// -*- c++ -*-
/* This file is part of the KDE libraries
    Copyright 2000       Stephan Kulow <coolo@kde.org>
    Copyright 2000-2006  David Faure <faure@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef KIO_COPYJOB_H
#define KIO_COPYJOB_H

#include <QObject>
#include <QStringList>
#include <QDateTime>
#include <QUrl>

#include "kiocore_export.h"
#include <kio/global.h> // filesize_t
#include "job_base.h"

class QTimer;

namespace KIO
{

/// @internal
/// KF6 TODO: move to .cpp and remove aboutToCreate signal
struct CopyInfo {
    QUrl uSource;
    QUrl uDest;
    QString linkDest; // for symlinks only
    int permissions;
    QDateTime ctime;
    QDateTime mtime;
    KIO::filesize_t size; // 0 for dirs
};

class CopyJobPrivate;
/**
 * @class KIO::CopyJob copyjob.h <KIO/CopyJob>
 *
 * CopyJob is used to move, copy or symlink files and directories.
 * Don't create the job directly, but use KIO::copy(),
 * KIO::move(), KIO::link() and friends.
 *
 * @see KIO::copy()
 * @see KIO::copyAs()
 * @see KIO::move()
 * @see KIO::moveAs()
 * @see KIO::link()
 * @see KIO::linkAs()
 */
class KIOCORE_EXPORT CopyJob : public Job
{

    Q_OBJECT

public:
    /**
     * Defines the mode of the operation
     */
    enum CopyMode { Copy, Move, Link };

    ~CopyJob() override;

    /**
     * Returns the mode of the operation (copy, move, or link),
     * depending on whether KIO::copy(), KIO::move() or KIO::link() was called.
     */
    CopyMode operationMode() const;

    /**
     * Returns the list of source URLs.
     * @return the list of source URLs.
     */
    QList<QUrl> srcUrls() const;

    /**
     * Returns the destination URL.
     * @return the destination URL
     */
    QUrl destUrl() const;

    /**
     * By default the permissions of the copied files will be those of the source files.
     *
     * But when copying "template" files to "new" files, people prefer the umask
     * to apply, rather than the template's permissions.
     * For that case, call setDefaultPermissions(true)
     */
    void setDefaultPermissions(bool b);

    /**
     * Skip copying or moving any file when the destination already exists,
     * instead of the default behavior (interactive mode: showing a dialog to the user,
     * non-interactive mode: aborting with an error).
     * Initially added for a unit test.
     * \since 4.2
     */
    void setAutoSkip(bool autoSkip);

    /**
     * Rename files automatically when the destination already exists,
     * instead of the default behavior (interactive mode: showing a dialog to the user,
     * non-interactive mode: aborting with an error).
     * Initially added for a unit test.
     * \since 4.7
     */
    void setAutoRename(bool autoRename);

    /**
     * Reuse any directory that already exists, instead of the default behavior
     * (interactive mode: showing a dialog to the user,
     * non-interactive mode: aborting with an error).
     * \since 4.2
     */
    void setWriteIntoExistingDirectories(bool overwriteAllDirs);

    /**
     * Reimplemented for internal reasons
     */
    bool doSuspend() override;

    /**
     * Reimplemented for internal reasons
     */
    bool doResume() override;

Q_SIGNALS:

    /**
     * Emitted when the total number of files is known.
     * @param job the job that emitted this signal
     * @param files the total number of files
     */
    void totalFiles(KJob *job, unsigned long files);
    /**
     * Emitted when the toal number of direcotries is known.
     * @param job the job that emitted this signal
     * @param dirs the total number of directories
     */
    void totalDirs(KJob *job, unsigned long dirs);

    /**
     * Emitted when it is known which files / directories are going
     * to be created. Note that this may still change e.g. when
     * existing files with the same name are discovered.
     * @param job the job that emitted this signal
     * @param files a list of items that are about to be created.
     * @deprecated since 5.2 -- this signal is unused since kde 3...
     */

    QT_MOC_COMPAT void aboutToCreate(KIO::Job *job, const QList<KIO::CopyInfo> &files);

    /**
     * Sends the number of processed files.
     * @param job the job that emitted this signal
     * @param files the number of processed files
     */
    void processedFiles(KIO::Job *job, unsigned long files);
    /**
     * Sends the number of processed directories.
     * @param job the job that emitted this signal
     * @param dirs the number of processed dirs
     */
    void processedDirs(KIO::Job *job, unsigned long dirs);

    /**
     * The job is copying a file or directory.
     *
     * Note: This signal is used for progress dialogs, it's not emitted for
     * every file or directory (this would be too slow), but every 200ms.
     *
     * @param job the job that emitted this signal
     * @param src the URL of the file or directory that is currently
     *             being copied
     * @param dest the destination of the current operation
     */
    void copying(KIO::Job *job, const QUrl &src, const QUrl &dest);
    /**
     * The job is creating a symbolic link.
     *
     * Note: This signal is used for progress dialogs, it's not emitted for
     * every file or directory (this would be too slow), but every 200ms.
     *
     * @param job the job that emitted this signal
     * @param target the URL of the file or directory that is currently
     *             being linked
     * @param to the destination of the current operation
     */
    void linking(KIO::Job *job, const QString &target, const QUrl &to);
    /**
     * The job is moving a file or directory.
     *
     * Note: This signal is used for progress dialogs, it's not emitted for
     * every file or directory (this would be too slow), but every 200ms.
     *
     * @param job the job that emitted this signal
     * @param from the URL of the file or directory that is currently
     *             being moved
     * @param to the destination of the current operation
     */
    void moving(KIO::Job *job, const QUrl &from, const QUrl &to);
    /**
     * The job is creating the directory @p dir.
     *
     * This signal is emitted for every directory being created.
     *
     * @param job the job that emitted this signal
     * @param dir the directory that is currently being created
     */
    void creatingDir(KIO::Job *job, const QUrl &dir);
    /**
     * The user chose to rename @p from to @p to.
     *
     * @param job the job that emitted this signal
     * @param from the original name
     * @param to the new name
     */
    void renamed(KIO::Job *job, const QUrl &from, const QUrl &to);

    /**
     * The job emits this signal when copying or moving a file or directory successfully finished.
     * This signal is mainly for the Undo feature.
     * If you simply want to know when a copy job is done, use result().
     *
     * @param job the job that emitted this signal
     * @param from the source URL
     * @param to the destination URL
     * @param mtime the modification time of the source file, hopefully set on the destination file
     * too (when the kioslave supports it).
     * @param directory indicates whether a file or directory was successfully copied/moved.
     *                  true for a directory, false for file
     * @param renamed indicates that the destination URL was created using a
     * rename operation (i.e. fast directory moving). true if is has been renamed
     */
    void copyingDone(KIO::Job *job, const QUrl &from, const QUrl &to, const QDateTime &mtime, bool directory, bool renamed);
    /**
     * The job is copying or moving a symbolic link, that points to target.
     * The new link is created in @p to. The existing one is/was in @p from.
     * This signal is mainly for the Undo feature.
     * @param job the job that emitted this signal
     * @param from the source URL
     * @param target the target
     * @param to the destination URL
     */
    void copyingLinkDone(KIO::Job *job, const QUrl &from, const QString &target, const QUrl &to);
protected Q_SLOTS:
    void slotResult(KJob *job) override;

protected:
    CopyJob(CopyJobPrivate &dd);
    void emitResult();

private:
    Q_PRIVATE_SLOT(d_func(), void slotStart())
    Q_PRIVATE_SLOT(d_func(), void slotEntries(KIO::Job *, const KIO::UDSEntryList &list))
    Q_PRIVATE_SLOT(d_func(), void slotSubError(KIO::ListJob *, KIO::ListJob *))
    Q_PRIVATE_SLOT(d_func(), void slotProcessedSize(KJob *, qulonglong data_size))
    Q_PRIVATE_SLOT(d_func(), void slotTotalSize(KJob *, qulonglong size))
    Q_PRIVATE_SLOT(d_func(), void slotReport())
    Q_PRIVATE_SLOT(d_func(), void sourceStated(const KIO::UDSEntry &entry, const QUrl &sourceUrl))

    Q_DECLARE_PRIVATE(CopyJob)
};

/**
 * Copy a file or directory @p src into the destination @p dest,
 * which can be a file (including the final filename) or a directory
 * (into which @p src will be copied).
 *
 * This emulates the cp command completely.
 *
 * @param src the file or directory to copy
 * @param dest the destination
 * @param flags copy() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files". However if "dest" exists, then src is copied
 * into a subdir of dest, just like "cp" does. Use copyAs if you don't want that.
 *
 * @return the job handling the operation
 * @see copyAs()
 */
KIOCORE_EXPORT CopyJob *copy(const QUrl &src, const QUrl &dest, JobFlags flags = DefaultFlags);

/**
 * Copy a file or directory @p src into the destination @p dest,
 * which is the destination name in any case, even for a directory.
 *
 * As opposed to copy(), this doesn't emulate cp, but is the only
 * way to copy a directory, giving it a new name and getting an error
 * box if a directory already exists with the same name (or writing the
 * contents of @p src into @p dest, when using Overwrite).
 *
 * @param src the file or directory to copy
 * @param dest the destination
 * @param flags copyAs() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files".
 *
 * * @return the job handling the operation
 */
KIOCORE_EXPORT CopyJob *copyAs(const QUrl &src, const QUrl &dest, JobFlags flags = DefaultFlags);

/**
 * Copy a list of file/dirs @p src into a destination directory @p dest.
 *
 * @param src the list of files and/or directories
 * @param dest the destination
 * @param flags copy() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files". However if "dest" exists, then src is copied
 * into a subdir of dest, just like "cp" does.
 * @return the job handling the operation
 */
KIOCORE_EXPORT CopyJob *copy(const QList<QUrl> &src, const QUrl &dest, JobFlags flags = DefaultFlags);

/**
 * Moves a file or directory @p src to the given destination @p dest.
 *
 * @param src the file or directory to copy
 * @param dest the destination
 * @param flags move() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files". However if "dest" exists, then src is copied
 * into a subdir of dest, just like "cp" does.
 * @return the job handling the operation
 * @see copy()
 * @see moveAs()
 */
KIOCORE_EXPORT CopyJob *move(const QUrl &src, const QUrl &dest, JobFlags flags = DefaultFlags);
/**
 * Moves a file or directory @p src to the given destination @p dest. Unlike move()
 * this operation will not move @p src into @p dest when @p dest exists: it will
 * either fail, or move the contents of @p src into it if Overwrite is set.
 *
 * @param src the file or directory to copy
 * @param dest the destination
 * @param flags moveAs() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files".
 * @return the job handling the operation
 * @see copyAs()
 */
KIOCORE_EXPORT CopyJob *moveAs(const QUrl &src, const QUrl &dest, JobFlags flags = DefaultFlags);
/**
 * Moves a list of files or directories @p src to the given destination @p dest.
 *
 * @param src the list of files or directories to copy
 * @param dest the destination
 * @param flags move() supports HideProgressInfo and Overwrite.
 * Note: Overwrite has the meaning of both "write into existing directories" and
 * "overwrite existing files". However if "dest" exists, then src is copied
 * into a subdir of dest, just like "cp" does.
 * @return the job handling the operation
 * @see copy()
 */
KIOCORE_EXPORT CopyJob *move(const QList<QUrl> &src, const QUrl &dest, JobFlags flags = DefaultFlags);

/**
 * Create a link.
 * If the protocols and hosts are the same, a Unix symlink will be created.
 * Otherwise, a .desktop file of Type Link and pointing to the src URL will be created.
 *
 * @param src The existing file or directory, 'target' of the link.
 * @param destDir Destination directory where the link will be created.
 * @param flags link() supports HideProgressInfo only
 * @return the job handling the operation
 */
KIOCORE_EXPORT CopyJob *link(const QUrl &src, const QUrl &destDir, JobFlags flags = DefaultFlags);

/**
 * Create several links
 * If the protocols and hosts are the same, a Unix symlink will be created.
 * Otherwise, a .desktop file of Type Link and pointing to the src URL will be created.
 *
 * @param src The existing files or directories, 'targets' of the link.
 * @param destDir Destination directory where the links will be created.
 * @param flags link() supports HideProgressInfo only
 * @return the job handling the operation
 * @see link()
 */
KIOCORE_EXPORT CopyJob *link(const QList<QUrl> &src, const QUrl &destDir, JobFlags flags = DefaultFlags);

/**
 * Create a link. Unlike link() this operation will fail when @p dest is an existing
 * directory rather than the final name for the link.
 * If the protocols and hosts are the same, a Unix symlink will be created.
 * Otherwise, a .desktop file of Type Link and pointing to the src URL will be created.
 *
 * @param src The existing file or directory, 'target' of the link.
 * @param dest Destination (i.e. the final symlink)
 * @param flags linkAs() supports HideProgressInfo only
 * @return the job handling the operation
 * @see link ()
 * @see copyAs()
 */
KIOCORE_EXPORT CopyJob *linkAs(const QUrl &src, const QUrl &dest, JobFlags flags = DefaultFlags);

/**
 * Trash a file or directory.
 * This is currently only supported for local files and directories.
 * Use QUrl::fromLocalFile to create a URL from a local file path.
 *
 * @param src file to delete
 * @param flags trash() supports HideProgressInfo only
 * @return the job handling the operation
 */
KIOCORE_EXPORT CopyJob *trash(const QUrl &src, JobFlags flags = DefaultFlags);

/**
 * Trash a list of files or directories.
 * This is currently only supported for local files and directories.
 *
 * @param src the files to delete
 * @param flags trash() supports HideProgressInfo only
 * @return the job handling the operation
 */
KIOCORE_EXPORT CopyJob *trash(const QList<QUrl> &src, JobFlags flags = DefaultFlags);

}

#endif
