server: use "dateFinished" for more accurate download completion notification

server/services/notificationService.ts

@@ -58,14 +58,14 @@ class NotificationService extends BaseService<NotificationServiceEvents> {
    * @param {Array<Notification>} notifications - Notifications to add
    * @return {Promise<void>} - Rejects with error.
    */
-  async addNotification(notifications: Array<Pick<Notification, 'id' | 'data'>>): Promise<void> {
+  async addNotification(notifications: Array<Pick<Notification, 'id' | 'data'>>, ts = Date.now()): Promise<void> {
     this.count.total += notifications.length;
     this.count.unread += notifications.length;
 
     await this.db
       .insert(
         notifications.map((notification) => ({
-          ts: Date.now(),
+          ts,
           data: notification.data,
           id: notification.id,
           read: false,

server/services/torrentService.ts

@@ -117,12 +117,16 @@ class TorrentService extends BaseService<TorrentServiceEvents> {
     const prevTorrentProperties = this.torrentListSummary.torrents[nextTorrentProperties.hash];
 
     if (hasTorrentFinished(prevTorrentProperties, nextTorrentProperties)) {
-      this.services?.notificationService.addNotification([
-        {
-          id: 'notification.torrent.finished',
-          data: {name: nextTorrentProperties.name},
-        },
-      ]);
+      const {dateFinished} = nextTorrentProperties;
+      this.services?.notificationService.addNotification(
+        [
+          {
+            id: 'notification.torrent.finished',
+            data: {name: nextTorrentProperties.name},
+          },
+        ],
+        dateFinished > 0 ? dateFinished * 1000 : undefined,
+      );
     }
   };
 }