1 package App::MPD::Feeder;
8 use App::MPD::Feeder::Options;
9 use App::MPD::Feeder::DB;
13 use IO::Async::Signal;
14 use Log::Any qw($log);
17 use Syntax::Keyword::Try;
20 class App::MPD::Feeder {
21 has $cfg_file :reader;
24 has $db_needs_update :writer = 1;
27 use constant DEFAULT_CONFIG_FILE => '/etc/mpd-feeder/mpd-feeder.conf';
30 Getopt::Long::Configure('pass_through');
31 Getopt::Long::GetOptions('cfg|config=s' => \$cfg_file);
32 Getopt::Long::Configure('no_pass_through');
34 $cfg_file //= DEFAULT_CONFIG_FILE if -e DEFAULT_CONFIG_FILE;
38 $db_needs_update = 0 if $opt->skip_db_update;
42 my $new_opt = App::MPD::Feeder::Options->new;
44 $new_opt->parse_config_file($cfg_file) if $cfg_file;
46 $new_opt->parse_command_line;
48 Log::Any::Adapter->set( Stderr => log_level => $new_opt->log_level );
52 $db = App::MPD::Feeder::DB->new( opt => $opt );
58 my %conn = ( auto_connect => 1 );
59 $conn{host} = $opt->mpd_host if $opt->mpd_host;
60 $conn{port} = $opt->mpd_port if $opt->mpd_port;
62 $mpd = Net::Async::MPD->new(%conn);
66 die "Connection to MPD lost";
70 my $int_signal_handler = sub {
71 state $signal_count = 0;
73 $log->debug("Signal received. Stopping loop");
74 $mpd->loop->stop('quit');
76 if ( $signal_count > 1 ) {
77 $log->warn("Another signal received (#$signal_count)");
78 $log->warn("Exiting abruptly");
85 IO::Async::Signal->new(
87 on_receipt => $int_signal_handler,
93 IO::Async::Signal->new(
96 $log->debug("SIGHUP received. Scheduling reload");
97 $mpd->loop->stop('reload');
103 IO::Async::Signal->new(
106 $log->debug("SIGUSR1 received. Dumping configuration to STDERR");
107 my $old = select \*STDERR;
124 method update_db($force = undef) {
125 if (!$db_needs_update and !$force) {
126 $log->debug("Skipping DB update");
130 $log->info('Updating song database');
133 my $rows = $mpd->send('listallinfo')->get;
135 $log->trace('got all songs from MPD');
141 foreach my $entry (@$rows) {
142 next unless exists $entry->{file};
144 $self->db->store_song( $entry->{file},
145 $entry->{AlbumArtist} // $entry->{Artist},
151 my ($total_songs, $total_artists, $total_albums,
152 $new_songs, $new_artists, $new_albums
153 ) = $self->db->finish_update;
156 "Updated data about $song_count songs (including $new_songs new), "
157 . "$total_artists artists (including $new_artists new) "
159 . "and $total_albums albums (including $new_albums new)"
162 $db_needs_update = 0;
166 $self->db->cancel_update;
171 method queue_songs($num = undef, $callback = undef) {
175 $mpd->send('playlist')->on_done(
177 my $present = scalar @{ $_[0] // [] };
179 $log->notice( "Playlist contains $present songs. Wanted: "
180 . $opt->target_queue_length );
181 if ( $present < $opt->target_queue_length ) {
183 $opt->target_queue_length - $present, $callback );
186 $callback->() if $callback;
194 my @list = $self->db->find_suitable_songs($num);
196 die "Found no suitable songs" unless @list;
198 if ( @list < $num ) {
201 'Found only %d suitable songs instead of %d',
207 $log->info("About to add $num songs to the playlist");
210 for my $song (@list) {
211 my $path = $song->{song};
216 $log->debug( "Adding " . join( ', ', map {"«$_»"} @paths ) );
217 # MPD needs raw bytes
218 utf8::encode($_) for @paths;
221 push @commands, [ add => "\"$_\"" ];
224 my $f = $mpd->send( \@commands );
225 $f->on_fail( sub { die @_ } );
228 $self->db->note_song_qeued($_) for @list;
229 $callback->(@_) if $callback;
234 method prepare_to_wait_idle {
235 $log->trace('declaring idle mode');
236 $mpd->send('idle database playlist')->on_done(
240 if ( $result->{changed} eq 'database' ) {
241 $db_needs_update = 1;
242 $self->prepare_to_wait_idle;
244 elsif ( $result->{changed} eq 'playlist' ) {
245 $self->queue_songs( undef,
246 sub { $self->prepare_to_wait_idle } );
251 "Unknown result from idle: " . to_json($result) );
252 $self->prepare_to_wait_idle;
269 $self->queue_songs( undef, sub { $self->prepare_to_wait_idle } );
271 $log->debug("Entering event loop. PID=$$");
273 my $result = $mpd->loop->run;
274 $log->trace( "Got loop result of " . ( $result // 'undef' ) );
276 if ( 'reload' eq $result ) {
277 $log->notice("disconnecting");
280 my @exec = ( $0, '--config', $self->cfg_file, '--skip-db-update' );
281 if ( $log->is_trace ) {
283 . join( ' ', map { /\s/ ? "'$_'" : $_ } @exec ) );
288 if ( 'quit' eq $result ) {
289 $log->trace("quitting because of 'quit' loop result");