/***************************************************************************
*   Copyright (C) 2009 Matthias Fuchs <mat69@gmx.net>                     *
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 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 General Public License for more details.                          *
*                                                                         *
*   You should have received a copy of the GNU General Public License     *
*   along with this program; if not, write to the                         *
*   Free Software Foundation, Inc.,                                       *
*   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
***************************************************************************/

#ifndef FILEHANDLER
#define FILEHANDLER

#include <QMutex>
#include <QThread>

#include "metalinker.h"

struct FileData
{
    QUrl url;
    KGetMetalink::File file;
};

/**
 * Calculates the checksum and partial checksums for files and adds KGetMetalink::Resources and
 * KGetMetalink::CommonData to the resulting KGetMetalink::File
 */
class FileHandlerThread : public QThread
{
    Q_OBJECT

    public:
        FileHandlerThread(QObject *parent = nullptr);
        ~FileHandlerThread();

        void setData(const QList<FileData> &files, const QStringList &types, bool createPartial, const KGetMetalink::Resources &tempResources, const KGetMetalink::CommonData &tempCommonData);

    signals:
        void fileResult(const KGetMetalink::File file);

    protected:
        void run();

    private:
        QMutex mutex;
        bool abort;
        QList<QList<FileData> > m_files;
        QList<QStringList> m_types;
        QList<bool> m_createPartial;
        QList<KGetMetalink::Resources> m_tempResources;
        QList<KGetMetalink::CommonData> m_tempCommonDatas;
};

/**
 * Gets the name and the size of the files of a list of urls, also enters
 * directories recursively if needed
 */
class DirectoryHandler : public QObject
{
    Q_OBJECT

    public:
        DirectoryHandler(QObject *parent);
        ~DirectoryHandler();

        /**
         * Returns the handled files and clears the member, call this after finished is emitted
         */
        QList<FileData> takeFiles();

    public slots:
        /**
         * The files the FileHandler should handle, the urls can also be urls to directories
         * then the files of these directories will be got recursively
         */
        void slotFiles(const QList<QUrl> &files);

    signals:
        void finished();

     private slots:
        void slotDirEntries(KIO::Job *job, const KIO::UDSEntryList &entries);

        /**
         * Finished one of the jobs to get all files of a directory recursively
         */
        void slotFinished(KJob *job);

    private:
        /**
         * Checks if all urls have been parsed already and emits finished in that case
         */
        void evaluateFileProcess();

    private:
        bool m_allJobsStarted;
        QHash<KJob*, QUrl> m_jobs;
        QList<FileData> m_files;
};

#endif
