/**
 ******************************************************************************
 *
 * @file       devicewidget.cpp
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
 * @addtogroup GCSPlugins GCS Plugins
 * @{
 * @addtogroup Uploader Serial and USB Uploader Plugin
 * @{
 * @brief The USB and Serial protocol uploader plugin
 *****************************************************************************/
/*
 * 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 3 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.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include "devicewidget.h"

deviceWidget::deviceWidget(QWidget *parent) :
    QWidget(parent)
{
    myDevice = new Ui_deviceWidget();
    myDevice->setupUi(this);

    // Initialization of the Device icon display
    myDevice->verticalGroupBox_loaded->setVisible(false);
    myDevice->groupCustom->setVisible(false);
    myDevice->youdont->setVisible(false);
    myDevice->gVDevice->setScene(new QGraphicsScene(this));
    connect(myDevice->retrieveButton, SIGNAL(clicked()), this, SLOT(downloadFirmware()));
    connect(myDevice->updateButton, SIGNAL(clicked()), this, SLOT(uploadFirmware()));
    connect(myDevice->pbLoad, SIGNAL(clicked()), this, SLOT(loadFirmware()));
    connect(myDevice->youdont, SIGNAL(stateChanged(int)), this, SLOT(confirmCB(int)));
    QPixmap pix = QPixmap(QString(":uploader/images/view-refresh.svg"));
    myDevice->statusIcon->setPixmap(pix);

    myDevice->lblCertified->setText("");
}


void deviceWidget::showEvent(QShowEvent *event)
{
    Q_UNUSED(event)
    // Thit fitInView method should only be called now, once the
    // widget is shown, otherwise it cannot compute its values and
    // the result is usually a ahrsbargraph that is way too small
    myDevice->gVDevice->fitInView(devicePic.rect(),Qt::KeepAspectRatio);
}

void deviceWidget::resizeEvent(QResizeEvent* event)
{
    Q_UNUSED(event);
    myDevice->gVDevice->fitInView(devicePic.rect(), Qt::KeepAspectRatio);
}


void deviceWidget::setDeviceID(int devID){
    deviceID = devID;
}

void deviceWidget::setDfu(DFUObject *dfu)
{
    m_dfu = dfu;
}

/**
  Fills the various fields for the device
  */
void deviceWidget::populate()
{

    int id = m_dfu->devices[deviceID].ID;
    myDevice->lbldevID->setText(QString("Device ID: ") + QString::number(id, 16));
    // DeviceID tells us what sort of HW we have detected:
    // display a nice icon:
    myDevice->gVDevice->scene()->clear();
    myDevice->lblDevName->setText(deviceDescriptorStruct::idToBoardName(id));
    myDevice->lblHWRev->setText(QString(tr("HW Revision: "))+QString::number(id & 0x00FF, 16));

    switch (id) {
    case 0x0101:
        devicePic.load("");//TODO
        break;
    case 0x0201:
        devicePic.load("");//TODO
        break;
    case 0x0301:
        devicePic.load(":/uploader/images/pipx.png");
        break;
    case 0x0401:
        devicePic.load(":/uploader/images/gcs-board-cc.png");
        break;
    case 0x0402:
        devicePic.load(":/uploader/images/gcs-board-cc3d.png");
        break;
    default:
        break;
    }
    myDevice->gVDevice->scene()->addPixmap(devicePic);
    myDevice->gVDevice->setSceneRect(devicePic.rect());
    myDevice->gVDevice->fitInView(devicePic.rect(),Qt::KeepAspectRatio);

    bool r = m_dfu->devices[deviceID].Readable;
    bool w = m_dfu->devices[deviceID].Writable;

    myDevice->lblAccess->setText(QString("Flash access: ") + QString(r ? "R" : "-") + QString(w ? "W" : "-"));
    myDevice->lblMaxCode->setText(QString("Max code size: ") +QString::number(m_dfu->devices[deviceID].SizeOfCode));
    myDevice->lblCRC->setText(QString::number(m_dfu->devices[deviceID].FW_CRC));
    myDevice->lblBLVer->setText(QString("BL version: ") + QString::number(m_dfu->devices[deviceID].BL_Version));
    int size=((OP_DFU::device)m_dfu->devices[deviceID]).SizeOfDesc;
    m_dfu->enterDFU(deviceID);
    QByteArray desc = m_dfu->DownloadDescriptionAsBA(size);

    if (! populateBoardStructuredDescription(desc)) {
        //TODO
        // desc was not a structured description
        QString str = m_dfu->DownloadDescription(size);
        myDevice->lblDescription->setText(QString("Firmware custom description: ")+str.left(str.indexOf(QChar(255))));
        QPixmap pix = QPixmap(QString(":uploader/images/warning.svg"));
        myDevice->lblCertified->setPixmap(pix);
        myDevice->lblCertified->setToolTip(tr("Custom Firmware Build"));
        myDevice->lblBuildDate->setText("Warning: development firmware");
        myDevice->lblGitTag->setText("");
        myDevice->lblBrdName->setText("");
    }

    status("Ready...", STATUSICON_INFO);
}

/**
  Freezes the contents of the widget so that a user cannot
  try to modify the contents
  */
void deviceWidget::freeze()
{
    myDevice->description->setEnabled(false);
    myDevice->updateButton->setEnabled(false);
    myDevice->retrieveButton->setEnabled(false);
}

/**
  Populates the widget field with the description in case
  it is structured properly
  */
bool deviceWidget::populateBoardStructuredDescription(QByteArray desc)
{
    if(UAVObjectUtilManager::descriptionToStructure(desc,onBoardDescription))
    {
        myDevice->lblGitTag->setText(onBoardDescription.gitHash);
        myDevice->lblBuildDate->setText(onBoardDescription.gitDate.insert(4,"-").insert(7,"-"));
        if(onBoardDescription.gitTag.startsWith("RELEASE",Qt::CaseSensitive))
        {
            myDevice->lblDescription->setText(onBoardDescription.gitTag);
            QPixmap pix = QPixmap(QString(":uploader/images/application-certificate.svg"));
            myDevice->lblCertified->setPixmap(pix);
            myDevice->lblCertified->setToolTip(tr("Tagged officially released firmware build"));

        }
        else
        {
            myDevice->lblDescription->setText(onBoardDescription.gitTag);
            QPixmap pix = QPixmap(QString(":uploader/images/warning.svg"));
            myDevice->lblCertified->setPixmap(pix);
            myDevice->lblCertified->setToolTip(tr("Untagged or custom firmware build"));
        }

        myDevice->lblBrdName->setText(deviceDescriptorStruct::idToBoardName(onBoardDescription.boardType << 8 | onBoardDescription.boardRevision));

        return true;
    }

    return false;

}
bool deviceWidget::populateLoadedStructuredDescription(QByteArray desc)
{
    if(UAVObjectUtilManager::descriptionToStructure(desc,LoadedDescription))
    {
        myDevice->lblGitTagL->setText(LoadedDescription.gitHash);
        myDevice->lblBuildDateL->setText( LoadedDescription.gitDate.insert(4,"-").insert(7,"-"));
        if(LoadedDescription.gitTag.startsWith("RELEASE",Qt::CaseSensitive))
        {
            myDevice->lblDescritpionL->setText(LoadedDescription.gitTag);
            myDevice->description->setText(LoadedDescription.gitTag);
            QPixmap pix = QPixmap(QString(":uploader/images/application-certificate.svg"));
            myDevice->lblCertifiedL->setPixmap(pix);
            myDevice->lblCertifiedL->setToolTip(tr("Tagged officially released firmware build"));
        }
        else
        {
            myDevice->lblDescritpionL->setText(LoadedDescription.gitTag);
            myDevice->description->setText(LoadedDescription.gitTag);
            QPixmap pix = QPixmap(QString(":uploader/images/warning.svg"));
            myDevice->lblCertifiedL->setPixmap(pix);
            myDevice->lblCertifiedL->setToolTip(tr("Untagged or custom firmware build"));
        }
        myDevice->lblBrdNameL->setText(deviceDescriptorStruct::idToBoardName(LoadedDescription.boardType << 8 | LoadedDescription.boardRevision));

        return true;
    }

    return false;

}
/**
  Updates status message for messages coming from DFU
  */
void deviceWidget::dfuStatus(QString str)
{
    status(str, STATUSICON_RUNNING);
}

void deviceWidget::confirmCB(int value)
{
    if(value==Qt::Checked)
    {
        myDevice->updateButton->setEnabled(true);
    }
    else
        myDevice->updateButton->setEnabled(false);
}

/**
  Updates status message
  */
void deviceWidget::status(QString str, StatusIcon ic)
{
    QPixmap px;
    myDevice->statusLabel->setText(str);
    switch (ic) {
    case STATUSICON_RUNNING:
        px.load(QString(":/uploader/images/system-run.svg"));
        break;
    case STATUSICON_OK:
        px.load(QString(":/uploader/images/dialog-apply.svg"));
        break;
    case STATUSICON_FAIL:
        px.load(QString(":/uploader/images/process-stop.svg"));
        break;
    default:
        px.load(QString(":/uploader/images/gtk-info.svg"));
    }
    myDevice->statusIcon->setPixmap(px);
}


void deviceWidget::loadFirmware()
{
    myDevice->verticalGroupBox_loaded->setVisible(false);
    myDevice->groupCustom->setVisible(false);

    filename = setOpenFileName();

    if (filename.isEmpty()) {
        status("Empty filename", STATUSICON_FAIL);
        return;
    }

    QFile file(filename);
    if (!file.open(QIODevice::ReadOnly)) {
        status("Can't open file", STATUSICON_FAIL);
        return;
    }

    loadedFW = file.readAll();
    myDevice->youdont->setVisible(false);
    myDevice->youdont->setChecked(false);
    QByteArray desc = loadedFW.right(100);
    QPixmap px;
    if(loadedFW.length()>m_dfu->devices[deviceID].SizeOfCode)
        myDevice->lblCRCL->setText(tr("Can't calculate, file too big for device"));
    else
        myDevice->lblCRCL->setText( QString::number(DFUObject::CRCFromQBArray(loadedFW,m_dfu->devices[deviceID].SizeOfCode)));
    //myDevice->lblFirmwareSizeL->setText(QString("Firmware size: ")+QVariant(loadedFW.length()).toString()+ QString(" bytes"));
    if (populateLoadedStructuredDescription(desc))
    {
        myDevice->youdont->setChecked(true);
        myDevice->verticalGroupBox_loaded->setVisible(true);
        myDevice->groupCustom->setVisible(false);
        if(myDevice->lblCRC->text()==myDevice->lblCRCL->text())
        {
            myDevice->statusLabel->setText(tr("The board has the same firmware as loaded. No need to update"));
            px.load(QString(":/uploader/images/warning.svg"));
        }
        else if(myDevice->lblDevName->text()!=myDevice->lblBrdNameL->text())
        {
            myDevice->statusLabel->setText(tr("WARNING: the loaded firmware is for different hardware. Do not update!"));
            px.load(QString(":/uploader/images/error.svg"));
        }
        else if(QDateTime::fromString(onBoardDescription.gitDate)>QDateTime::fromString(LoadedDescription.gitDate))
        {
            myDevice->statusLabel->setText(tr("The board has newer firmware than loaded. Are you sure you want to update?"));
            px.load(QString(":/uploader/images/warning.svg"));
        }
        else if(!LoadedDescription.gitTag.startsWith("RELEASE",Qt::CaseSensitive))
        {
            myDevice->statusLabel->setText(tr("The loaded firmware is untagged or custom build. Update only if it was received from a trusted source (official website or your own build)"));
            px.load(QString(":/uploader/images/warning.svg"));
        }
        else
        {
            myDevice->statusLabel->setText(tr("This is the tagged officially released OpenPilot firmware"));
            px.load(QString(":/uploader/images/gtk-info.svg"));
        }
    }
    else
    {
        myDevice->statusLabel->setText(tr("WARNING: the loaded firmware was not packaged with the OpenPilot format. Do not update unless you know what you are doing"));
        px.load(QString(":/uploader/images/error.svg"));
        myDevice->youdont->setChecked(false);
        myDevice->youdont->setVisible(true);
        myDevice->verticalGroupBox_loaded->setVisible(false);
        myDevice->groupCustom->setVisible(true);
    }
    myDevice->statusIcon->setPixmap(px);
    //myDevice->updateButton->setEnabled(true);

}

/**
  Sends a firmware to the device
  */
void deviceWidget::uploadFirmware()
{
    myDevice->updateButton->setEnabled(false);
    if (!m_dfu->devices[deviceID].Writable) {
        status("Device not writable!", STATUSICON_FAIL);
        myDevice->updateButton->setEnabled(true);
        return;
    }

    bool verify = false;
    /* TODO: does not work properly on current Bootloader!
    if (m_dfu->devices[deviceID].Readable)
        verify = true;
     */

    QByteArray desc = loadedFW.right(100);
    if (desc.startsWith("OpFw")) {
        descriptionArray = desc;
        // Now do sanity checking:
        // - Check whether board type matches firmware:
        int board = m_dfu->devices[deviceID].ID;
        int firmwareBoard = ((desc.at(12)&0xff)<<8) + (desc.at(13)&0xff);
        if((board == 0x401 && firmwareBoard == 0x402) ||
           (board == 0x901 && firmwareBoard == 0x902)) {
            // These firmwares are designed to be backwards compatible
        } else if (firmwareBoard != board) {
            status("Error: firmware does not match board", STATUSICON_FAIL);
            myDevice->updateButton->setEnabled(true);
            return;
        }
        // Check the firmware embedded in the file:
        QByteArray firmwareHash = desc.mid(40,20);
        QByteArray fileHash = QCryptographicHash::hash(loadedFW.left(loadedFW.length()-100), QCryptographicHash::Sha1);
        if (firmwareHash != fileHash) {
            status("Error: firmware file corrupt", STATUSICON_FAIL);
            myDevice->updateButton->setEnabled(true);
            return;
        }
    } else {
        // The firmware is not packaged, just upload the text in the description field
        // if it is there.
        descriptionArray.clear();
    }


    status("Starting firmware upload", STATUSICON_RUNNING);
    // We don't know which device was used previously, so we
    // are cautious and reenter DFU for this deviceID:
    emit uploadStarted();
    if(!m_dfu->enterDFU(deviceID))
    {
        status("Error:Could not enter DFU mode", STATUSICON_FAIL);
        myDevice->updateButton->setEnabled(true);
        emit uploadEnded(false);
        return;
    }
    OP_DFU::Status ret=m_dfu->StatusRequest();
    qDebug() << m_dfu->StatusToString(ret);
    m_dfu->AbortOperation(); // Necessary, otherwise I get random failures.

    connect(m_dfu, SIGNAL(progressUpdated(int)), this, SLOT(setProgress(int)));
    connect(m_dfu, SIGNAL(operationProgress(QString)), this, SLOT(dfuStatus(QString)));
    connect(m_dfu, SIGNAL(uploadFinished(OP_DFU::Status)), this, SLOT(uploadFinished(OP_DFU::Status)));
    bool retstatus = m_dfu->UploadFirmware(filename,verify, deviceID);
    if(!retstatus ) {
        status("Could not start upload", STATUSICON_FAIL);
        myDevice->updateButton->setEnabled(true);
        emit uploadEnded(false);
        return;
    }
    status("Uploading, please wait...", STATUSICON_RUNNING);
}

/**
  Retrieves the firmware from the device
  */
void deviceWidget::downloadFirmware()
{
    if (!m_dfu->devices[deviceID].Readable) {
        myDevice->statusLabel->setText(QString("Device not readable!"));
        return;
    }

    myDevice->retrieveButton->setEnabled(false);
    filename = setSaveFileName();

    if (filename.isEmpty()) {
        status("Empty filename", STATUSICON_FAIL);
        return;
    }

    status("Downloading firmware from device", STATUSICON_RUNNING);
    connect(m_dfu, SIGNAL(progressUpdated(int)), this, SLOT(setProgress(int)));
    connect(m_dfu, SIGNAL(downloadFinished()), this, SLOT(downloadFinished()));
    downloadedFirmware.clear(); // Empty the byte array
    bool ret = m_dfu->DownloadFirmware(&downloadedFirmware,deviceID);
    if(!ret) {
        status("Could not start download!", STATUSICON_FAIL);
        return;
    }
    status("Download started, please wait", STATUSICON_RUNNING);
}

/**
  Callback for the firmware download result
  */
void deviceWidget::downloadFinished()
{
    disconnect(m_dfu, SIGNAL(downloadFinished()), this, SLOT(downloadFinished()));
    disconnect(m_dfu, SIGNAL(progressUpdated(int)), this, SLOT(setProgress(int)));
    status("Download successful", STATUSICON_OK);
    // Now save the result (use the utility function from OP_DFU)
    m_dfu->SaveByteArrayToFile(filename, downloadedFirmware);
    myDevice->retrieveButton->setEnabled(true);
}

/**
  Callback for the firmware upload result
  */
void deviceWidget::uploadFinished(OP_DFU::Status retstatus)
{
    myDevice->updateButton->setEnabled(true);
    disconnect(m_dfu, SIGNAL(uploadFinished(OP_DFU::Status)), this, SLOT(uploadFinished(OP_DFU::Status)));
    disconnect(m_dfu, SIGNAL(progressUpdated(int)), this, SLOT(setProgress(int)));
    disconnect(m_dfu, SIGNAL(operationProgress(QString)), this, SLOT(dfuStatus(QString)));
    if(retstatus != OP_DFU::Last_operation_Success) {
        status(QString("Upload failed with code: ") + m_dfu->StatusToString(retstatus).toLatin1().data(), STATUSICON_FAIL);
        emit uploadEnded(false);
        return;
    } else
        if (!descriptionArray.isEmpty()) {
            // We have a structured array to save
            status(QString("Updating description"), STATUSICON_RUNNING);
            repaint(); // Make sure the text above shows right away
            retstatus = m_dfu->UploadDescription(descriptionArray);
            if( retstatus != OP_DFU::Last_operation_Success) {
                status(QString("Upload failed with code: ") + m_dfu->StatusToString(retstatus).toLatin1().data(), STATUSICON_FAIL);
                emit uploadEnded(false);
                return;
            }

        } else if (!myDevice->description->text().isEmpty()) {
            // Fallback: we save the description field:
            status(QString("Updating description"), STATUSICON_RUNNING);
            repaint(); // Make sure the text above shows right away
            retstatus = m_dfu->UploadDescription(myDevice->description->text());
            if( retstatus != OP_DFU::Last_operation_Success) {
                status(QString("Upload failed with code: ") + m_dfu->StatusToString(retstatus).toLatin1().data(), STATUSICON_FAIL);
                emit uploadEnded(false);
                return;
            }
        }
    populate();
    emit uploadEnded(true);
    status("Upload successful", STATUSICON_OK);

}

/**
  Slot to update the progress bar
  */
void deviceWidget::setProgress(int percent)
{
    myDevice->progressBar->setValue(percent);
}

/**
 *Opens an open file dialog.
 */
QString deviceWidget::setOpenFileName()
{
    QFileDialog::Options options;
    QString selectedFilter;
    QString fwDirectoryStr;
    QDir fwDirectory;

    //Format filename for file chooser
#ifdef Q_OS_WIN
	fwDirectoryStr=QCoreApplication::applicationDirPath();
	fwDirectory=QDir(fwDirectoryStr);
	fwDirectory.cdUp();
	fwDirectory.cd("firmware");
	fwDirectoryStr=fwDirectory.absolutePath();
#elif defined Q_OS_LINUX
	fwDirectoryStr=QCoreApplication::applicationDirPath();
	fwDirectory=QDir(fwDirectoryStr);
    fwDirectory.cd("../../..");
    fwDirectoryStr=fwDirectory.absolutePath();
    fwDirectoryStr=fwDirectoryStr+"/fw_"+myDevice->lblBrdName->text().toLower()+"/fw_"+myDevice->lblBrdName->text().toLower()+".opfw";
#elif defined Q_OS_MAC
    fwDirectoryStr=QCoreApplication::applicationDirPath();
    fwDirectory=QDir(fwDirectoryStr);
    fwDirectory.cd("../../../../../..");
    fwDirectoryStr=fwDirectory.absolutePath();
    fwDirectoryStr=fwDirectoryStr+"/fw_"+myDevice->lblBrdName->text().toLower()+"/fw_"+myDevice->lblBrdName->text().toLower()+".opfw";
#endif
    QString fileName = QFileDialog::getOpenFileName(this,
                                                    tr("Select firmware file"),
                                                    fwDirectoryStr,
                                                    tr("Firmware Files (*.opfw *.bin)"),
                                                    &selectedFilter,
                                                    options);
    return fileName;
}

/**
 *Set the save file name
 */
QString deviceWidget::setSaveFileName()
{
    QFileDialog::Options options;
    QString selectedFilter;
    QString fileName = QFileDialog::getSaveFileName(this,
                                                    tr("Select firmware file"),
                                                    "",
                                                    tr("Firmware Files (*.bin)"),
                                                    &selectedFilter,
                                                    options);
    return fileName;
}