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package DBInfoscreen::Controller::Map;
use Mojo::Base 'Mojolicious::Controller';
use Mojo::JSON qw(decode_json);
use Mojo::Promise;
use Encode qw(decode);
my $dbf_version = qx{git describe --dirty} || 'experimental';
chomp $dbf_version;
sub get_hafas_polyline_p {
my ( $self, $trip_id, $line ) = @_;
my $url
= "https://2.db.transport.rest/trips/${trip_id}?lineName=${line}&polyline=true";
my $cache = $self->app->cache_iris_main;
my $promise = Mojo::Promise->new;
say $url;
if ( my $content = $cache->thaw($url) ) {
$promise->resolve($content);
return $promise;
}
$self->ua->request_timeout(5)
->get_p(
$url => { 'User-Agent' => "dbf.finalrewind.org/${dbf_version}" } )
->then(
sub {
my ($tx) = @_;
my $body = decode( 'utf-8', $tx->res->body );
my $json = decode_json($body);
my @coordinate_list;
for my $feature ( @{ $json->{polyline}{features} } ) {
if ( exists $feature->{geometry}{coordinates} ) {
push( @coordinate_list, $feature->{geometry}{coordinates} );
}
#if ($feature->{type} eq 'Feature') {
# say "Feature " . $feature->{properties}{name};
#}
}
my $ret = {
name => $json->{line}{name} // '?',
polyline => [@coordinate_list],
stopovers => $json->{stopovers},
};
$cache->freeze( $url, $ret );
$promise->resolve($ret);
}
)->catch(
sub {
my ($err) = @_;
$promise->reject($err);
}
)->wait;
return $promise;
}
sub route {
my ($self) = @_;
my $trip_id = $self->stash('tripid');
my $line_no = $self->stash('lineno');
$self->render_later;
$self->get_hafas_polyline_p( $trip_id, $line_no )->then(
sub {
my ($pl) = @_;
my @polyline = @{ $pl->{polyline} };
my @line_pairs;
my @station_coordinates;
for my $i ( 1 .. $#polyline ) {
push(
@line_pairs,
[
[ $polyline[ $i - 1 ][1], $polyline[ $i - 1 ][0] ],
[ $polyline[$i][1], $polyline[$i][0] ]
]
);
}
for my $stop ( @{ $pl->{stopovers} // [] } ) {
push(
@station_coordinates,
[
[
$stop->{stop}{location}{latitude},
$stop->{stop}{location}{longitude}
],
$stop->{stop}{name}
]
);
}
$self->render(
'route_map',
title => $pl->{name},
hide_opts => 1,
with_map => 1,
polyline_groups => [
{
polylines => \@line_pairs,
color => '#00838f',
opacity => 0.6,
fit_bounds => 1,
}
],
station_coordinates => [@station_coordinates],
);
}
)->catch(
sub {
my ($err) = @_;
$self->render(
'route_map',
title => "DBF",
hide_opts => 1,
with_map => 1,
error => $err,
);
}
)->wait;
}
1;
|
