From: Damyan Ivanov <dmn@debian.org>
Date: Fri, 12 Nov 2021 06:42:35 +0000 (+0000)
Subject: fix DB stats retrieval when no songs were queued recently
X-Git-Url: https://git.ktnx.net/?p=mpd-feeder.git;a=commitdiff_plain;h=a24e487d2c6c941767f7cba0a96aec0400be1aa7

fix DB stats retrieval when no songs were queued recently

strangely one of the totals was getting undef and broke the division
perhaps the UNION is not working as expected?
---

diff --git a/lib/App/MPD/Feeder.pm b/lib/App/MPD/Feeder.pm
index 4285e70..c23b4b4 100644
--- a/lib/App/MPD/Feeder.pm
+++ b/lib/App/MPD/Feeder.pm
@@ -248,7 +248,6 @@ SQL
             $sql =~ s/^SELECT .+$/SELECT COUNT(DISTINCT s.path)/m;
             $sql =~ s/^ORDER BY .+$//m;
             $sql =~ s/^LIMIT .+$//m;
-            $log->debug($sql);
             my $sth = $db->prepare_cached($sql);
             pop @params;
             $sth->execute(@params);
@@ -258,26 +257,22 @@ SQL
             $sth = $db->prepare_cached('SELECT COUNT(*) FROM songs');
             $sth->execute;
             my $total = ($sth->fetchrow_array)[0];
+            $sth->finish;
             $log->debug(
                 sprintf(
                     "Number of songs meeting the criteria: %d out of total %d (%5.2f%%)",
                     $count, $total, 100.0 * $count / $total
                 )
             );
-            $sth->finish;
 
             $sql = <<SQL;
 SELECT COUNT(*)
 FROM songs s
 WHERE (s.last_queued IS NULL OR s.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
-UNION
-SELECT COUNT(*)
-FROM songs
 SQL
             $sth = $db->prepare_cached($sql);
             $sth->execute($opt->min_song_interval);
             $count = ($sth->fetchrow_array)[0];
-            $total = ($sth->fetchrow_array)[0];
             $sth->finish;
 
             $log->debug(
@@ -292,41 +287,43 @@ SQL
 SELECT COUNT(*)
 FROM artists ar
 WHERE (ar.last_queued IS NULL OR ar.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
-UNION
-SELECT COUNT(*)
-FROM artists
 SQL
             $sth = $db->prepare_cached($sql);
             $sth->execute($opt->min_artist_interval);
             $count = ($sth->fetchrow_array)[0];
+            $sth->finish;
+
+            $sth = $db->prepare_cached('SELECT COUNT(*) FROM artists');
+            $sth->execute;
             $total = ($sth->fetchrow_array)[0];
+            $sth->finish;
             $log->debug(
                 sprintf(
                     "Number of artists not queued soon: %d out of total %d (%5.2f%%)",
                     $count, $total, 100.0 * $count / $total
                 )
             );
-            $sth->finish;
 
             $sql = <<SQL;
 SELECT COUNT(*)
 FROM albums al
 WHERE (al.last_queued IS NULL OR al.last_queued < CURRENT_TIMESTAMP - (? || ' seconds')::interval)
-UNION
-SELECT COUNT(*)
-FROM albums
 SQL
             $sth = $db->prepare_cached($sql);
             $sth->execute($opt->min_album_interval);
             $count = ($sth->fetchrow_array)[0];
+            $sth->finish;
+
+            $sth = $db->prepare_cached('SELECT COUNT(*) FROM albums');
+            $sth->execute;
             $total = ($sth->fetchrow_array)[0];
+            $sth->finish;
             $log->debug(
                 sprintf(
                     "Number of albums not queued soon: %d out of total %d (%5.2f%%)",
                     $count, $total, 100.0 * $count / $total
                 )
             );
-            $sth->finish;
 
             undef $sth;
         }