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#!/usr/bin/env perl
use strict;
use warnings;
use 5.020;
use utf8;

our $VERSION = '0.00';

use List::Util qw(min);
use Travel::Status::DE::IRIS;
use Travel::Status::DE::DBWagenreihung;

my ($station, $train_number) = @ARGV;

my $res = Travel::Status::DE::IRIS->new(station => $station, with_related => 1);

if ($res->errstr) {
	say STDERR $res->errstr;
	exit 1;
}

my @trains = grep { $_->train_no eq $train_number } $res->results;

if (@trains != 1) {
	say STDERR "Unable to find train in reported departures";
	exit 1;
}

my $wr = Travel::Status::DE::DBWagenreihung->new(
	departure => $trains[0]->sched_departure,
	developer_mode => 1,
	train_number => $train_number,
);

for my $section ($wr->sections) {
	my $section_length = $section->{end_percent} - $section->{start_percent};
	my $spacing_left = int(($section_length - 2) / 2) - 1;
	my $spacing_right = int(($section_length - 2) / 2);

	if ($section_length % 2) {
		$spacing_left++;
	}

	printf("|%s%s%s|",
		' ' x $spacing_left,
		$section->{name},
		' ' x $spacing_right
	);
}
print "\n";

my @start_percentages = map { $_->{position}{start_percent} } $wr->wagons;
print ' ' x ((min @start_percentages) - 1);
print '[';

for my $wagon ($wr->wagons) {
	my $wagon_length = $wagon->{position}->{end_percent} - $wagon->{position}->{start_percent};
	my $spacing_left = int($wagon_length / 2) - 2;
	my $spacing_right = int($wagon_length / 2) - 1;

	if ($wagon_length % 2) {
		$spacing_left++;
	}

	my $wagon_desc = $wagon->number || '?';

	if ($wagon->is_locomotive or $wagon->is_powercar) {
		$wagon_desc = '<->';
	}

	printf("%s%3s%s", ' ' x $spacing_left, $wagon_desc, ' ' x $spacing_right);
}
print "]\n";

print ' ' x (min @start_percentages);
for my $wagon ($wr->wagons) {
	my $wagon_length = $wagon->{position}->{end_percent} - $wagon->{position}->{start_percent};
	my $spacing_left = int($wagon_length / 2) - 2;
	my $spacing_right = int($wagon_length / 2) - 1;

	if ($wagon_length % 2) {
		$spacing_left++;
	}

	my $class = '';

	if ($wagon->class_type == 1) {
		$class = ' 1 ';
	}
	elsif ($wagon->class_type == 2) {
		$class = ' 2 ';
	}
	elsif ($wagon->class_type == 12) {
		$class = '1/2';
	}

	printf("%s%3s%s", ' ' x $spacing_left, $class, ' ' x $spacing_right);
}
print "\n";