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#include "maemoconfigtestdialog.h"
#include "ui_maemoconfigtestdialog.h"

#include "maemodeviceconfigurations.h"

#include <coreplugin/ssh/sshconnection.h>
#include <coreplugin/ssh/sshremoteprocess.h>

#include <QtGui/QPushButton>

using namespace Core;

namespace Qt4ProjectManager {
namespace Internal {

MaemoConfigTestDialog::MaemoConfigTestDialog(const MaemoDeviceConfig &config, QWidget *parent)
    : QDialog(parent)
    , m_ui(new Ui_MaemoConfigTestDialog)
    , m_config(config)
{
    setAttribute(Qt::WA_DeleteOnClose);

    m_ui->setupUi(this);
    m_closeButton = m_ui->buttonBox->button(QDialogButtonBox::Close);

    connect(m_closeButton, SIGNAL(clicked()), SLOT(stopConfigTest()));

    startConfigTest();
}

MaemoConfigTestDialog::~MaemoConfigTestDialog()
{
    stopConfigTest();
}

void MaemoConfigTestDialog::startConfigTest()
{
    if (m_testProcess)
        return;

    m_ui->testResultEdit->setPlainText(tr("Testing configuration..."));
    m_closeButton->setText(tr("Stop Test"));
    m_connection = SshConnection::create();
    connect(m_connection.data(), SIGNAL(connected()), this,
        SLOT(handleConnected()));
    connect(m_connection.data(), SIGNAL(error(SshError)), this,
        SLOT(handleConnectionError()));
    m_connection->connectToHost(m_config.server);
}

void MaemoConfigTestDialog::handleConnected()
{
    if (!m_connection)
        return;
    QLatin1String sysInfoCmd("uname -rsm");
    QLatin1String qtInfoCmd("dpkg -l |grep libqt "
        "|sed 's/[[:space:]][[:space:]]*/ /g' "
        "|cut -d ' ' -f 2,3 |sed 's/~.*//g'");
    QString command(sysInfoCmd + " && " + qtInfoCmd);
    m_testProcess = m_connection->createRemoteProcess(command.toUtf8());
    connect(m_testProcess.data(), SIGNAL(closed(int)), this,
        SLOT(handleProcessFinished(int)));
    connect(m_testProcess.data(), SIGNAL(outputAvailable(QByteArray)), this,
        SLOT(processSshOutput(QByteArray)));
    m_testProcess->start();
}

void MaemoConfigTestDialog::handleConnectionError()
{
    if (!m_connection)
        return;
    QString output = tr("Could not connect to host: %1")
        .arg(m_connection->errorString());
    if (m_config.type == MaemoDeviceConfig::Simulator)
        output += tr("\nDid you start Qemu?");
    m_ui->testResultEdit->setPlainText(output);
    stopConfigTest();
}

void MaemoConfigTestDialog::handleProcessFinished(int exitStatus)
{
    Q_ASSERT(exitStatus == SshRemoteProcess::FailedToStart
        || exitStatus == SshRemoteProcess::KilledBySignal
        || exitStatus == SshRemoteProcess::ExitedNormally);

    if (!m_testProcess)
        return;

    if (exitStatus != SshRemoteProcess::ExitedNormally
        || m_testProcess->exitCode() != 0) {
        m_ui->testResultEdit->setPlainText(tr("Remote process failed: %1")
            .arg(m_testProcess->errorString()));
    } else {
        const QString &output = parseTestOutput();
        if (!m_qtVersionOk) {
            m_ui->errorLabel->setText(tr("Qt version mismatch! "
                " Expected Qt on device: 4.6.2 or later."));
        }
        m_ui->testResultEdit->setPlainText(output);
    }
    stopConfigTest();
}

void MaemoConfigTestDialog::stopConfigTest()
{
    if (m_testProcess)
        disconnect(m_testProcess.data(), 0, this, 0);
    if (m_connection)
        disconnect(m_connection.data(), 0, this, 0);

    m_deviceTestOutput.clear();
    m_closeButton->setText(tr("Close"));
}

void MaemoConfigTestDialog::processSshOutput(const QByteArray &output)
{
    m_deviceTestOutput.append(QString::fromUtf8(output));
}

QString MaemoConfigTestDialog::parseTestOutput()
{
    m_qtVersionOk = false;

    QString output;
    const QRegExp unamePattern(QLatin1String("Linux (\\S+)\\s(\\S+)"));
    int index = unamePattern.indexIn(m_deviceTestOutput);
    if (index == -1) {
        output = tr("Device configuration test failed: Unexpected output:\n%1")
            .arg(m_deviceTestOutput);
        return output;
    }

    output = tr("Hardware architecture: %1\n").arg(unamePattern.cap(2));
    output.append(tr("Kernel version: %1\n").arg(unamePattern.cap(1)));
    output.prepend(tr("Device configuration successful.\n"));
    const QRegExp dkpgPattern(QLatin1String("libqt\\S+ (\\d)\\.(\\d)\\.(\\d)"));
    index = dkpgPattern.indexIn(m_deviceTestOutput);
    if (index == -1) {
        output.append(tr("No Qt packages installed."));
        return output;
    }

    output.append(tr("List of installed Qt packages:") + QLatin1Char('\n'));
    do {
        output.append(QLatin1Char('\t') + dkpgPattern.cap(0)
            + QLatin1Char('\n'));
        index = dkpgPattern.indexIn(m_deviceTestOutput, index + 1);
        if (!m_qtVersionOk && QT_VERSION_CHECK(dkpgPattern.cap(1).toInt(),
            dkpgPattern.cap(2).toInt(), dkpgPattern.cap(3).toInt()) >= 0x040602) {
            m_qtVersionOk = true;
        }
    } while (index != -1);
    return output;
}

} // namespace Internal
} // namespace Qt4ProjectManager