/**************************************************************************
**
** This file is part of Qt Creator
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** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** GNU Lesser General Public License Usage
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** 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.
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** Public License version 2.1 requirements will be met:
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** rights. These rights are described in the Nokia Qt LGPL Exception
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#ifndef VCSMANAGER_H
#define VCSMANAGER_H

#include "core_global.h"

#include <QString>
#include <QObject>

namespace Core {

class VcsManagerPrivate;
class IVersionControl;

/* VcsManager:
 * 1) Provides functionality for finding the IVersionControl * for a given
 *    filename (findVersionControlForDirectory). Note that the VcsManager assumes
 *    that if a IVersionControl * manages a directory, then it also manages
 *    all the files and all the subdirectories.
 *    It works by asking all IVersionControl * if they manage the file, and ask
 *    for the topmost directory it manages. This information is cached and
 *    VCSManager thus knows pretty fast which IVersionControl * is responsible.
 * 2) Passes on the changes from the version controls caused by updating or
 *    branching repositories and routes them to its signals (repositoryChanged,
 *    filesChanged). */

class CORE_EXPORT VcsManager : public QObject
{
    Q_OBJECT

public:
    explicit VcsManager(QObject *parent = 0);
    virtual ~VcsManager();

    void extensionsInitialized();

    void resetVersionControlForDirectory(const QString &inputDirectory);
    IVersionControl *findVersionControlForDirectory(const QString &directory,
                                                    QString *topLevelDirectory = 0);

    QStringList repositories(const IVersionControl *) const;

    IVersionControl *checkout(const QString &versionControlType,
                              const QString &directory,
                              const QByteArray &url);
    // Used only by Trac plugin.
    bool findVersionControl(const QString &versionControl);
    // Used only by Trac plugin.
    QString repositoryUrl(const QString &directory);

    // Shows a confirmation dialog, whether the file should also be deleted
    // from revision control. Calls vcsDelete on the file. Returns false
    // if a failure occurs
    bool promptToDelete(const QString &fileName);
    bool promptToDelete(IVersionControl *versionControl, const QString &fileName);

    // Shows a confirmation dialog, whether the files in the list should be
    // added to revision control. Calls vcsAdd for each file.
    void promptToAdd(const QString &directory, const QStringList &fileNames);

    // Utility messages for adding files
    static QString msgAddToVcsTitle();
    static QString msgPromptToAddToVcs(const QStringList &files, const IVersionControl *vc);
    static QString msgAddToVcsFailedTitle();
    static QString msgToAddToVcsFailed(const QStringList &files, const IVersionControl *vc);

signals:
    void repositoryChanged(const QString &repository);

private:
    VcsManagerPrivate *d;
};

} // namespace Core

#endif // VCSMANAGER_H