summaryrefslogtreecommitdiff
path: root/lib/Travel/Status/DE/HAFAS/Stop.pm
blob: 3f89bd4b6aab972eb4d0270cec391ccaaea47d3b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
package Travel::Status::DE::HAFAS::Stop;

# vim:foldmethod=marker

use strict;
use warnings;
use 5.014;

use parent 'Class::Accessor';

our $VERSION = '6.11';

Travel::Status::DE::HAFAS::Stop->mk_ro_accessors(
	qw(loc
	  rt_arr sched_arr arr arr_delay arr_cancelled prod_arr
	  rt_dep sched_dep dep dep_delay dep_cancelled prod_dep
	  delay direction
	  rt_platform sched_platform platform is_changed_platform
	  is_additional tz_offset
	  load
	)
);

# {{{ Constructor

sub new {
	my ( $obj, %opt ) = @_;

	my $stop         = $opt{stop};
	my $common       = $opt{common};
	my $prodL        = $opt{prodL};
	my $date         = $opt{date};
	my $datetime_ref = $opt{datetime_ref};
	my $hafas        = $opt{hafas};
	my $strp_obj     = $opt{hafas}{strptime_obj};

	my $prod_arr
	  = defined $stop->{aProdX} ? $prodL->[ $stop->{aProdX} ] : undef;
	my $prod_dep
	  = defined $stop->{dProdX} ? $prodL->[ $stop->{dProdX} ] : undef;

	# dIn. / aOut. -> may passengers enter / exit the train?

	my $sched_platform   = $stop->{aPlatfS}  // $stop->{dPlatfS};
	my $rt_platform      = $stop->{aPlatfR}  // $stop->{dPlatfR};
	my $changed_platform = $stop->{aPlatfCh} // $stop->{dPlatfCh};

	my $arr_cancelled = $stop->{aCncl};
	my $dep_cancelled = $stop->{dCncl};
	my $is_additional = $stop->{isAdd};

	my $ref = {
		loc                 => $opt{loc},
		direction           => $stop->{dDirTxt},
		sched_platform      => $sched_platform,
		rt_platform         => $rt_platform,
		is_changed_platform => $changed_platform,
		platform            => $rt_platform // $sched_platform,
		arr_cancelled       => $arr_cancelled,
		dep_cancelled       => $dep_cancelled,
		is_additional       => $is_additional,
		prod_arr            => $prod_arr,
		prod_dep            => $prod_dep,
	};

	bless( $ref, $obj );

	my $sched_arr = $ref->handle_day_change(
		input    => $stop->{aTimeS},
		offset   => $stop->{aTZOffset},
		date     => $date,
		strp_obj => $strp_obj,
		ref      => $datetime_ref
	);

	my $rt_arr = $ref->handle_day_change(
		input    => $stop->{aTimeR},
		offset   => $stop->{aTZOffset},
		date     => $date,
		strp_obj => $strp_obj,
		ref      => $datetime_ref
	);

	my $sched_dep = $ref->handle_day_change(
		input    => $stop->{dTimeS},
		offset   => $stop->{dTZOffset},
		date     => $date,
		strp_obj => $strp_obj,
		ref      => $datetime_ref
	);

	my $rt_dep = $ref->handle_day_change(
		input    => $stop->{dTimeR},
		offset   => $stop->{dTZOffset},
		date     => $date,
		strp_obj => $strp_obj,
		ref      => $datetime_ref
	);

	$ref->{arr_delay}
	  = ( $sched_arr and $rt_arr )
	  ? ( $rt_arr->epoch - $sched_arr->epoch ) / 60
	  : undef;

	$ref->{dep_delay}
	  = ( $sched_dep and $rt_dep )
	  ? ( $rt_dep->epoch - $sched_dep->epoch ) / 60
	  : undef;

	$ref->{delay} = $ref->{dep_delay} // $ref->{arr_delay};

	$ref->{sched_arr} = $sched_arr;
	$ref->{sched_dep} = $sched_dep;
	$ref->{rt_arr}    = $rt_arr;
	$ref->{rt_dep}    = $rt_dep;
	$ref->{arr}       = $rt_arr // $sched_arr;
	$ref->{dep}       = $rt_dep // $sched_dep;

	my @messages;
	for my $msg ( @{ $stop->{msgL} // [] } ) {
		if ( $msg->{type} eq 'REM' and defined $msg->{remX} ) {
			push( @messages,
				$hafas->add_message( $opt{common}{remL}[ $msg->{remX} ] ) );
		}
		elsif ( $msg->{type} eq 'HIM' and defined $msg->{himX} ) {
			push( @messages,
				$hafas->add_message( $opt{common}{himL}[ $msg->{himX} ], 1 ) );
		}
		else {
			say "Unknown message type $msg->{type}";
		}
	}
	$ref->{messages} = \@messages;

	$ref->{load} = {};
	for my $tco_id ( @{ $stop->{dTrnCmpSX}{tcocX} // [] } ) {
		my $tco_kv = $common->{tcocL}[$tco_id];

		# BVG has rRT (real-time?) and r (prognosed?); others only have r
		my $load = $tco_kv->{rRT} // $tco_kv->{r};

		# BVG uses 11 .. 13 rather than 1 .. 4
		if ( defined $load and $load > 10 ) {
			$load -= 10;
		}

		$ref->{load}{ $tco_kv->{c} } = $load;
	}

	return $ref;
}

# }}}

sub handle_day_change {
	my ( $self, %opt ) = @_;
	my $date    = $opt{date};
	my $timestr = $opt{input};
	my $offset  = $opt{offset};

	if ( not defined $timestr ) {
		return;
	}

	if ( length($timestr) == 8 ) {

		# arrival time includes a day offset
		my $offset_date = $opt{ref}->clone;
		$offset_date->add( days => substr( $timestr, 0, 2, q{} ) );
		$offset_date = $offset_date->strftime('%Y%m%d');
		$timestr = $opt{strp_obj}->parse_datetime("${offset_date}T${timestr}");
	}
	else {
		$timestr = $opt{strp_obj}->parse_datetime("${date}T${timestr}");
	}

	if ( defined $offset and $offset != $timestr->offset / 60 ) {
		$self->{tz_offset} = $offset - $timestr->offset / 60;
		$timestr->subtract( minutes => $self->{tz_offset} );
	}

	return $timestr;
}

sub messages {
	my ($self) = @_;

	if ( $self->{messages} ) {
		return @{ $self->{messages} };
	}
	return;
}

sub TO_JSON {
	my ($self) = @_;

	my $ret = { %{$self} };

	for my $k ( keys %{$ret} ) {
		if ( ref( $ret->{$k} ) eq 'DateTime' ) {
			$ret->{$k} = $ret->{$k}->epoch;
		}
	}

	return $ret;
}

1;

__END__

=head1 NAME

Travel::Status::DE::HAFAS::Stop - Information about a HAFAS stop.

=head1 SYNOPSIS

	# in journey mode
	for my $stop ($journey->route) {
		printf(
			%5s -> %5s %s\n",
			$stop->arr ? $stop->arr->strftime('%H:%M') : '--:--',
			$stop->dep ? $stop->dep->strftime('%H:%M') : '--:--',
			$stop->loc->name
		);
	}

=head1 VERSION

version 6.11

=head1 DESCRIPTION

Travel::Status::DE::HAFAS::Stop describes a
Travel::Status::DE::HAFAS::Journey(3pm)'s stop at a given
Travel::Status::DE::HAFAS::Location(3pm) with arrival/departure time,
platform, etc.

All date and time entries refer to the backend time zone (Europe/Berlin in most
cases) and do not take local time into account; see B<tz_offset> for the
latter.

=head1 METHODS

=head2 ACCESSORS

=over

=item $stop->loc

Travel::Status::DE::HAFAS::Location(3pm) instance describing stop name, EVA
ID, et cetera.

=item $stop->rt_arr

DateTime object for actual arrival.

=item $stop->sched_arr

DateTime object for scheduled arrival.

=item $stop->arr

DateTime object for actual or scheduled arrival.

=item $stop->arr_delay

Arrival delay in minutes.

=item $stop->arr_cancelled

Arrival is cancelled.

=item $stop->rt_dep

DateTime object for actual departure.

=item $stop->sched_dep

DateTime object for scheduled departure.

=item $stop->dep

DateTIme object for actual or scheduled departure.

=item $stop->dep_delay

Departure delay in minutes.

=item $stop->dep_cancelled

Departure is cancelled.

=item $stop->tz_offset

Offset between backend time zone (default: Europe/Berlin) and this stop's time
zone in minutes, if any. For instance, if the backend uses UTC+2 (CEST) and the
stop uses UTC+1 (IST), tz_offset is -60. Returns undef if both use the same
time zone (or rather, the same UTC offset).

=item $stop->delay

Departure or arrival delay in minutes.

=item $stop->direction

Direction signage from this stop on, undef if unchanged.

=item $stop->messages

List of Travel::Status::DE::HAFAS::Message(3pm) instances related to this stop.
These typically refer to delay reasons, platform changes, or changes in the
line number / direction heading.

=item $stop->prod_arr

Travel::Status::DE::HAFAS::Product(3pm) instance describing the transit product
(name, type, line number, operator, ...) upon arrival at this stop.

=item $stop->prod_dep

Travel::Status::DE::HAFAS::Product(3pm) instance describing the transit product
(name, type, line number, operator, ...) upon departure from this stop.

=item $stop->rt_platform

Actual platform.

=item $stop->sched_platform

Scheduled platform.

=item $stop->platform

Actual or scheduled platform.

=item $stop->is_changed_platform

True if real-time and scheduled platform disagree.

=item $stop->is_additional

True if the stop is an unscheduled addition to the train's route.

=item $stop->load

Expected utilization / passenger load from this stop on.

=back

=head1 DIAGNOSTICS

None.

=head1 DEPENDENCIES

=over

=item Class::Accessor(3pm)

=back

=head1 BUGS AND LIMITATIONS

None known.

=head1 SEE ALSO

Travel::Status::DE::HAFAS(3pm).

=head1 AUTHOR

Copyright (C) 2023 by Birte Kristina Friesel E<lt>derf@finalrewind.orgE<gt>

=head1 LICENSE

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