Fix wrong "added on" date

This only happens for magnet links when its metadata has yet to be retrieved.
Closes #11124.

src/base/bittorrent/session.cpp

@@ -2028,6 +2028,11 @@ bool Session::addTorrent_impl(CreateTorrentParams params, const MagnetUri &magne
         p.upload_limit = params.uploadLimit;
         p.download_limit = params.downloadLimit;
 
+#if (LIBTORRENT_VERSION_NUM >= 10200)
+        if (params.addedTime.isValid())
+            p.added_time = params.addedTime.toSecsSinceEpoch();
+#endif
+
         // Preallocation mode
         p.storage_mode = isPreallocationEnabled()
             ? lt::storage_mode_allocate : lt::storage_mode_sparse;
@@ -4464,6 +4469,10 @@ namespace
         torrentParams.firstLastPiecePriority = fast.dict_find_int_value("qBt-firstLastPiecePriority");
         torrentParams.sequential = fast.dict_find_int_value("qBt-sequential");
 
+        const lt::bdecode_node addedTimeNode = fast.dict_find("qBt-addedTime");
+        if (addedTimeNode.type() == lt::bdecode_node::int_t)
+            torrentParams.addedTime = QDateTime::fromSecsSinceEpoch(addedTimeNode.int_value());
+
         queuePos = fast.dict_find_int_value("qBt-queuePosition");
 
         return true;

src/base/bittorrent/torrenthandle.cpp

@@ -50,7 +50,6 @@
 #endif
 
 #include <QBitArray>
-#include <QDateTime>
 #include <QDebug>
 #include <QDir>
 #include <QFile>
@@ -1775,6 +1774,8 @@ void TorrentHandle::handleSaveResumeDataAlert(const lt::save_resume_data_alert *
         // restored if qBittorrent quits before the metadata are retrieved:
         resumeData["qBt-firstLastPiecePriority"] = hasFirstLastPiecePriority();
         resumeData["qBt-sequential"] = isSequentialDownload();
+
+        resumeData["qBt-addedTime"] = addedTime().toSecsSinceEpoch();
     }
     else {
         const auto savePath = resumeData.find_key("save_path")->string();

src/base/bittorrent/torrenthandle.h

@@ -36,6 +36,7 @@
 #include <libtorrent/torrent_handle.hpp>
 #include <libtorrent/torrent_status.hpp>
 
+#include <QDateTime>
 #include <QHash>
 #include <QObject>
 #include <QQueue>
@@ -83,6 +84,7 @@ namespace BitTorrent
         int downloadLimit;
         // for new torrents
         QVector<DownloadPriority> filePriorities;
+        QDateTime addedTime;
         // for restored torrents
         qreal ratioLimit;
         int seedingTimeLimit;