/*
    SPDX-FileCopyrightText: 2017-2020 Andrius Štikonas <andrius@stikonas.eu>

    SPDX-License-Identifier: GPL-3.0-or-later
*/

#ifndef KPMCORE_FSTAB_H
#define KPMCORE_FSTAB_H

#include "util/libpartitionmanagerexport.h"

#include <memory>

#include <QList>
#include <QString>

struct FstabEntryPrivate;

/** Base class for fstab handling.

    FstabEntry stores a single line of /etc/fstab file which can be a comment

    @author Andrius Štikonas <andrius@stikonas.eu>
*/

class LIBKPMCORE_EXPORT FstabEntry
{
public:
    enum class Type { deviceNode, uuid, label, partlabel, partuuid, comment };

    FstabEntry(const QString& fsSpec, const QString& mountPoint, const QString& type, const QString& options, int dumpFreq = 0, int passNumber = 0, const QString& comment = QString());

    /**
      * @return the fs_spec field of fstab entry
      */
    const QString& fsSpec() const;

    /**
      * @return the device node corresponding to fs_spec entry
      */
    const QString& deviceNode() const;

    /**
      * @return the mount point (target) for the file system
      */
    const QString& mountPoint() const;

    /**
      * @return the type of the file system
      */
    const QString& type() const;

    /**
      * @return the mount options associated with the file system
      */
    const QStringList& options() const;

    /**
      * @return the mount options associated with the file system
      */
    const QString optionsString() const;

    /**
      * @return the fs_freq field of fstab entry
      */
    int dumpFreq() const;

    /**
      * @return the fs_passno field of fstab entry
      */
    int passNumber() const;

    /**
      * @return commented part of the line in fstab file
      */
    const QString& comment() const;

    /**
      * @return the type of fstab entry, e.g. device node or UUID or comment only
      */
    Type entryType() const;

    /**
      * @param s the new value for the fs_spec field of fstab entry
      */
    void setFsSpec(const QString& s);

    /**
      * @param s the new value for the mount point
      */
    void setMountPoint(const QString& s);

    /**
      * @param s the new list with the mount options
      */
    void setOptions(const QStringList& s);

    /**
      * @param s the new value for the dump frequency
      */
    void setDumpFreq(int s);

    /**
      * @param s the new value for the pass number
      */
    void setPassNumber(int s);

private:
    std::shared_ptr<FstabEntryPrivate> d;
};

typedef QList<FstabEntry> FstabEntryList;

QString escapeSpaces(const QString& mountPoint);
QString unescapeSpaces(const QString& mountPoint);

LIBKPMCORE_EXPORT FstabEntryList readFstabEntries(const QString& fstabPath = QStringLiteral("/etc/fstab"));
LIBKPMCORE_EXPORT QStringList possibleMountPoints(const QString& deviceNode, const QString& fstabPath = QStringLiteral("/etc/fstab"));
LIBKPMCORE_EXPORT bool writeMountpoints(const FstabEntryList& fstabEntries, const QString& filename = QStringLiteral("/etc/fstab"));

#endif