/**************************************************************************
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** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
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** 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
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#include "abstractfiletask.h"

namespace QInstaller {

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::AbstractFileTask
    \brief The AbstractFileTask class is the base class of file related tasks.

    The class is not usable as a standalone class but provides common functionality when subclassed.
*/

/*!
    \inmodule QtInstallerFramework
    \namespace TaskRole
    \brief Contains identifiers for tasks.
*/

/*!
    \enum TaskRole::TaskRole

    \value Checksum
    \value TaskItem
    \value SourceFile
    \value TargetFile
    \value Name
    \value ChecksumMismatch
    \value UserRole     The first role that can be used for user-specific purposes.
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::FileTaskItem
    \brief The FileTaskItem class represents an item in a file task object.
*/

/*!
    \fn QInstaller::FileTaskItem::FileTaskItem()

    Creates a file task item.
*/

/*!
    \fn QInstaller::FileTaskItem::FileTaskItem(const QString &s)

    Creates a file task item using the source specified by \a s.
*/

/*!
    \fn QInstaller::FileTaskItem::FileTaskItem(const QString &s, const QString &t)

    Creates a file task item using the source specified by \a s and target
    specified by \a t.
*/

/*!
    \fn QInstaller::FileTaskItem::source() const

    Returns the source file of the file task item.
*/

/*!
    \fn QInstaller::FileTaskItem::target() const

    Returns the target file of the file task item.
*/

/*!
    \inmodule QtInstallerFramework
    \class QInstaller::FileTaskResult
    \brief The FileTaskResult class represents the results of a file task.
*/

/*!
    \fn QInstaller::FileTaskResult::FileTaskResult()

    Creates file task results.
*/

/*!
    \fn QInstaller::FileTaskResult::FileTaskResult(const QString &t, const QByteArray &c,
        const FileTaskItem &i, bool checksumMismatch)

    Creates file task results using the target file specified by \a t, checksum
    specified by \a c, file task item specified by \a i, and checksum mismatch
    specified by \a checksumMismatch.
*/

/*!
    \fn QInstaller::FileTaskResult::target() const

    Returns the target file of the task result.
*/

/*!
    \fn QInstaller::FileTaskResult::checkSum() const

    Returns the checksum of the task result.
*/

/*!
    \fn QInstaller::FileTaskResult::taskItem() const

    Returns file task items.
*/

/*!
    \fn QInstaller::FileTaskResult::checksumMismatch() const

    Returns \c true if checksum mismatch is detected otherwise returns \c false.
*/

/*!
    Constructs an empty abstract file task object.
*/
AbstractFileTask::AbstractFileTask()
{
    registerMetaTypes();
}

/*!
    \fn QInstaller::AbstractFileTask::~AbstractFileTask()

    Destroys the abstract file task object.
*/

/*!
    Constructs a new abstract file task object with \a source.
*/
AbstractFileTask::AbstractFileTask(const QString &source)
{
    registerMetaTypes();
    setTaskItem(FileTaskItem(source));
}

/*!
    Constructs a new abstract file task object with \a item.
*/
AbstractFileTask::AbstractFileTask(const FileTaskItem &item)
{
    registerMetaTypes();
    setTaskItem(item);
}

/*!
    Constructs a new abstract file task object with \a source and \a target.
*/
AbstractFileTask::AbstractFileTask(const QString &source, const QString &target)
{
    registerMetaTypes();
    setTaskItem(FileTaskItem(source, target));
}

/*!
    Returns a list of file task items this task is working on.
*/
QList<FileTaskItem> AbstractFileTask::taskItems() const
{
    QReadLocker _(&m_lock);
    return m_items;
}

/*!
    Sets a file task \a item this task is working on.
*/
void AbstractFileTask::setTaskItem(const FileTaskItem &item)
{
    clearTaskItems();
    addTaskItem(item);
}


// -- protected

/*!
    \internal
*/
void AbstractFileTask::clearTaskItems()
{
    QWriteLocker _(&m_lock);
    m_items.clear();
}

/*!
    \internal
*/
void AbstractFileTask::addTaskItem(const FileTaskItem &item)
{
    QWriteLocker _(&m_lock);
    m_items.append(item);
}

/*!
    \internal
*/
void AbstractFileTask::setTaskItems(const QList<FileTaskItem> &items)
{
    clearTaskItems();
    addTaskItems(items);
}

/*!
    \internal
*/
void AbstractFileTask::addTaskItems(const QList<FileTaskItem> &items)
{
    QWriteLocker _(&m_lock);
    m_items.append(items);
}


// -- private

/*!
    \internal
*/
void AbstractFileTask::registerMetaTypes()
{
    qRegisterMetaType<QInstaller::FileTaskItem>();
    qRegisterMetaType<QInstaller::FileTaskResult>();
    qRegisterMetaType<QInstaller::TaskException>();
}

}   // namespace QInstaller