Create a seedtime table and a mysql trigger to update it

gazelle.sql

   PRIMARY KEY (`UserID`)
 ) ENGINE=InnoDB CHARSET=utf8;
 
+CREATE TABLE `users_seedtime` (
+  `UserID` int(10) unsigned NOT NULL,
+  `TorrentID` int(10) unsigned NOT NULL,
+  `SeedTime` int(10) unsigned NOT NULL DEFAULT '0',
+  `Uploaded` bigint(20) NOT NULL DEFAULT '0',
+  `LastUpdate` datetime NOT NULL,
+  `Downloaded` int(10) unsigned NOT NULL DEFAULT '0',
+  PRIMARY KEY (`UserID`,`TorrentID`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
 CREATE TABLE `users_sessions` (
   `UserID` int(10) NOT NULL,
   `SessionID` char(64) NOT NULL,
 INSERT INTO forums_categories (ID, Sort, Name) VALUES (8,8,'Music');
 
 INSERT INTO forums_categories (ID, Sort, Name) VALUES (20,20,'Trash');
+
+DELIMITER ;;
+CREATE TRIGGER update_seedtime
+  AFTER UPDATE ON `xbt_files_users`
+  FOR EACH ROW BEGIN
+    IF ( (OLD.timespent < NEW.timespent) AND (OLD.active = 1) AND (NEW.active = 1) ) THEN
+      INSERT INTO users_seedtime
+        (UserID, TorrentID, SeedTime, Uploaded, Downloaded, LastUpdate)
+        VALUES
+        (NEW.uid, NEW.fid, NEW.timespent, NEW.uploaded, NEW.downloaded, NOW())
+        ON DUPLICATE KEY UPDATE
+          SeedTime = SeedTime + (NEW.timespent - OLD.timespent),
+          Uploaded = Uploaded + (NEW.uploaded - OLD.uploaded),
+          Downloaded = Downloaded + (NEW.downloaded - OLD.downloaded),
+          LastUpdate = NOW();
+    END IF;
+  END;;
+DELIMITER ;

sections/snatchlist/snatchlist.php

 $UserID = $LoggedUser['ID'];
 
 $DB->query("
-  SELECT g.ID,g.Name,g.WikiImage,g.CategoryID,x.fid,f.mtime,f.active,f.uploaded,f.downloaded,t.UserID,x.seedtime
-  FROM xbt_snatched as x
-  JOIN torrents AS t ON x.fid = t.ID
+  SELECT
+    g.ID,
+    g.Name,
+    g.WikiImage,
+    g.CategoryID,
+    f.active,
+    t.UserID,
+    s.TorrentID,
+    s.LastUpdate,
+    s.SeedTime,
+    s.Uploaded
+  FROM users_seedtime as s
+  JOIN torrents AS t ON s.TorrentID = t.ID
   JOIN torrents_group AS g ON g.ID = t.GroupID
-  LEFT JOIN xbt_files_users AS f ON x.fid = f.fid AND x.uid = f.uid
-  WHERE x.uid = $UserID");
+  LEFT JOIN xbt_files_users AS f ON s.TorrentID = f.fid AND s.UserID = f.uid
+  WHERE s.UserID = $UserID");
 if ($DB->has_results()) {
   $Torrents = $DB->to_array(false, MYSQLI_ASSOC, false);
 }
     <tr class="colhead_dark">
       <td width="1%"></td>
       <td>Torrent</td>
+      <td class="number_column">Time Seeded</td>
       <td class="number_column">Last Active</td>
       <td class="number_column">HnR</td>
     </tr>
 <?
 foreach ($Torrents as $Torrent) {
-  $DisplayName = "<a href=\"torrents.php?id=$Torrent[ID]&torrentid=$Torrent[fid]\" ";
+  $DisplayName = "<a href=\"torrents.php?id=$Torrent[ID]&torrentid=$Torrent[TorrentID]\" ";
   if (!isset($LoggedUser['CoverArt']) || $LoggedUser['CoverArt']) {
     $DisplayName .= 'onmouseover="getCover(event)" data-cover="'.ImageTools::process($Torrent['WikiImage'], true).'" onmouseleave="ungetCover(event)" ';
   }
   $DisplayName .= "dir=\"ltr\">$Torrent[Name]</a>";
 
   $HnR = false;
-  if ($Torrent['seedtime'] < 48 &&
+  if ($Torrent['SeedTime'] < (2*24*60*60) &&
       $Torrent['active'] != "1" &&
-      $Torrent['UserID'] != $UserID &&
-      $Torrent['uploaded'] < $Torrent['downloaded']
+      $Torrent['UserID'] != $UserID
   ) $HnR = true;
 ?>
   <tr class="torrent">
     <td><div class="<?=Format::css_category($Torrent['CategoryID'])?>"></div></td>
     <td><a><?=$DisplayName ?></a></td>
-    <td class="number_column"><?=($Torrent['mtime']?date('Y-m-d H:i:s',$Torrent['mtime']):'Never') ?></td>
+    <td class="number_column"><?=time_diff(time()+$Torrent['SeedTime'], 2, false) ?></td>
+    <td class="number_column"><?=$Torrent['LastUpdate'] ?></td>
     <td class="number_column"><?=($HnR?'<a class="hnr-yes">Yes</a>':'<a class="hnr-no">No</a>') ?></td>
   </tr>
 <?