/**
  * Communication with A/V system - fm server
  * $Id$
  * $HeadURL$
  * $Author$
  */


#include "fm_control.h"
#include "exercise_context.h"

namespace AudioVideoManagement
{

FMControl::FMControl(const QString &fmServerHost, quint16 fmServerPort, QObject *parent)
  : AVSocket(fmServerHost, fmServerPort, getLogger("FMControl"), getLogger("FMControl.IO"), parent)
{
}

FMControl::~FMControl()
{
}


void FMControl::onReadyRead()
{
  static const QByteArray baGreeter("RCP_FM/1.0");
  while (m_avsSocket->canReadLine())
  {
    const QByteArray line = m_avsSocket->readLine().trimmed();
    if (line.isEmpty())
      continue;
    DEBUG_LOG(m_loggerIO) << "From A/V: '" << line << "'";
    if (line == baGreeter)
      onRcpLogin();
    else
    {
      const auto baList = parseLine(line);
      bool bOk;
      const Commands cmdId = static_cast<Commands>(baList.at(0).toInt(&bOk));
      if (!bOk)
      {
        ERROR_LOG(m_logger) << "Error parsing command: '" << line << "'";
        continue;
      }
      switch (cmdId)
      {
      case Commands::SyslogEvent:
        break;
      case Commands::AvEvent:
        handleSubcommandAvEvent(line, baList);
        break;
      }
    }
  }
}

void FMControl::handleSubcommandAvEvent(const QByteArray &line, const QVector<QByteArray> &baList)
{
  if (baList.size() < 2)
  {
    ERROR_LOG(m_logger) << "Got unknown command from fm server: '" << line << "'";
    return;
  }
  bool bOk;
  const Subcommands subCmdId = static_cast<Subcommands>(baList.at(1).toInt(&bOk));
  if (!bOk)
  {
    ERROR_LOG(m_logger) << "Error parsing command: '" << line << "'";
    return;
  }
  switch (subCmdId)
  {
  case Subcommands::AllFilesDeleted:
  {
    // 266 2306 1477395849 4 "ECCORSV01" "AVS_Server" "All files of directory /data/uebung_11/ECRS are deleted"
    if (baList.size() < 7)
    {
      ERROR_LOG(m_logger) << "Can not parse command from fm server: '" << line << "'";
      return;
    }
    const QByteArray &str = baList.at(6);
    const QByteArray startsWith("All files of directory ");
    if (!str.startsWith(startsWith))
      ERROR_LOG(m_logger) << "Can not parse FileDeletion command: '" << line << "'";
    const QList<QByteArray> dirParts = str.split(' ').at(4).split('/');
    if (dirParts.size() < 2)
    {
      ERROR_LOG(m_logger) << "Can not parse command from fm server: '" << line << "'";
      return;
    }
    const ExerciseContext context = ExerciseContext::fromByteArray(dirParts.at(dirParts.size() - 2));  // /foo/bar/ctx_42/ECRS
    emit fileDeletionCompleted(context);
    break;
  }
  case Subcommands::FileDeletionProgress:
    DEBUG_LOG(m_logger) << "File deletion in progress: '" << line << "'";
    break;
  }
}

} // namespace AudioVideoManagement