#!/usr/bin/env perl
use strict;
use warnings;
use 5.010;

no if $] >= 5.018, warnings => "experimental::smartmatch";

our $VERSION = '0.00';

binmode( STDOUT, ':encoding(utf-8)' );

use Getopt::Long qw(:config no_ignore_case);
use List::Util qw(max);
use Travel::Status::DE::ASEAG;

my ( @grep_lines );

GetOptions(
	'h|help'        => sub { show_help(0) },
	'l|line=s@'     => \@grep_lines,
	'V|version'     => \&show_version,

) or show_help(1);

if ( @ARGV != 1 ) {
	show_help(1);
}

# --line=foo,bar support
@grep_lines     = split( qr{,}, join( q{,}, @grep_lines ) );

my ( $stop_name ) = @ARGV;

my $status = Travel::Status::DE::ASEAG->new(
	name => $stop_name,
);

sub show_help {
	my ($code) = @_;

	print "Usage: aseag-m <stop name>\n"
	  . "See also: man aseag-m\n";

	exit $code;
}

sub show_version {
	say "aseag-m version ${VERSION}";

	exit 0;
}

sub display_result {
	my (@lines) = @_;

	my @line_length;

	if ( not @lines ) {
		die("Nothing to show\n");
	}

	for my $i ( 0 .. 2 ) {
		$line_length[$i] = max map { length( $_->[$i] ) } @lines;
	}

	for my $line (@lines) {

		printf(
			join( q{  }, ( map { "%-${_}s" } @line_length ) ) . "\n",
			@{$line}[ 0 .. 2 ]
		);
	}

	return;
}

sub show_results {
	my @output;

	for my $d ( $status->results ) {

		my $dtime    = $d->time;

		if (
			( @grep_lines and not( $d->line ~~ \@grep_lines ) )
		  )
		{
			next;
		}

		push( @output,
			[ $dtime, $d->line, $d->destination ] );
	}

	display_result(@output);

	return;
}

if ( my $err = $status->errstr ) {
	say STDERR "Request error: ${err}";
	exit 2;
}

show_results();

__END__

=head1 NAME

efa-m - Unofficial interface to the efa.vrr.de departure monitor

=head1 SYNOPSIS

B<efa-m> [B<-d> I<date>] [B<-t> I<time>] I<city> [I<type>B<:>]I<name>

=head1 VERSION

version 1.04

=head1 DESCRIPTION

B<efa-m> lists upcoming tram, bus and train departures at the location I<name>
in I<city>.

By default, I<name> refers to a stop, this can be changed by specifying
I<type>.  Supported types are B<address> and B<poi> (point of interest).

=head1 OPTIONS

=over

=item B<-l>, B<--line> I<lines>

Only show departures of I<lines> (comma-separatad list, option may be
repeated)

=item B<-V>, B<--version>

Show version information.

=back

=head1 EXIT STATUS

Zero.

=head1 CONFIGURATION

None.

=head1 DEPENDENCIES

=over

=item * Class::Accessor(3pm)

=item * LWP::UserAgent(3pm)

=back

=head1 BUGS AND LIMITATIONS

Unknown.

=head1 AUTHOR

Copyright (C) 2013 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>

=head1 LICENSE

This program is licensed under the same terms as Perl itself.