/* Copyright (C) 2026 The Qt Company Ltd.
 *
 * SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
*/

#ifndef REMOTEFILEENGINE_H
#define REMOTEFILEENGINE_H

#include "remoteobject.h"

#include <QtCore/private/qabstractfileengine_p.h>
#include <QtCore/private/qfsfileengine_p.h>

namespace QInstaller {

class INSTALLER_EXPORT RemoteFileEngineHandler : public QAbstractFileEngineHandler
{
    Q_DISABLE_COPY(RemoteFileEngineHandler)

public:
    RemoteFileEngineHandler() : QAbstractFileEngineHandler() {}
#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
    std::unique_ptr<QAbstractFileEngine> create(const QString &fileName) const override;
#else
    QAbstractFileEngine* create(const QString &fileName) const override;
#endif
};

class RemoteFileEngine : public RemoteObject, public QAbstractFileEngine
{
    Q_DISABLE_COPY(RemoteFileEngine)

public:
    RemoteFileEngine();
    ~RemoteFileEngine();

#if QT_VERSION < QT_VERSION_CHECK(6, 3, 0)
    bool open(QIODevice::OpenMode mode) override;
#else
    bool open(QIODevice::OpenMode mode,
              std::optional<QFile::Permissions> permissions = std::nullopt) override;
#endif
    bool close() override;
    bool flush() override;
    bool syncToDisk() override;
    qint64 size() const override;
    qint64 pos() const override;
    bool seek(qint64 offset) override;
    bool isSequential() const override;
    bool remove() override;
    bool copy(const QString &newName) override;
    bool rename(const QString &newName) override;
    bool renameOverwrite(const QString &newName) override;
    bool link(const QString &newName) override;
#if QT_VERSION < QT_VERSION_CHECK(6, 3, 0)
    bool mkdir(const QString &dirName, bool createParentDirectories) const override;
#else
    bool mkdir(const QString &dirName, bool createParentDirectories,
               std::optional<QFile::Permissions> permissions = std::nullopt) const override;
#endif
    bool rmdir(const QString &dirName, bool recurseParentDirectories) const override;
    bool setSize(qint64 size) override;
    bool caseSensitive() const override;
    bool isRelativePath() const override;
    FileFlags fileFlags(FileFlags type = FileInfoAll) const override;
    bool setPermissions(uint perms) override;
    QString fileName(FileName file = DefaultName) const override;
    uint ownerId(FileOwner owner) const override;
    QString owner(FileOwner owner) const override;
#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
    QDateTime fileTime(FileTime time) const override;
#else
    QDateTime fileTime(QFile::FileTime time) const override;
#endif
    void setFileName(const QString &fileName) override;
    int handle() const override;
    bool atEnd() const;
    uchar *map(qint64, qint64, QFile::MemoryMapFlags) { return 0; }
    bool unmap(uchar *) { return true; }
#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
    IteratorUniquePtr beginEntryList(const QString &path, QDirListing::IteratorFlags filters, const QStringList &filterNames) override;
    IteratorUniquePtr endEntryList() override;
#if QT_VERSION < QT_VERSION_CHECK(6, 11, 0)
    QStringList entryList(QDirListing::IteratorFlags filters, const QStringList &filterNames) const override;
#endif
#else
    Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames) override;
    Iterator *endEntryList() override;
#endif
#if QT_VERSION < QT_VERSION_CHECK(6, 11, 0)
    QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const override;
#endif

    qint64 read(char *data, qint64 maxlen) override;
    qint64 readLine(char *data, qint64 maxlen) override;
    qint64 write(const char *data, qint64 len) override;

    QFile::FileError error() const;
    QString errorString() const;

    bool extension(Extension extension, const ExtensionOption *option = 0,
        ExtensionReturn *output = 0) override;
    bool supportsExtension(Extension extension) const override;

private:
    QFSFileEngine m_fileEngine;
};

} // namespace QInstaller

#endif // REMOTEFILEENGINE_H
