summaryrefslogtreecommitdiff
path: root/lib/Travel/Status/DE/HAFAS/Journey.pm
blob: 25c275d389f20fd911962f20731504c736fe6326 (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
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
package Travel::Status::DE::HAFAS::Journey;

# vim:foldmethod=marker

use strict;
use warnings;
use 5.014;

use parent 'Class::Accessor';
use DateTime::Format::Strptime;
use List::Util qw(any uniq);
use Travel::Status::DE::HAFAS::Stop;

our $VERSION = '6.09';

Travel::Status::DE::HAFAS::Journey->mk_ro_accessors(
	qw(datetime sched_datetime rt_datetime tz_offset
	  is_additional is_cancelled is_partially_cancelled
	  station station_eva platform sched_platform rt_platform operator
	  product product_at
	  id name type type_long class number line line_no load delay
	  route_end route_start origin destination direction)
);

# {{{ Constructor

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

	my @icoL  = @{ $opt{common}{icoL}  // [] };
	my @tcocL = @{ $opt{common}{tcocL} // [] };
	my @remL  = @{ $opt{common}{remL}  // [] };
	my @himL  = @{ $opt{common}{himL}  // [] };

	my $prodL   = $opt{prodL};
	my $locL    = $opt{locL};
	my $hafas   = $opt{hafas};
	my $journey = $opt{journey};

	my $date = $opt{date} // $journey->{date};

	my $direction = $journey->{dirTxt};
	my $jid       = $journey->{jid};

	my $is_cancelled        = $journey->{isCncl};
	my $partially_cancelled = $journey->{isPartCncl};

	my $product = $prodL->[ $journey->{prodX} ];

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

	my $datetime_ref;

	if ( @{ $journey->{stopL} // [] } or $journey->{stbStop} ) {
		my ( $date_ref, $parse_fmt );
		if ( $jid =~ /#/ ) {

			# modern trip ID, used e.g. by DB and ÖBB
			$date_ref  = ( split( /#/, $jid ) )[12];
			$parse_fmt = '%d%m%y';
			if ( length($date_ref) < 5 ) {
				warn(
"HAFAS, not even once -- midnight crossing may be bogus -- date_ref $date_ref"
				);
			}
			elsif ( length($date_ref) == 5 ) {
				$date_ref = "0${date_ref}";
			}
		}
		else {
			# old (legacy?) trip ID
			$date_ref  = ( split( qr{[|]}, $jid ) )[4];
			$parse_fmt = '%d%m%Y';
			if ( length($date_ref) < 7 ) {
				warn(
"HAFAS, not even once -- midnight crossing may be bogus -- date_ref $date_ref"
				);
			}
			elsif ( length($date_ref) == 7 ) {
				$date_ref = "0${date_ref}";
			}
		}
		$datetime_ref = DateTime::Format::Strptime->new(
			pattern   => $parse_fmt,
			time_zone => $hafas->get_active_service->{time_zone}
			  // 'Europe/Berlin'
		)->parse_datetime($date_ref);
	}

	my @stops;
	my $route_end;
	for my $stop ( @{ $journey->{stopL} // [] } ) {
		my $loc = $locL->[ $stop->{locX} ];

		my $stopref = {
			loc          => $loc,
			stop         => $stop,
			common       => $opt{common},
			prodL        => $prodL,
			hafas        => $hafas,
			date         => $date,
			datetime_ref => $datetime_ref,
		};

		push( @stops, $stopref );

		$route_end = $loc->name;
	}

	if ( $journey->{stbStop} ) {
		if ( $hafas->{arrivals} ) {
			$route_end = $stops[0]->{name};
			pop(@stops);
		}
		else {
			shift(@stops);
		}
	}

	my $ref = {
		id                     => $jid,
		product                => $product,
		name                   => $product->name,
		number                 => $product->number,
		line                   => $product->name,
		line_no                => $product->line_no,
		type                   => $product->type,
		type_long              => $product->type_long,
		class                  => $product->class,
		operator               => $product->operator,
		direction              => $direction,
		is_cancelled           => $is_cancelled,
		is_partially_cancelled => $partially_cancelled,
		route_end              => $route_end // $direction,
		messages               => \@messages,
		route                  => \@stops,
	};

	if ( $journey->{stbStop} ) {
		if ( $hafas->{arrivals} ) {
			$ref->{origin} = $ref->{route_end};
			$ref->{is_cancelled} ||= $journey->{stbStop}{aCncl};
		}
		else {
			$ref->{destination} = $ref->{route_end};
			$ref->{is_cancelled} ||= $journey->{stbStop}{dCncl};
		}
		$ref->{is_additional} = $journey->{stbStop}{isAdd};
	}
	elsif ( $stops[0] and $stops[0]{loc} ) {
		$ref->{route_start} = $stops[0]{loc}->name;
	}

	bless( $ref, $obj );

	if ( $journey->{stbStop} ) {
		$ref->{station}        = $locL->[ $journey->{stbStop}{locX} ]->name;
		$ref->{station_eva}    = 0 + $locL->[ $journey->{stbStop}{locX} ]->eva;
		$ref->{sched_platform} = $journey->{stbStop}{dPlatfS}
		  // $journey->{stbStop}{dPltfS}{txt};
		$ref->{rt_platform} = $journey->{stbStop}{dPlatfR}
		  // $journey->{stbStop}{dPltfR}{txt};
		$ref->{platform} = $ref->{rt_platform} // $ref->{sched_platform};

		my $datetime_s = Travel::Status::DE::HAFAS::Stop::handle_day_change(
			$ref,
			input =>
			  $journey->{stbStop}{ $hafas->{arrivals} ? 'aTimeS' : 'dTimeS' },
			offset => $journey->{stbStop}{
				$hafas->{arrivals}
				? 'aTZOffset'
				: 'dTZOffset'
			},
			date     => $date,
			strp_obj => $hafas->{strptime_obj},
			ref      => $datetime_ref,
		);

		my $datetime_r = Travel::Status::DE::HAFAS::Stop::handle_day_change(
			$ref,
			input =>
			  $journey->{stbStop}{ $hafas->{arrivals} ? 'aTimeR' : 'dTimeR' },
			offset => $journey->{stbStop}{
				$hafas->{arrivals}
				? 'aTZOffset'
				: 'dTZOffset'
			},
			date     => $date,
			strp_obj => $hafas->{strptime_obj},
			ref      => $datetime_ref,
		);

		my $delay
		  = $datetime_r
		  ? ( $datetime_r->epoch - $datetime_s->epoch ) / 60
		  : undef;

		$ref->{sched_datetime} = $datetime_s;
		$ref->{rt_datetime}    = $datetime_r;
		$ref->{datetime}       = $datetime_r // $datetime_s;
		$ref->{delay}          = $delay;

		if ( $ref->{delay} ) {
			$ref->{datetime} = $ref->{rt_datetime};
		}
		else {
			$ref->{datetime} = $ref->{sched_datetime};
		}

		my %tco;
		for my $tco_id ( @{ $journey->{stbStop}{dTrnCmpSX}{tcocX} // [] } ) {
			my $tco_kv = $tcocL[$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;
			}

			$tco{ $tco_kv->{c} } = $load;
		}
		if (%tco) {
			$ref->{load} = \%tco;
		}
	}
	if ( $opt{polyline} ) {
		$ref->{polyline} = $opt{polyline};
	}

	return $ref;
}

# }}}

# {{{ Accessors

# Legacy
sub station_uic {
	my ($self) = @_;
	return $self->{station_eva};
}

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

	if ( defined $self->{rt_platform} and defined $self->{sched_platform} ) {
		if ( $self->{rt_platform} ne $self->{sched_platform} ) {
			return 1;
		}
		return 0;
	}
	if ( defined $self->{rt_platform} ) {
		return 1;
	}

	return 0;
}

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

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

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

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

	$self->{operators} = [
		uniq map { ( $_->prod_arr // $_->prod_dep )->operator } grep {
			      ( $_->prod_arr or $_->prod_dep )
			  and ( $_->prod_arr // $_->prod_dep )->operator
		} $self->route
	];

	return @{ $self->{operators} };
}

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

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

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

	if ( $self->{route} and @{ $self->{route} } ) {
		if ( $self->{route}[0] and $self->{route}[0]{stop} ) {
			$self->{route}
			  = [ map { Travel::Status::DE::HAFAS::Stop->new( %{$_} ) }
				  @{ $self->{route} } ];
		}
		return @{ $self->{route} };
	}
	return;
}

sub route_interesting {
	my ( $self, $max_parts ) = @_;

	my @via = $self->route;
	my ( @via_main, @via_show, $last_stop );
	$max_parts //= 3;

	# Centraal: dutch main station (Hbf in .nl)
	# HB:  swiss main station (Hbf in .ch)
	# hl.n.: czech main station (Hbf in .cz)
	for my $stop (@via) {
		if ( $stop->loc->name
			=~ m{ HB $ | hl\.n\. $ | Hbf | Hauptbahnhof | Bf | Bahnhof | Centraal | Flughafen }x
		  )
		{
			push( @via_main, $stop );
		}
	}
	$last_stop = pop(@via);

	if ( @via_main and $via_main[-1]->loc->name eq $last_stop->loc->name ) {
		pop(@via_main);
	}
	if ( @via and $via[-1]->loc->name eq $last_stop->loc->name ) {
		pop(@via);
	}

	if ( @via_main and @via and $via[0]->loc->name eq $via_main[0]->loc->name )
	{
		shift(@via_main);
	}

	if ( @via < $max_parts ) {
		@via_show = @via;
	}
	else {
		if ( @via_main >= $max_parts ) {
			@via_show = ( $via[0] );
		}
		else {
			@via_show = splice( @via, 0, $max_parts - @via_main );
		}

		while ( @via_show < $max_parts and @via_main ) {
			my $stop = shift(@via_main);
			if ( any { $_->loc->name eq $stop->loc->name } @via_show
				or $stop->loc->name eq $last_stop->loc->name )
			{
				next;
			}
			push( @via_show, $stop );
		}
	}

	return @via_show;

}

sub product_at {
	my ( $self, $req_stop ) = @_;
	for my $stop ( $self->route ) {
		if ( $stop->loc->name eq $req_stop or $stop->loc->eva eq $req_stop ) {
			return $stop->prod_dep // $stop->prod_arr;
		}
	}
	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;
		}
	}
	$ret->{route} = [ map { $_->TO_JSON } $self->route ];

	return $ret;
}

# }}}

1;

__END__

=head1 NAME

Travel::Status::DE::HAFAS::Journey - Information about a single
journey received by Travel::Status::DE::HAFAS

=head1 SYNOPSIS

	for my $departure ($status->results) {
		printf(
			"At %s: %s to %s from platform %s\n",
			$departure->datetime->strftime('%H:%M'),
			$departure->line,
			$departure->destination,
			$departure->platform,
		);
	}

	# or (depending on module setup)
	for my $arrival ($status->results) {
		printf(
			"At %s: %s from %s on platform %s\n",
			$arrival->datetime->strftime('%H:%M'),
			$arrival->line,
			$arrival->origin,
			$arrival->platform,
		);
	}

=head1 VERSION

version 6.09

=head1 DESCRIPTION

Travel::Status::DE::HAFAS::Journey describes a single journey. It is either
a station-specific arrival/departure obtained by a stationboard query, or a
train journey that does not belong to a specific station.

stationboard-specific accessors are annotated with "(station only)" and return
undef for non-station journeys. 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 $journey->name

Journey or line name, either in a format like "Bus SB16" (Bus line
SB16) or "RE 10111" (RegionalExpress train 10111, no line information).  May
contain extraneous whitespace characters.

=item $journey->type

Type of this journey, e.g. "S" for S-Bahn, "RE" for Regional Express
or "STR" for tram / StraE<szlig>enbahn.

=item $journey->type_long

Long type of this journey, e.g. "S-Bahn" or "Regional-Express".

=item $journey->class

An integer identifying the the mode of transport class.
Semantics depend on backend, e.g. "1" and "2" for long-distance trains and
"4" and "8" for regional trains.

=item $journey->line

Journey or line name, either in a format like "Bus SB16" (Bus line
SB16), "RE 42" (RegionalExpress train 42) or "IC 2901" (InterCity train 2901,
no line information).  May contain extraneous whitespace characters.  Note that
this accessor does not return line information for IC/ICE/EC services, even if
it is available. Use B<line_no> for those.

=item $journey->line_no

Line identifier, or undef if it is unknown.
The line identifier may be a single number such as "11" (underground train
line U 11), a single word (e.g. "AIR") or a combination (e.g. "SB16").
May also provide line numbers of IC/ICE services.

=item $journey->number

Journey number (e.g. train number), or undef if it is unknown.

=item $journey->id

HAFAS-internal journey ID.

=item $journey->rt_datetime (station only)

DateTime object indicating the actual arrival/departure date and time.
undef if no real-time data is available.

=item $journey->sched_datetime (station only)

DateTime object indicating the scheduled arrival/departure date and time.
undef if no schedule data is available.

=item $journey->datetime (station only)

DateTime object indicating the arrival/departure date and time.
Real-time data if available, schedule data otherwise.
undef if neither is available.

=item $journey->tz_offset

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

=item $journey->delay (station only)

Delay in minutes, or undef if it is unknown.
Also returns undef if the arrival/departure has been cancelled.

=item $journey->is_additional (station only)

True if the journey's stop at the requested station is an unscheduled addition
to its route.

=item $journey->is_cancelled

True if the journey was cancelled, false otherwise.

=item $journey->is_partially_cancelled

True if part of the journey was cancelled, false otherwise.

=item $journey->product

Travel::Status::DE::HAFAS::Product(3pm) instance describing the product (mode
of transport, line number / ID, operator, ...) associated with this journey.
Note that journeys may be associated with multiple products -- see also
C<< $journey->route >> and C<< $stop->product >>.

=item $journey->product_at(I<stop>)

Travel::Status::DE::HAFAS::Product(3pm) instance describing the product
associated with I<stop> (name or EVA ID). Returns undef if product or I<stop>
are unknown.

=item $journey->rt_platform (station only)

Actual arrival/departure platform.
undef if no real-time data is available.

=item $journey->sched_platform (station only)

Scheduled arrival/departure platform.
undef if no scheduled platform is available.

=item $journey->platform (station only)

Arrival/Departure platform. Real-time data if available, schedule data
otherwise. May be undef.

=item $journey->is_changed_platform (station only)

True if the real-time platform is known and it is not the scheduled one.

=item $journey->load (station only)

Expected passenger load (i.e., how full the vehicle is) at the requested stop.
If known, returns a hashref that maps classes (typically FIRST/SECOND) to
load estimation numbers. The DB backend uses 1 (low to medium), 2 (high),
3 (very high), and 4 (exceptionally high, train is booked out).
Undef if unknown.

=item $journey->messages

List of Travel::Status::DE::HAFAS::Message(3pm) instances related to this
journey. Messages usually are service notices (e.g. "missing carriage") or
detailed delay reasons (e.g. "switch damage between X and Y, expect delays").

=item $journey->operator

The operator responsible for this journey. Returns undef
if the backend does not provide an operator. Note that the operator may
change along the journey -- in this case, the returned operator depends on
the backend and appears to be the first one in most cases.

=item $journey->operators

List of all operators observed along the journey.

=item $journey->station (station only)

Name of the station at which this journey was requested.

=item $journey->station_eva (station only)

UIC/EVA ID of the station at which this journey was requested.

=item $journey->route

List of Travel::Status::DE::HAFAS::Stop(3pm) objects that describe individual
stops along the journey. In stationboard mode, the list only contains arrivals
prior to the requested station or departures after the requested station. In
journey mode, it contains the entire route.

=item $journey->route_interesting([I<count>])

Up to I<count> (default: B<3>) parts of C<< $journey->route >> that may
be particularly helpful, e.g. main stations or airports.

=item $journey->route_end

Name of the last route station. In arrival mode, this is where the train
started; in all other cases, it is the terminus.

=item $journey->destination

Alias for route_end; only set when requesting departures in station mode.

=item $journey->origin

Alias for route_end; only set when requesting arrivals in station mode.

=item $journey->direction

Train direction; this is typically the text printed on the train itself.
May be different from destination / route_end and may change along the route,
see above.

=item $journey->polyline (journey only)

List of geocoordinates that describe the train's route. Only available if the
HAFAS object constructor was passed a true B<with_polyline> value.  Each list
entry is a hash with the following keys.

=over

=item * lon (longitude)

=item * lat (latitude)

=item * name (name of stop at this location, if any. undef otherwise)

=item * eva (EVA ID of stop at this location, if any. undef otherwise)

=back

Note that stop locations in B<polyline> may differ from the coordinates
returned in B<route>. This is a backend issue; Travel::Status::DE::HAFAS
simply passes the returned coordinates 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) 2015-2023 by Birte Kristina Friesel E<lt>derf@finalrewind.orgE<gt>

=head1 LICENSE

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