+sub analyze
+{
+ my $self=shift;
+ $self->cmd("ANALYZE");
+}
+
+sub enable_foreign_keys
+{
+ my $self=shift;
+ $self->cmd("PRAGMA foreign_keys = ON");
+}
+
+sub last_update
+{
+ my($self, $newval)=@_;
+ if(defined($newval))
+ {
+ $self->cmd("UPDATE id3fs SET last_update=?", $newval);
+ }
+ else
+ {
+ ($newval)=$self->cmd_onerow("SELECT last_update from id3fs");
+ }
+ return $newval;
+}
+
+sub bare_tags
+{
+ my($self)=@_;
+ my $sql=("SELECT tags.name FROM tags\n" .
+ "WHERE tags.parents_id=''\n" .
+ "GROUP BY tags.name\n");
+ my @names=$self->cmd_firstcol($sql);
+ return (@names);
+}
+
+sub tags_with_values
+{
+ my($self)=@_;
+ my $sql=("SELECT p.name, t.name FROM tags t\n" .
+ "INNER JOIN tags p ON t.parents_id=p.id\n" .
+ "GROUP BY p.name, t.name\n");
+# print "SQL: $sql\n";
+ my $result=$self->cmd_rows($sql);
+ my $tags={};
+ for my $pair (@$result)
+ {
+ push(@{$tags->{$pair->[0]}}, $pair->[1]);
+ }
+ return $tags;
+}
+
+sub tag_has_values
+{
+ my($self, $id)=@_;
+ my $sql=("SELECT COUNT(*) FROM tags\n\t" .
+ "WHERE tags.parents_id=?\n");
+ my ($rows)=$self->cmd_onerow($sql, $id);
+ return $rows;
+}
+
+sub relativise
+{
+ my($self, $path, $name, $mountpoint)=@_;
+ my $id3fs_path=$self->{dbpath};
+ $id3fs_path=~s/(.*)\/.*/$1/;
+ my $rpath="$self->{absbase}/$path";
+ my $vpath="$mountpoint/$id3fs_path";
+ my @path=split(/\//,$rpath);
+ my @rel=split(/\//,$vpath);
+ #absolute paths have empty first element due to leading /
+ shift(@path) if($path[0] eq "");
+ shift(@rel) if($rel[0] eq "");
+ if($path[0] ne $rel[0])
+ {
+ #no path in common, return absolute
+ print "FAIL: NO PATHS IN COMMON\n";
+ return $name;
+ }
+ # f: /home/foo/bar/baz.mp3
+ # r: /home/ianb/music/albums
+ while(@path && @rel && ($path[0] eq $rel[0]))
+ {
+ shift(@path);
+ shift(@rel);
+# print "POP ";
+ }
+# print "\n";
+ my $upcount=scalar(@rel);
+ my $result="../" x $upcount;
+ $result .= join("/",@path);
+ $result .= "/$name";
+ return $result;
+}
+
+sub add
+{
+ my($self,$path)=@_;
+ my $relpath=Cwd::abs_path($path);
+ $relpath =~ s/^\Q$self->{absbase}\E\/?//;
+ my($filepart,$pathpart);
+ if($relpath !~ /\//)
+ {
+ $pathpart='';
+ $filepart=$relpath;
+ }
+ else
+ {
+ ($pathpart, $filepart) = ($relpath =~ /(.*)\/(.*)/);
+ }
+ my $file=ID3FS::AudioFile->new($path, $self->{me});
+ return unless(defined($file));
+ my $artist=$file->artist();
+ my $album=$file->album();
+ my $v1genre=$file->v1genre();
+ my $year=$file->year();
+ my $audiotype=$file->audiotype();
+ my @tags=$file->tags();
+ my $haspic=$file->haspic();
+
+ $artist=undef unless($self->ok($artist));
+ print "$self->{me}: $path: no artist tag defined\n" unless(defined($artist));
+ my $artist_id=$self->add_to_table("artists", $artist);
+ my $path_id=$self->add_to_table("paths", $pathpart);
+ $album=undef unless($self->ok($album));
+ if($self->{verbose} && !defined($album))
+ {
+ print "$self->{me}: $path: no album tag defined\n";
+ }
+
+ my $albums_id=$self->add_to_table("albums", $album);
+ my $file_id=$self->add_to_table("files", $filepart,
+ { "artists_id" => $artist_id,
+ "albums_id" => $albums_id,
+ "paths_id" => $path_id });
+ for my $tag (@tags)
+ {
+ $self->add_tag($file_id, @$tag);
+ }
+
+ $year="UNKNOWN" unless($self->ok($year));
+ $self->add_tag($file_id, "year", $year);
+ if($year=~/^(\d\d\d)\d$/)
+ {
+ $self->add_tag($file_id, "decade", "${1}0s");
+ }
+ else
+ {
+ $self->add_tag($file_id, "decade", "UNKNOWN");
+ }
+
+ if($self->ok($v1genre))
+ {
+ $self->add_tag($file_id, "v1genre", $v1genre);
+ }
+
+ if($haspic)
+ {
+ $self->add_tag($file_id, "haspic", undef);
+ }
+
+ if($self->ok($audiotype))
+ {
+ $self->add_tag($file_id, "audiotype", $audiotype);
+ }
+}
+
+sub add_tag
+{
+ my($self, $file_id, $tag, $value)=@_;
+ my $tag_id=$self->add_to_table("tags", $tag,
+ { "parents_id" => undef });
+ $self->add_relation("files_x_tags",
+ { "files_id" => $file_id,
+ "tags_id" => $tag_id });
+ if(defined($value) && length($value))
+ {
+ my $val_id=$self->add_to_table("tags", $value,
+ { "parents_id" => $tag_id });
+ $self->add_relation("files_x_tags",
+ { "files_id" => $file_id,
+ "tags_id" => $val_id });
+ }
+}
+
+sub add_to_table
+{
+ my($self, $table, $name, $extradata)=@_;
+ my $parent=undef;
+ if($extradata && $extradata->{parents_id})
+ {
+ $parent=$extradata->{parents_id};
+ }
+ my $id=$self->lookup_id($table, $name, $parent);
+ unless(defined($id))
+ {
+ my $sql="INSERT INTO $table (";
+ my @fields=qw(name);
+ if(defined($extradata))
+ {
+ push(@fields, sort keys(%$extradata));
+ }
+ $sql .= join(", ", @fields);
+ $sql .=") VALUES (";
+ $sql .= join(", ", map { "?"; } @fields);
+ $sql .= ");";
+ $id=$self->cmd_id($sql, $name, map { $extradata->{$_} || ""; } sort keys %$extradata);
+ }
+ return $id;
+}
+
+sub add_relation
+{
+ my ($self, $relname, $fields)=@_;
+ return if($self->relation_exists($relname, $fields));
+ my $sql="INSERT INTO $relname (";
+ $sql .= join(", ", sort keys(%$fields));
+ $sql .= ") VALUES (";
+ $sql .= join(", ", map { "?"; } sort keys(%$fields));
+ $sql .= ");";
+ $self->cmd($sql, map { $fields->{$_}; } sort keys(%$fields));
+}
+
+sub files_in
+{
+ my ($self, $dir)=@_;
+ my $sql=("SELECT files.name FROM files\n" .
+ "INNER JOIN paths ON files.paths_id=paths.id\n" .
+ "WHERE paths.name=?\n");
+# print "files_in: SQL: $sql\n";
+ return($self->cmd_firstcol($sql, $dir));
+}
+
+sub unindex
+{
+ my($self, $path, $file)=@_;
+ my $sql=("DELETE FROM files WHERE id IN (" .
+ "\tSELECT files.id FROM files\n" .
+ "\tINNER JOIN paths ON paths.id=files.paths_id\n" .
+ "\tWHERE paths.name=? and files.name=? )\n");
+ $self->cmd_rows($sql, $path, $file);
+}
+
+
+sub prune_directories
+{
+ my($self)=@_;
+ my $sql=("SELECT name, id FROM paths\n");
+ my $pathsref=$self->cmd_rows($sql);
+ my @ids=();
+ for my $pathpair (@$pathsref)
+ {
+ my($path, $id)=@$pathpair;
+ my $fullpath="$self->{absbase}/$path";
+ unless(-d $fullpath)
+ {
+ push(@ids, $id)
+ }
+ }
+ $self->prune_paths(@ids);
+ return scalar(@ids);
+}
+
+sub prune_paths
+{
+ my($self, @ids)=@_;
+ return unless(@ids);
+ my $sql=("DELETE FROM files WHERE paths_id IN (\n\t" .
+ join(', ', map { "\"$_\""; } @ids). "\n\t)");
+# print "SQL: \n", $sql, "\n";
+ $self->cmd($sql);
+}
+
+sub remove_unused
+{
+ my($self)=@_;
+ my $sql=<<'EOT';
+ DELETE FROM artists WHERE id IN (
+ SELECT artists.id FROM artists
+ LEFT JOIN files ON files.artists_id=artists.id
+ WHERE files.id IS NULL);
+
+ DELETE FROM albums WHERE id IN (
+ SELECT albums.id FROM albums
+ LEFT JOIN files ON files.albums_id=albums.id
+ WHERE files.id IS NULL);
+
+ DELETE FROM paths WHERE id IN (
+ SELECT paths.id FROM paths
+ LEFT JOIN files ON files.paths_id=paths.id
+ WHERE files.id IS NULL);
+
+ DELETE FROM files_x_tags WHERE files_id IN (
+ SELECT files_x_tags.files_id FROM files_x_tags
+ LEFT JOIN files ON files.id=files_x_tags.files_id
+ WHERE files.id IS NULL);
+
+ DELETE FROM tags WHERE id IN (
+ SELECT tags.id FROM tags
+ LEFT JOIN files_x_tags ON files_x_tags.tags_id=tags.id
+ WHERE files_x_tags.files_id IS NULL);
+
+ VACUUM
+EOT
+# print "SQL: $sql\n";
+ my @sql=split(/\n\n/, $sql);
+ $self->cmd($_) for (@sql);
+}
+
+sub relation_exists
+{
+ my ($self, $relname, $fields)=@_;
+ my $sql="SELECT count(1) FROM $relname WHERE ";
+ my @exprs=();
+ my @vals=();
+ for my $field (keys %$fields)
+ {
+ push(@exprs,$field);
+ push(@vals,$fields->{$field});
+ }
+ $sql .= join(' AND ', map { "$_=?"; } @exprs);
+ my ($ret)=$self->cmd_onerow($sql, @vals);
+ return $ret;
+}
+
+sub ok
+{
+ my($self, $thing)=@_;
+ return(defined($thing) && length($thing) && $thing =~ /\S+/);
+}
+