NAME
    Map::Tube::NizhnyNovgorod - Interface to the NizhnyNovgorod Metro Map.

SYNOPSIS
     use Map::Tube::NizhnyNovgorod;
     my $obj = Map::Tube::NizhnyNovgorod->new;
     my $routes_ar = $obj->get_all_routes($from, $to);
     my $line = $obj->get_line_by_id($line_id);
     my $line = $obj->get_line_by_name($line_name);
     my $lines_ar = $obj->get_lines;
     my $station = $obj->get_node_by_id($station_id);
     my $station = $obj->get_node_by_name($station_name);
     my $route = $obj->get_shortest_route($from, $to);
     my $stations_ar = $obj->get_stations($line);
     my $metro_name = $obj->name;
     my $xml_file = $obj->xml;

DESCRIPTION
    It currently provides functionality to find the shortest route between
    the two given nodes.

    For more information about NizhnyNovgorod Map, click here
    <https://en.wikipedia.org/wiki/Nizhny_Novgorod_Metro>.

METHODS
    "new()"
             Constructor.

    "get_all_routes($from, $to)" [EXPERIMENTAL]
             Get all routes from station to station.
             Returns reference to array with Map::Tube::Route objects.

    "get_line_by_id($line_id)"
             Get line object defined by id.
             Returns Map::Tube::Line object.

    "get_line_by_name($line_name)"
             Get line object defined by name.
             Returns Map::Tube::Line object.

    "get_lines()"
             Get lines in metro map.
             Returns reference to unsorted array with Map::Tube::Line objects.

    "get_node_by_id($station_id)"
             Get station node by id.
             Returns Map::Tube::Node object.

    "get_node_by_name($station_name)"
             Get station node by name.
             Returns Map::Tube::Node object.

    "get_shortest_route($from, $to)"
             Get shortest route between $from and $to node names. Node names in $from and $to are case insensitive.
             Returns Map::Tube::Route object.

    "get_stations($line)"
             Get list of stations for concrete metro line.
             Returns reference to array with Map::Tube::Node objects.

    "name()"
             Get metro name.
             Returns string with metro name.

    "xml()"
             Get XML specification of Nizhny Novgorod metro.
             Returns string with XML.

EXAMPLE1
     # Pragmas.
     use strict;
     use warnings;

     # Modules.
     use Encode qw(decode_utf8 encode_utf8);
     use Map::Tube::NizhnyNovgorod;

     # Object.
     my $obj = Map::Tube::NizhnyNovgorod->new;

     # Get route.
     my $route = $obj->get_shortest_route(decode_utf8('Буревестник'), decode_utf8('Кировская'));

     # Print out type.
     print "Route: ".encode_utf8($route)."\n";

     # Output:
     # Route: Буревестник (Сормовская линия), Бурнаковская (Сормовская линия), Канавинская (Сормовская линия), Московская (Автозаводская линия,Сормовская линия), Чкаловская (Автозаводская линия), Ленинская (Автозаводская линия), Заречная (Автозаводская линия), Двигатель Революции (Автозаводская линия), Пролетарская (Автозаводская линия), Автозаводская (Автозаводская линия), Комсомольская (Автозаводская линия), Кировская (Автозаводская линия)

EXAMPLE2
     # Pragmas.
     use strict;
     use warnings;

     # Modules.
     use Map::Tube::NizhnyNovgorod;

     # Object.
     my $obj = Map::Tube::NizhnyNovgorod->new;

     # Get XML file.
     my $xml_file = $obj->xml;

     # Print out XML file.
     print "XML file: $xml_file\n";

     # Output like:
     # XML file: .*/nizhny_novgorod-map.xml

EXAMPLE3
     # Pragmas.
     use strict;
     use warnings;

     # Modules.
     use Map::Tube::GraphViz;
     use Map::Tube::GraphViz::Utils qw(node_color_without_label);
     use Map::Tube::NizhnyNovgorod;

     # Object.
     my $obj = Map::Tube::NizhnyNovgorod->new;

     # GraphViz object.
     my $g = Map::Tube::GraphViz->new(
             'callback_node' => \&node_color_without_label,
             'driver' => 'neato',
             'tube' => $obj,
     );

     # Get graph to file.
     $g->graph('NizhnyNovgorod.png');

     # Print file.
     system "ls -l NizhnyNovgorod.png";

     # Output like:
     # -rw-r--r-- 1 skim skim 292500 Dec 21 17:25 NizhnyNovgorod.png

EXAMPLE4
     # Pragmas.
     use strict;
     use warnings;

     # Modules.
     use Encode qw(encode_utf8);
     use Map::Tube::NizhnyNovgorod;

     # Object.
     my $obj = Map::Tube::NizhnyNovgorod->new;

     # Get lines.
     my $lines_ar = $obj->get_lines;

     # Print out.
     map { print encode_utf8($_->name)."\n"; } sort @{$lines_ar};

     # Output:
     # Автозаводская линия
     # Сормовская линия

EXAMPLE5
     # Pragmas.
     use strict;
     use warnings;

     # Modules.
     use Encode qw(decode_utf8 encode_utf8);
     use Map::Tube::NizhnyNovgorod;

     # Arguments.
     if (@ARGV < 1) {
             print STDERR "Usage: $0 line\n";
             exit 1;
     }
     my $line = decode_utf8($ARGV[0]);

     # Object.
     my $obj = Map::Tube::NizhnyNovgorod->new;

     # Get stations for line.
     my $stations_ar = $obj->get_stations($line);

     # Print out.
     map { print encode_utf8($_->name)."\n"; } @{$stations_ar};

     # Output:
     # Usage: __PROG__ line

     # Output with 'foo' argument.
     # Map::Tube::get_stations(): ERROR: Invalid Line Name [foo]. (status: 105) file __PROG__ on line __LINE__

     # Output with 'Сормовская линия' argument.
     # Московская
     # Канавинская
     # Бурнаковская
     # Буревестник

DEPENDENCIES
    File::Share, Map::Tube, Moo, namespace::clean.

SEE ALSO
    Map::Tube
        Core library as Role (Moo) to process map data.

    Task::Map::Tube
        Install the Map::Tube modules.

    Task::Map::Tube::Metro
        Install the Map::Tube concrete metro modules.

REPOSITORY
    <https://github.com/tupinek/Map-Tube-NizhnyNovgorod>

AUTHOR
    Michal Josef Špaček <mailto:skim@cpan.org>

    <http://skim.cz>

LICENSE AND COPYRIGHT
     © 2014-2017 Michal Josef Špaček
     Artistic License
     BSD 2-Clause License

VERSION
    0.04