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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 $col_first = "\e[38;5;11m";
my $col_mixed = "\e[38;5;208m";
my $col_second = "\e[38;5;9m";
my $col_reset = "\e[0m";

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->length_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 );

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 = '<->';
	}

	my $class_color = '';
	if ($wagon->class_type == 1 ) {
		$class_color = $col_first;
	}
	elsif ($wagon->class_type == 2 ) {
		$class_color = $col_second;
	}
	elsif ($wagon->class_type == 12 ) {
		$class_color = $col_mixed;
	}

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