package Catmandu::Fix::expand;

use Catmandu::Sane;

our $VERSION = '1.0507';

use Moo;
use namespace::clean;
use Catmandu::Expander ();
use Catmandu::Fix::Has;

with 'Catmandu::Fix::Inlineable';

has sep => (fix_opt => 1, default => sub {undef});

sub fix {
    my ($self, $data) = @_;

    if (defined(my $char = $self->sep)) {
        my $new_ref = {};
        for my $key (keys %$data) {
            my $val = $data->{$key};
            $key =~ s{$char}{\.}g;
            $new_ref->{$key} = $val;
        }

        $data = $new_ref;
    }

    Catmandu::Expander->expand_hash($data);
}

1;

__END__

=pod

=head1 NAME

Catmandu::Fix::expand - convert a flat hash into nested data using the TT2 dot convention

=head1 SYNOPSIS

   # collapse the data into a flat hash
   collapse()

   # expand again to the nested original
   expand()

   # optionally provide a path separator
   collapse(-sep => '/')
   expand(-sep => '/')

=head1 SEE ALSO

L<Catmandu::Fix>

=cut