#!/usr/bin/env perl

use strict;
use warnings;
use 5.010;

use File::Slurp qw(read_file write_file);
use Travel::Status::DE::HAFAS;

my $json_str = read_file('stations.json');
my $stations = JSON->new->utf8->decode($json_str);
@{$stations} = sort { $a->{name} cmp $b->{name} } @{$stations};

my $ua = LWP::UserAgent->new();
$ua->env_proxy;

for my $station ( @{$stations} ) {
	if ( not $station->{latlong} ) {
		say "Requesting location for $station->{name} ...";
		my $hafas = Travel::Status::DE::HAFAS->new(
			locationSearch => $station->{name},
		);
		if (not scalar $hafas->results) {
			say '    not found';
			next;
		}
		my $result = ($hafas->results)[0];
		if ($result->name ne $station->{name}) {
			say '    name mismatch: got ' . $result->name;
			next;
		}
		$station->{latlong} = [ $result->lat, $result->lon ];
	}
}

my $json_out = JSON->new->utf8->canonical->pretty->encode($stations);
write_file( 'stations.json', $json_out );