package Travel::Status::DE::DBWagenreihung; use strict; use warnings; use 5.020; use utf8; use parent 'Class::Accessor'; use Carp qw(cluck confess); use JSON; use List::Util qw(uniq); use LWP::UserAgent; use Travel::Status::DE::DBWagenreihung::Section; use Travel::Status::DE::DBWagenreihung::Wagon; our $VERSION = '0.12'; Travel::Status::DE::DBWagenreihung->mk_ro_accessors( qw(platform station train_no train_type)); my %is_redesign = ( "02" => 1, "03" => 1, "06" => 1, "09" => 1, "10" => 1, "13" => 1, "14" => 1, "15" => 1, "16" => 1, "18" => 1, "19" => 1, "20" => 1, "23" => 1, "24" => 1, "27" => 1, "28" => 1, "29" => 1, "31" => 1, "32" => 1, "33" => 1, "34" => 1, "35" => 1, "36" => 1, "37" => 1, "53" => 1 ); my %model_name = ( '011' => [ 'ICE T', 'ÖBB 4011' ], '401' => ['ICE 1'], '402' => ['ICE 2'], '403.S1' => [ 'ICE 3', 'BR 403, 1. Serie' ], '403.S2' => [ 'ICE 3', 'BR 403, 2. Serie' ], '403.R' => [ 'ICE 3', 'BR 403 Redesign' ], '406' => [ 'ICE 3', 'BR 406' ], '406.R' => [ 'ICE 3', 'BR 406 Redesign' ], '407' => [ 'ICE 3 Velaro', 'BR 407' ], '408' => [ 'ICE 3neo', 'BR 408' ], '411.S1' => [ 'ICE T', 'BR 411, 1. Serie' ], '411.S2' => [ 'ICE T', 'BR 411, 2. Serie' ], '412' => ['ICE 4'], '415' => [ 'ICE T', 'BR 415' ], '422' => ['BR 422'], '423' => ['BR 423'], '425' => ['BR 425'], '427' => [ 'FLIRT', 'BR 427' ], '428' => [ 'FLIRT', 'BR 428' ], '429' => [ 'FLIRT', 'BR 429' ], '430' => ['BR 430'], '440' => [ 'Coradia Continental', 'BR 440' ], '442' => [ 'Talent 2', 'BR 442' ], '445' => [ 'Twindexx Vario', 'BR 445' ], '446' => [ 'Twindexx Vario', 'BR 446' ], '462' => [ 'Desiro HC', 'BR 462' ], '463' => [ 'Mireo', 'BR 463' ], '475' => [ 'TGV', 'BR 475' ], '612' => [ 'RegioSwinger', 'BR 612' ], '620' => [ 'LINT 81', 'BR 620' ], '622' => [ 'LINT 54', 'BR 622' ], '631' => [ 'Link I', 'BR 631' ], '632' => [ 'Link II', 'BR 632' ], '633' => [ 'Link III', 'BR 633' ], '640' => [ 'LINT 27', 'BR 640' ], '642' => [ 'Desiro Classic', 'BR 642' ], '643' => [ 'TALENT', 'BR 643' ], '648' => [ 'LINT 41', 'BR 648' ], 'IC2.TWIN' => ['IC 2 Twindexx'], 'IC2.KISS' => ['IC 2 KISS'], ); my %power_desc = ( 90 => 'mit sonstigem Antrieb', 91 => 'mit elektrischer Lokomotive', 92 => 'mit Diesellokomotive', 93 => 'Hochgeschwindigkeitszug', 94 => 'Elektrischer Triebzug', 95 => 'Diesel-Triebzug', 96 => 'mit speziellen Beiwagen', 97 => 'mit elektrischer Rangierlok', 98 => 'mit Diesel-Rangierlok', 99 => 'Sonderfahrzeug', ); sub new { my ( $class, %opt ) = @_; if ( not $opt{train_number} and not $opt{from_json} ) { confess('train_number option must be set'); } if ( not $opt{departure} and not $opt{from_json} ) { confess('departure option must be set'); } my $self = { api_base => $opt{api_base} // 'https://ist-wr.noncd.db.de/wagenreihung/1.0', developer_mode => $opt{developer_mode}, cache => $opt{cache}, departure => $opt{departure}, from_json => $opt{from_json}, json => JSON->new, train_number => $opt{train_number}, user_agent => $opt{user_agent}, }; bless( $self, $class ); if ( not $self->{user_agent} ) { my %lwp_options = %{ $opt{lwp_options} // { timeout => 10 } }; $self->{user_agent} = LWP::UserAgent->new(%lwp_options); $self->{user_agent}->env_proxy; } $self->get_wagonorder; return $self; } sub get_wagonorder { my ($self) = @_; my $api_base = $self->{api_base}; my $cache = $self->{cache}; my $train_number = $self->{train_number}; my $datetime = $self->{departure}; if ( ref($datetime) eq 'DateTime' ) { $datetime = $datetime->strftime('%Y%m%d%H%M'); } my $json = $self->{from_json}; if ( not $json ) { my ( $content, $err ) = $self->get_with_cache( $cache, "${api_base}/${train_number}/${datetime}" ); if ($err) { $self->{errstr} = "Failed to fetch station data: $err"; return; } $json = $self->{json}->utf8->decode($content); } if ( exists $json->{error} ) { $self->{errstr} = 'Backend error: ' . $json->{error}{msg}; return; } if ( @{ $json->{data}{istformation}{allFahrzeuggruppe} // [] } == 0 and @{ $json->{data}{istformation}{halt} // [] } == 0 ) { $self->{errstr} = 'No wagon order available'; return; } $self->{data} = $json->{data}; $self->{meta} = $json->{meta}; return $self->parse_wagonorder; } sub parse_wagonorder { my ($self) = @_; $self->{platform} = $self->{data}{istformation}{halt}{gleisbezeichnung}; $self->{station} = { ds100 => $self->{data}{istformation}{halt}{rl100}, eva => $self->{data}{istformation}{halt}{evanummer}, name => $self->{data}{istformation}{halt}{bahnhofsname}, }; $self->{train_type} = $self->{data}{istformation}{zuggattung}; $self->{train_no} = $self->{data}{istformation}{zugnummer}; } sub errstr { my ($self) = @_; return $self->{errstr}; } sub TO_JSON { my ($self) = @_; # ensure that all objects are available $self->direction; $self->origins; $self->destinations; $self->train_numbers; $self->train_descriptions; $self->sections; $self->wagons; my %copy = %{$self}; delete $copy{from_json}; return {%copy}; } sub direction { my ($self) = @_; if ( not exists $self->{direction} ) { # direction is set while parsing wagons $self->wagons; } return $self->{direction}; } sub has_bad_wagons { my ($self) = @_; if ( defined $self->{has_bad_wagons} ) { return $self->{has_bad_wagons}; } for my $group ( @{ $self->{data}{istformation}{allFahrzeuggruppe} } ) { for my $wagon ( @{ $group->{allFahrzeug} } ) { my $pos = $wagon->{positionamhalt}; if ( $pos->{startprozent} eq '' or $pos->{endeprozent} eq '' or $pos->{startmeter} eq '' or $pos->{endemeter} eq '' ) { return $self->{has_bad_wagons} = 1; } } } return $self->{has_bad_wagons} = 0; } sub origins { my ($self) = @_; if ( exists $self->{origins} ) { return @{ $self->{origins} }; } my @origins; for my $group ( @{ $self->{data}{istformation}{allFahrzeuggruppe} } ) { push( @origins, $group->{startbetriebsstellename} ); } @origins = uniq @origins; $self->{origins} = \@origins; return @origins; } sub destinations { my ($self) = @_; if ( exists $self->{destinations} ) { return @{ $self->{destinations} }; } my @destinations; my %section; for my $group ( @{ $self->{data}{istformation}{allFahrzeuggruppe} } ) { my $destination = $group->{zielbetriebsstellename}; my @sections = map { $_->{fahrzeugsektor} } @{ $group->{allFahrzeug} }; push( @{ $section{$destination} }, @sections ); push( @destinations, $destination ); } @destinations = uniq @destinations; @destinations = map { { name => $_, sections => [ uniq @{ $section{$_} } ] } } @destinations; $self->{destinations} = \@destinations; return @destinations; } sub sections { my ($self) = @_; if ( exists $self->{sections} ) { return @{ $self->{sections} }; } for my $section ( @{ $self->{data}{istformation}{halt}{allSektor} } ) { my $pos = $section->{positionamgleis}; if ( $pos->{startprozent} eq '' or $pos->{endeprozent} eq '' ) { next; } push( @{ $self->{sections} }, Travel::Status::DE::DBWagenreihung::Section->new( name => $section->{sektorbezeichnung}, start_percent => $pos->{startprozent}, end_percent => $pos->{endeprozent}, start_meters => $pos->{startmeter}, end_meters => $pos->{endemeter}, ) ); } return @{ $self->{sections} // [] }; } sub train_numbers { my ($self) = @_; if ( exists $self->{train_numbers} ) { return @{ $self->{train_numbers} }; } my @numbers; for my $group ( @{ $self->{data}{istformation}{allFahrzeuggruppe} } ) { push( @numbers, $group->{verkehrlichezugnummer} ); } @numbers = uniq @numbers; $self->{train_numbers} = \@numbers; return @numbers; } sub wagongroup_powertype { my ( $self, @wagons ) = @_; if ( not @wagons ) { @wagons = $self->wagons; } my %ml = map { $_ => 0 } ( 90 .. 99 ); for my $wagon (@wagons) { if ( not $wagon->uic_id or length( $wagon->uic_id ) != 12 ) { next; } my $wagon_type = substr( $wagon->uic_id, 0, 2 ); if ( $wagon_type < 90 ) { next; } $ml{$wagon_type}++; } my @likelihood = reverse sort { $ml{$a} <=> $ml{$b} } keys %ml; if ( $ml{ $likelihood[0] } == 0 ) { return undef; } return $likelihood[0]; } sub train_descriptions { my ($self) = @_; if ( exists $self->{train_descriptions} ) { return @{ $self->{train_descriptions} }; } if ( not exists $self->{wagons} ) { # wagongroups are set while parsong wagons $self->wagons; } for my $wagons ( @{ $self->{wagongroups} } ) { my ( $short, $desc ) = $self->wagongroup_description( @{$wagons} ); my @sections = uniq map { $_->section } @{$wagons}; push( @{ $self->{train_descriptions} }, { sections => [@sections], short => $short, text => $desc, } ); } return @{ $self->{train_descriptions} }; } sub wagongroup_description { my ( $self, @wagons ) = @_; my $powertype = $self->wagongroup_powertype(@wagons); my @model = $self->wagongroup_model(@wagons); my $short; my $ret = q{}; if (@model) { $short = $model[0]; $ret .= $model[0]; } if ( $powertype and $power_desc{$powertype} ) { if ( not $ret and $power_desc{$powertype} =~ m{^mit} ) { $ret = "Zug"; } $ret .= " $power_desc{$powertype}"; $short //= $ret; $short =~ s{elektrischer }{E-}; $short =~ s{[Ll]\Kokomotive}{ok}; } if ( @model > 1 ) { $ret .= " ($model[1])"; } return ( $short, $ret ); } sub wagongroup_model { my ( $self, @wagons ) = @_; my $subtype = $self->wagongroup_subtype(@wagons); if ( $subtype and $model_name{$subtype} ) { return @{ $model_name{$subtype} }; } if ($subtype) { return $subtype; } return; } sub wagongroup_subtype { my ( $self, @wagons ) = @_; if ( not @wagons ) { @wagons = $self->wagons; } my %ml = ( '011' => 0, '401' => 0, '402' => 0, '403.S1' => 0, '403.S2' => 0, '403.R' => 0, '406' => 0, '407' => 0, '408' => 0, '411.S1' => 0, '411.S2' => 0, '412' => 0, '415' => 0, '422' => 0, '423' => 0, '425' => 0, '427' => 0, '428' => 0, '429' => 0, '430' => 0, '440' => 0, '442' => 0, '445' => 0, '446' => 0, '462' => 0, '463' => 0, '475' => 0, '612' => 0, '620' => 0, '622' => 0, '631' => 0, '632' => 0, '633' => 0, '640' => 0, '642' => 0, '643' => 0, '648' => 0, 'IC2.TWIN' => 0, 'IC2.KISS' => 0, ); for my $wagon (@wagons) { if ( not $wagon->model ) { next; } if ( $wagon->model == 401 or ( $wagon->model >= 801 and $wagon->model <= 804 ) ) { $ml{'401'}++; } elsif ( $wagon->model == 402 or ( $wagon->model >= 805 and $wagon->model <= 808 ) ) { $ml{'402'}++; } elsif ( $wagon->model == 403 and $is_redesign{ substr( $wagon->uic_id, 9, 2 ) } ) { $ml{'403.R'}++; } elsif ( $wagon->model == 403 and substr( $wagon->uic_id, 9, 2 ) <= 37 ) { $ml{'403.S1'}++; } elsif ( $wagon->model == 403 and substr( $wagon->uic_id, 9, 2 ) > 37 ) { $ml{'403.S2'}++; } elsif ( $wagon->model == 406 ) { $ml{'406'}++; } elsif ( $wagon->model == 407 ) { $ml{'407'}++; } elsif ( $wagon->model == 408 ) { $ml{'408'}++; } elsif ( $wagon->model == 412 or $wagon->model == 812 ) { $ml{'412'}++; } elsif ( $wagon->model == 411 and substr( $wagon->uic_id, 9, 2 ) <= 32 ) { $ml{'411.S1'}++; } elsif ( $wagon->model == 411 and substr( $wagon->uic_id, 9, 2 ) > 32 ) { $ml{'411.S2'}++; } elsif ( $wagon->model == 415 ) { $ml{'415'}++; } elsif ( $wagon->model == 422 or $wagon->model == 432 ) { $ml{'422'}++; } elsif ( $wagon->model == 423 or $wagon->model == 433 ) { $ml{'423'}++; } elsif ( $wagon->model == 425 or $wagon->model == 435 ) { $ml{'425'}++; } elsif ( $wagon->model == 427 or $wagon->model == 827 ) { $ml{'427'}++; } elsif ( $wagon->model == 428 or $wagon->model == 828 ) { $ml{'428'}++; } elsif ( $wagon->model == 429 or $wagon->model == 829 ) { $ml{'429'}++; } elsif ( $wagon->model == 430 or $wagon->model == 431 ) { $ml{'430'}++; } elsif ($wagon->model == 440 or $wagon->model == 441 or $wagon->model == 841 ) { $ml{'440'}++; } elsif ($wagon->model == 442 or $wagon->model == 443 ) { $ml{'442'}++; } elsif ($wagon->model == 462 or $wagon->model == 862 ) { $ml{'462'}++; } elsif ($wagon->model == 463 or $wagon->model == 863 ) { $ml{'463'}++; } elsif ( $wagon->model == 445 ) { $ml{'445'}++; } elsif ( $wagon->model == 446 ) { $ml{'446'}++; } elsif ( $wagon->model == 475 ) { $ml{'475'}++; } elsif ( $wagon->model == 612 ) { $ml{'612'}++; } elsif ( $wagon->model == 620 or $wagon->model == 621 ) { $ml{'620'}++; } elsif ( $wagon->model == 622 ) { $ml{'622'}++; } elsif ( $wagon->model == 631 ) { $ml{'631'}++; } elsif ( $wagon->model == 632 ) { $ml{'632'}++; } elsif ( $wagon->model == 633 ) { $ml{'633'}++; } elsif ( $wagon->model == 640 ) { $ml{'640'}++; } elsif ( $wagon->model == 642 ) { $ml{'642'}++; } elsif ( $wagon->model == 643 or $wagon->model == 943 ) { $ml{'643'}++; } elsif ( $wagon->model == 648 ) { $ml{'648'}++; } elsif ( $self->train_type eq 'IC' and $wagon->model == 110 ) { $ml{'IC2.KISS'}++; } elsif ( $self->train_type eq 'IC' and $wagon->is_dosto ) { $ml{'IC2.TWIN'}++; } elsif ( substr( $wagon->uic_id, 4, 4 ) eq '4011' ) { $ml{'011'}++; } } my @likelihood = reverse sort { $ml{$a} <=> $ml{$b} } keys %ml; # Less than two wagons are generally inconclusive. # Exception: BR 631 (Link I) only has a single wagon if ( $ml{ $likelihood[0] } < 2 and $likelihood[0] ne '631' ) { return undef; } return $likelihood[0]; } sub wagons { my ($self) = @_; if ( exists $self->{wagons} ) { return @{ $self->{wagons} }; } my @wagon_groups; for my $group ( @{ $self->{data}{istformation}{allFahrzeuggruppe} } ) { my @group; for my $wagon ( @{ $group->{allFahrzeug} } ) { my $wagon_object = Travel::Status::DE::DBWagenreihung::Wagon->new( %{$wagon}, train_no => $group->{verkehrlichezugnummer} ); push( @{ $self->{wagons} }, $wagon_object ); push( @group, $wagon_object ); if ( not $wagon_object->{position}{valid} ) { $self->{has_bad_wagons} = 1; } } push( @wagon_groups, [@group] ); } if ( @{ $self->{wagons} // [] } > 1 and not $self->has_bad_wagons ) { if ( $self->{wagons}[0]->{position}{start_percent} > $self->{wagons}[-1]->{position}{start_percent} ) { $self->{direction} = 100; } else { $self->{direction} = 0; } } if ( not $self->has_bad_wagons ) { @{ $self->{wagons} } = sort { $a->{position}->{start_percent} <=> $b->{position}->{start_percent} } @{ $self->{wagons} }; } for my $i ( 0 .. $#wagon_groups ) { my $group = $wagon_groups[$i]; my $tt = $self->wagongroup_subtype( @{$group} ); if ($tt) { for my $wagon ( @{$group} ) { $wagon->set_traintype( $i, $tt ); } } } $self->{wagongroups} = [@wagon_groups]; return @{ $self->{wagons} // [] }; } sub get_with_cache { my ( $self, $cache, $url ) = @_; if ( $self->{developer_mode} ) { say "GET $url"; } if ($cache) { my $content = $cache->thaw($url); if ($content) { if ( $self->{developer_mode} ) { say ' cache hit'; } return ( ${$content}, undef ); } } if ( $self->{developer_mode} ) { say ' cache miss'; } my $ua = $self->{user_agent}; my $res = $ua->get($url); if ( $res->is_error ) { return ( undef, $res->status_line ); } my $content = $res->decoded_content; if ($cache) { $cache->freeze( $url, \$content ); } return ( $content, undef ); } 1; __END__ =head1 NAME Travel::Status::DE::DBWagenreihung - Interface to Deutsche Bahn Wagon Order API. =head1 SYNOPSIS use Travel::Status::DE::DBWagenreihung; my $wr = Travel::Status::DE::DBWagenreihung->new( departure => 'DateTime or YYYYMMDDhhmm', train_number => 1234, ); for my $wagon ( $wr->wagons ) { printf("Wagen %s: Abschnitt %s\n", $wagon->number // '?', $wagon->section); } =head1 VERSION version 0.12 This is beta software. The API may change without notice. =head1 DESCRIPTION Travel:Status:DE::DBWagenreihung is an unofficial interface to the Deutsche Bahn Wagon Order API at L. It returns station-specific wagon orders for long-distance trains operated by Deutsche Bahn. Data includes wagon positions on the platform, the ICE series, wagon-specific attributes such as first/second class or family coaches, and the internal type and number of each wagon. Positions on the platform are given both in meters and per cent (relative to platform length). At the time of this writing, only ICE trains are officially supported by the backend, and even then glitches may occur. IC/EC trains are not officially supported; reported wagon orders may be correct, may lack unscheduled changes, or may be completely bogus. =head1 METHODS =over =item my $wr = Travel::Status::DE::DBWagenreihung->new(I<%opts>) Requests wagon order for a specific train at a specific scheduled departure time and date, which implicitly encodes the requested station. Use L or similar to map station name and train number to scheduled departure. Arguments: =over =item B => I | I Scheduled departure at the station of interested. Must be either a L object or a string in YYYYMMDDhhmm format. Mandatory. =item B => I Train number. Do not include the train type: Use "8" for "EC 8" or "100" for "ICE 100". =back =item $wr->destinations Returns a list describing all final destinations of this train. In most cases, it contains one element, however, for trains consisting of multiple wings, it contains one element for each wing. Each destination is a hash ref containing the destination B and the corresponding platform I (at the moment, this is a list of section identifiers). This function is subject to change. =item $wr->direction Gives the train's direction of travel. Returns 0 if the train will depart towards position 0 and 100 if the train will depart towards the other platform end (mnemonic: towards the 100% position). =item $wr->errstr In case of a fatal HTTP or backend error, returns a string describing it. Returns undef otherwise. =item $wr->origins Returns a list of stations this train originates from. In most cases, this is just one element; however, for trains consisting of multiple wings, it gives the origin of each wing unless they are identical. Each origin is a station name. This function is subject to change. =item $wr->platform Returns the platform name. =item $wr->sections Describes the sections of the platform this train will depart from. Returns a list of L objects. =item $wr->station Returns a hashref describing the requested station. The hashref contains three entries: B (DS100 / Ril100 identifier), B (EVA ID, related to but not necessarily identical with UIC station ID), and B (station name). =item $wr->train_descriptions Returns a list of hashes describing the rolling stock used for this train based on model and locomotive (if present). Each hash contains the keys B (textual representation, see C<< $wr->train_desc >>) and B (arrayref of corresponding sections). =item $wr->wagongroup_description Returns two strings describing the rolling stock used for this train based on model and locomotive (if present). The first one tries to be conscise (e.g. "ICE 4"). The second is more detailed, e.g. "ICE 4 Hochgeschwindigkeitszug", "IC 2 Twindexx mit elektrischer Lokomotive", or "Diesel-Triebzug". =item $wr->wagongroup_model Returns a string describing the rolling stock used for this train, e.g. "ICE 4" or "IC2 KISS". =item $wr->train_numbers Returns the list of train numbers for this departure. In most cases, this is just one element. For trains consisting of multiple wings (which typically have different numbers), it contains one element for each wing. =item $wr->train_type Returns a string describing the train type, e.g. "ICE" or "IC". =item $wr->wagongroup_subtype Returns a string describing the rolling stock model used for this train, e.g. "412" (model 412 aka ICE 4) or "411.S2" (model 411 aka ICE T, series 2). =item $wr->wagons Describes the individual wagons the train consists of. Returns a list of L objects. =back =head1 DEPENDENCIES =over =item * L =item * L =back =head1 BUGS AND LIMITATIONS Many. This is beta software. =head1 REPOSITORY L =head1 AUTHOR Copyright (C) 2018-2019 by Birte Kristina Friesel Ederf@finalrewind.orgE =head1 LICENSE This module is licensed under the same terms as Perl itself.