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|
#!/usr/bin/env perl
use Mojolicious::Lite;
use Cache::File;
use App::VRR::Fakedisplay;
use Travel::Status::DE::VRR;
our $VERSION = '0.00';
sub get_results_for {
my ($city, $stop) = @_;
my $cache = Cache::File->new(
cache_root => '/tmp/vrr-fake',
default_expires => '900 sec',
);
my $results = $cache->thaw("${city} _ ${stop}");
if ( not $results ) {
my $status
= Travel::Status::DE::VRR->new(place => $city, name => $stop);
$results = [ [$status->results], $status->errstr ];
$cache->freeze( "${city} _ ${stop}", $results );
}
return @{$results};
}
sub handle_request {
my $self = shift;
my $city = $self->stash('city');
my $stop = $self->stash('stop');
$self->stash( title => 'vrr-fakedisplay' );
$self->stash( version => $VERSION );
$self->render(
'main',
city => $city,
stop => $stop,
version => $VERSION,
title => "departures for ${city} ${stop}",
);
}
sub render_image {
my $self = shift;
my $city = $self->stash('city');
my $stop = $self->stash('stop');
$self->res->headers->content_type('image/png');
my ($results, $errstr) = get_results_for($city, $stop);
my $png = App::VRR::Fakedisplay->new();
for my $d (@{$results}[0 .. 5]) {
$png->draw_at(0, $d->line);
$png->draw_at(30, $d->destination);
$png->draw_at(180, $d->time);
$png->new_line();
}
$self->render(data => $png->png);
}
get '/_redirect' => sub {
my $self = shift;
my $city = $self->param('city');
my $stop = $self->param('stop');
$self->redirect_to("/${city}/${stop}");
};
get '/' => \&handle_request;
get '/:city/:stop.png' => \&render_image;
get '/:city/:stop' => \&handle_request;
app->start();
__DATA__
@@ main.html.ep
<!DOCTYPE html>
<html>
<head>
<title><%= $title %></title>
<meta charset="utf-8">
<style type="text/css">
div.about {
font-family: Sans-Serif;
color: #666666;
}
div.about a {
color: #000066;
}
</style>
</head>
<body>
% if ($city and $stop) {
<img src="../../<%= $city %>/<%= $stop %>.png" alt=""/>
% }
% else {
<p>
DB-Fakedisplay displays the next departures at a DB station, just like the big
LC display in the station itself.
</p>
% }
<div class="input-field">
<% if (my $error = stash 'error') { %>
<p>
Error: <%= $error %><br/>
</p>
<% } %>
<%= form_for _redirect => begin %>
<p>
Station name:
<%= text_field 'city' %>
<%= text_field 'stop' %>
<%= submit_button 'Display' %>
</p>
<% end %>
</div>
<div class="about">
<a href="http://finalrewind.org/projects/db-fakedisplay/">db-fakedisplay</a>
v<%= $version %>
</div>
</body>
</html>
@@ not_found.html.ep
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>page not found</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
</head>
<body>
<div>
page not found
</div>
</body>
</html>
|
