add setComment API endpoint

src/base/bittorrent/torrent.h

@@ -144,6 +144,7 @@ namespace BitTorrent
         virtual QDateTime creationDate() const = 0;
         virtual QString creator() const = 0;
         virtual QString comment() const = 0;
+        virtual void setComment(const QString &comment) = 0;
         virtual bool isPrivate() const = 0;
         virtual qlonglong totalSize() const = 0;
         virtual qlonglong wantedSize() const = 0;

src/base/bittorrent/torrentimpl.cpp

@@ -2959,3 +2959,8 @@ QFuture<std::invoke_result_t<Func>> TorrentImpl::invokeAsync(Func &&func) const
 
     return future;
 }
+
+void TorrentImpl::setComment(const QString &comment)
+{
+    m_comment = comment;
+}

src/base/bittorrent/torrentimpl.h

@@ -106,6 +106,7 @@ namespace BitTorrent
         QDateTime creationDate() const override;
         QString creator() const override;
         QString comment() const override;
+        void setComment(const QString &comment) override;
         bool isPrivate() const override;
         qlonglong totalSize() const override;
         qlonglong wantedSize() const override;

src/webui/api/torrentscontroller.cpp

@@ -2143,3 +2143,20 @@ void TorrentsController::onMetadataDownloaded(const BitTorrent::TorrentInfo &inf
             iter.value().setTorrentInfo(info);
     }
 }
+
+void TorrentsController::setCommentAction()
+{
+    requireParams({u"hash"_s, u"comment"_s});
+
+    const auto id = BitTorrent::TorrentID::fromString(params()[u"hash"_s]);
+    QString comment = params()[u"comment"_s].trimmed();
+
+    BitTorrent::Torrent *const torrent = BitTorrent::Session::instance()->getTorrent(id);
+    if (!torrent)
+        throw APIError(APIErrorType::NotFound);
+
+    comment.replace(QRegularExpression(u"\r?\n|\r"_s), u" "_s);
+    torrent->setComment(comment);
+
+    setResult(QString());
+}

src/webui/api/torrentscontroller.h

@@ -71,6 +71,7 @@ private slots:
     void recheckAction();
     void reannounceAction();
     void renameAction();
+    void setCommentAction();
     void setCategoryAction();
     void createCategoryAction();
     void editCategoryAction();