/****************************************************************************
**
** 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.
**
****************************************************************************/

#pragma once

#include "perforcesettings.h"

#include <coreplugin/editormanager/ieditorfactory.h>
#include <coreplugin/iversioncontrol.h>
#include <vcsbase/vcsbaseplugin.h>

#include <QObject>
#include <QProcess>
#include <QStringList>
#include <QSharedPointer>
#include <QHash>

QT_BEGIN_NAMESPACE
class QFile;
class QAction;
class QTextCodec;
QT_END_NAMESPACE

namespace Utils {
    class ParameterAction;
    class TempFileSaver;
}

namespace Core {
class ActionContainer;
class CommandLocator;
}

namespace Perforce {
namespace Internal {
struct PerforceDiffParameters;
class PerforceVersionControl;

struct PerforceResponse
{
    PerforceResponse();

    bool error;
    int exitCode;
    QString stdOut;
    QString stdErr;
    QString message;
};

class PerforcePlugin : public VcsBase::VcsBasePlugin
{
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtCreatorPlugin" FILE "Perforce.json")

public:
    PerforcePlugin() = default;

    bool initialize(const QStringList &arguments, QString *errorMessage) override;
    void extensionsInitialized() override;

    bool managesDirectory(const QString &directory, QString *topLevel = nullptr);
    bool managesFile(const QString &workingDirectory, const QString &fileName) const;
    bool vcsOpen(const QString &workingDir, const QString &fileName, bool silently = false);
    bool vcsAdd(const QString &workingDir, const QString &fileName);
    bool vcsDelete(const QString &workingDir, const QString &filename);
    bool vcsMove(const QString &workingDir, const QString &from, const QString &to);

    void p4Diff(const QString &workingDir, const QStringList &files);

    Core::IEditor *openPerforceSubmitEditor(const QString &fileName, const QStringList &depotFileNames);

    static const PerforceSettings& settings();
    static void setSettings(const Settings &s);

    // Map a perforce name "//xx" to its real name in the file system
    static QString fileNameFromPerforceName(const QString& perforceName,
                                            bool quiet,
                                            QString *errorMessage);

    void describe(const QString &source, const QString &n);
    void vcsAnnotate(const QString &workingDirectory, const QString &file,
                     const QString &revision, int lineNumber);

protected:
    void updateActions(VcsBase::VcsBasePlugin::ActionState) override;
    bool submitEditorAboutToClose() override;

#ifdef WITH_TESTS
private slots:
    void testLogResolving();
#endif

private:
    QString commitDisplayName() const final;
    void p4Diff(const PerforceDiffParameters &p);

    void openCurrentFile();
    void addCurrentFile();
    void revertCurrentFile();
    void printOpenedFileList();
    void diffCurrentFile();
    void diffCurrentProject();
    void updateCurrentProject();
    void revertCurrentProject();
    void revertUnchangedCurrentProject();
    void updateAll();
    void diffAllOpened();
    void startSubmitProject();
    void describeChange();
    void annotateCurrentFile();
    void annotateFile();
    void filelogCurrentFile();
    void filelogFile();
    void logProject();
    void logRepository();

    void commitFromEditor() override;
    void printPendingChanges();
    void slotSubmitDiff(const QStringList &files);
    void setTopLevel(const QString &);
    void slotTopLevelFailed(const QString &);

    class DirectoryCacheEntry
    {
    public:
        DirectoryCacheEntry(bool isManaged, const QString &topLevel):
            m_isManaged(isManaged), m_topLevel(topLevel)
        { }

        bool m_isManaged;
        QString m_topLevel;
    };

    typedef QHash<QString, DirectoryCacheEntry> ManagedDirectoryCache;

    Core::IEditor *showOutputInEditor(const QString &title, const QString &output,
                                      int editorType, const QString &source,
                                      QTextCodec *codec = nullptr);

    // Flags for runP4Cmd.
    enum RunFlags { CommandToWindow = 0x1, StdOutToWindow = 0x2,
                    StdErrToWindow = 0x4, ErrorToWindow = 0x8,
                    OverrideDiffEnvironment = 0x10,
                    // Run completely synchronously, no signals emitted
                    RunFullySynchronous = 0x20,
                    IgnoreExitCode = 0x40,
                    ShowBusyCursor = 0x80,
                    LongTimeOut = 0x100,
                    SilentStdOut = 0x200,
                   };

    // args are passed as command line arguments
    // extra args via a tempfile and the option -x "temp-filename"
    static PerforceResponse runP4Cmd(const QString &workingDir,
                                     const QStringList &args,
                                     unsigned flags = CommandToWindow|StdErrToWindow|ErrorToWindow,
                                     const QStringList &extraArgs = QStringList(),
                                     const QByteArray &stdInput = QByteArray(),
                                     QTextCodec *outputCodec = nullptr);

    static PerforceResponse synchronousProcess(const QString &workingDir,
                                               const QStringList &args,
                                               unsigned flags,
                                               const QByteArray &stdInput,
                                               QTextCodec *outputCodec);

    static PerforceResponse fullySynchronousProcess(const QString &workingDir,
                                                    const QStringList &args,
                                                    unsigned flags,
                                                    const QByteArray &stdInput,
                                                    QTextCodec *outputCodec);

    QString clientFilePath(const QString &serverFilePath);
    void annotate(const QString &workingDir, const QString &fileName,
                  const QString &changeList = QString(), int lineNumber = -1);
    void filelog(const QString &workingDir, const QString &fileName = QString(),
                 bool enableAnnotationContextMenu = false);
    void changelists(const QString &workingDir, const QString &fileName = QString());
    void cleanCommitMessageFile();
    bool isCommitEditorOpen() const;
    static QSharedPointer<Utils::TempFileSaver> createTemporaryArgumentFile(const QStringList &extraArgs,
                                                                            QString *errorString);

    static void getTopLevel(const QString &workingDirectory = QString(), bool isSync = false);
    QString pendingChangesData();

    void updateCheckout(const QString &workingDir = QString(),
                        const QStringList &dirs = QStringList());
    bool revertProject(const QString &workingDir, const QStringList &args, bool unchangedOnly);
    bool managesDirectoryFstat(const QString &directory);

    static PerforceVersionControl *perforceVersionControl();

    Core::CommandLocator *m_commandLocator = nullptr;
    Utils::ParameterAction *m_editAction = nullptr;
    Utils::ParameterAction *m_addAction = nullptr;
    Utils::ParameterAction *m_deleteAction = nullptr;
    QAction *m_openedAction = nullptr;
    Utils::ParameterAction *m_revertFileAction = nullptr;
    Utils::ParameterAction *m_diffFileAction = nullptr;
    Utils::ParameterAction *m_diffProjectAction = nullptr;
    Utils::ParameterAction *m_updateProjectAction = nullptr;
    Utils::ParameterAction *m_revertProjectAction = nullptr;
    Utils::ParameterAction *m_revertUnchangedAction = nullptr;
    QAction *m_diffAllAction = nullptr;
    Utils::ParameterAction *m_submitProjectAction = nullptr;
    QAction *m_pendingAction = nullptr;
    QAction *m_describeAction = nullptr;
    Utils::ParameterAction *m_annotateCurrentAction = nullptr;
    QAction *m_annotateAction = nullptr;
    Utils::ParameterAction *m_filelogCurrentAction = nullptr;
    QAction *m_filelogAction = nullptr;
    Utils::ParameterAction *m_logProjectAction = nullptr;
    QAction *m_logRepositoryAction = nullptr;
    QAction *m_updateAllAction = nullptr;
    bool m_submitActionTriggered = false;
    QString m_commitMessageFileName;
    mutable QString m_tempFilePattern;
    QAction *m_menuAction = nullptr;

    static PerforcePlugin *m_instance;

    PerforceSettings m_settings;
    ManagedDirectoryCache m_managedDirectoryCache;
};

} // namespace Perforce
} // namespace Internal