xref: /webtrees/app/Fact.php (revision 30e63383b10bafff54347985dcdbd10c40c33f62) 
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2021 webtrees development team
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees;
21
22use Closure;
23use Fisharebest\Webtrees\Functions\FunctionsPrint;
24use Fisharebest\Webtrees\Services\GedcomService;
25use Illuminate\Support\Collection;
26use InvalidArgumentException;
27
28use function array_flip;
29use function array_key_exists;
30use function count;
31use function e;
32use function implode;
33use function in_array;
34use function preg_match;
35use function preg_match_all;
36use function preg_replace;
37use function str_contains;
38use function usort;
39
40use const PREG_SET_ORDER;
41
42/**
43 * A GEDCOM fact or event object.
44 */
45class Fact
46{
47    private const FACT_ORDER = [
48        'BIRT',
49        '_HNM',
50        'ALIA',
51        '_AKA',
52        '_AKAN',
53        'ADOP',
54        '_ADPF',
55        '_ADPF',
56        '_BRTM',
57        'CHR',
58        'BAPM',
59        'FCOM',
60        'CONF',
61        'BARM',
62        'BASM',
63        'EDUC',
64        'GRAD',
65        '_DEG',
66        'EMIG',
67        'IMMI',
68        'NATU',
69        '_MILI',
70        '_MILT',
71        'ENGA',
72        'MARB',
73        'MARC',
74        'MARL',
75        '_MARI',
76        '_MBON',
77        'MARR',
78        '_COML',
79        '_STAT',
80        '_SEPR',
81        'DIVF',
82        'MARS',
83        'DIV',
84        'ANUL',
85        'CENS',
86        'OCCU',
87        'RESI',
88        'PROP',
89        'CHRA',
90        'RETI',
91        'FACT',
92        'EVEN',
93        '_NMR',
94        '_NMAR',
95        'NMR',
96        'NCHI',
97        'WILL',
98        '_HOL',
99        '_????_',
100        'DEAT',
101        '_FNRL',
102        'CREM',
103        'BURI',
104        '_INTE',
105        '_YART',
106        '_NLIV',
107        'PROB',
108        'TITL',
109        'COMM',
110        'NATI',
111        'CITN',
112        'CAST',
113        'RELI',
114        'SSN',
115        'IDNO',
116        'TEMP',
117        'SLGC',
118        'BAPL',
119        'CONL',
120        'ENDL',
121        'SLGS',
122        'ADDR',
123        'PHON',
124        'EMAIL',
125        '_EMAIL',
126        'EMAL',
127        'FAX',
128        'WWW',
129        'URL',
130        '_URL',
131        'AFN',
132        'REFN',
133        '_PRMN',
134        'REF',
135        'RIN',
136        '_UID',
137        'OBJE',
138        'NOTE',
139        'SOUR',
140        'CHAN',
141        '_TODO',
142    ];
143
144    /** @var string Unique identifier for this fact (currently implemented as a hash of the raw data). */
145    private $id;
146
147    /** @var GedcomRecord The GEDCOM record from which this fact is taken */
148    private $record;
149
150    /** @var string The raw GEDCOM data for this fact */
151    private $gedcom;
152
153    /** @var string The GEDCOM tag for this record */
154    private $tag;
155
156    /** @var bool Is this a recently deleted fact, pending approval? */
157    private $pending_deletion = false;
158
159    /** @var bool Is this a recently added fact, pending approval? */
160    private $pending_addition = false;
161
162    /** @var Date The date of this fact, from the “2 DATE …” attribute */
163    private $date;
164
165    /** @var Place The place of this fact, from the “2 PLAC …” attribute */
166    private $place;
167
168    /** @var int Used by Functions::sortFacts() */
169    private $sortOrder;
170
171    /**
172     * Create an event object from a gedcom fragment.
173     * We need the parent object (to check privacy) and a (pseudo) fact ID to
174     * identify the fact within the record.
175     *
176     * @param string       $gedcom
177     * @param GedcomRecord $parent
178     * @param string       $id
179     *
180     * @throws InvalidArgumentException
181     */
182    public function __construct(string $gedcom, GedcomRecord $parent, string $id)
183    {
184        if (preg_match('/^1 (' . Gedcom::REGEX_TAG . ')/', $gedcom, $match)) {
185            $this->gedcom = $gedcom;
186            $this->record = $parent;
187            $this->id     = $id;
188            $this->tag    = $match[1];
189        } else {
190            throw new InvalidArgumentException('Invalid GEDCOM data passed to Fact::_construct(' . $gedcom . ',' . $parent->xref() . ')');
191        }
192    }
193
194    /**
195     * Get the value of level 1 data in the fact
196     * Allow for multi-line values
197     *
198     * @return string
199     */
200    public function value(): string
201    {
202        if (preg_match('/^1 (?:' . $this->tag . ') ?(.*(?:(?:\n2 CONT ?.*)*))/', $this->gedcom, $match)) {
203            return preg_replace("/\n2 CONT ?/", "\n", $match[1]);
204        }
205
206        return '';
207    }
208
209    /**
210     * Get the record to which this fact links
211     *
212     * @return Family|GedcomRecord|Individual|Location|Media|Note|Repository|Source|Submission|Submitter|null
213     */
214    public function target()
215    {
216        if (!preg_match('/^@(' . Gedcom::REGEX_XREF . ')@$/', $this->value(), $match)) {
217            return null;
218        }
219
220        $xref = $match[1];
221
222        switch ($this->tag) {
223            case 'FAMC':
224            case 'FAMS':
225                return Registry::familyFactory()->make($xref, $this->record()->tree());
226            case 'HUSB':
227            case 'WIFE':
228            case 'ALIA':
229            case 'CHIL':
230            case '_ASSO':
231                return Registry::individualFactory()->make($xref, $this->record()->tree());
232            case 'ASSO':
233                return
234                    Registry::individualFactory()->make($xref, $this->record()->tree()) ??
235                    Registry::submitterFactory()->make($xref, $this->record()->tree());
236            case 'SOUR':
237                return Registry::sourceFactory()->make($xref, $this->record()->tree());
238            case 'OBJE':
239                return Registry::mediaFactory()->make($xref, $this->record()->tree());
240            case 'REPO':
241                return Registry::repositoryFactory()->make($xref, $this->record()->tree());
242            case 'NOTE':
243                return Registry::noteFactory()->make($xref, $this->record()->tree());
244            case 'ANCI':
245            case 'DESI':
246            case 'SUBM':
247                return Registry::submitterFactory()->make($xref, $this->record()->tree());
248            case 'SUBN':
249                return Registry::submissionFactory()->make($xref, $this->record()->tree());
250            case '_LOC':
251                return Registry::locationFactory()->make($xref, $this->record()->tree());
252            default:
253                return Registry::gedcomRecordFactory()->make($xref, $this->record()->tree());
254        }
255    }
256
257    /**
258     * Get the value of level 2 data in the fact
259     *
260     * @param string $tag
261     *
262     * @return string
263     */
264    public function attribute(string $tag): string
265    {
266        if (preg_match('/\n2 (?:' . $tag . ') ?(.*(?:(?:\n3 CONT ?.*)*)*)/', $this->gedcom, $match)) {
267            return preg_replace("/\n3 CONT ?/", "\n", $match[1]);
268        }
269
270        return '';
271    }
272
273    /**
274     * Get the PLAC:MAP:LATI for the fact.
275     *
276     * @return float|null
277     */
278    public function latitude(): ?float
279    {
280        if (preg_match('/\n4 LATI (.+)/', $this->gedcom, $match)) {
281            $gedcom_service = new GedcomService();
282
283            return $gedcom_service->readLatitude($match[1]);
284        }
285
286        return null;
287    }
288
289    /**
290     * Get the PLAC:MAP:LONG for the fact.
291     *
292     * @return float|null
293     */
294    public function longitude(): ?float
295    {
296        if (preg_match('/\n4 LONG (.+)/', $this->gedcom, $match)) {
297            $gedcom_service = new GedcomService();
298
299            return $gedcom_service->readLongitude($match[1]);
300        }
301
302        return null;
303    }
304
305    /**
306     * Do the privacy rules allow us to display this fact to the current user
307     *
308     * @param int|null $access_level
309     *
310     * @return bool
311     */
312    public function canShow(int $access_level = null): bool
313    {
314        $access_level = $access_level ?? Auth::accessLevel($this->record->tree());
315
316        // Does this record have an explicit RESN?
317        if (str_contains($this->gedcom, "\n2 RESN confidential")) {
318            return Auth::PRIV_NONE >= $access_level;
319        }
320        if (str_contains($this->gedcom, "\n2 RESN privacy")) {
321            return Auth::PRIV_USER >= $access_level;
322        }
323        if (str_contains($this->gedcom, "\n2 RESN none")) {
324            return true;
325        }
326
327        // Does this record have a default RESN?
328        $xref                    = $this->record->xref();
329        $fact_privacy            = $this->record->tree()->getFactPrivacy();
330        $individual_fact_privacy = $this->record->tree()->getIndividualFactPrivacy();
331        if (isset($individual_fact_privacy[$xref][$this->tag])) {
332            return $individual_fact_privacy[$xref][$this->tag] >= $access_level;
333        }
334        if (isset($fact_privacy[$this->tag])) {
335            return $fact_privacy[$this->tag] >= $access_level;
336        }
337
338        // No restrictions - it must be public
339        return true;
340    }
341
342    /**
343     * Check whether this fact is protected against edit
344     *
345     * @return bool
346     */
347    public function canEdit(): bool
348    {
349        if ($this->isPendingDeletion()) {
350            return false;
351        }
352
353        if (Auth::isManager($this->record->tree())) {
354            return true;
355        }
356
357        // Members cannot edit RESN, CHAN and locked records
358        return Auth::isEditor($this->record->tree()) && !str_contains($this->gedcom, "\n2 RESN locked") && $this->tag !== 'RESN' && $this->tag !== 'CHAN';
359    }
360
361    /**
362     * The place where the event occured.
363     *
364     * @return Place
365     */
366    public function place(): Place
367    {
368        $this->place ??= new Place($this->attribute('PLAC'), $this->record()->tree());
369
370        return $this->place;
371    }
372
373    /**
374     * Get the date for this fact.
375     * We can call this function many times, especially when sorting,
376     * so keep a copy of the date.
377     *
378     * @return Date
379     */
380    public function date(): Date
381    {
382        $this->date ??= new Date($this->attribute('DATE'));
383
384        return $this->date;
385    }
386
387    /**
388     * The raw GEDCOM data for this fact
389     *
390     * @return string
391     */
392    public function gedcom(): string
393    {
394        return $this->gedcom;
395    }
396
397    /**
398     * Get a (pseudo) primary key for this fact.
399     *
400     * @return string
401     */
402    public function id(): string
403    {
404        return $this->id;
405    }
406
407    /**
408     * What is the tag (type) of this fact, such as BIRT, MARR or DEAT.
409     *
410     * @return string
411     */
412    public function tag(): string
413    {
414        return $this->record->tag() . ':' . $this->tag;
415    }
416
417    /**
418     * What is the tag (type) of this fact, such as BIRT, MARR or DEAT.
419     *
420     * @return string
421     *
422     * @deprecated since 2.0.5.  Will be removed in 2.1.0
423     */
424    public function getTag(): string
425    {
426        return $this->tag;
427    }
428
429    /**
430     * The Person/Family record where this Fact came from
431     *
432     * @return Individual|Family|Source|Repository|Media|Note|Submitter|Submission|Location|Header|GedcomRecord
433     */
434    public function record()
435    {
436        return $this->record;
437    }
438
439    /**
440     * Get the name of this fact type, for use as a label.
441     *
442     * @return string
443     */
444    public function label(): string
445    {
446        // Marriages
447        if ($this->tag() === 'FAM:MARR') {
448            $element = Registry::elementFactory()->make('FAM:MARR:TYPE');
449            $type = $this->attribute('TYPE');
450
451            if ($type !== '') {
452                return $element->value($type, $this->record->tree());
453            }
454        }
455
456        // Custom FACT/EVEN - with a TYPE
457        if ($this->tag === 'FACT' || $this->tag === 'EVEN') {
458            $type = $this->attribute('TYPE');
459
460            if ($type !== '') {
461                if (!str_contains($type, '%')) {
462                    // Allow user-translations of custom types.
463                    $translated = I18N::translate($type);
464
465                    if ($translated !== $type) {
466                        return $translated;
467                    }
468                }
469
470                return e($type);
471            }
472        }
473
474        return Registry::elementFactory()->make($this->tag())->label();
475    }
476
477    /**
478     * This is a newly deleted fact, pending approval.
479     *
480     * @return void
481     */
482    public function setPendingDeletion(): void
483    {
484        $this->pending_deletion = true;
485        $this->pending_addition = false;
486    }
487
488    /**
489     * Is this a newly deleted fact, pending approval.
490     *
491     * @return bool
492     */
493    public function isPendingDeletion(): bool
494    {
495        return $this->pending_deletion;
496    }
497
498    /**
499     * This is a newly added fact, pending approval.
500     *
501     * @return void
502     */
503    public function setPendingAddition(): void
504    {
505        $this->pending_addition = true;
506        $this->pending_deletion = false;
507    }
508
509    /**
510     * Is this a newly added fact, pending approval.
511     *
512     * @return bool
513     */
514    public function isPendingAddition(): bool
515    {
516        return $this->pending_addition;
517    }
518
519    /**
520     * Source citations linked to this fact
521     *
522     * @return array<string>
523     */
524    public function getCitations(): array
525    {
526        preg_match_all('/\n(2 SOUR @(' . Gedcom::REGEX_XREF . ')@(?:\n[3-9] .*)*)/', $this->gedcom(), $matches, PREG_SET_ORDER);
527        $citations = [];
528        foreach ($matches as $match) {
529            $source = Registry::sourceFactory()->make($match[2], $this->record()->tree());
530            if ($source && $source->canShow()) {
531                $citations[] = $match[1];
532            }
533        }
534
535        return $citations;
536    }
537
538    /**
539     * Notes (inline and objects) linked to this fact
540     *
541     * @return string[]|Note[]
542     */
543    public function getNotes(): array
544    {
545        $notes = [];
546        preg_match_all('/\n2 NOTE ?(.*(?:\n3.*)*)/', $this->gedcom(), $matches);
547        foreach ($matches[1] as $match) {
548            $note = preg_replace("/\n3 CONT ?/", "\n", $match);
549            if (preg_match('/@(' . Gedcom::REGEX_XREF . ')@/', $note, $nmatch)) {
550                $note = Registry::noteFactory()->make($nmatch[1], $this->record()->tree());
551                if ($note && $note->canShow()) {
552                    // A note object
553                    $notes[] = $note;
554                }
555            } else {
556                // An inline note
557                $notes[] = $note;
558            }
559        }
560
561        return $notes;
562    }
563
564    /**
565     * Media objects linked to this fact
566     *
567     * @return Media[]
568     */
569    public function getMedia(): array
570    {
571        $media = [];
572        preg_match_all('/\n2 OBJE @(' . Gedcom::REGEX_XREF . ')@/', $this->gedcom(), $matches);
573        foreach ($matches[1] as $match) {
574            $obje = Registry::mediaFactory()->make($match, $this->record()->tree());
575            if ($obje && $obje->canShow()) {
576                $media[] = $obje;
577            }
578        }
579
580        return $media;
581    }
582
583    /**
584     * A one-line summary of the fact - for charts, etc.
585     *
586     * @return string
587     */
588    public function summary(): string
589    {
590        $attributes = [];
591        $target     = $this->target();
592        if ($target instanceof GedcomRecord) {
593            $attributes[] = $target->fullName();
594        } else {
595            // Fact value
596            $value = $this->value();
597            if ($value !== '' && $value !== 'Y') {
598                $attributes[] = '<span dir="auto">' . e($value) . '</span>';
599            }
600            // Fact date
601            $date = $this->date();
602            if ($date->isOK()) {
603                if ($this->record() instanceof Individual && in_array($this->tag, Gedcom::BIRTH_EVENTS, true) && $this->record()->tree()->getPreference('SHOW_PARENTS_AGE')) {
604                    $attributes[] = $date->display() . FunctionsPrint::formatParentsAges($this->record(), $date);
605                } else {
606                    $attributes[] = $date->display();
607                }
608            }
609            // Fact place
610            if ($this->place()->gedcomName() !== '') {
611                $attributes[] = $this->place()->shortName();
612            }
613        }
614
615        $class = 'fact_' . $this->tag;
616        if ($this->isPendingAddition()) {
617            $class .= ' wt-new';
618        } elseif ($this->isPendingDeletion()) {
619            $class .= ' wt-old';
620        }
621
622        return
623            '<div class="' . $class . '">' .
624            /* I18N: a label/value pair, such as “Occupation: Farmer”. Some languages may need to change the punctuation. */
625            I18N::translate('<span class="label">%1$s:</span> <span class="field" dir="auto">%2$s</span>', $this->label(), implode(' — ', $attributes)) .
626            '</div>';
627    }
628
629    /**
630     * Helper functions to sort facts
631     *
632     * @return Closure
633     */
634    private static function dateComparator(): Closure
635    {
636        return static function (Fact $a, Fact $b): int {
637            if ($a->date()->isOK() && $b->date()->isOK()) {
638                // If both events have dates, compare by date
639                $ret = Date::compare($a->date(), $b->date());
640
641                if ($ret === 0) {
642                    // If dates overlap, compare by fact type
643                    $ret = self::typeComparator()($a, $b);
644
645                    // If the fact type is also the same, retain the initial order
646                    if ($ret === 0) {
647                        $ret = $a->sortOrder <=> $b->sortOrder;
648                    }
649                }
650
651                return $ret;
652            }
653
654            // One or both events have no date - retain the initial order
655            return $a->sortOrder <=> $b->sortOrder;
656        };
657    }
658
659    /**
660     * Helper functions to sort facts.
661     *
662     * @return Closure
663     */
664    public static function typeComparator(): Closure
665    {
666        static $factsort = [];
667
668        if ($factsort === []) {
669            $factsort = array_flip(self::FACT_ORDER);
670        }
671
672        return static function (Fact $a, Fact $b) use ($factsort): int {
673            // Facts from same families stay grouped together
674            // Keep MARR and DIV from the same families from mixing with events from other FAMs
675            // Use the original order in which the facts were added
676            if ($a->record instanceof Family && $b->record instanceof Family && $a->record !== $b->record) {
677                return $a->sortOrder - $b->sortOrder;
678            }
679
680            $atag = $a->tag;
681            $btag = $b->tag;
682
683            // Events not in the above list get mapped onto one that is.
684            if (!array_key_exists($atag, $factsort)) {
685                $atag = '_????_';
686            }
687
688            if (!array_key_exists($btag, $factsort)) {
689                $btag = '_????_';
690            }
691
692            // - Don't let dated after DEAT/BURI facts sort non-dated facts before DEAT/BURI
693            // - Treat dated after BURI facts as BURI instead
694            if ($a->attribute('DATE') !== '' && $factsort[$atag] > $factsort['BURI'] && $factsort[$atag] < $factsort['CHAN']) {
695                $atag = 'BURI';
696            }
697
698            if ($b->attribute('DATE') !== '' && $factsort[$btag] > $factsort['BURI'] && $factsort[$btag] < $factsort['CHAN']) {
699                $btag = 'BURI';
700            }
701
702            $ret = $factsort[$atag] - $factsort[$btag];
703
704            // If facts are the same then put dated facts before non-dated facts
705            if ($ret == 0) {
706                if ($a->attribute('DATE') !== '' && $b->attribute('DATE') === '') {
707                    return -1;
708                }
709
710                if ($b->attribute('DATE') !== '' && $a->attribute('DATE') === '') {
711                    return 1;
712                }
713
714                // If no sorting preference, then keep original ordering
715                $ret = $a->sortOrder - $b->sortOrder;
716            }
717
718            return $ret;
719        };
720    }
721
722    /**
723     * A multi-key sort
724     * 1. First divide the facts into two arrays one set with dates and one set without dates
725     * 2. Sort each of the two new arrays, the date using the compare date function, the non-dated
726     * using the compare type function
727     * 3. Then merge the arrays back into the original array using the compare type function
728     *
729     * @param Collection<Fact> $unsorted
730     *
731     * @return Collection<Fact>
732     */
733    public static function sortFacts(Collection $unsorted): Collection
734    {
735        $dated    = [];
736        $nondated = [];
737        $sorted   = [];
738
739        // Split the array into dated and non-dated arrays
740        $order = 0;
741
742        foreach ($unsorted as $fact) {
743            $fact->sortOrder = $order;
744            $order++;
745
746            if ($fact->date()->isOK()) {
747                $dated[] = $fact;
748            } else {
749                $nondated[] = $fact;
750            }
751        }
752
753        usort($dated, self::dateComparator());
754        usort($nondated, self::typeComparator());
755
756        // Merge the arrays
757        $dc = count($dated);
758        $nc = count($nondated);
759        $i  = 0;
760        $j  = 0;
761
762        // while there is anything in the dated array continue merging
763        while ($i < $dc) {
764            // compare each fact by type to merge them in order
765            if ($j < $nc && self::typeComparator()($dated[$i], $nondated[$j]) > 0) {
766                $sorted[] = $nondated[$j];
767                $j++;
768            } else {
769                $sorted[] = $dated[$i];
770                $i++;
771            }
772        }
773
774        // get anything that might be left in the nondated array
775        while ($j < $nc) {
776            $sorted[] = $nondated[$j];
777            $j++;
778        }
779
780        return new Collection($sorted);
781    }
782
783    /**
784     * Sort fact/event tags using the same order that we use for facts.
785     *
786     * @param Collection<string> $unsorted
787     *
788     * @return Collection<string>
789     */
790    public static function sortFactTags(Collection $unsorted): Collection
791    {
792        $tag_order = array_flip(self::FACT_ORDER);
793
794        return $unsorted->sort(static function (string $x, string $y) use ($tag_order): int {
795            $sort_x = $tag_order[$x] ?? $tag_order['_????_'];
796            $sort_y = $tag_order[$y] ?? $tag_order['_????_'];
797
798            return $sort_x - $sort_y;
799        });
800    }
801
802    /**
803     * Allow native PHP functions such as array_unique() to work with objects
804     *
805     * @return string
806     */
807    public function __toString(): string
808    {
809        return $this->id . '@' . $this->record->xref();
810    }
811}
812