xref: /webtrees/app/Fact.php (revision 56d475424b46df195a76f2a149ee5a07327497e8) 
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' && $this->tag !== 'CHAN';
359    }
360
361    /**
362     * The place where the event occured.
363     *
364     * @return Place
365     */
366    public function place(): Place
367    {
368        if ($this->place === null) {
369            $this->place = new Place($this->attribute('PLAC'), $this->record()->tree());
370        }
371
372        return $this->place;
373    }
374
375    /**
376     * Get the date for this fact.
377     * We can call this function many times, especially when sorting,
378     * so keep a copy of the date.
379     *
380     * @return Date
381     */
382    public function date(): Date
383    {
384        if ($this->date === null) {
385            $this->date = new Date($this->attribute('DATE'));
386        }
387
388        return $this->date;
389    }
390
391    /**
392     * The raw GEDCOM data for this fact
393     *
394     * @return string
395     */
396    public function gedcom(): string
397    {
398        return $this->gedcom;
399    }
400
401    /**
402     * Get a (pseudo) primary key for this fact.
403     *
404     * @return string
405     */
406    public function id(): string
407    {
408        return $this->id;
409    }
410
411    /**
412     * What is the tag (type) of this fact, such as BIRT, MARR or DEAT.
413     *
414     * @return string
415     */
416    public function tag(): string
417    {
418        return $this->record->tag() . ':' . $this->tag;
419    }
420
421    /**
422     * What is the tag (type) of this fact, such as BIRT, MARR or DEAT.
423     *
424     * @return string
425     *
426     * @deprecated since 2.0.5.  Will be removed in 2.1.0
427     */
428    public function getTag(): string
429    {
430        return $this->tag;
431    }
432
433    /**
434     * The Person/Family record where this Fact came from
435     *
436     * @return Individual|Family|Source|Repository|Media|Note|Submitter|Submission|Location|Header|GedcomRecord
437     */
438    public function record()
439    {
440        return $this->record;
441    }
442
443    /**
444     * Get the name of this fact type, for use as a label.
445     *
446     * @return string
447     */
448    public function label(): string
449    {
450        // Marriages
451        if ($this->tag() === 'FAM:MARR') {
452            $element = Registry::elementFactory()->make('FAM:MARR:TYPE');
453            $type = $this->attribute('TYPE');
454
455            if ($type !== '') {
456                return $element->value($type, $this->record->tree());
457            }
458        }
459
460        // Custom FACT/EVEN - with a TYPE
461        if ($this->tag === 'FACT' || $this->tag === 'EVEN') {
462            $type = $this->attribute('TYPE');
463
464            if ($type !== '') {
465                if (!str_contains($type, '%')) {
466                    // Allow user-translations of custom types.
467                    $translated = I18N::translate($type);
468
469                    if ($translated !== $type) {
470                        return $translated;
471                    }
472                }
473
474                return e($type);
475            }
476        }
477
478        return Registry::elementFactory()->make($this->tag())->label();
479    }
480
481    /**
482     * This is a newly deleted fact, pending approval.
483     *
484     * @return void
485     */
486    public function setPendingDeletion(): void
487    {
488        $this->pending_deletion = true;
489        $this->pending_addition = false;
490    }
491
492    /**
493     * Is this a newly deleted fact, pending approval.
494     *
495     * @return bool
496     */
497    public function isPendingDeletion(): bool
498    {
499        return $this->pending_deletion;
500    }
501
502    /**
503     * This is a newly added fact, pending approval.
504     *
505     * @return void
506     */
507    public function setPendingAddition(): void
508    {
509        $this->pending_addition = true;
510        $this->pending_deletion = false;
511    }
512
513    /**
514     * Is this a newly added fact, pending approval.
515     *
516     * @return bool
517     */
518    public function isPendingAddition(): bool
519    {
520        return $this->pending_addition;
521    }
522
523    /**
524     * Source citations linked to this fact
525     *
526     * @return array<string>
527     */
528    public function getCitations(): array
529    {
530        preg_match_all('/\n(2 SOUR @(' . Gedcom::REGEX_XREF . ')@(?:\n[3-9] .*)*)/', $this->gedcom(), $matches, PREG_SET_ORDER);
531        $citations = [];
532        foreach ($matches as $match) {
533            $source = Registry::sourceFactory()->make($match[2], $this->record()->tree());
534            if ($source && $source->canShow()) {
535                $citations[] = $match[1];
536            }
537        }
538
539        return $citations;
540    }
541
542    /**
543     * Notes (inline and objects) linked to this fact
544     *
545     * @return string[]|Note[]
546     */
547    public function getNotes(): array
548    {
549        $notes = [];
550        preg_match_all('/\n2 NOTE ?(.*(?:\n3.*)*)/', $this->gedcom(), $matches);
551        foreach ($matches[1] as $match) {
552            $note = preg_replace("/\n3 CONT ?/", "\n", $match);
553            if (preg_match('/@(' . Gedcom::REGEX_XREF . ')@/', $note, $nmatch)) {
554                $note = Registry::noteFactory()->make($nmatch[1], $this->record()->tree());
555                if ($note && $note->canShow()) {
556                    // A note object
557                    $notes[] = $note;
558                }
559            } else {
560                // An inline note
561                $notes[] = $note;
562            }
563        }
564
565        return $notes;
566    }
567
568    /**
569     * Media objects linked to this fact
570     *
571     * @return Media[]
572     */
573    public function getMedia(): array
574    {
575        $media = [];
576        preg_match_all('/\n2 OBJE @(' . Gedcom::REGEX_XREF . ')@/', $this->gedcom(), $matches);
577        foreach ($matches[1] as $match) {
578            $obje = Registry::mediaFactory()->make($match, $this->record()->tree());
579            if ($obje && $obje->canShow()) {
580                $media[] = $obje;
581            }
582        }
583
584        return $media;
585    }
586
587    /**
588     * A one-line summary of the fact - for charts, etc.
589     *
590     * @return string
591     */
592    public function summary(): string
593    {
594        $attributes = [];
595        $target     = $this->target();
596        if ($target instanceof GedcomRecord) {
597            $attributes[] = $target->fullName();
598        } else {
599            // Fact value
600            $value = $this->value();
601            if ($value !== '' && $value !== 'Y') {
602                $attributes[] = '<span dir="auto">' . e($value) . '</span>';
603            }
604            // Fact date
605            $date = $this->date();
606            if ($date->isOK()) {
607                if ($this->record() instanceof Individual && in_array($this->tag, Gedcom::BIRTH_EVENTS, true) && $this->record()->tree()->getPreference('SHOW_PARENTS_AGE')) {
608                    $attributes[] = $date->display() . FunctionsPrint::formatParentsAges($this->record(), $date);
609                } else {
610                    $attributes[] = $date->display();
611                }
612            }
613            // Fact place
614            if ($this->place()->gedcomName() !== '') {
615                $attributes[] = $this->place()->shortName();
616            }
617        }
618
619        $class = 'fact_' . $this->tag;
620        if ($this->isPendingAddition()) {
621            $class .= ' wt-new';
622        } elseif ($this->isPendingDeletion()) {
623            $class .= ' wt-old';
624        }
625
626        return
627            '<div class="' . $class . '">' .
628            /* I18N: a label/value pair, such as “Occupation: Farmer”. Some languages may need to change the punctuation. */
629            I18N::translate('<span class="label">%1$s:</span> <span class="field" dir="auto">%2$s</span>', $this->label(), implode(' — ', $attributes)) .
630            '</div>';
631    }
632
633    /**
634     * Helper functions to sort facts
635     *
636     * @return Closure
637     */
638    private static function dateComparator(): Closure
639    {
640        return static function (Fact $a, Fact $b): int {
641            if ($a->date()->isOK() && $b->date()->isOK()) {
642                // If both events have dates, compare by date
643                $ret = Date::compare($a->date(), $b->date());
644
645                if ($ret === 0) {
646                    // If dates overlap, compare by fact type
647                    $ret = self::typeComparator()($a, $b);
648
649                    // If the fact type is also the same, retain the initial order
650                    if ($ret === 0) {
651                        $ret = $a->sortOrder <=> $b->sortOrder;
652                    }
653                }
654
655                return $ret;
656            }
657
658            // One or both events have no date - retain the initial order
659            return $a->sortOrder <=> $b->sortOrder;
660        };
661    }
662
663    /**
664     * Helper functions to sort facts.
665     *
666     * @return Closure
667     */
668    public static function typeComparator(): Closure
669    {
670        static $factsort = [];
671
672        if ($factsort === []) {
673            $factsort = array_flip(self::FACT_ORDER);
674        }
675
676        return static function (Fact $a, Fact $b) use ($factsort): int {
677            // Facts from same families stay grouped together
678            // Keep MARR and DIV from the same families from mixing with events from other FAMs
679            // Use the original order in which the facts were added
680            if ($a->record instanceof Family && $b->record instanceof Family && $a->record !== $b->record) {
681                return $a->sortOrder - $b->sortOrder;
682            }
683
684            $atag = $a->tag;
685            $btag = $b->tag;
686
687            // Events not in the above list get mapped onto one that is.
688            if (!array_key_exists($atag, $factsort)) {
689                $atag = '_????_';
690            }
691
692            if (!array_key_exists($btag, $factsort)) {
693                $btag = '_????_';
694            }
695
696            // - Don't let dated after DEAT/BURI facts sort non-dated facts before DEAT/BURI
697            // - Treat dated after BURI facts as BURI instead
698            if ($a->attribute('DATE') !== '' && $factsort[$atag] > $factsort['BURI'] && $factsort[$atag] < $factsort['CHAN']) {
699                $atag = 'BURI';
700            }
701
702            if ($b->attribute('DATE') !== '' && $factsort[$btag] > $factsort['BURI'] && $factsort[$btag] < $factsort['CHAN']) {
703                $btag = 'BURI';
704            }
705
706            $ret = $factsort[$atag] - $factsort[$btag];
707
708            // If facts are the same then put dated facts before non-dated facts
709            if ($ret == 0) {
710                if ($a->attribute('DATE') !== '' && $b->attribute('DATE') === '') {
711                    return -1;
712                }
713
714                if ($b->attribute('DATE') !== '' && $a->attribute('DATE') === '') {
715                    return 1;
716                }
717
718                // If no sorting preference, then keep original ordering
719                $ret = $a->sortOrder - $b->sortOrder;
720            }
721
722            return $ret;
723        };
724    }
725
726    /**
727     * A multi-key sort
728     * 1. First divide the facts into two arrays one set with dates and one set without dates
729     * 2. Sort each of the two new arrays, the date using the compare date function, the non-dated
730     * using the compare type function
731     * 3. Then merge the arrays back into the original array using the compare type function
732     *
733     * @param Collection<Fact> $unsorted
734     *
735     * @return Collection<Fact>
736     */
737    public static function sortFacts(Collection $unsorted): Collection
738    {
739        $dated    = [];
740        $nondated = [];
741        $sorted   = [];
742
743        // Split the array into dated and non-dated arrays
744        $order = 0;
745
746        foreach ($unsorted as $fact) {
747            $fact->sortOrder = $order;
748            $order++;
749
750            if ($fact->date()->isOK()) {
751                $dated[] = $fact;
752            } else {
753                $nondated[] = $fact;
754            }
755        }
756
757        usort($dated, self::dateComparator());
758        usort($nondated, self::typeComparator());
759
760        // Merge the arrays
761        $dc = count($dated);
762        $nc = count($nondated);
763        $i  = 0;
764        $j  = 0;
765
766        // while there is anything in the dated array continue merging
767        while ($i < $dc) {
768            // compare each fact by type to merge them in order
769            if ($j < $nc && self::typeComparator()($dated[$i], $nondated[$j]) > 0) {
770                $sorted[] = $nondated[$j];
771                $j++;
772            } else {
773                $sorted[] = $dated[$i];
774                $i++;
775            }
776        }
777
778        // get anything that might be left in the nondated array
779        while ($j < $nc) {
780            $sorted[] = $nondated[$j];
781            $j++;
782        }
783
784        return new Collection($sorted);
785    }
786
787    /**
788     * Sort fact/event tags using the same order that we use for facts.
789     *
790     * @param Collection<string> $unsorted
791     *
792     * @return Collection<string>
793     */
794    public static function sortFactTags(Collection $unsorted): Collection
795    {
796        $tag_order = array_flip(self::FACT_ORDER);
797
798        return $unsorted->sort(static function (string $x, string $y) use ($tag_order): int {
799            $sort_x = $tag_order[$x] ?? $tag_order['_????_'];
800            $sort_y = $tag_order[$y] ?? $tag_order['_????_'];
801
802            return $sort_x - $sort_y;
803        });
804    }
805
806    /**
807     * Allow native PHP functions such as array_unique() to work with objects
808     *
809     * @return string
810     */
811    public function __toString(): string
812    {
813        return $this->id . '@' . $this->record->xref();
814    }
815
816    /**
817     * Add blank lines, to allow a user to add/edit new values.
818     *
819     * @return string
820     */
821    public function insertMissingSubtags(): string
822    {
823        return $this->record()->insertMissingLevels($this->tag(), $this->gedcom());
824    }
825}
826