From 7eda6144f679c503a30563157c9bb22f53704828 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sat, 29 Oct 2011 11:59:45 +0200
Subject: Show duration

---
 cgi/index.pl               | 60 ++++++++++++++++++++++++++++++++++++++++++----
 lib/App/VRR/Fakedisplay.pm | 28 +++++++++++++++-------
 2 files changed, 74 insertions(+), 14 deletions(-)

diff --git a/cgi/index.pl b/cgi/index.pl
index 90ef4db..2c64482 100644
--- a/cgi/index.pl
+++ b/cgi/index.pl
@@ -2,6 +2,9 @@
 use Mojolicious::Lite;
 use Cache::File;
 
+use DateTime;
+use DateTime::Format::DateParse;
+
 use App::VRR::Fakedisplay;
 use Travel::Status::DE::VRR;
 
@@ -49,15 +52,62 @@ sub render_image {
 	my $city = $self->stash('city');
 	my $stop = $self->stash('stop');
 
+	my $dt_now = DateTime->now(time_zone => 'Europe/Berlin');
+
 	$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);
+	my $png = App::VRR::Fakedisplay->new(width => 180, height => 50);
+	for my $d (@{$results}) {
+
+		my $line = $d->line;
+		my $platform = (split(qr{ }, $d->platform))[-1];
+		my $destination = $d->destination;
+		my $time = $d->time;
+		my $etr;
+
+		my $dt_dep = DateTime::Format::DateParse->parse_datetime($time, 'floating');
+		my $dt;
+
+		if ($time =~ m{ ^ \d\d? : \d\d $ }x) {
+			$dt = DateTime->new(
+				year => $dt_now->year,
+				month => $dt_now->month,
+				day => $dt_now->day,
+				hour => $dt_dep->hour,
+				minute => $dt_dep->minute,
+				second => $dt_dep->second,
+				time_zone => 'Europe/Berlin',
+			);
+		}
+		else {
+			$dt = $dt_dep;
+		}
+
+		my $duration = $dt->subtract_datetime($dt_now);
+
+		if ($duration->is_negative) {
+			next;
+		}
+		elsif ($duration->in_units('minutes') == 0) {
+			$etr = 'sofort';
+		}
+		elsif ($duration->in_units('hours') == 0) {
+			$etr = sprintf(
+				' %2dmin',
+				$duration->in_units('minutes'),
+			);
+		}
+		else {
+			last;
+		}
+
+		$destination =~ s{  $city \s }{}ix;
+
+		$png->draw_at(0, $line);
+		$png->draw_at(25, $destination);
+		$png->draw_at(145, $etr);
 		$png->new_line();
 	}
 
diff --git a/lib/App/VRR/Fakedisplay.pm b/lib/App/VRR/Fakedisplay.pm
index 3912560..782f7ca 100644
--- a/lib/App/VRR/Fakedisplay.pm
+++ b/lib/App/VRR/Fakedisplay.pm
@@ -3,6 +3,7 @@ package App::VRR::Fakedisplay;
 use strict;
 use warnings;
 use 5.010;
+use utf8;
 
 use File::ShareDir qw(dist_file);
 use GD;
@@ -10,12 +11,12 @@ use GD;
 our $VERSION = '0.00';
 
 sub new {
-	my ( $class, %opts ) = @_;
+	my ( $class, %opt ) = @_;
 
 	my $self = {
 		font_file => dist_file( 'App-VRR-Fakedisplay', 'font.png' ),
-		width => 300,
-		height => 50,
+		width => $opt{width} || 140,
+		height => $opt{height} || 40,
 		scale => 10,
 		offset_x => 0,
 		offset_y => 0,
@@ -44,6 +45,10 @@ sub locate_char {
 		when (/[A-Z]/) { $y =  0; $x = (ord($char) - 65) * 10 }
 		when (/[0-9]/) { $y = 20; $x = (ord($char) - 48) * 10 }
 
+		when (q{ä}) { $y = 40; $x =  0 }
+		when (q{ö}) { $y = 40; $x = 10 }
+		when (q{ü}) { $y = 40; $x = 20 }
+
 		when (q{ }) { $y = 90; $x =   0 }
 		when (q{:}) { $y = 30; $x =   0 }
 		when (q{-}) { $y = 30; $x =  10 }
@@ -53,9 +58,9 @@ sub locate_char {
 
 	given ($char) {
 		when (/[WwMm]/) { $w = 8 }
-		when (/[BDEt]/) { $w = 5 }
-		when (/[il]/) { $w = 4 }
-		when (/[:.,]/) { $w = 3 }
+		when (/[BDErt ]/) { $w = 5 }
+		when (/[il1:]/) { $w = 4 }
+		when (/[.,]/) { $w = 3 }
 	}
 
 	return ($x, $y, $w, $h);
@@ -72,20 +77,25 @@ sub draw_at {
 
 	my $font_idx = $self->{font_idx};
 
+	my $scale = $self->{scale};
+
 	my ($off_x, $off_y) = ($offset_x, $self->{offset_y});
 
+	if ($off_y >= $self->{height} or $off_x >= $self->{width}) {
+		return;
+	}
+
 	for my $char (split(qr{}, $text)) {
 		my ($x, $y, $w, $h) = $self->locate_char($char);
 		for my $pos_x ( $x .. ($x + $w) ) {
 			for my $pos_y ( $y .. ($y + $h)) {
 				if ($font->getPixel($pos_x, $pos_y) == $font_idx) {
 					$im->filledEllipse(
-						($off_x + $pos_x - $x) * 10, ($off_y + $pos_y - $y) * 10,
-						10, 10,
+						($off_x + $pos_x - $x) * $scale, ($off_y + $pos_y - $y) * $scale,
+						$scale, $scale,
 						$c_fg
 					);
 				}
-				say "";
 			}
 		}
 		$off_x += $w;
-- 
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