column, _errorMessage);
}

bool
CSVParser::_parse_introline1(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  token = lexer.next();
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString text = token.value;
  qint64 line=token.line, column=token.column;

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleIntroLine1(text, line, column, _errorMessage);
}

bool
CSVParser::_parse_introline2(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  token = lexer.next();
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString text = token.value;
  qint64 line=token.line, column=token.column;

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleIntroLine2(text, line, column, _errorMessage);
}

bool
CSVParser::_parse_mic_level(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 level = token.value.toInt();
  qint64 line=token.line, column=token.column;

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleMicLevel(level, line, column, _errorMessage);
}

bool
CSVParser::_parse_speech(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_KEYWORD != token.type) ||
      (("on" != token.value.toLower()) && ("off" != token.value.toLower())))
  {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'On' or 'Off'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 line=token.line, column=token.column;
  bool speech = ("on" == token.value.toLower());

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleSpeech(speech, line, column, _errorMessage);
}

bool
CSVParser::_parse_userdb(CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  if (CSVLexer::Token::T_COLON != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected ':'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_KEYWORD != token.type) ||
      (("on" != token.value.toLower()) && ("off" != token.value.toLower())))
  {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'On' or 'Off'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 line=token.line, column=token.column;

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  logWarn() << line << "," << column << ": The 'UserDB' setting is obsolete. "
            << "It will be removed in future releases. Just delete this line.";

  // Ignore user DB setting
  return true;
}

bool
CSVParser::_parse_contacts(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_contact(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_contact(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;

  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  token = lexer.next();
  if (CSVLexer::Token::T_KEYWORD != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected keyword.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  bool dtmf = false;
  DMRContact::Type type = DMRContact::PrivateCall;
  if ("group" == token.value.toLower()) {
    type = DMRContact::GroupCall;
  } else if ("private" == token.value.toLower()) {
    type = DMRContact::PrivateCall;
  } else if ("all" == token.value.toLower()) {
    type = DMRContact::AllCall;
  } else if ("dtmf" == token.value.toLower()) {
    dtmf = true;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'Group', 'Private', 'All' or 'DTMF'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ( (!dtmf) && (CSVLexer::Token::T_NUMBER != token.type) ) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  } else if (dtmf && (CSVLexer::Token::T_NUMBER != token.type) && (CSVLexer::Token::T_STRING != token.type)) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString dtmf_num = token.value;
  if (dtmf && (! validDTMFNumber(dtmf_num))) {
    _errorMessage = QString("Parse error @ %1,%2: Invalid DTMF number '%3'.")
        .arg(token.line).arg(token.column).arg(token.value);
  }
  qint64 id = token.value.toInt();

  bool rxToneEnabled;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type)
    rxToneEnabled = false;
  else if (CSVLexer::Token::T_ENABLED == token.type)
    rxToneEnabled = true;
  else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected '+' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  if (dtmf)
    return _handler->handleDTMFContact(idx, name, dtmf_num, rxToneEnabled, line, column, _errorMessage);
  return _handler->handleDigitalContact(idx, name, type, id, rxToneEnabled, line, column, _errorMessage);
}


bool
CSVParser::_parse_rx_groups(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  while (CSVLexer::Token::T_KEYWORD==token.type)
    token = lexer.next();
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_rx_group(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);

  return false;
}

bool
CSVParser::_parse_rx_group(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  QList<qint64> lst;
  token = lexer.next();
  while (CSVLexer::Token::T_NUMBER == token.type) {
    lst.append(token.value.toInt());
    token = lexer.next();
    if (CSVLexer::Token::T_COMMA == token.type)
      token = lexer.next();
  }

  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleGroupList(idx, name, lst, line, column, _errorMessage);
}

bool
CSVParser::_parse_digital_channels(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_digital_channel(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_digital_channel(qint64 idx, CSVLexer &lexer) {
  bool ok=false;
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  double rx = token.value.toDouble(&ok);
  if (! ok) {
    _errorMessage = QString("Parse error @ %1,%2: Cannot convert '%3' to double.")
        .arg(token.line).arg(token.column).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  double tx = token.value.toDouble(&ok);
  if (! ok) {
    _errorMessage = QString("Parse error @ %1,%2: Cannot convert '%3' to double.")
        .arg(token.line).arg(token.column).arg(token.value);
    return false;
  }
  if (token.value.startsWith('+') || token.value.startsWith('-'))
    tx = rx + tx;

  token = lexer.next();
  if (CSVLexer::Token::T_KEYWORD != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected keyword.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  Channel::Power pwr;
  if ("max" == token.value.toLower()) {
    pwr = Channel::Power::Max;
  } else if ("high" == token.value.toLower()) {
    pwr = Channel::Power::High;
  } else if ("mid" == token.value.toLower()) {
    pwr = Channel::Power::Mid;
  } else if ("low" == token.value.toLower()) {
    pwr = Channel::Power::Low;
  } else if ("min" == token.value.toLower()) {
    pwr = Channel::Power::Min;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'High' or 'Low'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 scanlist;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    scanlist = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    scanlist = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NUMBER != token.type) && (CSVLexer::Token::T_NOT_SET != token.type)) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 tot =  (CSVLexer::Token::T_NOT_SET == token.type) ? 0 : token.value.toInt();

  bool rxOnly;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type)
    rxOnly = false;
  else if (CSVLexer::Token::T_ENABLED == token.type)
    rxOnly = true;
  else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected '+' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  DMRChannel::Admit admit;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    admit = DMRChannel::Admit::Always;
  } else if (CSVLexer::Token::T_KEYWORD == token.type) {
    if ("free" == token.value.toLower())
      admit = DMRChannel::Admit::Free;
    else if ("color" == token.value.toLower())
      admit = DMRChannel::Admit::ColorCode;
    else {
      _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'Free' or 'Color'.")
          .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
      return false;
    }
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'Free', 'Color' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 color = token.value.toInt();

  token = lexer.next();
  DMRChannel::TimeSlot slot;
  if (CSVLexer::Token::T_NUMBER == token.type) {
    if (1 == token.value.toInt()) {
      slot = DMRChannel::TimeSlot::TS1;
    } else if (2 == token.value.toInt()) {
      slot = DMRChannel::TimeSlot::TS2;
    } else {
      _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected '1' or '2'.")
          .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
      return false;
    }
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 rxGroupList;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    rxGroupList = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    rxGroupList = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 txContact;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    txContact = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    txContact = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 gps;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    gps = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    gps = token.value.toInt(&ok);
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 roam = -1, radioID = -1;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    roam = -1;
  } else if (CSVLexer::Token::T_ENABLED == token.type) {
    roam = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    roam = token.value.toInt(&ok);
  } else if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type)) {
    // This entry is optional for backward compatibility.
    goto done;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number, '-' or '+'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    radioID = -1;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    radioID = token.value.toInt(&ok);
  } else if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type)) {
    // This entry is optional for backward compatibility.
    goto done;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

done:
  return _handler->handleDigitalChannel(idx, name, rx, tx, pwr, scanlist, tot, rxOnly, admit, color,
                                        slot, rxGroupList, txContact, gps, roam, radioID, line, column, _errorMessage);
}

bool
CSVParser::_parse_analog_channels(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_analog_channel(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_analog_channel(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  double rx = token.value.toDouble();

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  double tx = token.value.toDouble();
  if (token.value.startsWith('+') || token.value.startsWith('-'))
    tx = rx + tx;

  token = lexer.next();
  if (CSVLexer::Token::T_KEYWORD != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected keyword.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  Channel::Power pwr;
  if ("max" == token.value.toLower()) {
    pwr = Channel::Power::Max;
  } else if ("high" == token.value.toLower()) {
    pwr = Channel::Power::High;
  } else if ("mid" == token.value.toLower()) {
    pwr = Channel::Power::Mid;
  } else if ("low" == token.value.toLower()) {
    pwr = Channel::Power::Low;
  } else if ("min" == token.value.toLower()) {
    pwr = Channel::Power::Min;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'High' or 'Low'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 scanlist;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    scanlist = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    scanlist = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NUMBER != token.type) && (CSVLexer::Token::T_NOT_SET != token.type)) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 tot =  (CSVLexer::Token::T_NOT_SET == token.type) ? 0 : token.value.toInt();

  bool rxOnly;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type)
    rxOnly = false;
  else if (CSVLexer::Token::T_ENABLED == token.type)
    rxOnly = true;
  else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected '+' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  FMChannel::Admit admit;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    admit = FMChannel::Admit::Always;
  } else if (CSVLexer::Token::T_KEYWORD == token.type) {
    if ("free" == token.value.toLower())
      admit = FMChannel::Admit::Free;
    else if ("tone" == token.value.toLower())
      admit = FMChannel::Admit::Tone;
    else {
      _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'Free', 'Tone'.")
          .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
      return false;
    }
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'Free', 'Tone' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  qint64 squelch = token.value.toInt();

  token = lexer.next();
  SelectiveCall rxTone;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    rxTone = SelectiveCall();
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    rxTone = SelectiveCall(token.value.toFloat());
  } else if (CSVLexer::Token::T_DCS_N == token.type) {
    rxTone = SelectiveCall(token.value.toUInt(), false);
  } else if (CSVLexer::Token::T_DCS_I == token.type) {
    rxTone = SelectiveCall(token.value.toUInt(), true);
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  SelectiveCall txTone;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    txTone = SelectiveCall();
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    txTone = SelectiveCall(token.value.toFloat());
  } else if (CSVLexer::Token::T_DCS_N == token.type) {
    txTone = SelectiveCall(token.value.toUInt(), false);
  } else if (CSVLexer::Token::T_DCS_I == token.type) {
    txTone = SelectiveCall(token.value.toUInt(), true);
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  FMChannel::Bandwidth bw;
  if (25 == token.value.toFloat()) {
    bw = FMChannel::Bandwidth::Wide;
  } else if (12.5 == token.value.toFloat()) {
    bw = FMChannel::Bandwidth::Narrow;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected '12.5' or '25'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  qint64 aprs = 0;
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    aprs = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    aprs = token.value.toInt();
  } else if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type)) {
    // This entry is optional for backward compatibility.
    goto done;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

done:
  return _handler->handleAnalogChannel(idx, name, rx, tx, pwr, scanlist, aprs, tot, rxOnly, admit, squelch,
                                       rxTone, txTone, bw, line, column, _errorMessage);
}

bool
CSVParser::_parse_zones(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_zone(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_zone(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  token = lexer.next();
  if ((CSVLexer::Token::T_KEYWORD != token.type) || (("a" != token.value.toLower()) && ("b" != token.value.toLower())) ) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected 'A or 'B'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  bool a = ("a" == token.value.toLower());

  QList<qint64> lst;
  token = lexer.next();
  while (CSVLexer::Token::T_NUMBER == token.type) {
    lst.append(token.value.toInt());
    token = lexer.next();
    if (CSVLexer::Token::T_COMMA == token.type)
      token = lexer.next();
  }

  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleZone(idx, name, a, lst, line, column, _errorMessage);
}


bool
CSVParser::_parse_gps_systems(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_gps_system(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_gps_system(qint64 id, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  qint64 contact;
  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER == token.type) {
    contact = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  qint64 period;
  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER == token.type) {
    period = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  qint64 chan;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    chan = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    chan = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleGPSSystem(id, name, contact, period, chan, line, column, _errorMessage);
}


bool
CSVParser::_parse_aprs_systems(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_aprs_system(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_aprs_system(qint64 id, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  qint64 channel;
  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER == token.type) {
    channel = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  qint64 period;
  token = lexer.next();
  if (CSVLexer::Token::T_NUMBER == token.type) {
    period = token.value.toInt();
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  QString src=""; unsigned srcSSID=0;
  if (CSVLexer::Token::T_APRSCALL == token.type) {
    QStringList lst = token.value.split('-');
    src = lst.first(); srcSSID = lst.last().toInt();
  } else if ((CSVLexer::Token::T_KEYWORD == token.type) && (token.value.size()<=6)) {
    src = token.value;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected APRS call.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  QString dest=""; unsigned destSSID=0;
  if (CSVLexer::Token::T_APRSCALL == token.type) {
    QStringList lst = token.value.split('-');
    dest = lst.first(); destSSID = lst.last().toInt();
  } else if ((CSVLexer::Token::T_KEYWORD == token.type) && (token.value.size()<=6)) {
    dest = token.value;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected APRS call.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  QString path="";
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    // pass..
  } else if (CSVLexer::Token::T_STRING == token.type) {
    path = token.value;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  QString iconname;
  if ((CSVLexer::Token::T_KEYWORD == token.type) || (CSVLexer::Token::T_STRING == token.type)) {
    iconname = token.value;
  } else if (CSVLexer::Token::T_NOT_SET == token.type) {
    iconname = "";
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected keyword or string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  QString message;
  if (CSVLexer::Token::T_STRING == token.type) {
    message = token.value;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleAPRSSystem(id, name, channel, period, src, srcSSID, dest, destSSID,
                                    path, iconname, message, line, column, _errorMessage);
}


bool
CSVParser::_parse_scanlists(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_scanlist(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_scanlist(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  qint64 pch1;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    pch1 = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    pch1 = token.value.toInt() + 1;
  } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("sel" == token.value.toLower())) {
    pch1 = -1;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  qint64 pch2;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    pch2 = 0;
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    pch2 = token.value.toInt() + 1;
  } else if ((CSVLexer::Token::T_KEYWORD == token.type) && ("sel" == token.value.toLower())) {
    pch2 = -1;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  qint64 txch;
  token = lexer.next();
  if (CSVLexer::Token::T_NOT_SET == token.type) {
    txch = 0;
  } else if (CSVLexer::Token::T_KEYWORD == token.type) {
    if ("sel" == token.value.toLower()) {
      txch = -1;
    } else {
      _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number, 'Sel' or '-'.")
          .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
      return false;
    }
  } else if (CSVLexer::Token::T_NUMBER == token.type) {
    txch = token.value.toInt() + 1;
  } else {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected number, 'Sel' or '-'.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  QList<qint64> lst;
  token = lexer.next();
  while ((CSVLexer::Token::T_NUMBER == token.type) || (CSVLexer::Token::T_KEYWORD == token.type)) {
    if (CSVLexer::Token::T_NUMBER == token.type) {
      lst.append(token.value.toInt());
    } else if (CSVLexer::Token::T_KEYWORD == token.type) {
      if ("sel" == token.value.toLower())
        lst.append(-1);
      else {
        _errorMessage = QString("Parse error @ %1,%2: Unexpected keyword '%3' expected number or 'Sel'.")
            .arg(token.line).arg(token.column).arg(token.value);
        return false;
      }
    }

    token = lexer.next();
    if (CSVLexer::Token::T_COMMA == token.type)
      token = lexer.next();
  }

  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleScanList(idx, name, pch1, pch2, txch, lst, line, column, _errorMessage);
}

bool
CSVParser::_parse_roaming_zones(CSVLexer &lexer) {
  // skip rest of header
  CSVLexer::Token token = lexer.next();
  for (; CSVLexer::Token::T_KEYWORD==token.type; token=lexer.next()) {
    // skip
  }
  if (CSVLexer::Token::T_NEWLINE != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  token = lexer.next();
  for (; CSVLexer::Token::T_NUMBER == token.type; token=lexer.next()) {
    qint64 idx = token.value.toInt();
    if (! _parse_roaming_zone(idx, lexer))
      return false;
  }

  if ((CSVLexer::Token::T_NEWLINE == token.type) || (CSVLexer::Token::T_END_OF_STREAM == token.type))
    return true;

  _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
      .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
  return false;
}

bool
CSVParser::_parse_roaming_zone(qint64 idx, CSVLexer &lexer) {
  CSVLexer::Token token = lexer.next();
  qint64 line=token.line, column=token.column;
  if (CSVLexer::Token::T_STRING != token.type) {
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected string.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }
  QString name = token.value;

  QList<qint64> lst;
  token = lexer.next();
  while (CSVLexer::Token::T_NUMBER == token.type) {
    lst.append(token.value.toInt());
    token = lexer.next();
    if (CSVLexer::Token::T_COMMA == token.type)
      token = lexer.next();
  }

  if ((CSVLexer::Token::T_NEWLINE != token.type) && (CSVLexer::Token::T_END_OF_STREAM != token.type)){
    _errorMessage = QString("Parse error @ %1,%2: Unexpected token %3 '%4' expected newline/EOS.")
        .arg(token.line).arg(token.column).arg(token.type).arg(token.value);
    return false;
  }

  return _handler->handleRoamingZone(idx, name, lst, line, column, _errorMessage);
}


/* ********************************************************************************************* *
 * Implementation of CSVReader
 * ********************************************************************************************* */
CSVReader::CSVReader(Config *config, QObject *parent)
  : CSVHandler(parent), _link(false), _config(config)
{
  // pass...
}


bool
CSVReader::read(Config *config, QTextStream &stream, QString &errorMessage) {
  // Seek to start-of-stream
  if (! stream.seek(0)) {
    errorMessage = "Cannot read CSV codeplug: Cannot seek within text stream. Abort import." ;
    return false;
  }

  config->clear();

  CSVReader reader(config);
  CSVParser parser(&reader);

  if (! parser.parse(stream)) {
    errorMessage = parser.errorMessage();
    errorMessage.append(tr("\nThe generic code-plug format might be changed with a new release of qdmr."
                           "\nVisit https://github.com/hmatuschek/qdmr/releases for further information."));
    return false;
  }
  reader._link = true;

  if (! parser.parse(stream)) {
    errorMessage = parser.errorMessage();
    return false;
  }

  return true;
}


bool
CSVReader::handleRadioId(const QList<qint64> &ids, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link)
    return true;
  logDebug() << "Got " << ids.count() << " IDs...";
  for (int i=0; i<ids.count(); i++) {
    DMRRadioID *id = new DMRRadioID("", ids.at(i));
    _config->radioIDs()->add(id);
    _radioIDs[i+1] = id;
  }

  return true;
}

bool
CSVReader::handleRadioName(const QString &name, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link && (!_config->settings()->defaultIdRef()->isNull())) {
    _config->settings()->defaultIdRef()->as<DMRRadioID>()->setName(name);
  }
  return true;
}

bool
CSVReader::handleIntroLine1(const QString &text, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link) {
    _config->settings()->setIntroLine1(text);
  }
  return true;
}

bool
CSVReader::handleIntroLine2(const QString &text, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link) {
    _config->settings()->setIntroLine2(text);
  }
  return true;
}

bool
CSVReader::handleMicLevel(unsigned level, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link) {
    _config->settings()->setMicLevel(level);
  }
  return true;
}


bool
CSVReader::handleSpeech(bool speech, qint64 line, qint64 column, QString &errorMessage) {
  Q_UNUSED(line);
  Q_UNUSED(column);
  Q_UNUSED(errorMessage);

  if (_link) {
    _config->settings()->enableSpeech(speech);
  }
  return true;
}


bool
CSVReader::handleDTMFContact(qint64 idx, const QString &name, const QString &num, bool rxTone,
                             qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    // pass...
    return true;
  }

  if (_digital_contacts.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create contact '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }
  DTMFContact *contact = new DTMFContact(name, num, rxTone);
  //_contacts[idx] = contact;
  _config->contacts()->add(contact);

  return true;
}


bool
CSVReader::handleDigitalContact(qint64 idx, const QString &name, DMRContact::Type type,
                                qint64 id, bool rxTone, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    // pass...
    return true;
  }

  if (_digital_contacts.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create contact '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }
  DMRContact *contact = new DMRContact(type, name, id, rxTone);
  _digital_contacts[idx] = contact;
  _config->contacts()->add(contact);

  return true;
}

bool
CSVReader::handleGroupList(qint64 idx, const QString &name, const QList<qint64> &contacts,
                           qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    foreach(qint64 i, contacts) {
      // Check contacts
      if (! _digital_contacts.contains(i)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot create contact list '%3' with index %4, unknown index.")
            .arg(line).arg(column).arg(name).arg(i);
        return false;
      }
      // link contacts
      _rxgroups[idx]->addContact(_digital_contacts[i]);
    }
    // done
    return true;
  }

  // check index
  if (_rxgroups.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create RX-group list '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }
  // Create group list
  RXGroupList *lst = new RXGroupList(name);
  _config->rxGroupLists()->add(lst);
  _rxgroups[idx] = lst;

  return true;
}

bool
CSVReader::handleDigitalChannel(qint64 idx, const QString &name, double rx, double tx, Channel::Power power, qint64 scan,
    qint64 tot, bool ro, DMRChannel::Admit admit, qint64 color, DMRChannel::TimeSlot slot,
    qint64 gl, qint64 contact, qint64 gps, qint64 roam, qint64 radioID, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    // Check RX Grouplist
    if (0 < gl) {
      if (! _rxgroups.contains(gl)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown RX-group list %4.")
            .arg(line).arg(column).arg(name).arg(gl);
        return false;
      }
      _channels[idx]->as<DMRChannel>()->setGroupListObj(_rxgroups[gl]);
    }

    // Check TX Contact
    if (0 < contact) {
      if (! _digital_contacts.contains(contact)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown contact index %4.")
            .arg(line).arg(column).arg(name).arg(contact);
        return false;
      }
      _channels[idx]->as<DMRChannel>()->setTXContactObj(_digital_contacts[contact]);
    }

    // Check scanlist
    if (0 < scan) {
      if (! _scanlists.contains(scan)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown scan-list index %4.")
            .arg(line).arg(column).arg(name).arg(scan);
        return false;
      }
      _channels[idx]->as<DMRChannel>()->setScanList(_scanlists[scan]);
    }

    // Check GPS System
    if (0 < gps) {
      if (! _posSystems.contains(gps)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown GPS system index %4.")
            .arg(line).arg(column).arg(name).arg(gps);
        return false;
      }
      _channels[idx]->as<DMRChannel>()->setAPRSObj(_posSystems[gps]);
    }

    // Check roaming zone
    if (0 == roam) {
      // index 0 mean default zone -> just set it
      _channels[idx]->as<DMRChannel>()->setRoamingZone(DefaultRoamingZone::get());
    } else if (0 < roam) {
      // positive index means reference to roaming specific roaming zone
      if (! _roamingZones.contains(roam)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown roaming zone index %4.")
            .arg(line).arg(column).arg(name).arg(roam);
        return false;
      }
      _channels[idx]->as<DMRChannel>()->setRoamingZone(_roamingZones[roam]);
    }

    // check radio ID
    if (-1 == radioID) {
      _channels[idx]->as<DMRChannel>()->setRadioIdObj(DefaultRadioID::get());
    } else if ((0 < radioID) && (_radioIDs.contains(radioID))) {
      _channels[idx]->as<DMRChannel>()->setRadioIdObj(_radioIDs[radioID]);
    } else {
      errorMessage = QString("Parse error @ %1,%2: Cannot link digital channel '%3', unknown radio ID index %4.")
          .arg(line).arg(column).arg(name).arg(radioID);
      return false;
    }

    return true;
  }

  // check index
  if (_channels.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create digital channel '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }

  DMRChannel *chan = new DMRChannel();
  chan->setName(name);
  chan->setRXFrequency(Frequency::fromMHz(rx));
  chan->setTXFrequency(Frequency::fromMHz(tx));
  chan->setPower(power);
  chan->setTimeout(tot);
  chan->setRXOnly(ro);
  chan->setAdmit(admit);
  chan->setColorCode(color);
  chan->setTimeSlot(slot);

  _config->channelList()->add(chan);
  _channels[idx] = chan;

  return true;
}


bool
CSVReader::handleAnalogChannel(qint64 idx, const QString &name, double rx, double tx, Channel::Power power, qint64 scan,
    qint64 aprs, qint64 tot, bool ro, FMChannel::Admit admit, qint64 squelch, const SelectiveCall &rxTone, const SelectiveCall &txTone,
    FMChannel::Bandwidth bw, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    // Check scanlist
    if (0 < scan) {
      if (! _scanlists.contains(scan)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link analog channel '%3', unknown scan-list index %4.")
            .arg(line).arg(column).arg(name).arg(scan);
        return false;
      }
      _channels[idx]->as<FMChannel>()->setScanList(_scanlists[scan]);
    }

    // Check APRS system
    if (0 < aprs) {
      if (! _posSystems.contains(aprs)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link analog channel '%3', unknown APRS system index %4.")
            .arg(line).arg(column).arg(name).arg(aprs);
        return false;
      }
      if (! _posSystems[aprs]->is<APRSSystem>()) {
        errorMessage = QString("Parse error @ %1,%2: Cannot link analog channel '%3', positioning system %4 ('%5') is not an APRS system!.")
            .arg(line).arg(column).arg(name).arg(aprs).arg(_posSystems[aprs]->name());
        return false;
      }
      _channels[idx]->as<FMChannel>()->setAPRSSystem(_posSystems[aprs]->as<APRSSystem>());
    }
    return true;
  }

  // check index
  if (_channels.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create analog channel '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }

  FMChannel *chan = new FMChannel();
  chan->setName(name);
  chan->setRXFrequency(Frequency::fromMHz(rx));
  chan->setTXFrequency(Frequency::fromMHz(tx));
  chan->setPower(power);
  chan->setTimeout(tot);
  chan->setRXOnly(ro);
  chan->setAdmit(admit);
  chan->setSquelch(squelch);
  chan->setRXTone(rxTone);
  chan->setTXTone(txTone);
  chan->setBandwidth(bw);

  _config->channelList()->add(chan);
  _channels[idx] = chan;

  return true;
}

bool
CSVReader::handleZone(qint64 idx, const QString &name, bool a, const QList<qint64> &channels, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    foreach(qint64 i, channels) {
      // Check channels
      if (! _channels.contains(i)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot create zone '%3', unknown channel index %4.")
            .arg(line).arg(column).arg(name).arg(i);
        return false;
      }
      // link channels
      if (a)
        _zones[idx]->A()->add(_channels[i]);
      else
        _zones[idx]->B()->add(_channels[i]);
    }
    // done
    return true;
  }

  // check index
  if (! _zones.contains(idx)) {
    Zone *zone = new Zone(name);
    _zones[idx] = zone;
    _config->zones()->add(zone);
  }

  return true;
}

bool
CSVReader::handleGPSSystem(
    qint64 idx, const QString &name, qint64 contactIdx, qint64 period, qint64 revertChannelIdx,
    qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    GPSSystem *gps = _posSystems[idx]->as<GPSSystem>();
    // Check contact ID
    if (! _digital_contacts.contains(contactIdx)) {
      errorMessage = QString("Parse error @ %1,%2: Cannot create GPS system '%3', unknown destination contact ID %4.")
          .arg(line).arg(column).arg(name).arg(contactIdx);
      logError() << errorMessage;
      return false;
    }
    gps->setContactObj(_digital_contacts[contactIdx]);

    if (revertChannelIdx) {
      if (! _channels.contains(revertChannelIdx))  {
        errorMessage = QString("Parse error @ %1,%2: Cannot create GPS system '%3', unknown revert channel ID %4.")
            .arg(line).arg(column).arg(name).arg(revertChannelIdx);
        return false;
      }
      if (! _channels[revertChannelIdx]->is<DMRChannel>()) {
        errorMessage = QString("Parse error @ %1,%2: Cannot create GPS system '%3', revert channel %4 is not a digital channel.")
            .arg(line).arg(column).arg(name).arg(revertChannelIdx);
        return false;
      }
      gps->setRevertChannel(_channels[revertChannelIdx]->as<DMRChannel>());
    }

    return true;
  }

  // check index
  if (_posSystems.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create GPS system '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }

  GPSSystem *gps = new GPSSystem(name, nullptr, nullptr, period);
  _posSystems[idx] = gps;
  _config->posSystems()->add(gps);

  return true;
}

bool
CSVReader::handleAPRSSystem(
    qint64 idx, const QString &name, qint64 channelIdx, qint64 period,
    const QString &src, unsigned srcSSID, const QString &dest, unsigned destSSID,
    const QString &path, const QString &iconname, const QString &message,
    qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    APRSSystem *aprs = _posSystems[idx]->as<APRSSystem>();
    if (! _channels.contains(channelIdx))  {
      errorMessage = QString("Parse error @ %1,%2: Cannot create APRS system '%3', unknown channel ID %4.")
          .arg(line).arg(column).arg(name).arg(channelIdx);
      return false;
    }
    if (! _channels[channelIdx]->is<FMChannel>()) {
      errorMessage = QString("Parse error @ %1,%2: Cannot create APRS system '%3', transmit channel %4 is not an analog channel.")
          .arg(line).arg(column).arg(name).arg(channelIdx);
      return false;
    }
    aprs->setRevertChannel(_channels[channelIdx]->as<FMChannel>());

    return true;
  }

  // check index
  if (_posSystems.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create GPS system '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }

  APRSSystem::Icon icon = name2aprsicon(iconname);
  APRSSystem *aprs = new APRSSystem(name, nullptr, dest, destSSID, src, srcSSID, path,
                                    icon, message, period);
  _posSystems[idx] = aprs;
  _config->posSystems()->add(aprs);

  return true;
}

bool
CSVReader::handleScanList(qint64 idx, const QString &name, qint64 pch1, qint64 pch2, qint64 txch,
                          const QList<qint64> &channels, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    // Check PriChan 1
    if ((pch1>0) && (! _channels.contains(pch1))) {
      errorMessage = QString("Parse error @ %1,%2: Cannot create scanlist '%3', unknown priority channel 1 index %4.")
          .arg(line).arg(column).arg(name).arg(pch1);
      return false;
    }
    if (pch1 < 0) {
      _scanlists[idx]->setPrimaryChannel(SelectedChannel::get());
    } else if (pch2 > 0) {
      _scanlists[idx]->setPrimaryChannel(_channels[pch1-1]);
    }

    // Check PriChan 2
    if ((pch2>0) && (! _channels.contains(pch2))) {
      errorMessage = QString("Parse error @ %1,%2: Cannot create scanlist '%3', unknown priority channel 2 index %4.")
          .arg(line).arg(column).arg(name).arg(pch2);
      return false;
    }
    if (pch2 < 0) {
      _scanlists[idx]->setSecondaryChannel(SelectedChannel::get());
    } else if (pch2 > 0){
      _scanlists[idx]->setSecondaryChannel(_channels[pch2-1]);
    }

    // Check Tx channel
    if ((txch>0) && (! _channels.contains(txch-1))) {
      errorMessage = QString("Parse error @ %1,%2: Cannot create scanlist '%3', unknown TX channel index %4.")
          .arg(line).arg(column).arg(name).arg(txch-1);
      return false;
    }
    if (txch<0) {
      _scanlists[idx]->setRevertChannel(SelectedChannel::get());
    } else if (txch>0) {
      _scanlists[idx]->setRevertChannel(_channels[txch-2]);
    }

    // Check channels
    foreach(qint64 i, channels) {
      if ((i>=0) && (!_channels.contains(i))) {
        errorMessage = QString("Parse error @ %1,%2: Cannot create scanlist '%3', unknown channel index %4.")
            .arg(line).arg(column).arg(name).arg(i);
        return false;
      }
      // link channels
      if (i<0)
        _scanlists[idx]->addChannel(SelectedChannel::get());
      else
        _scanlists[idx]->addChannel(_channels[i]);
    }
    // done
    return true;
  }

  // check index
  if (_scanlists.contains(idx)) {
    errorMessage = QString("Parse error @ %1,%2: Cannot create scan list '%3' with index %4, index already taken.")
        .arg(line).arg(column).arg(name).arg(idx);
    return false;
  }

  ScanList *lst = new ScanList(name);
  _scanlists[idx] = lst;
  _config->scanlists()->add(lst);

  return true;
}

bool
CSVReader::handleRoamingZone(qint64 idx, const QString &name, const QList<qint64> &channels, qint64 line, qint64 column, QString &errorMessage)
{
  if (_link) {
    foreach(qint64 i, channels) {
      // Check channels
      if (! _channels.contains(i)) {
        errorMessage = QString("Parse error @ %1,%2: Cannot create zone '%3', unknown channel index %4.")
            .arg(line).arg(column).arg(name).arg(i);
        return false;
      } else if (_channels[i]->is<FMChannel>()) {
        errorMessage = QString("Parse error @ %1,%2: Cannot add channel '%3' (idx %4) "
                               "to roaming zone, only digital channels can be used.")
            .arg(line).arg(column).arg(name).arg(i);
        return false;
      }
      RoamingChannel *rch = RoamingChannel::fromDMRChannel(_channels[i]->as<DMRChannel>());
      _config->roamingChannels()->add(rch);
      _roamingZones[idx]->addChannel(rch);
    }
    // done
    return true;
  }

  // check index
  if (! _roamingZones.contains(idx)) {
    RoamingZone *zone = new RoamingZone(name);
    _roamingZones[idx] = zone;
    _config->roamingZones()->add(zone);
  }

  return true;
}
