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Fix/track fallback resolution #81

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Fix/track fallback resolution #81

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89b3af7
fix: use FALLBACK track when primary track has no streaming rights
Feb 21, 2026
ca0af67
docs: explain Deezer FALLBACK mechanism in track resolution comments
Feb 21, 2026
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35 changes: 26 additions & 9 deletions API/Async.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -235,11 +235,19 @@ sub flowTracks {

$self->gwCall( sub {
my ($result, $context) = @_;
my @trackTokens = map { $_->{TRACK_TOKEN} } @{ $result->{results}->{data} };
my @trackIds = map { $_->{SNG_ID} } @{ $result->{results}->{data} };
#$log->error(Data::Dump::dump(\@trackTokens), Data::Dump::dump(\@trackIds));
# When a track has an empty RIGHTS hash it cannot be streamed (error 2002).
# Deezer then provides a FALLBACK entry with a licensed alternative version
# (different SNG_ID/TRACK_TOKEN) and populated RIGHTS - use that instead.
my @trackTokens = map {
my $t = ($_->{RIGHTS} && %{$_->{RIGHTS}}) ? $_ : ($_->{FALLBACK} || $_);
$t->{TRACK_TOKEN};
} @{ $result->{results}->{data} };
my @trackIds = map {
my $t = ($_->{RIGHTS} && %{$_->{RIGHTS}}) ? $_ : ($_->{FALLBACK} || $_);
$t->{SNG_ID};
} @{ $result->{results}->{data} };
return $cb->() unless @trackTokens;

$self->_getProviders( $cb, $context->{license}, $params->{quality}, \@trackTokens, \@trackIds );
}, {
method => 'radio.getUserRadio',
Expand Down Expand Up @@ -717,16 +725,25 @@ sub getTrackUrl {

$self->gwCall( sub {
my ($result, $context) = @_;
my @trackTokens = map { $_->{TRACK_TOKEN} } @{ $result->{results}->{data} };
my @trackIds = map { $_->{SNG_ID} } @{ $result->{results}->{data} };
#$log->error(Data::Dump::dump(\@trackTokens), Data::Dump::dump(\@trackIds));
# When a track has an empty RIGHTS hash it cannot be streamed (error 2002).
# Deezer then provides a FALLBACK entry with a licensed alternative version
# (different SNG_ID/TRACK_TOKEN) and populated RIGHTS - use that instead.
my @trackTokens = map {
my $t = ($_->{RIGHTS} && %{$_->{RIGHTS}}) ? $_ : ($_->{FALLBACK} || $_);
$t->{TRACK_TOKEN};
} @{ $result->{results}->{data} };
my @trackIds = map {
my $t = ($_->{RIGHTS} && %{$_->{RIGHTS}}) ? $_ : ($_->{FALLBACK} || $_);
$t->{SNG_ID};
} @{ $result->{results}->{data} };
main::INFOLOG && $log->is_info && $log->info("Track IDs after fallback resolution: @trackIds");

return $cb->() unless @trackTokens;

$self->_getProviders( $cb, $context->{license}, $params->{quality}, \@trackTokens, \@trackIds );
}, {
}, {
method => 'song.getListData',
}, {
}, {
sng_ids => $ids }
);
}
Expand Down