/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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****************************************************************************/

#include "qmlprofilerruncontrol.h"

#include "qmlprofilerclientmanager.h"
#include "qmlprofilertool.h"

#include <coreplugin/icore.h>
#include <coreplugin/helpmanager.h>

#include <projectexplorer/kitinformation.h>
#include <projectexplorer/projectexplorerconstants.h>
#include <projectexplorer/projectexplorericons.h>
#include <projectexplorer/runconfiguration.h>
#include <projectexplorer/target.h>

#include <qtsupport/baseqtversion.h>
#include <qtsupport/qtkitinformation.h>
#include <qtsupport/qtsupportconstants.h>

#include <qmldebug/qmldebugcommandlinearguments.h>

#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>
#include <utils/url.h>

#include <QMessageBox>

using namespace Core;
using namespace ProjectExplorer;

namespace QmlProfiler {
namespace Internal {

static QString QmlServerUrl = "QmlServerUrl";

//
// QmlProfilerRunControlPrivate
//

class QmlProfilerRunner::QmlProfilerRunnerPrivate
{
public:
    QPointer<QmlProfilerStateManager> m_profilerState;
};

//
// QmlProfilerRunControl
//

QmlProfilerRunner::QmlProfilerRunner(RunControl *runControl)
    : RunWorker(runControl)
    , d(new QmlProfilerRunnerPrivate)
{
    setId("QmlProfilerRunner");
    runControl->setIcon(ProjectExplorer::Icons::ANALYZER_START_SMALL_TOOLBAR);
    setSupportsReRunning(false);
}

QmlProfilerRunner::~QmlProfilerRunner()
{
    delete d;
}

void QmlProfilerRunner::start()
{
    if (!d->m_profilerState)
        QmlProfilerTool::instance()->finalizeRunControl(this);
    QTC_ASSERT(d->m_profilerState, return);
    reportStarted();
}

void QmlProfilerRunner::stop()
{
    if (!d->m_profilerState) {
        reportStopped();
        return;
    }

    switch (d->m_profilerState->currentState()) {
    case QmlProfilerStateManager::AppRunning:
        d->m_profilerState->setCurrentState(QmlProfilerStateManager::AppStopRequested);
        break;
    case QmlProfilerStateManager::AppStopRequested:
        // Pressed "stop" a second time. Kill the application without collecting data
        d->m_profilerState->setCurrentState(QmlProfilerStateManager::Idle);
        reportStopped();
        break;
    case QmlProfilerStateManager::Idle:
    case QmlProfilerStateManager::AppDying:
        // valid, but no further action is needed
        break;
    default: {
        const QString message = QString::fromLatin1("Unexpected engine stop from state %1 in %2:%3")
            .arg(d->m_profilerState->currentStateAsString(), QString::fromLatin1(__FILE__), QString::number(__LINE__));
        qWarning("%s", qPrintable(message));
    }
        break;
    }
}

void QmlProfilerRunner::notifyRemoteFinished()
{
    QTC_ASSERT(d->m_profilerState, return);

    switch (d->m_profilerState->currentState()) {
    case QmlProfilerStateManager::AppRunning:
        d->m_profilerState->setCurrentState(QmlProfilerStateManager::AppDying);
        break;
    case QmlProfilerStateManager::Idle:
        break;
    default:
        const QString message = QString::fromLatin1("Process died unexpectedly from state %1 in %2:%3")
            .arg(d->m_profilerState->currentStateAsString(), QString::fromLatin1(__FILE__), QString::number(__LINE__));
        qWarning("%s", qPrintable(message));
        break;
    }
}

void QmlProfilerRunner::cancelProcess()
{
    QTC_ASSERT(d->m_profilerState, return);

    switch (d->m_profilerState->currentState()) {
    case QmlProfilerStateManager::Idle:
        break;
    case QmlProfilerStateManager::AppRunning:
        d->m_profilerState->setCurrentState(QmlProfilerStateManager::AppDying);
        break;
    default: {
        const QString message = QString::fromLatin1("Unexpected process termination requested with state %1 in %2:%3")
            .arg(d->m_profilerState->currentStateAsString(), QString::fromLatin1(__FILE__), QString::number(__LINE__));
        qWarning("%s", qPrintable(message));
        return;
    }
    }
    runControl()->initiateStop();
}

void QmlProfilerRunner::registerProfilerStateManager( QmlProfilerStateManager *profilerState )
{
    // disconnect old
    if (d->m_profilerState)
        disconnect(d->m_profilerState, &QmlProfilerStateManager::stateChanged,
                   this, &QmlProfilerRunner::profilerStateChanged);

    d->m_profilerState = profilerState;

    // connect
    if (d->m_profilerState)
        connect(d->m_profilerState, &QmlProfilerStateManager::stateChanged,
                this, &QmlProfilerRunner::profilerStateChanged);
}

void QmlProfilerRunner::profilerStateChanged()
{
    switch (d->m_profilerState->currentState()) {
    case QmlProfilerStateManager::Idle:
        reportStopped();
        break;
    default:
        break;
    }
}

void QmlProfilerRunner::setServerUrl(const QUrl &serverUrl)
{
    recordData(QmlServerUrl, serverUrl);
}

QUrl QmlProfilerRunner::serverUrl() const
{
    QVariant recordedServer = recordedData(QmlServerUrl);
    return recordedServer.toUrl();
}

//
// LocalQmlProfilerSupport
//

static QUrl localServerUrl(RunControl *runControl)
{
    QUrl serverUrl;
    Kit *kit = runControl->kit();
    const QtSupport::BaseQtVersion *version = QtSupport::QtKitAspect::qtVersion(kit);
    if (version) {
        if (version->qtVersion() >= QtSupport::QtVersionNumber(5, 6, 0))
            serverUrl = Utils::urlFromLocalSocket();
        else
            serverUrl = Utils::urlFromLocalHostAndFreePort();
    } else {
        qWarning("Running QML profiler on Kit without Qt version?");
        serverUrl = Utils::urlFromLocalHostAndFreePort();
    }
    return serverUrl;
}

LocalQmlProfilerSupport::LocalQmlProfilerSupport(RunControl *runControl)
    : LocalQmlProfilerSupport(runControl, localServerUrl(runControl))
{
}

LocalQmlProfilerSupport::LocalQmlProfilerSupport(RunControl *runControl, const QUrl &serverUrl)
    : SimpleTargetRunner(runControl)
{
    setId("LocalQmlProfilerSupport");

    auto profiler = new QmlProfilerRunner(runControl);
    profiler->setServerUrl(serverUrl);

    addStopDependency(profiler);
    // We need to open the local server before the application tries to connect.
    // In the TCP case, it doesn't hurt either to start the profiler before.
    addStartDependency(profiler);

    setStarter([this, runControl, profiler, serverUrl] {
        Runnable debuggee = runControl->runnable();

        QUrl serverUrl = profiler->serverUrl();
        QString code;
        if (serverUrl.scheme() == Utils::urlSocketScheme())
            code = QString("file:%1").arg(serverUrl.path());
        else if (serverUrl.scheme() == Utils::urlTcpScheme())
            code = QString("port:%1").arg(serverUrl.port());
        else
            QTC_CHECK(false);

        QString arguments = Utils::ProcessArgs::quoteArg(
                                QmlDebug::qmlDebugCommandLineArguments(QmlDebug::QmlProfilerServices, code, true));

        if (!debuggee.command.arguments().isEmpty())
            arguments += ' ' + debuggee.command.arguments();

        debuggee.command.setArguments(arguments);

        doStart(debuggee, {});
    });
}

} // namespace Internal
} // namespace QmlProfiler
