use strict;
use warnings;
use DBI;
-use ID3FS::File;
+use ID3FS::AudioFile;
+use Cwd;
our $SCHEMA_VERSION=1;
-
my $dbfile=".id3fs";
sub new
my $self={};
bless($self,$class);
- my($dir, $init, $me)=@_;
- $self->{dbpath}="$dir/$dbfile";
- $self->{me}=$me;
+ $self->{me}=shift;
+ $self->{verbose}=shift;
+ my $init=shift;
+ my $dbpath=shift;
+ $self->{base}=shift;
+ my $fallbackdir=shift;
- my $exists=-f $self->{dbpath};
- die("$me: $self->{dbpath}: not found. use --init to create.\n") if(!$exists && !$init);
- die("$me: --init used but $self->{dbpath} exists.\n") if($exists && $init);
+ $dbpath=$self->find_db($init, $dbpath, $fallbackdir);
+ return undef unless($dbpath);
+ $self->{absbase}=Cwd::abs_path($self->{base});
- $self->{dbh}=DBI->connect("dbi:SQLite:dbname=$self->{dbpath}","","",
+ my $connectstr="dbi:SQLite:dbname=$dbpath";
+ my ($user, $pass)=("", "");
+ if($self->{postgres})
+ {
+ $connectstr="dbi:Pg:dbname=id3fs";
+ $user="ianb";
+ $pass="foo";
+ }
+ my $exists=-f $dbpath;
+ $self->{dbh}=DBI->connect($connectstr, $user, $pass,
{ AutoCommit=>1 } );
unless(defined($self->{dbh}))
{
- die("$me: DB Error: " . $DBI::errstr . "\n");
+ die("$self->{me}: DB Error: " . $DBI::errstr . "\n");
}
- if($init)
+ if($exists)
{
- $self->create();
+ $self->checkschema();
}
else
{
- $self->checkschema();
+ $self->create();
}
-
+ $self->enable_foreign_keys();
return $self;
}
+sub find_db
+{
+ my($self, $init, $dbpath, $fallbackdir)=@_;
+ my $file=undef;
+ my $base=undef;
+ if(defined($dbpath))
+ {
+ $file=$dbpath;
+ }
+ if(defined ($self->{base}))
+ {
+ $file="$self->{base}/$dbfile" unless defined($file);
+ $base=$self->{base};
+ }
+ elsif(defined($fallbackdir) && -d $fallbackdir)
+ {
+ my $path=Cwd::abs_path($fallbackdir);
+ do
+ {
+ $file="$path/$dbfile";
+ $base=$path;
+ $path=~s/(.*)\/.*/$1/;
+ }
+ while(! -f $file && length($path) && -d $path);
+ if(! -f $file)
+ {
+ $file="$fallbackdir/$dbfile";
+ $base=$fallbackdir;
+ }
+ }
+ if(!-f $file && !$init)
+ {
+ print "$self->{me}: db not found at $file\n";
+ return undef;
+ }
+ $self->{base}=$base;
+ return $file;
+}
+
+sub base_dir { return shift->{base}; }
+
sub create
{
my($self,$name)=@_;
{
$self->{dbh}->do($cmd);
}
- $self->cmd("INSERT INTO id3fs (schema_version) VALUES (?)", $SCHEMA_VERSION);
+ if($self->{postgres})
+ {
+ $self->cmd("CREATE SEQUENCE seq");
+ }
+ else
+ {
+ my %indexes=( "idx_files_id" => "files (id)",
+ "idx_fxt_both" => "files_x_tags (files_id, tags_id)",
+ "idx_fxt_files" => "files_x_tags (files_id)",
+ "idx_fxt_tags" => "files_x_tags (tags_id)",
+ "idx_tags_id" => "tags (id)",
+ "idx_tags_name" => "tags (name)");
+ for my $index (keys %indexes)
+ {
+ $self->{dbh}->do("CREATE INDEX $index ON " . $indexes{$index});
+ }
+ }
+ $self->cmd("INSERT INTO id3fs (schema_version, last_update) VALUES (?, ?)",
+ $SCHEMA_VERSION, time());
}
sub checkschema
}
}
+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 $newval;
+}
+
sub cmd_sth
{
my($self, $sql, @params)=@_;
return $sth;
}
+sub tags
+{
+ my($self, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ if(!@constraints) # /
+ {
+ # FIXME: add ALL?
+ my $sql="SELECT DISTINCT name FROM tags WHERE parents_id='';";
+ my $tags=$self->cmd_rows($sql);
+ return(map { $_->[0]; } @$tags);
+ }
+ my @ids=();
+
+ my $sql=("SELECT t2.name FROM (\n" .
+ $self->tags_subselect($path) .
+ ") AS subselect\n" .
+ "INNER JOIN files_x_tags ON subselect.files_id=files_x_tags.files_id\n" .
+ "INNER JOIN tags t2 ON files_x_tags.tags_id=t2.id\n");
+ my @used=$path->used_tags();
+ print "tags(): USED: ", join(", ", @used), "\n";
+ if(@used)
+ {
+ $sql .= "WHERE t2.id NOT IN (";
+ $sql .= join(', ', @used);
+ $sql .= ")\n";
+ }
+ $sql .= "GROUP BY t2.name;";
+ print "SQL: $sql\n";
+ my $result=$self->cmd_rows($sql);
+ my @tagnames=map { $_->[0]; } @$result;
+ print "SUBNAMES: ", join(', ', @tagnames), "\n";
+ return(@tagnames);
+}
+
+sub tag_values
+{
+ my($self, $tagid)=@_;
+ my $sql=("SELECT DISTINCT name FROM tags\n" .
+ "WHERE parents_id=?");
+ my $tags=$self->cmd_rows($sql, $tagid);
+ my @tags=map { $_->[0]; } @$tags;
+ @tags=map { length($_) ? $_ : "NOVALUE"; } @tags;
+ return @tags;
+}
+
+sub artists
+{
+ my($self, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ if(!@constraints) # /ALL
+ {
+ my $sql="SELECT DISTINCT name FROM artists;";
+ my $tags=$self->cmd_rows($sql);
+ return(map { $_->[0]; } @$tags);
+ }
+ my @ids=();
+ my $sql=("SELECT artists.name FROM (\n" .
+ $self->tags_subselect($path) .
+ ") AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN artists ON files.artists_id=artists.id\n" .
+ "GROUP BY artists.name;");
+ print "SQL: $sql\n";
+ my $result=$self->cmd_rows($sql);
+ my @tagnames=map { $_->[0]; } @$result;
+ print "ARTISTS: ", join(', ', @tagnames), "\n";
+ return(@tagnames);
+}
+
+sub albums
+{
+ my($self, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ my @ids=();
+ # FIXME: rework PathElements
+ if(ref($constraints[$#constraints]) eq "ID3FS::PathElement::Artist")
+ {
+ return $self->artist_albums($constraints[$#constraints]->{id}, $path);
+ }
+ my $sql=("SELECT albums.name\n" .
+ "\tFROM (\n" .
+ $self->tags_subselect($path) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN albums ON files.albums_id=albums.id\n" .
+ "GROUP BY albums.name;");
+ print "SQL(ALBUMS): \n$sql\n";
+ my $result=$self->cmd_rows($sql);
+ my @names=map { $_->[0]; } @$result;
+ print "ALBUMS: ", join(', ', @names), "\n";
+ return(@names);
+}
+
+sub artist_albums
+{
+ my($self, $artist_id, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ my $sql=("SELECT albums.name FROM (\n" .
+ $self->tags_subselect($path) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
+ "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
+ "WHERE artists.id=? and albums.name <> ''\n\t" .
+ "GROUP BY albums.name\n");
+ print "ARTIST_ALBUMS SQL: $sql\n";
+ my $result=$self->cmd_rows($sql, $artist_id);
+ my @albums=map { $_->[0]; } @$result;
+ print "ALBUMS: ", join(', ', @albums), "\n";
+ return(@albums);
+}
+
+sub artist_tracks
+{
+ my($self, $artist_id, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ my $sql=("SELECT files.name FROM (\n" .
+ $self->tags_subselect($path) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON subselect.files_id=files.id\n" .
+ "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
+ "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
+ "WHERE artists.id=? AND albums.name=''\n\t" .
+ "GROUP BY files.name\n");
+ print "ARTIST_TRACKS SQL: $sql\n";
+ my $result=$self->cmd_rows($sql, $artist_id);
+ my @names=map { $_->[0]; } @$result;
+ print "ARTISTTRACKS: ", join(', ', @names), "\n";
+ return(@names);
+}
+
+sub album_tracks
+{
+ my($self, $artist_id, $album_id)=@_;
+ my $sql=("SELECT files.name FROM files\n\t" .
+ "INNER JOIN albums ON albums.id=files.albums_id\n\t" .
+ "INNER JOIN artists ON artists.id=files.artists_id\n\t" .
+ "WHERE artists.id=? AND albums.id=?\n\t" .
+ "GROUP BY files.name\n");
+ print "ALBUM_TRACKS SQL($artist_id, $album_id): $sql\n";
+ my $result=$self->cmd_rows($sql, $artist_id, $album_id);
+ my @names=map { $_->[0]; } @$result;
+ print "TRACKS: ", join(', ', @names), "\n";
+ return(@names);
+}
+
+sub tracks
+{
+ my($self, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ # FIXME: rework PathElements
+ if(ref($constraints[$#constraints]) eq "ID3FS::PathElement::Artist")
+ {
+ return $self->artist_tracks($constraints[$#constraints]->{id}, @constraints);
+ }
+ elsif(ref($constraints[$#constraints]) eq "ID3FS::PathElement::Album")
+ {
+ my $artist_id=0;
+ my $artist=$constraints[($#constraints)-1];
+ if(defined($artist) && (ref($artist) eq "ID3FS::PathElement::Artist"))
+ {
+ # should always happen
+ $artist_id=$artist->{id};
+ }
+ return $self->album_tracks($artist_id, $constraints[$#constraints]->{id});
+ }
+
+ my $sql=("SELECT files.name\n" .
+ "\tFROM (\n" .
+ $self->tags_subselect($path) .
+ "\t) AS subselect\n" .
+ "INNER JOIN files ON files.id=subselect.files_id\n" .
+ "GROUP BY files.name;");
+ print "SQL: $sql\n";
+ my $result=$self->cmd_rows($sql);
+ my @names=map { $_->[0]; } @$result;
+ print "TRACKS: ", join(', ', @names), "\n";
+ return(@names);
+}
+
+sub filename
+{
+ my($self, $mountpoint, $path)=@_;
+ my @constraints=@{$path->{elements}};
+ if(ref($constraints[$#constraints]) eq "ID3FS::PathElement::File")
+ {
+ my $id=$constraints[$#constraints]->{id};
+ my $sql=("SELECT paths.name, files.name FROM files\n" .
+ "INNER JOIN paths ON files.paths_id=paths.id\n" .
+ "WHERE files.id=?\n" .
+ "GROUP BY paths.name, files.name");
+ print "FILENAME SQL: $sql\n";
+ my ($path, $name)=$self->cmd_onerow($sql, $id);
+ my $id3fs_path=join('/', map { $_->{name}; } @constraints);
+ return($self->relativise($path, $name, $mountpoint, $id3fs_path));
+ }
+ die("DB::filename: unhandled case\n"); #FIXME
+}
+
+sub tags_subselect
+{
+ my($self, $path)=@_;
+ my $tree=$path->{tagtree};
+ my ($sqlclause, $joinsneeded)=$tree->to_sql();
+ print "SQL($joinsneeded): $sqlclause\n";
+ my $sql="\tSELECT fxt1.files_id FROM files_x_tags fxt1\n";
+ for(my $i=2; $i <= $joinsneeded; $i++)
+ {
+ $sql .= ("\tINNER JOIN files_x_tags fxt$i ON " .
+ "fxt1.files_id=fxt${i}.files_id\n");
+ }
+ $sql .= "\tWHERE $sqlclause\n";
+ $sql .= "\tGROUP BY fxt${joinsneeded}.files_id\n";
+ return $sql;
+}
+
+sub tags_subselect_and_not
+{
+ my($self,@constraints)=@_;
+ my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
+ my @tags=@$tags;
+ my @tags_vals=@$tags_vals;;
+ my $cnt=1;
+ my @andclauses=();
+ my $sql='';
+ for my $tag (@tags)
+ {
+ if($cnt == 1)
+ {
+ $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
+ push(@andclauses, "\t\tfxt${cnt}.tags_id=$tag");
+ }
+ else
+ {
+ $sql .= ("\tLEFT JOIN files_x_tags fxt$cnt ON fxt" .
+ ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
+ push(@andclauses, "\t\tfxt${cnt}.tags_id IS NULL");
+ }
+ print "AND: @andclauses\n";
+ $cnt++;
+ }
+ if(@andclauses)
+ {
+ $sql .= "\tWHERE\n\t\t";
+ $sql .= join(" AND\n\t\t", @andclauses) . "\n";
+ }
+ $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
+ return $sql;
+}
+
+
+sub tags_subselect_and
+{
+ my($self,@constraints)=@_;
+ my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
+ my @tags=@$tags;
+ my @tags_vals=@$tags_vals;;
+ my $cnt=1;
+ my @andclauses=();
+ my $sql='';
+ for my $tag (@tags)
+ {
+ if($cnt == 1)
+ {
+ $sql="\tSELECT fxt" . scalar(@tags) . ".files_id FROM files_x_tags fxt1\n";
+ }
+ else
+ {
+ $sql .= ("\tINNER JOIN files_x_tags fxt$cnt ON fxt" .
+ ($cnt-1) . ".files_id=fxt${cnt}.files_id\n");
+ }
+ push(@andclauses, "\t\tfxt${cnt}.tags_id = $tag");
+ print "AND: @andclauses\n";
+ $cnt++;
+ }
+ if(@andclauses)
+ {
+ $sql .= "\tWHERE\n\t\t";
+ $sql .= join(" AND\n\t\t", @andclauses) . "\n";
+ }
+ $sql .= "\tGROUP BY fxt". scalar(@tags).".files_id\n";
+ return $sql;
+}
+
+sub tags_subselect_or
+{
+ my($self,@constraints)=@_;
+ my ($tags, $tags_vals, $parent)=$self->constraints_tag_list(@constraints);
+ my @tags=@$tags;
+ my @tags_vals=@$tags_vals;;
+
+ my $sql=("\tSELECT files_x_tags.files_id FROM tags t1\n" .
+ "\tINNER JOIN files_x_tags ON t1.id=files_x_tags.tags_id\n");
+ my @orclauses=();
+ my @andclauses=();
+ # FIXME: and / or?
+ if(@tags)
+ {
+ push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
+ push(@andclauses, "( t1.id IN ( " . join(', ', @tags) ." ) )");
+ }
+ for my $pair (@tags_vals)
+ {
+ my($tag, $val)=@$pair;
+ push(@orclauses, "( t1.parents_id=$tag AND t1.id=$val )");
+ }
+# push(@andclauses, "( t1.parents_id=" . (defined($parent) ? $parent : "''") . " )");
+ if(@orclauses)
+ {
+ push(@andclauses, join("\n\t\tOR ", @orclauses));
+ }
+ if(@andclauses)
+ {
+ $sql .= "\tWHERE\n\t\t";
+ $sql .= join("\n\t\tAND ", @andclauses) . "\n";
+ }
+ $sql .= "\tGROUP BY files_x_tags.files_id\n";
+ return $sql;
+}
+
+sub constraints_tag_list
+{
+ my($self, @constraints)=@_;
+ my $lasttag=undef;
+ my @tags=();
+ my @tags_vals=();
+ for my $constraint (@constraints)
+ {
+# print ref($constraint), ": ", $constraint->{name}, "\n";
+ if(ref($constraint) eq "ID3FS::PathElement::Tag")
+ {
+ if(defined($lasttag))
+ {
+# print "TAGVAL\n";
+ push(@tags_vals, [$lasttag, $constraint->{id}]) if defined($constraint->{id});
+ $lasttag=undef;
+ }
+ elsif($self->tag_has_values($constraint->{id}))
+ {
+# print "HASVALUES\n";
+ $lasttag=$constraint->{id} if defined($constraint->{id});
+ }
+ else
+ {
+# print "NOVALUES\n";
+ push(@tags, $constraint->{id}) if(defined($constraint->{id}));
+ }
+ }
+ }
+ unless($self->{postgres})
+ {
+ @tags=map{ "\"$_\""; } @tags;
+ @tags_vals=map( { [ map({ "\"$_\""; } @$_ ) ] } @tags_vals);
+ $lasttag="\"$lasttag\"" if defined($lasttag);
+ }
+ return(\@tags, \@tags_vals, $lasttag);
+}
+
+
+sub relativise
+{
+ my($self, $path, $name, $mountpoint, $id3fs_path)=@_;
+ $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 $result;
+}
+
+sub bare_tags
+{
+ my($self)=@_;
+ my $sql=("SELECT tags.name FROM tags\n" .
+ "WHERE tags.parents_id=''\n" .
+ "GROUP BY tags.name\n");
+ my $result=$self->cmd_rows($sql);
+ my @names=map { $_->[0]; } @$result;
+ return (@names);
+}
+
+sub tags_with_values
+{
+ # FIXME: only shows one level of tag depth
+ 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 $tags;
+}
+
+sub id
+{
+ my($self, $type, $val)=@_;
+ my $sql="SELECT id FROM $type WHERE name=?";
+ my ($id)=$self->cmd_onerow($sql, $val);
+ return($id);
+}
+
sub add
{
my($self,$path)=@_;
- my $file=ID3FS::File->new($path);
+ my $relpath=$path;
+ $relpath =~ s/^\Q$self->{base}\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->album();
-#FIXME
-# my $haspic=$file->haspic();
- my $tags=$file->tags();
- print "$path:\n";
- for my $thing (qw(artist album v1genre year audiotype))
+ 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))
{
- no strict 'refs';
- my $thingval=$file->$thing();
- use strict 'refs';
- print("\t$thing: ", $thingval, "\n") if(defined($thingval));
+ 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, @$tag);
+ }
+
+ if($self->ok($year))
+ {
+ $self->add_tag($file_id, "year", $year);
+ if($year=~/^(\d\d\d)\d$/)
+ {
+ $self->add_tag($file_id, "decade", "${1}0s");
+ }
+ }
+
+ if($self->ok($v1genre))
+ {
+ $self->add_tag($file_id, "v1genre", $v1genre);
+ }
+
+ if($haspic)
+ {
+ $self->add_tag($file_id, "haspic", undef);
}
}
+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 $id=$self->lookup_id($table, $name);
+ unless(defined($id))
+ {
+ my $sql="INSERT INTO $table (";
+ $sql .= "id, " if($self->{postgres});
+ my @fields=qw(name);
+ if(defined($extradata))
+ {
+ push(@fields, sort keys(%$extradata));
+ }
+ $sql .= join(", ", @fields);
+ $sql .=") VALUES (";
+ $sql .=") nextval('seq'), " if($self->{postgres});
+ $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(%$fields));
+}
+
+sub lookup_id
+{
+ my($self, $table, $name)=@_;
+ my($id)=$self->cmd_onerow("SELECT id FROM $table where name=?", $name);
+ return $id;
+}
+
+sub tag_has_values
+{
+ my($self, $id)=@_;
+ my $sql=("SELECT COUNT(*) FROM tags\n\t" .
+ "WHERE tags.parents_id=?\n");
+ my ($rows)=$self->cmd_onerow($sql, $id);
+ return $rows;
+}
+
+sub files_in
+{
+ my ($self, $dir)=@_;
+ $dir=~s/^$self->{base}\/?//;
+ my $sql=("SELECT files.name FROM files\n" .
+ "INNER JOIN paths ON files.paths_id=paths.id\n" .
+ "WHERE paths.name=?\n");
+ my $files=$self->cmd_rows($sql, $dir);
+ return(map { $_->[0]; } @$files);
+}
+
+sub prune_directories
+{
+ my($self)=@_;
+ my $sql=("SELECT name, id FROM paths ORDER BY name\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) && $thing =~ /\S+/);
+}
+
sub cmd
{
my ($self, @args)=@_;
return($sth->fetchrow_array());
}
+sub cmd_rows
+{
+ my ($self, @args)=@_;
+ my $sth=$self->cmd_sth(@args);
+ return $sth->fetchall_arrayref();
+}
+
+sub cmd_id
+{
+ my ($self, @args)=@_;
+ $self->cmd_sth(@args);
+ return($self->last_insert_id());
+}
+
+sub last_insert_id
+{
+ my $self=shift;
+ if($self->{postgres})
+ {
+ return $self->{dbh}->last_insert_id(undef, undef, undef, undef,
+ { sequence => "seq" });
+ }
+ else
+ {
+ return $self->{dbh}->last_insert_id("","","","");
+ }
+}
+
__DATA__
CREATE TABLE id3fs (
- schema_version
+ schema_version INTEGER,
+ last_update
);
-CREATE TABLE files (
+CREATE TABLE paths (
id INTEGER PRIMARY KEY,
- path
+ name text
);
-CREATE TABLE tags (
+CREATE TABLE artists (
id INTEGER PRIMARY KEY,
- name
+ name text
);
-CREATE TABLE tagvalues (
+CREATE TABLE albums (
id INTEGER PRIMARY KEY,
- name
+ name text
);
-CREATE TABLE files_x_tags (
- files_id,
- tags_id
+CREATE TABLE files (
+ id INTEGER PRIMARY KEY,
+ name text,
+ artists_id,
+ albums_id,
+ paths_id,
+ FOREIGN KEY(artists_id) REFERENCES artists(id) ON DELETE CASCADE ON UPDATE CASCADE,
+ FOREIGN KEY(albums_id) REFERENCES albums(id) ON DELETE CASCADE ON UPDATE CASCADE,
+ FOREIGN KEY(paths_id) REFERENCES paths(id) ON DELETE CASCADE ON UPDATE CASCADE
);
-CREATE TABLE tags_x_tagvalues (
- tags_id,
- tagvalues_id
+CREATE TABLE tags (
+ id INTEGER PRIMARY KEY,
+ parents_id INTEGER,
+ name text
+);
+
+CREATE TABLE files_x_tags (
+ files_id INTEGER,
+ tags_id INTEGER,
+ FOREIGN KEY(files_id) REFERENCES files(id) ON DELETE CASCADE ON UPDATE CASCADE,
+ FOREIGN KEY(tags_id) REFERENCES tags(id) ON DELETE CASCADE ON UPDATE CASCADE
);