Provide torrent creation feature via WebAPI

PR #20366. Closes #5614. Co-authored-by: Radu Carpa <radu.carpa@cern.ch>
2024-11-27 11:40:33 +00:00 · 2024-02-27 15:57:16 +03:00 · 2024-02-27 15:57:16 +03:00 · 0114610a40
commit 0114610a40
parent 15697f904d
17 changed files with 887 additions and 83 deletions
--- a/src/base/CMakeLists.txt
+++ b/src/base/CMakeLists.txt
@ -37,6 +37,8 @@ add_library(qbt_base STATIC
    bittorrent/torrent.h
    bittorrent/torrentcontenthandler.h
    bittorrent/torrentcontentlayout.h
+    bittorrent/torrentcreationmanager.h
+    bittorrent/torrentcreationtask.h
    bittorrent/torrentcreator.h
    bittorrent/torrentdescriptor.h
    bittorrent/torrentimpl.h
@ -140,6 +142,8 @@ add_library(qbt_base STATIC
    bittorrent/sslparameters.cpp
    bittorrent/torrent.cpp
    bittorrent/torrentcontenthandler.cpp
+    bittorrent/torrentcreationmanager.cpp
+    bittorrent/torrentcreationtask.cpp
    bittorrent/torrentcreator.cpp
    bittorrent/torrentdescriptor.cpp
    bittorrent/torrentimpl.cpp
--- a/src/base/bittorrent/torrentcreationmanager.cpp
+++ b/src/base/bittorrent/torrentcreationmanager.cpp
@ -0,0 +1,134 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "torrentcreationmanager.h"
+
+#include <utility>
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/composite_key.hpp>
+#include <boost/multi_index/indexed_by.hpp>
+#include <boost/multi_index/mem_fun.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+
+#include <QUuid>
+
+#define SETTINGS_KEY(name) u"TorrentCreator/Manager/" name
+
+namespace BitTorrent
+{
+    using namespace boost::multi_index;
+
+    class TorrentCreationManager::TaskSet final : public boost::multi_index_container<
+            std::shared_ptr<TorrentCreationTask>,
+            indexed_by<
+                    ordered_unique<tag<struct ByID>, const_mem_fun<TorrentCreationTask, QString, &TorrentCreationTask::id>>,
+                    ordered_non_unique<tag<struct ByCompletion>, composite_key<
+                            TorrentCreationTask,
+                            const_mem_fun<TorrentCreationTask, bool, &TorrentCreationTask::isFinished>,
+                            const_mem_fun<TorrentCreationTask, QDateTime, &TorrentCreationTask::timeAdded>>>>>
+    {
+    };
+}
+
+BitTorrent::TorrentCreationManager::TorrentCreationManager(IApplication *app, QObject *parent)
+    : ApplicationComponent(app, parent)
+    , m_maxTasks {SETTINGS_KEY(u"MaxTasks"_s), 256}
+    , m_numThreads {SETTINGS_KEY(u"NumThreads"_s), 1}
+    , m_tasks {std::make_unique<TaskSet>()}
+{
+    if (m_numThreads > 0)
+        m_threadPool.setMaxThreadCount(m_numThreads);
+}
+
+BitTorrent::TorrentCreationManager::~TorrentCreationManager() = default;
+
+std::shared_ptr<BitTorrent::TorrentCreationTask> BitTorrent::TorrentCreationManager::createTask(const TorrentCreatorParams &params, bool startSeeding)
+{
+    if (std::cmp_greater_equal(m_tasks->size(), m_maxTasks.get()))
+    {
+        // Try to delete old finished tasks to stay under target
+        auto &tasksByCompletion = m_tasks->get<ByCompletion>();
+        auto [iter, endIter] = tasksByCompletion.equal_range(std::make_tuple(true));
+        while ((iter != endIter) && std::cmp_greater_equal(m_tasks->size(), m_maxTasks.get()))
+        {
+            iter = tasksByCompletion.erase(iter);
+        }
+    }
+    if (std::cmp_greater_equal(m_tasks->size(), m_maxTasks.get()))
+        return {};
+
+    const QString taskID = generateTaskID();
+
+    auto *torrentCreator = new TorrentCreator(params, this);
+    auto creationTask = std::make_shared<TorrentCreationTask>(app(), taskID, torrentCreator, startSeeding);
+    connect(creationTask.get(), &QObject::destroyed, torrentCreator, &BitTorrent::TorrentCreator::requestInterruption);
+
+    m_tasks->get<ByID>().insert(creationTask);
+    m_threadPool.start(torrentCreator);
+
+    return creationTask;
+}
+
+QString BitTorrent::TorrentCreationManager::generateTaskID() const
+{
+    const auto &tasksByID = m_tasks->get<ByID>();
+    QString taskID = QUuid::createUuid().toString(QUuid::WithoutBraces);
+    while (tasksByID.find(taskID) != tasksByID.end())
+        taskID = QUuid::createUuid().toString(QUuid::WithoutBraces);
+
+    return taskID;
+}
+
+std::shared_ptr<BitTorrent::TorrentCreationTask> BitTorrent::TorrentCreationManager::getTask(const QString &id) const
+{
+    const auto &tasksByID = m_tasks->get<ByID>();
+    const auto iter = tasksByID.find(id);
+    if (iter == tasksByID.end())
+        return nullptr;
+
+    return *iter;
+}
+
+QList<std::shared_ptr<BitTorrent::TorrentCreationTask>> BitTorrent::TorrentCreationManager::tasks() const
+{
+    const auto &tasksByCompletion = m_tasks->get<ByCompletion>();
+    return {tasksByCompletion.cbegin(), tasksByCompletion.cend()};
+}
+
+bool BitTorrent::TorrentCreationManager::deleteTask(const QString &id)
+{
+    auto &tasksByID = m_tasks->get<ByID>();
+    const auto iter = tasksByID.find(id);
+    if (iter == tasksByID.end())
+        return false;
+
+    tasksByID.erase(iter);
+    return true;
+}
--- a/src/base/bittorrent/torrentcreationmanager.h
+++ b/src/base/bittorrent/torrentcreationmanager.h
@ -0,0 +1,70 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <QtContainerFwd>
+#include <QObject>
+#include <QThreadPool>
+
+#include "base/applicationcomponent.h"
+#include "base/settingvalue.h"
+#include "torrentcreationtask.h"
+#include "torrentcreator.h"
+
+namespace BitTorrent
+{
+    class TorrentCreationManager final : public ApplicationComponent<QObject>
+    {
+        Q_OBJECT
+        Q_DISABLE_COPY_MOVE(TorrentCreationManager)
+
+    public:
+        explicit TorrentCreationManager(IApplication *app, QObject *parent = nullptr);
+        ~TorrentCreationManager() override;
+
+        std::shared_ptr<TorrentCreationTask> createTask(const TorrentCreatorParams &params, bool startSeeding = true);
+        std::shared_ptr<TorrentCreationTask> getTask(const QString &id) const;
+        QList<std::shared_ptr<TorrentCreationTask>> tasks() const;
+        bool deleteTask(const QString &id);
+
+    private:
+        QString generateTaskID() const;
+
+        CachedSettingValue<qint32> m_maxTasks;
+        CachedSettingValue<qint32> m_numThreads;
+
+        class TaskSet;
+        std::unique_ptr<TaskSet> m_tasks;
+
+        QThreadPool m_threadPool;
+    };
+}
--- a/src/base/bittorrent/torrentcreationtask.cpp
+++ b/src/base/bittorrent/torrentcreationtask.cpp
@ -0,0 +1,149 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "torrentcreationtask.h"
+
+#include "base/addtorrentmanager.h"
+#include "base/interfaces/iapplication.h"
+#include "base/bittorrent/addtorrentparams.h"
+
+BitTorrent::TorrentCreationTask::TorrentCreationTask(IApplication *app, const QString &id
+        , TorrentCreator *torrentCreator, bool startSeeding, QObject *parent)
+    : ApplicationComponent(app, parent)
+    , m_id {id}
+    , m_params {torrentCreator->params()}
+    , m_timeAdded {QDateTime::currentDateTime()}
+{
+    Q_ASSERT(torrentCreator);
+
+    connect(torrentCreator, &BitTorrent::TorrentCreator::started, this, [this]
+    {
+        m_timeStarted = QDateTime::currentDateTime();
+    });
+
+    connect(torrentCreator, &BitTorrent::TorrentCreator::progressUpdated, this
+            , [this](const int progress)
+    {
+        m_progress = progress;
+    });
+
+    connect(torrentCreator, &BitTorrent::TorrentCreator::creationSuccess, this
+            , [this, app, startSeeding](const TorrentCreatorResult &result)
+    {
+        m_timeFinished = QDateTime::currentDateTime();
+        m_result = result;
+
+        if (!startSeeding)
+            return;
+
+        BitTorrent::AddTorrentParams params;
+        params.savePath = result.savePath;
+        params.skipChecking = true;
+        params.useAutoTMM = false;  // otherwise if it is on by default, it will overwrite `savePath` to the default save path
+
+        if (!app->addTorrentManager()->addTorrent(result.torrentFilePath.data(), params))
+            m_errorMsg = tr("Failed to start seeding.");
+    });
+
+    connect(torrentCreator, &BitTorrent::TorrentCreator::creationFailure, this
+            , [this](const QString &errorMsg)
+    {
+        m_timeFinished = QDateTime::currentDateTime();
+        m_errorMsg = errorMsg;
+    });
+}
+
+QString BitTorrent::TorrentCreationTask::id() const
+{
+    return m_id;
+}
+
+const BitTorrent::TorrentCreatorParams &BitTorrent::TorrentCreationTask::params() const
+{
+    return m_params;
+}
+
+BitTorrent::TorrentCreationTask::State BitTorrent::TorrentCreationTask::state() const
+{
+    if (m_timeStarted.isNull())
+        return Queued;
+    if (m_timeFinished.isNull())
+        return Running;
+    return Finished;
+}
+
+bool BitTorrent::TorrentCreationTask::isQueued() const
+{
+    return (state() == Queued);
+}
+
+bool BitTorrent::TorrentCreationTask::isRunning() const
+{
+    return (state() == Running);
+}
+
+bool BitTorrent::TorrentCreationTask::isFinished() const
+{
+    return (state() == Finished);
+}
+
+bool BitTorrent::TorrentCreationTask::isFailed() const
+{
+    return !m_errorMsg.isEmpty();
+}
+
+int BitTorrent::TorrentCreationTask::progress() const
+{
+    return m_progress;
+}
+
+const BitTorrent::TorrentCreatorResult &BitTorrent::TorrentCreationTask::result() const
+{
+    return m_result;
+}
+
+QString BitTorrent::TorrentCreationTask::errorMsg() const
+{
+    return m_errorMsg;
+}
+
+QDateTime BitTorrent::TorrentCreationTask::timeAdded() const
+{
+    return m_timeAdded;
+}
+
+QDateTime BitTorrent::TorrentCreationTask::timeStarted() const
+{
+    return m_timeStarted;
+}
+
+QDateTime BitTorrent::TorrentCreationTask::timeFinished() const
+{
+    return m_timeFinished;
+}
--- a/src/base/bittorrent/torrentcreationtask.h
+++ b/src/base/bittorrent/torrentcreationtask.h
@ -0,0 +1,81 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include <QDateTime>
+#include <QObject>
+#include <QString>
+
+#include "base/applicationcomponent.h"
+#include "torrentcreator.h"
+
+namespace BitTorrent
+{
+    class TorrentCreationTask final : public ApplicationComponent<QObject>
+    {
+        Q_OBJECT
+        Q_DISABLE_COPY_MOVE(TorrentCreationTask)
+
+    public:
+        enum State
+        {
+            Queued,
+            Running,
+            Finished
+        };
+
+        TorrentCreationTask(IApplication *app, const QString &id, TorrentCreator *torrentCreator
+                , bool startSeeding, QObject *parent = nullptr);
+
+        QString id() const;
+        const TorrentCreatorParams &params() const;
+        State state() const;
+        bool isQueued() const;
+        bool isRunning() const;
+        bool isFinished() const;
+        bool isFailed() const;
+        QDateTime timeAdded() const;
+        QDateTime timeStarted() const;
+        QDateTime timeFinished() const;
+        int progress() const;
+        const TorrentCreatorResult &result() const;
+        QString errorMsg() const;
+
+    private:
+        QString m_id;
+        TorrentCreatorParams m_params;
+        QDateTime m_timeAdded;
+        QDateTime m_timeStarted;
+        QDateTime m_timeFinished;
+        int m_progress = 0;
+        TorrentCreatorResult m_result;
+        QString m_errorMsg;
+    };
+}
--- a/src/base/bittorrent/torrentcreator.cpp
+++ b/src/base/bittorrent/torrentcreator.cpp
@ -1,5 +1,7 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
 *
 * This program is free software; you can redistribute it and/or
@ -28,7 +30,7 @@

 #include "torrentcreator.h"

-#include <fstream>
+#include <functional>

 #include <libtorrent/create_torrent.hpp>
 #include <libtorrent/file_storage.hpp>
@ -41,7 +43,6 @@
 #include "base/exceptions.h"
 #include "base/global.h"
 #include "base/utils/compare.h"
-#include "base/utils/fs.h"
 #include "base/utils/io.h"
 #include "base/version.h"
 #include "lttypecast.h"
@ -82,7 +83,7 @@ TorrentCreator::TorrentCreator(const TorrentCreatorParams &params, QObject *pare

 void TorrentCreator::sendProgressSignal(int currentPieceIdx, int totalPieces)
 {
-    emit updateProgress(static_cast<int>((currentPieceIdx * 100.) / totalPieces));
+    emit progressUpdated(static_cast<int>((currentPieceIdx * 100.) / totalPieces));
 }

 void TorrentCreator::checkInterruptionRequested() const
@ -103,25 +104,26 @@ bool TorrentCreator::isInterruptionRequested() const

 void TorrentCreator::run()
 {
-    emit updateProgress(0);
+    emit started();
+    emit progressUpdated(0);

    try
    {
-        const Path parentPath = m_params.inputPath.parentPath();
+        const Path parentPath = m_params.sourcePath.parentPath();
        const Utils::Compare::NaturalLessThan<Qt::CaseInsensitive> naturalLessThan {};

        // Adding files to the torrent
        lt::file_storage fs;
-        if (QFileInfo(m_params.inputPath.data()).isFile())
+        if (QFileInfo(m_params.sourcePath.data()).isFile())
        {
-            lt::add_files(fs, m_params.inputPath.toString().toStdString(), fileFilter);
+            lt::add_files(fs, m_params.sourcePath.toString().toStdString(), fileFilter);
        }
        else
        {
            // need to sort the file names by natural sort order
-            QStringList dirs = {m_params.inputPath.data()};
+            QStringList dirs = {m_params.sourcePath.data()};

-            QDirIterator dirIter {m_params.inputPath.data(), (QDir::AllDirs | QDir::NoDotAndDotDot), QDirIterator::Subdirectories};
+            QDirIterator dirIter {m_params.sourcePath.data(), (QDir::AllDirs | QDir::NoDotAndDotDot), QDirIterator::Subdirectories};
            while (dirIter.hasNext())
            {
                const QString filePath = dirIter.next();
@ -205,13 +207,29 @@ void TorrentCreator::run()

        checkInterruptionRequested();

-        // create the torrent
-        const nonstd::expected<void, QString> result = Utils::IO::saveToFile(m_params.savePath, entry);
+        const auto result = std::invoke([torrentFilePath = m_params.torrentFilePath, entry]() -> nonstd::expected<Path, QString>
+        {
+            if (!torrentFilePath.isValid())
+                return Utils::IO::saveToTempFile(entry);
+
+            const nonstd::expected<void, QString> result = Utils::IO::saveToFile(torrentFilePath, entry);
+            if (!result)
+                return nonstd::make_unexpected(result.error());
+
+            return torrentFilePath;
+        });
        if (!result)
            throw RuntimeError(result.error());

-        emit updateProgress(100);
-        emit creationSuccess(m_params.savePath, parentPath);
+        const BitTorrent::TorrentCreatorResult creatorResult
+        {
+            .torrentFilePath = result.value(),
+            .savePath = parentPath,
+            .pieceSize = newTorrent.piece_length()
+        };
+
+        emit progressUpdated(100);
+        emit creationSuccess(creatorResult);
    }
    catch (const RuntimeError &err)
    {
@ -223,6 +241,11 @@ void TorrentCreator::run()
    }
 }

+const TorrentCreatorParams &TorrentCreator::params() const
+{
+    return m_params;
+}
+
 #ifdef QBT_USES_LIBTORRENT2
 int TorrentCreator::calculateTotalPieces(const Path &inputPath, const int pieceSize, const TorrentFormat torrentFormat)
 #else
--- a/src/base/bittorrent/torrentcreator.h
+++ b/src/base/bittorrent/torrentcreator.h
@ -1,5 +1,7 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
 *
 * This program is free software; you can redistribute it and/or
@ -53,18 +55,25 @@ namespace BitTorrent
 #ifdef QBT_USES_LIBTORRENT2
        TorrentFormat torrentFormat = TorrentFormat::Hybrid;
 #else
-        bool isAlignmentOptimized;
-        int paddedFileSizeLimit;
+        bool isAlignmentOptimized = false;
+        int paddedFileSizeLimit = 0;
 #endif
        int pieceSize = 0;
-        Path inputPath;
-        Path savePath;
+        Path sourcePath;
+        Path torrentFilePath;
        QString comment;
        QString source;
        QStringList trackers;
        QStringList urlSeeds;
    };

+    struct TorrentCreatorResult
+    {
+        Path torrentFilePath;
+        Path savePath;
+        int pieceSize;
+    };
+
    class TorrentCreator final : public QObject, public QRunnable
    {
        Q_OBJECT
@ -73,24 +82,26 @@ namespace BitTorrent
    public:
        explicit TorrentCreator(const TorrentCreatorParams &params, QObject *parent = nullptr);

-        void run() override;
-
+        const TorrentCreatorParams &params() const;
        bool isInterruptionRequested() const;

-    public slots:
-        void requestInterruption();
+        void run() override;

 #ifdef QBT_USES_LIBTORRENT2
        static int calculateTotalPieces(const Path &inputPath, int pieceSize, TorrentFormat torrentFormat);
 #else
-        static int calculateTotalPieces(const Path &inputPath
-            , const int pieceSize, const bool isAlignmentOptimized, int paddedFileSizeLimit);
+        static int calculateTotalPieces(const Path &inputPath, const int pieceSize
+                , const bool isAlignmentOptimized, int paddedFileSizeLimit);
 #endif

+    public slots:
+        void requestInterruption();
+
    signals:
+        void started();
        void creationFailure(const QString &msg);
-        void creationSuccess(const Path &path, const Path &branchPath);
-        void updateProgress(int progress);
+        void creationSuccess(const TorrentCreatorResult &result);
+        void progressUpdated(int progress);

    private:
        void sendProgressSignal(int currentPieceIdx, int totalPieces);
--- a/src/base/net/downloadhandlerimpl.cpp
+++ b/src/base/net/downloadhandlerimpl.cpp
@ -30,7 +30,6 @@
 #include "downloadhandlerimpl.h"

 #include <QtSystemDetection>
-#include <QTemporaryFile>
 #include <QUrl>

 #include "base/3rdparty/expected.hpp"
@ -49,19 +48,6 @@

 const int MAX_REDIRECTIONS = 20;  // the common value for web browsers

-namespace
-{
-    nonstd::expected<Path, QString> saveToTempFile(const QByteArray &data)
-    {
-        QTemporaryFile file {Utils::Fs::tempPath().data()};
-        if (!file.open() || (file.write(data) != data.length()) || !file.flush())
-            return nonstd::make_unexpected(file.errorString());
-
-        file.setAutoRemove(false);
-        return Path(file.fileName());
-    }
-}
-
 Net::DownloadHandlerImpl::DownloadHandlerImpl(DownloadManager *manager
        , const DownloadRequest &downloadRequest, const bool useProxy)
    : DownloadHandler {manager}
@ -163,7 +149,7 @@ void Net::DownloadHandlerImpl::processFinishedDownload()
        const Path destinationPath = m_downloadRequest.destFileName();
        if (destinationPath.isEmpty())
        {
-            const nonstd::expected<Path, QString> result = saveToTempFile(m_result.data);
+            const nonstd::expected<Path, QString> result = Utils::IO::saveToTempFile(m_result.data);
            if (result)
            {
                m_result.filePath = result.value();
--- a/src/base/utils/io.cpp
+++ b/src/base/utils/io.cpp
@ -40,6 +40,7 @@
 #include <QFileDevice>
 #include <QSaveFile>
 #include <QString>
+#include <QTemporaryFile>

 #include "base/path.h"
 #include "base/utils/fs.h"
@ -149,3 +150,27 @@ nonstd::expected<void, QString> Utils::IO::saveToFile(const Path &path, const lt

    return {};
 }
+
+nonstd::expected<Path, QString> Utils::IO::saveToTempFile(const QByteArray &data)
+{
+    QTemporaryFile file {(Utils::Fs::tempPath() / Path(u"file_"_s)).data()};
+    if (!file.open() || (file.write(data) != data.length()) || !file.flush())
+        return nonstd::make_unexpected(file.errorString());
+
+    file.setAutoRemove(false);
+    return Path(file.fileName());
+}
+
+nonstd::expected<Path, QString> Utils::IO::saveToTempFile(const lt::entry &data)
+{
+    QTemporaryFile file {(Utils::Fs::tempPath() / Path(u"file_"_s)).data()};
+    if (!file.open())
+        return nonstd::make_unexpected(file.errorString());
+
+    const int bencodedDataSize = lt::bencode(Utils::IO::FileDeviceOutputIterator {file}, data);
+    if ((file.size() != bencodedDataSize) || !file.flush())
+        return nonstd::make_unexpected(file.errorString());
+
+    file.setAutoRemove(false);
+    return Path(file.fileName());
+}
--- a/src/base/utils/io.h
+++ b/src/base/utils/io.h
@ -103,4 +103,6 @@ namespace Utils::IO

    nonstd::expected<void, QString> saveToFile(const Path &path, const QByteArray &data);
    nonstd::expected<void, QString> saveToFile(const Path &path, const lt::entry &data);
+    nonstd::expected<Path, QString> saveToTempFile(const QByteArray &data);
+    nonstd::expected<Path, QString> saveToTempFile(const lt::entry &data);
 }
--- a/src/gui/torrentcreatordialog.cpp
+++ b/src/gui/torrentcreatordialog.cpp
@ -1,5 +1,7 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 * Copyright (C) 2017  Mike Tzou (Chocobo1)
 * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
 *
@ -235,8 +237,8 @@ void TorrentCreatorDialog::onCreateButtonClicked()
        .paddedFileSizeLimit = getPaddedFileSizeLimit(),
 #endif
        .pieceSize = getPieceSize(),
-        .inputPath = inputPath,
-        .savePath = destPath,
+        .sourcePath = inputPath,
+        .torrentFilePath = destPath,
        .comment = m_ui->txtComment->toPlainText(),
        .source = m_ui->lineEditSource->text(),
        .trackers = trackers,
@ -247,7 +249,7 @@ void TorrentCreatorDialog::onCreateButtonClicked()
    connect(this, &QDialog::rejected, torrentCreator, &BitTorrent::TorrentCreator::requestInterruption);
    connect(torrentCreator, &BitTorrent::TorrentCreator::creationSuccess, this, &TorrentCreatorDialog::handleCreationSuccess);
    connect(torrentCreator, &BitTorrent::TorrentCreator::creationFailure, this, &TorrentCreatorDialog::handleCreationFailure);
-    connect(torrentCreator, &BitTorrent::TorrentCreator::updateProgress, this, &TorrentCreatorDialog::updateProgressBar);
+    connect(torrentCreator, &BitTorrent::TorrentCreator::progressUpdated, this, &TorrentCreatorDialog::updateProgressBar);

    // run the torrentCreator in a thread
    m_threadPool.start(torrentCreator);
@ -261,36 +263,36 @@ void TorrentCreatorDialog::handleCreationFailure(const QString &msg)
    setInteractionEnabled(true);
 }

-void TorrentCreatorDialog::handleCreationSuccess(const Path &path, const Path &branchPath)
+void TorrentCreatorDialog::handleCreationSuccess(const BitTorrent::TorrentCreatorResult &result)
 {
    setCursor(QCursor(Qt::ArrowCursor));
    setInteractionEnabled(true);

    QMessageBox::information(this, tr("Torrent creator")
-        , u"%1\n%2"_s.arg(tr("Torrent created:"), path.toString()));
+        , u"%1\n%2"_s.arg(tr("Torrent created:"), result.torrentFilePath.toString()));

    if (m_ui->checkStartSeeding->isChecked())
    {
-        const auto loadResult = BitTorrent::TorrentDescriptor::loadFromFile(path);
-        if (!loadResult)
+        if (const auto loadResult = BitTorrent::TorrentDescriptor::loadFromFile(result.torrentFilePath))
+        {
+            BitTorrent::AddTorrentParams params;
+            params.savePath = result.savePath;
+            params.skipChecking = true;
+            if (m_ui->checkIgnoreShareLimits->isChecked())
+            {
+                params.ratioLimit = BitTorrent::Torrent::NO_RATIO_LIMIT;
+                params.seedingTimeLimit = BitTorrent::Torrent::NO_SEEDING_TIME_LIMIT;
+                params.inactiveSeedingTimeLimit = BitTorrent::Torrent::NO_INACTIVE_SEEDING_TIME_LIMIT;
+            }
+            params.useAutoTMM = false;  // otherwise if it is on by default, it will overwrite `savePath` to the default save path
+
+            BitTorrent::Session::instance()->addTorrent(loadResult.value(), params);
+        }
+        else
        {
            const QString message = tr("Add torrent to transfer list failed.") + u'\n' + tr("Reason: \"%1\"").arg(loadResult.error());
            QMessageBox::critical(this, tr("Add torrent failed"), message);
-            return;
        }
-
-        BitTorrent::AddTorrentParams params;
-        params.savePath = branchPath;
-        params.skipChecking = true;
-        if (m_ui->checkIgnoreShareLimits->isChecked())
-        {
-            params.ratioLimit = BitTorrent::Torrent::NO_RATIO_LIMIT;
-            params.seedingTimeLimit = BitTorrent::Torrent::NO_SEEDING_TIME_LIMIT;
-            params.inactiveSeedingTimeLimit = BitTorrent::Torrent::NO_INACTIVE_SEEDING_TIME_LIMIT;
-        }
-        params.useAutoTMM = false;  // otherwise if it is on by default, it will overwrite `savePath` to the default save path
-
-        BitTorrent::Session::instance()->addTorrent(loadResult.value(), params);
    }
 }

--- a/src/gui/torrentcreatordialog.h
+++ b/src/gui/torrentcreatordialog.h
@ -1,5 +1,6 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 * Copyright (C) 2017  Mike Tzou (Chocobo1)
 * Copyright (C) 2010  Christophe Dumez <chris@qbittorrent.org>
 *
@ -58,7 +59,7 @@ private slots:
    void onAddFileButtonClicked();
    void onAddFolderButtonClicked();
    void handleCreationFailure(const QString &msg);
-    void handleCreationSuccess(const Path &path, const Path &branchPath);
+    void handleCreationSuccess(const BitTorrent::TorrentCreatorResult &result);

 private:
    void dropEvent(QDropEvent *event) override;
--- a/src/webui/CMakeLists.txt
+++ b/src/webui/CMakeLists.txt
@ -9,6 +9,7 @@ add_library(qbt_webui STATIC
    api/rsscontroller.h
    api/searchcontroller.h
    api/synccontroller.h
+    api/torrentcreatorcontroller.h
    api/torrentscontroller.h
    api/transfercontroller.h
    api/serialize/serialize_torrent.h
@ -25,6 +26,7 @@ add_library(qbt_webui STATIC
    api/rsscontroller.cpp
    api/searchcontroller.cpp
    api/synccontroller.cpp
+    api/torrentcreatorcontroller.cpp
    api/torrentscontroller.cpp
    api/transfercontroller.cpp
    api/serialize/serialize_torrent.cpp
--- a/src/webui/api/torrentcreatorcontroller.cpp
+++ b/src/webui/api/torrentcreatorcontroller.cpp
@ -0,0 +1,247 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#include "torrentcreatorcontroller.h"
+
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QStringList>
+
+#include "base/global.h"
+#include "base/bittorrent/torrentcreationmanager.h"
+#include "base/preferences.h"
+#include "base/utils/io.h"
+#include "base/utils/string.h"
+#include "apierror.h"
+
+const QString KEY_COMMENT = u"comment"_s;
+const QString KEY_ERROR_MESSAGE = u"errorMessage"_s;
+const QString KEY_FORMAT = u"format"_s;
+const QString KEY_OPTIMIZE_ALIGNMENT = u"optimizeAlignment"_s;
+const QString KEY_PADDED_FILE_SIZE_LIMIT = u"paddedFileSizeLimit"_s;
+const QString KEY_PIECE_SIZE = u"pieceSize"_s;
+const QString KEY_PRIVATE = u"private"_s;
+const QString KEY_PROGRESS = u"progress"_s;
+const QString KEY_SOURCE = u"source"_s;
+const QString KEY_SOURCE_PATH = u"sourcePath"_s;
+const QString KEY_STATUS = u"status"_s;
+const QString KEY_TASK_ID = u"taskID"_s;
+const QString KEY_TIME_ADDED = u"timeAdded"_s;
+const QString KEY_TIME_FINISHED = u"timeFinished"_s;
+const QString KEY_TIME_STARTED = u"timeStarted"_s;
+const QString KEY_TORRENT_FILE_PATH = u"torrentFilePath"_s;
+const QString KEY_TRACKERS = u"trackers"_s;
+const QString KEY_URL_SEEDS = u"urlSeeds"_s;
+
+namespace
+{
+    using Utils::String::parseBool;
+    using Utils::String::parseInt;
+
+#ifdef QBT_USES_LIBTORRENT2
+    BitTorrent::TorrentFormat parseTorrentFormat(const QString &str)
+    {
+        if (str == u"v1")
+            return BitTorrent::TorrentFormat::V1;
+        if (str == u"v2")
+            return BitTorrent::TorrentFormat::V2;
+        return BitTorrent::TorrentFormat::Hybrid;
+    }
+
+    QString torrentFormatToString(const BitTorrent::TorrentFormat torrentFormat)
+    {
+        switch (torrentFormat)
+        {
+        case BitTorrent::TorrentFormat::V1:
+            return u"v1"_s;
+        case BitTorrent::TorrentFormat::V2:
+            return u"v2"_s;
+        default:
+            return u"hybrid"_s;
+        }
+    }
+#endif
+
+    QString taskStatusString(const std::shared_ptr<BitTorrent::TorrentCreationTask> task)
+    {
+        if (task->isFailed())
+            return u"Failed"_s;
+
+        switch (task->state())
+        {
+        case BitTorrent::TorrentCreationTask::Queued:
+        default:
+            return u"Queued"_s;
+        case BitTorrent::TorrentCreationTask::Running:
+            return u"Running"_s;
+        case BitTorrent::TorrentCreationTask::Finished:
+            return u"Finished"_s;
+        }
+    }
+}
+
+TorrentCreatorController::TorrentCreatorController(BitTorrent::TorrentCreationManager *torrentCreationManager, IApplication *app, QObject *parent)
+    : APIController(app, parent)
+    , m_torrentCreationManager {torrentCreationManager}
+{
+}
+
+void TorrentCreatorController::addTaskAction()
+{
+    requireParams({KEY_SOURCE_PATH});
+
+    const BitTorrent::TorrentCreatorParams createTorrentParams
+    {
+        .isPrivate = parseBool(params()[KEY_PRIVATE]).value_or(false),
+#ifdef QBT_USES_LIBTORRENT2
+        .torrentFormat = parseTorrentFormat(params()[KEY_FORMAT].toLower()),
+#else
+        .isAlignmentOptimized = parseBool(params()[KEY_OPTIMIZE_ALIGNMENT]).value_or(true),
+        .paddedFileSizeLimit = parseInt(params()[KEY_PADDED_FILE_SIZE_LIMIT]).value_or(-1),
+#endif
+        .pieceSize = parseInt(params()[KEY_PIECE_SIZE]).value_or(0),
+        .sourcePath = Path(params()[KEY_SOURCE_PATH]),
+        .torrentFilePath = Path(params()[KEY_TORRENT_FILE_PATH]),
+        .comment = params()[KEY_COMMENT],
+        .source = params()[KEY_COMMENT],
+        .trackers = params()[KEY_TRACKERS].split(u'|'),
+        .urlSeeds = params()[KEY_URL_SEEDS].split(u'|')
+    };
+
+    bool const startSeeding = parseBool(params()[u"startSeeding"_s]).value_or(createTorrentParams.torrentFilePath.isEmpty());
+
+    auto task = m_torrentCreationManager->createTask(createTorrentParams, startSeeding);
+    if (!task)
+        throw APIError(APIErrorType::Conflict, tr("Too many active tasks"));
+
+    setResult(QJsonObject {{KEY_TASK_ID, task->id()}});
+}
+
+void TorrentCreatorController::statusAction()
+{
+    const QString id = params()[KEY_TASK_ID];
+
+    const auto singleTask = m_torrentCreationManager->getTask(id);
+    if (!id.isEmpty() && !singleTask)
+        throw APIError(APIErrorType::NotFound);
+
+    const QList<std::shared_ptr<BitTorrent::TorrentCreationTask>> tasks = id.isEmpty()
+            ? m_torrentCreationManager->tasks()
+            : QList<std::shared_ptr<BitTorrent::TorrentCreationTask>> {singleTask};
+    QJsonArray statusArray;
+    for (const auto &task : tasks)
+    {
+        QJsonObject taskJson {
+            {KEY_TASK_ID, task->id()},
+            {KEY_SOURCE_PATH, task->params().sourcePath.toString()},
+            {KEY_PIECE_SIZE, task->params().pieceSize},
+            {KEY_PRIVATE, task->params().isPrivate},
+            {KEY_TIME_ADDED, task->timeAdded().toString()},
+#ifdef QBT_USES_LIBTORRENT2
+            {KEY_FORMAT, torrentFormatToString(task->params().torrentFormat)},
+#else
+            {KEY_OPTIMIZE_ALIGNMENT, task->params().isAlignmentOptimized},
+            {KEY_PADDED_FILE_SIZE_LIMIT, task->params().paddedFileSizeLimit},
+#endif
+            {KEY_STATUS, taskStatusString(task)},
+        };
+
+        if (!task->params().comment.isEmpty())
+            taskJson[KEY_COMMENT] = task->params().comment;
+
+        if (!task->params().torrentFilePath.isEmpty())
+            taskJson[KEY_TORRENT_FILE_PATH] = task->params().torrentFilePath.toString();
+
+        if (!task->params().source.isEmpty())
+            taskJson[KEY_SOURCE] = task->params().source;
+
+        if (!task->params().trackers.isEmpty())
+            taskJson[KEY_TRACKERS] = QJsonArray::fromStringList(task->params().trackers);
+
+        if (!task->params().urlSeeds.isEmpty())
+            taskJson[KEY_URL_SEEDS] = QJsonArray::fromStringList(task->params().urlSeeds);
+
+        if (const QDateTime timeStarted = task->timeStarted(); !timeStarted.isNull())
+            taskJson[KEY_TIME_STARTED] = timeStarted.toString();
+
+        if (const QDateTime timeFinished = task->timeFinished(); !task->timeFinished().isNull())
+            taskJson[KEY_TIME_FINISHED] = timeFinished.toString();
+
+        if (task->isFinished())
+        {
+            if (task->isFailed())
+            {
+                taskJson[KEY_ERROR_MESSAGE] = task->errorMsg();
+            }
+            else
+            {
+                taskJson[KEY_PIECE_SIZE] = task->result().pieceSize;
+            }
+        }
+        else if (task->isRunning())
+        {
+            taskJson[KEY_PROGRESS] = task->progress();
+        }
+
+        statusArray.append(taskJson);
+    }
+
+    setResult(statusArray);
+}
+
+void TorrentCreatorController::torrentFileAction()
+{
+    requireParams({KEY_TASK_ID});
+    const QString id = params()[KEY_TASK_ID];
+
+    const auto task = m_torrentCreationManager->getTask(id);
+    if (!task)
+        throw APIError(APIErrorType::NotFound);
+
+    if (!task->isFinished())
+        throw APIError(APIErrorType::Conflict, tr("Torrent creation is still unfinished."));
+
+    if (task->isFailed())
+        throw APIError(APIErrorType::Conflict, tr("Torrent creation failed."));
+
+    const auto readResult = Utils::IO::readFile(task->result().torrentFilePath, Preferences::instance()->getTorrentFileSizeLimit());
+    if (!readResult)
+        throw APIError(APIErrorType::Conflict, readResult.error().message);
+
+    setResult(readResult.value(), u"application/x-bittorrent"_s, (id + u".torrent"));
+}
+
+void TorrentCreatorController::deleteTaskAction()
+{
+    requireParams({KEY_TASK_ID});
+    const QString id = params()[KEY_TASK_ID];
+
+    if (!m_torrentCreationManager->deleteTask(id))
+        throw APIError(APIErrorType::NotFound);
+}
--- a/src/webui/api/torrentcreatorcontroller.h
+++ b/src/webui/api/torrentcreatorcontroller.h
@ -0,0 +1,55 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
+ *
+ * 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.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include "apicontroller.h"
+
+namespace BitTorrent
+{
+    class TorrentCreationManager;
+}
+
+class TorrentCreatorController final : public APIController
+{
+    Q_OBJECT
+    Q_DISABLE_COPY_MOVE(TorrentCreatorController)
+
+public:
+    TorrentCreatorController(BitTorrent::TorrentCreationManager *torrentCreationManager, IApplication *app, QObject *parent = nullptr);
+
+private slots:
+    void addTaskAction();
+    void statusAction();
+    void torrentFileAction();
+    void deleteTaskAction();
+
+private:
+    BitTorrent::TorrentCreationManager *m_torrentCreationManager = nullptr;
+};
--- a/src/webui/webapplication.cpp
+++ b/src/webui/webapplication.cpp
@ -1,6 +1,7 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2014, 2022-2023  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2014-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
@ -46,6 +47,7 @@
 #include <QUrl>

 #include "base/algorithm.h"
+#include "base/bittorrent/torrentcreationmanager.h"
 #include "base/http/httperror.h"
 #include "base/logger.h"
 #include "base/preferences.h"
@ -62,6 +64,7 @@
 #include "api/rsscontroller.h"
 #include "api/searchcontroller.h"
 #include "api/synccontroller.h"
+#include "api/torrentcreatorcontroller.h"
 #include "api/torrentscontroller.h"
 #include "api/transfercontroller.h"
 #include "freediskspacechecker.h"
@ -112,9 +115,8 @@ namespace
        if (contentType.startsWith(u"image/"))
            return u"private, max-age=604800"_s;  // 1 week

-        if ((contentType == Http::CONTENT_TYPE_CSS)
-            || (contentType == Http::CONTENT_TYPE_JS))
-            {
+        if ((contentType == Http::CONTENT_TYPE_CSS) || (contentType == Http::CONTENT_TYPE_JS))
+        {
            // short interval in case of program update
            return u"private, max-age=43200"_s;  // 12 hrs
        }
@ -162,6 +164,7 @@ WebApplication::WebApplication(IApplication *app, QObject *parent)
    , m_workerThread {new QThread}
    , m_freeDiskSpaceChecker {new FreeDiskSpaceChecker}
    , m_freeDiskSpaceCheckingTimer {new QTimer(this)}
+    , m_torrentCreationManager {new BitTorrent::TorrentCreationManager(app, this)}
 {
    declarePublicAPI(u"auth/login"_s);

@ -724,16 +727,18 @@ void WebApplication::sessionStart()
    m_currentSession = new WebSession(generateSid(), app());
    m_sessions[m_currentSession->id()] = m_currentSession;

-    m_currentSession->registerAPIController<AppController>(u"app"_s);
-    m_currentSession->registerAPIController<LogController>(u"log"_s);
-    m_currentSession->registerAPIController<RSSController>(u"rss"_s);
-    m_currentSession->registerAPIController<SearchController>(u"search"_s);
-    m_currentSession->registerAPIController<TorrentsController>(u"torrents"_s);
-    m_currentSession->registerAPIController<TransferController>(u"transfer"_s);
+    m_currentSession->registerAPIController(u"app"_s, new AppController(app(), this));
+    m_currentSession->registerAPIController(u"log"_s, new LogController(app(), this));
+    m_currentSession->registerAPIController(u"torrentcreator"_s, new TorrentCreatorController(m_torrentCreationManager, app(), this));
+    m_currentSession->registerAPIController(u"rss"_s, new RSSController(app(), this));
+    m_currentSession->registerAPIController(u"search"_s, new SearchController(app(), this));
+    m_currentSession->registerAPIController(u"torrents"_s, new TorrentsController(app(), this));
+    m_currentSession->registerAPIController(u"transfer"_s, new TransferController(app(), this));

-    auto *syncController = m_currentSession->registerAPIController<SyncController>(u"sync"_s);
+    auto *syncController = new SyncController(app(), this);
    syncController->updateFreeDiskSpace(m_freeDiskSpaceChecker->lastResult());
    connect(m_freeDiskSpaceChecker, &FreeDiskSpaceChecker::checked, syncController, &SyncController::updateFreeDiskSpace);
+    m_currentSession->registerAPIController(u"sync"_s, syncController);

    QNetworkCookie cookie {m_sessionCookieName.toLatin1(), m_currentSession->id().toUtf8()};
    cookie.setHttpOnly(true);
@ -908,6 +913,12 @@ void WebSession::updateTimestamp()
    m_timer.start();
 }

+void WebSession::registerAPIController(const QString &scope, APIController *controller)
+{
+    Q_ASSERT(controller);
+    m_apiControllers[scope] = controller;
+}
+
 APIController *WebSession::getAPIController(const QString &scope) const
 {
    return m_apiControllers.value(scope);
--- a/src/webui/webapplication.h
+++ b/src/webui/webapplication.h
@ -1,6 +1,7 @@
 /*
 * Bittorrent Client using Qt and libtorrent.
- * Copyright (C) 2014, 2017, 2022-2023  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2014-2024  Vladimir Golovnev <glassez@yandex.ru>
+ * Copyright (C) 2024  Radu Carpa <radu.carpa@cern.ch>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
@ -62,6 +63,11 @@ class AuthController;
 class FreeDiskSpaceChecker;
 class WebApplication;

+namespace BitTorrent
+{
+    class TorrentCreationManager;
+}
+
 class WebSession final : public ApplicationComponent<QObject>, public ISession
 {
 public:
@ -72,15 +78,7 @@ public:
    bool hasExpired(qint64 seconds) const;
    void updateTimestamp();

-    template <typename T>
-    T *registerAPIController(const QString &scope)
-    {
-        static_assert(std::is_base_of_v<APIController, T>, "Class should be derived from APIController.");
-        auto *controller = new T(app(), this);
-        m_apiControllers[scope] = controller;
-        return controller;
-    }
-
+    void registerAPIController(const QString &scope, APIController *controller);
    APIController *getAPIController(const QString &scope) const;

 private:
@ -172,6 +170,8 @@ private:
        {{u"search"_s, u"stop"_s}, Http::METHOD_POST},
        {{u"search"_s, u"uninstallPlugin"_s}, Http::METHOD_POST},
        {{u"search"_s, u"updatePlugins"_s}, Http::METHOD_POST},
+        {{u"torrentcreator"_s, u"addTask"_s}, Http::METHOD_POST},
+        {{u"torrentcreator"_s, u"deleteTask"_s}, Http::METHOD_POST},
        {{u"torrents"_s, u"add"_s}, Http::METHOD_POST},
        {{u"torrents"_s, u"addPeers"_s}, Http::METHOD_POST},
        {{u"torrents"_s, u"addTags"_s}, Http::METHOD_POST},
@ -254,4 +254,5 @@ private:
    Utils::Thread::UniquePtr m_workerThread;
    FreeDiskSpaceChecker *m_freeDiskSpaceChecker = nullptr;
    QTimer *m_freeDiskSpaceCheckingTimer = nullptr;
+    BitTorrent::TorrentCreationManager *m_torrentCreationManager = nullptr;
 };