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package DBInfoscreen::Controller::Wagenreihung;
use Mojo::Base 'Mojolicious::Controller';
# Copyright (C) 2011-2019 Daniel Friesel <derf+dbf@finalrewind.org>
# License: 2-Clause BSD
use Encode qw(decode);
use JSON;
use Mojo::Promise;
use Travel::Status::DE::DBWagenreihung;
my $dbf_version = qx{git describe --dirty} || 'experimental';
chomp $dbf_version;
sub get_wagenreihung_p {
my ( $self, $train_no, $api_ts ) = @_;
my $url
= "https://www.apps-bahn.de/wr/wagenreihung/1.0/${train_no}/${api_ts}";
my $cache = $self->app->cache_iris_rt;
my $promise = Mojo::Promise->new;
if ( my $content = $cache->thaw($url) ) {
$promise->resolve($content);
return $promise;
}
$self->ua->request_timeout(10)
->get_p( $url, { 'User-Agent' => "dbf.finalrewind.org/${dbf_version}" } )
->then(
sub {
my ($tx) = @_;
my $body = decode( 'utf-8', $tx->res->body );
my $json = JSON->new->decode($body);
$cache->freeze( $url, $json );
$promise->resolve($json);
}
)->catch(
sub {
my ($err) = @_;
$promise->reject($err);
}
)->wait;
return $promise;
}
sub wagenreihung {
my ($self) = @_;
my $train = $self->stash('train');
my $departure = $self->stash('departure');
$self->render_later;
$self->get_wagenreihung_p( $train, $departure )->then(
sub {
my ($json) = @_;
my $wr;
eval {
$wr
= Travel::Status::DE::DBWagenreihung->new(
from_json => $json );
};
if ($@) {
$self->render(
'wagenreihung',
title => "Zug $train",
wr_error => scalar $@,
train_no => $train,
wr => undef,
hide_opts => 1,
);
}
if ( $wr->has_bad_wagons ) {
# create fake positions as the correct ones are not available
my $pos = 0;
for my $wagon ( $wr->wagons ) {
$wagon->{position}{start_percent} = $pos;
$wagon->{position}{end_percent} = $pos + 4;
$pos += 4;
}
}
$self->render(
'wagenreihung',
wr_error => undef,
title => join( ' / ',
map { $wr->train_type . ' ' . $_ } $wr->train_numbers ),
train_no => $train,
wr => $wr,
hide_opts => 1,
);
}
)->catch(
sub {
my ($err) = @_;
$self->render(
'wagenreihung',
title => "Zug $train",
wr_error => scalar $err,
train_no => $train,
wr => undef,
hide_opts => 1,
);
}
)->wait;
}
1;
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