/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
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**************************************************************************/

#include "debuggerrunner.h"

#include "debuggermanager.h"

#include <projectexplorer/applicationrunconfiguration.h>
#include <projectexplorer/environment.h>
#include <projectexplorer/project.h>
#include <projectexplorer/projectexplorerconstants.h>

#include <utils/qtcassert.h>

#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFileInfo>

#include <QtGui/QTextDocument>

using namespace Debugger::Internal;

using ProjectExplorer::RunConfiguration;
using ProjectExplorer::RunControl;
using ProjectExplorer::ApplicationRunConfiguration;

// A default run configuration for external executables or attaching to
// running processes by id.
class DefaultApplicationRunConfiguration : public ProjectExplorer::ApplicationRunConfiguration
{
public:
    explicit DefaultApplicationRunConfiguration(const QString &executable = QString());

    virtual QString executable() const                 { return m_executable; }
    virtual RunMode runMode() const                    { return Gui; }
    virtual QString workingDirectory() const           { return QString(); }
    virtual QStringList commandLineArguments() const   { return QStringList(); }
    virtual ProjectExplorer::Environment environment() const
        { return ProjectExplorer::Environment(); }
    virtual QString dumperLibrary() const              { return QString(); }
    virtual QStringList dumperLibraryLocations() const { return QStringList(); }
    virtual ProjectExplorer::ToolChain::ToolChainType toolChainType() const
        { return ProjectExplorer::ToolChain::UNKNOWN; }
    virtual QWidget *configurationWidget()             { return 0; }

private:
    const QString m_executable;
};

DefaultApplicationRunConfiguration::DefaultApplicationRunConfiguration(const QString &executable) :
    ProjectExplorer::ApplicationRunConfiguration(0),
    m_executable(executable)
{
}

////////////////////////////////////////////////////////////////////////
//
// DebuggerRunner
//
////////////////////////////////////////////////////////////////////////

// A factory to create DebuggerRunControls
DebuggerRunner::DebuggerRunner(DebuggerManager *manager)
    : m_manager(manager)
{}

bool DebuggerRunner::canRun(RunConfigurationPtr runConfiguration, const QString &mode)
{
    return mode == ProjectExplorer::Constants::DEBUGMODE
       && !runConfiguration.dynamicCast<ApplicationRunConfiguration>().isNull();
}

QString DebuggerRunner::displayName() const
{
    return tr("Debug");
}

RunConfigurationPtr DebuggerRunner::createDefaultRunConfiguration(const QString &executable)
{
    return RunConfigurationPtr(new DefaultApplicationRunConfiguration(executable));
}

RunControl *DebuggerRunner::run(RunConfigurationPtr runConfiguration,
                                const QString &mode,
                                const QSharedPointer<DebuggerStartParameters> &sp,
                                DebuggerStartMode startMode)
{
    QTC_ASSERT(mode == ProjectExplorer::Constants::DEBUGMODE, return 0);
    ApplicationRunConfigurationPtr rc =
        runConfiguration.dynamicCast<ApplicationRunConfiguration>();
    QTC_ASSERT(!rc.isNull(), return 0);
    //qDebug() << "***** Debugging" << rc->name() << rc->executable();
    DebuggerRunControl *runControl = new DebuggerRunControl(m_manager, startMode, sp, rc);
    return runControl;
}

RunControl *DebuggerRunner::run(RunConfigurationPtr runConfiguration,
    const QString &mode)
{
    const QSharedPointer<DebuggerStartParameters> sp(new DebuggerStartParameters);
    return run(runConfiguration, mode, sp, StartInternal);
}

QWidget *DebuggerRunner::configurationWidget(RunConfigurationPtr runConfiguration)
{
    // NBS TODO: Add GDB-specific configuration widget
    Q_UNUSED(runConfiguration)
    return 0;
}



////////////////////////////////////////////////////////////////////////
//
// DebuggerRunControl
//
////////////////////////////////////////////////////////////////////////


DebuggerRunControl::DebuggerRunControl(DebuggerManager *manager,
                                       DebuggerStartMode mode,
                                       const QSharedPointer<DebuggerStartParameters> &startParameters,
                                       QSharedPointer<ApplicationRunConfiguration> runConfiguration) :
    RunControl(runConfiguration),
    m_mode(mode),
    m_startParameters(startParameters),
    m_manager(manager),
    m_running(false)
{
    connect(m_manager, SIGNAL(debuggingFinished()),
            this, SLOT(debuggingFinished()),
            Qt::QueuedConnection);
    connect(m_manager, SIGNAL(applicationOutputAvailable(QString)),
            this, SLOT(slotAddToOutputWindowInline(QString)),
            Qt::QueuedConnection);
    connect(m_manager, SIGNAL(inferiorPidChanged(qint64)),
            this, SLOT(bringApplicationToForeground(qint64)),
            Qt::QueuedConnection);
    connect(this, SIGNAL(stopRequested()),
            m_manager, SLOT(exitDebugger()));
}

void DebuggerRunControl::start()
{
    m_running = true;
    ApplicationRunConfigurationPtr rc =
        runConfiguration().dynamicCast<ApplicationRunConfiguration>();
    if (rc) {
        // Enhance parameters by info from the project, but do not clobber
        // arguments given in the dialogs
        if (m_startParameters->executable.isEmpty())
            m_startParameters->executable = rc->executable();
        if (m_startParameters->environment.empty())
            m_startParameters->environment = rc->environment().toStringList();
        if (m_startParameters->workingDir.isEmpty())
            m_startParameters->workingDir = rc->workingDirectory();
        if (m_mode != StartExternal)
            m_startParameters->processArgs = rc->commandLineArguments();
        switch (m_startParameters->toolChainType) {
        case ProjectExplorer::ToolChain::UNKNOWN:
        case ProjectExplorer::ToolChain::INVALID:
            m_startParameters->toolChainType = rc->toolChainType();
            break;
        default:
            break;
        }
        m_manager->setQtDumperLibraryName(rc->dumperLibrary());
        m_manager->setQtDumperLibraryLocations(rc->dumperLibraryLocations());
        if (const ProjectExplorer::Project *project = rc->project()) {
            m_startParameters->buildDir = project->buildDirectory(project->activeBuildConfiguration());
        }
        m_startParameters->useTerminal = rc->runMode() == ApplicationRunConfiguration::Console;
    }

    //emit addToOutputWindow(this, tr("Debugging %1").arg(m_executable));
    m_manager->startNewDebugger(this, m_startParameters);
    emit started();
    //debuggingFinished();
}

void DebuggerRunControl::slotAddToOutputWindowInline(const QString &data)
{
    emit addToOutputWindowInline(this, data);
}

void DebuggerRunControl::stop()
{
    //qDebug() << "DebuggerRunControl::stop";
    m_running = false;
    emit stopRequested();
}

void DebuggerRunControl::debuggingFinished()
{
    m_running = false;
    //qDebug() << "DebuggerRunControl::finished";
    //emit addToOutputWindow(this, tr("Debugging %1 finished").arg(m_executable));
    emit finished();
}

bool DebuggerRunControl::isRunning() const
{
    //qDebug() << "DebuggerRunControl::isRunning" << m_running;
    return m_running;
}