/*
    QMPlay2 is a video and audio player.
    Copyright (C) 2010-2020  Błażej Szczygieł

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once

#include <IOController.hpp>
#include <QMPlay2Lib.hpp>

#include <QString>
#include <QList>

class QMPLAY2SHAREDLIB_EXPORT Playlist
{
public:
    class Entry
    {
    public:
        enum Flags
        {
            Selected = 0x1,
            Skip = 0x2,
            StopAfter = 0x4,
            Locked = 0x8,
            AlwaysSync = 0x10,
        };

        Entry() = default;
        inline Entry(const QString &name, const QString &url) :
            name(name), url(url)
        {}

        QString name, url;
        double length = -1.0;
        qint32 flags = 0, queue = 0, GID = 0, parent = 0;
    };
    using Entries = QVector<Entry>;

    enum OpenMode
    {
        NoOpen,
        ReadOnly,
        WriteOnly
    };

    virtual ~Playlist() = default;

    static Entries read(const QString &url, QString *name = nullptr);
    static bool write(const Entries &list, const QString &url, QString *name = nullptr);
    static QStringList extensions();

    virtual Entries read() = 0;
    virtual bool write(const Entries &) = 0;

private:
    static Playlist *create(const QString &url, OpenMode openMode, QString *name = nullptr);

protected:
    static QString getPlaylistPath(const QString &url);

    QList<QByteArray> readLines();

    IOController<> ioCtrl;
};
