#include "lts_serial_port_querry.h"

#include <QtSerialPort/QSerialPortInfo>

namespace LtsSerialPortQuerry
{

LtsSerialPortQuerry::LtsSerialPortQuerry(QObject *parent)
  : QObject(parent)
  , m_currentQuerry(0)
  , m_baudRate(QSerialPort::Baud115200)
  , m_openModeFlag(QSerialPort::ReadWrite)
  , m_dataBits(QSerialPort::Data8)
  , m_flowControll(QSerialPort::NoFlowControl)
  , m_parity(QSerialPort::NoParity)
  , m_stopBits(QSerialPort::OneStop)
  , m_currentSerialPort(nullptr)
  , m_logger(getLogger("LtsSerialPortQuerry"))

{

}

void LtsSerialPortQuerry::setSerialPortSettings(const QSerialPort::BaudRate &baudRate,
                                                const QIODevice::OpenModeFlag &openModeFlag,
                                                const QSerialPort::DataBits &dataBits,
                                                const QSerialPort::FlowControl &flowControll,
                                                const QSerialPort::Parity &parity,
                                                const QSerialPort::StopBits &stopBits)
{
  m_baudRate = baudRate;
  m_openModeFlag = openModeFlag;
  m_dataBits = dataBits;
  m_flowControll = flowControll;
  m_parity = parity;
  m_stopBits = stopBits;
}

void LtsSerialPortQuerry::continueQuerry()
{
  m_currentQuerry++;
  if (m_currentQuerry>= m_serialPortInfos.size())
  {
    
    restartQuerry();
    return;
  }
  querrySerialPort(m_serialPortInfos.at(m_currentQuerry));
}

void LtsSerialPortQuerry::restartQuerry()
{
  DEBUG_LOG(m_logger) << "restart querry ";
  m_serialPortInfos = QSerialPortInfo::availablePorts();
  m_currentQuerry = 0;
  if (m_serialPortInfos.size())
    querrySerialPort(m_serialPortInfos.at(m_currentQuerry));
  else
    QTimer::singleShot(1000, this, &LtsSerialPortQuerry::restartQuerry);
}

QSerialPort *LtsSerialPortQuerry::currentSerialPort()
{
  return m_currentSerialPort;
}

void LtsSerialPortQuerry::querrySerialPort(const QSerialPortInfo &info)
{
  closeAndDeleteCurrentPort();
  m_currentSerialPort = new QSerialPort(info, this);
  m_currentSerialPort->setBaudRate(m_baudRate);
  m_currentSerialPort->setDataBits(m_dataBits);
  m_currentSerialPort->setParity(m_parity);
  m_currentSerialPort->setStopBits(m_stopBits);
  m_currentSerialPort->setFlowControl(m_flowControll);
  
  DEBUG_LOG(m_logger) << "Try opening Comport:" << m_currentSerialPort->portName() << " index is: " << m_currentQuerry;
  

  if (!m_currentSerialPort->open(QSerialPort::ReadWrite))
  {
    
    DEBUG_LOG(m_logger) << "Oppening failed query next";

    continueQuerry();
  }else
  {
    connect(m_currentSerialPort, &QSerialPort::errorOccurred,
      this, &LtsSerialPortQuerry::onSerialPortError, Qt::UniqueConnection);
    DEBUG_LOG(m_logger) << "Oppened comport" << m_currentSerialPort->portName();
    emit connectionEstablished();
  }
}

void LtsSerialPortQuerry::closeAndDeleteCurrentPort()
{
  if (m_currentSerialPort)
  {
    m_currentSerialPort->disconnect();
    if (m_currentSerialPort->isOpen())
      m_currentSerialPort->close();
    m_currentSerialPort->deleteLater();
   
    m_currentSerialPort = nullptr;
  }
}


void LtsSerialPortQuerry::onSerialPortError(QSerialPort::SerialPortError serialPortError)
{

  if (!m_currentSerialPort)
    return;
  DEBUG_LOG(m_logger) << "Spontaneous error " << serialPortError << " doesn't have to be an error ...";

  const QString errStr(QStringLiteral("QSerialPort::SerialPortError ") + QString::number(serialPortError) +
    QStringLiteral(" from serial port ") + m_currentSerialPort->portName() +
    QStringLiteral(" error: ") + m_currentSerialPort->errorString());

  switch (serialPortError)
  {
  case QSerialPort::SerialPortError::NoError:
  {
    
    break;
  }
  case QSerialPort::SerialPortError::DeviceNotFoundError:
  case QSerialPort::SerialPortError::PermissionError:
  case QSerialPort::SerialPortError::OpenError:
  case QSerialPort::SerialPortError::NotOpenError:
  case QSerialPort::SerialPortError::UnknownError:
  {
    ERROR_LOG(m_logger) << "Closing port and try to reopen it. " << m_currentSerialPort->portName();
    continueQuerry();
    
    Q_FALLTHROUGH();
  }
  case QSerialPort::SerialPortError::UnsupportedOperationError:
  {
    ERROR_LOG(m_logger) << errStr;
    break;
  }
  default:
  {
    ERROR_LOG(m_logger) << "Got an Error> " << errStr << "restarting";
    continueQuerry();
    
    break;
  }
  }

}
}