From cf5c899a13fa7a58367494893814ade4b51690df Mon Sep 17 00:00:00 2001
From: Thomas Piccirello <thomas@piccirello.com>
Date: Tue, 1 Jul 2025 08:43:42 -0700
Subject: [PATCH] WebUI: Support reannouncing individual trackers

---
 WebAPI_Changelog.md                           |  2 +
 src/webui/api/torrentscontroller.cpp          | 26 ++++++++++--
 src/webui/www/private/index.html              |  2 +
 src/webui/www/private/scripts/dynamicTable.js |  5 +++
 .../www/private/scripts/prop-trackers.js      | 40 +++++++++++++++++++
 5 files changed, 72 insertions(+), 3 deletions(-)

diff --git a/WebAPI_Changelog.md b/WebAPI_Changelog.md
index 4dd39c4a8..ac372fa79 100644
--- a/WebAPI_Changelog.md
+++ b/WebAPI_Changelog.md
@@ -4,6 +4,8 @@
 
 * [#22932](https://github.com/qbittorrent/qBittorrent/pull/22932)
   * `torrents/categories` and `sync/maindata` now serialize categories' `downloadPath` to `null`, rather than `undefined`
+* [#22954](https://github.com/qbittorrent/qBittorrent/pull/22954)
+  * `torrents/reannounce` supports specifying individual trackers via `trackers` field
 
 ## 2.11.9
 
diff --git a/src/webui/api/torrentscontroller.cpp b/src/webui/api/torrentscontroller.cpp
index bb3e98a31..310f7c405 100644
--- a/src/webui/api/torrentscontroller.cpp
+++ b/src/webui/api/torrentscontroller.cpp
@@ -1618,10 +1618,30 @@ void TorrentsController::reannounceAction()
     requireParams({u"hashes"_s});
 
     const QStringList hashes {params()[u"hashes"_s].split(u'|')};
-    applyToTorrents(hashes, [](BitTorrent::Torrent *const torrent)
+    const QStringList urlsParam {params()[u"urls"_s].split(u'|', Qt::SkipEmptyParts)};
+
+    QSet<QString> urls;
+    urls.reserve(urlsParam.size());
+    for (const QString &urlStr : urlsParam)
+        urls << QUrl::fromPercentEncoding(urlStr.toLatin1());
+
+    applyToTorrents(hashes, [&urls](BitTorrent::Torrent *const torrent)
     {
-        torrent->forceReannounce();
-        torrent->forceDHTAnnounce();
+        if (urls.isEmpty())
+        {
+            torrent->forceReannounce();
+            torrent->forceDHTAnnounce();
+        }
+        else
+        {
+            const QList<BitTorrent::TrackerEntryStatus> &trackers = torrent->trackers();
+            for (qsizetype i = 0; i < trackers.size(); ++i)
+            {
+                const BitTorrent::TrackerEntryStatus &status = trackers.at(i);
+                if (urls.contains(status.url))
+                    torrent->forceReannounce(i);
+            }
+        }
     });
 
     setResult(QString());
diff --git a/src/webui/www/private/index.html b/src/webui/www/private/index.html
index cabeb72d0..8ba14dd6a 100644
--- a/src/webui/www/private/index.html
+++ b/src/webui/www/private/index.html
@@ -248,6 +248,8 @@
         <li class="separator"><a href="#EditTracker"><img src="images/edit-rename.svg" alt="QBT_TR(Edit tracker URL...)QBT_TR[CONTEXT=TrackerListWidget]"> QBT_TR(Edit tracker URL...)QBT_TR[CONTEXT=TrackerListWidget]</a></li>
         <li><a href="#RemoveTracker"><img src="images/list-remove.svg" alt="QBT_TR(Remove tracker)QBT_TR[CONTEXT=TrackerListWidget]"> QBT_TR(Remove tracker)QBT_TR[CONTEXT=TrackerListWidget]</a></li>
         <li><a href="#CopyTrackerUrl" id="CopyTrackerUrl"><img src="images/edit-copy.svg" alt="QBT_TR(Copy tracker URL)QBT_TR[CONTEXT=TrackerListWidget]"> QBT_TR(Copy tracker URL)QBT_TR[CONTEXT=TrackerListWidget]</a></li>
+        <li><a href="#ReannounceTrackers" id="ReannounceTrackers"><img src="images/view-refresh.svg" alt="QBT_TR(Copy tracker URL)QBT_TR[CONTEXT=TrackerListWidget]"> QBT_TR(Force reannounce to selected tracker(s))QBT_TR[CONTEXT=TrackerListWidget]</a></li>
+        <li class="separator"><a href="#ReannounceAllTrackers" id="ReannounceAllTrackers"><img src="images/view-refresh.svg" alt="QBT_TR(Copy tracker URL)QBT_TR[CONTEXT=TrackerListWidget]"> QBT_TR(Force reannounce to all trackers)QBT_TR[CONTEXT=TrackerListWidget]</a></li>
     </ul>
     <ul id="torrentPeersMenu" class="contextMenu">
         <li><a href="#addPeer"><img src="images/peers-add.svg" alt="QBT_TR(Add peers...)QBT_TR[CONTEXT=PeerListWidget]"> QBT_TR(Add peers...)QBT_TR[CONTEXT=PeerListWidget]</a></li>
diff --git a/src/webui/www/private/scripts/dynamicTable.js b/src/webui/www/private/scripts/dynamicTable.js
index 032a79a1e..3d3f656a8 100644
--- a/src/webui/www/private/scripts/dynamicTable.js
+++ b/src/webui/www/private/scripts/dynamicTable.js
@@ -1818,6 +1818,11 @@ window.qBittorrent.DynamicTable ??= (() => {
         onSelectedRowChanged() {
             updatePropertiesPanel();
         }
+
+        isStopped(hash) {
+            const row = this.getRow(hash);
+            return (row === undefined) ? true : row.full_data.state.includes("stopped");
+        }
     }
 
     class TorrentPeersTable extends DynamicTable {
diff --git a/src/webui/www/private/scripts/prop-trackers.js b/src/webui/www/private/scripts/prop-trackers.js
index 079a61673..688ee6e61 100644
--- a/src/webui/www/private/scripts/prop-trackers.js
+++ b/src/webui/www/private/scripts/prop-trackers.js
@@ -148,6 +148,12 @@ window.qBittorrent.PropTrackers ??= (() => {
             },
             RemoveTracker: (element, ref) => {
                 removeTrackerFN(element);
+            },
+            ReannounceTrackers: (element, ref) => {
+                reannounceTrackersFN(element, torrentTrackersTable.selectedRowsIds());
+            },
+            ReannounceAllTrackers: (element, ref) => {
+                reannounceTrackersFN(element, []);
             }
         },
         offsets: {
@@ -164,6 +170,8 @@ window.qBittorrent.PropTrackers ??= (() => {
                 this.hideItem("EditTracker");
                 this.hideItem("RemoveTracker");
                 this.hideItem("CopyTrackerUrl");
+                this.hideItem("ReannounceTrackers");
+                this.hideItem("ReannounceAllTrackers");
             }
             else {
                 if (selectedTrackers.length === 1)
@@ -173,6 +181,16 @@ window.qBittorrent.PropTrackers ??= (() => {
 
                 this.showItem("RemoveTracker");
                 this.showItem("CopyTrackerUrl");
+
+                const torrentHash = torrentsTable.getCurrentTorrentID();
+                if (torrentsTable.isStopped(torrentHash)) {
+                    this.hideItem("ReannounceTrackers");
+                    this.hideItem("ReannounceAllTrackers");
+                }
+                else {
+                    this.showItem("ReannounceTrackers");
+                    this.showItem("ReannounceAllTrackers");
+                }
             }
         }
     });
@@ -253,6 +271,28 @@ window.qBittorrent.PropTrackers ??= (() => {
             });
     };
 
+    const reannounceTrackersFN = (element, trackers) => {
+        if (current_hash.length === 0)
+            return;
+
+        const body = new URLSearchParams({
+            hashes: current_hash
+        });
+        if (trackers.length > 0)
+            body.set("urls", trackers.map(encodeURIComponent).join("|"));
+
+        fetch("api/v2/torrents/reannounce", {
+                method: "POST",
+                body: body
+            })
+            .then((response) => {
+                if (!response.ok)
+                    return;
+
+                updateData();
+            });
+    };
+
     const clear = () => {
         torrentTrackersTable.clear();
     };