xref: /webtrees/app/Module/IndividualListModule.php (revision 6f4ec3cadc983f0a7294108c634bef48846b4311)
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2023 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\Module;
21
22use Fig\Http\Message\StatusCodeInterface;
23use Fisharebest\Webtrees\Auth;
24use Fisharebest\Webtrees\DB;
25use Fisharebest\Webtrees\Family;
26use Fisharebest\Webtrees\I18N;
27use Fisharebest\Webtrees\Individual;
28use Fisharebest\Webtrees\Registry;
29use Fisharebest\Webtrees\Session;
30use Fisharebest\Webtrees\Tree;
31use Fisharebest\Webtrees\Validator;
32use Illuminate\Database\Query\Builder;
33use Illuminate\Database\Query\Expression;
34use Illuminate\Database\Query\JoinClause;
35use Illuminate\Support\Collection;
36use Psr\Http\Message\ResponseInterface;
37use Psr\Http\Message\ServerRequestInterface;
38use Psr\Http\Server\RequestHandlerInterface;
39
40use function array_filter;
41use function array_keys;
42use function array_map;
43use function array_merge;
44use function array_sum;
45use function array_values;
46use function assert;
47use function e;
48use function implode;
49use function ob_get_clean;
50use function ob_start;
51use function route;
52use function uksort;
53use function usort;
54use function view;
55
56use const ARRAY_FILTER_USE_KEY;
57
58/**
59 * Class IndividualListModule
60 */
61class IndividualListModule extends AbstractModule implements ModuleListInterface, RequestHandlerInterface
62{
63    use ModuleListTrait;
64
65    protected const ROUTE_URL = '/tree/{tree}/individual-list';
66
67    // The individual list and family list use the same code/logic.
68    // They just display different lists.
69    protected bool $families = false;
70
71    /**
72     * Initialization.
73     *
74     * @return void
75     */
76    public function boot(): void
77    {
78        Registry::routeFactory()->routeMap()
79            ->get(static::class, static::ROUTE_URL, $this);
80    }
81
82    /**
83     * How should this module be identified in the control panel, etc.?
84     *
85     * @return string
86     */
87    public function title(): string
88    {
89        /* I18N: Name of a module/list */
90        return I18N::translate('Individuals');
91    }
92
93    /**
94     * A sentence describing what this module does.
95     *
96     * @return string
97     */
98    public function description(): string
99    {
100        /* I18N: Description of the “Individuals” module */
101        return I18N::translate('A list of individuals.');
102    }
103
104    /**
105     * CSS class for the URL.
106     *
107     * @return string
108     */
109    public function listMenuClass(): string
110    {
111        return 'menu-list-indi';
112    }
113
114    /**
115     * @param Tree                                      $tree
116     * @param array<bool|int|string|array<string>|null> $parameters
117     *
118     * @return string
119     */
120    public function listUrl(Tree $tree, array $parameters = []): string
121    {
122        $request = Registry::container()->get(ServerRequestInterface::class);
123        $xref    = Validator::attributes($request)->isXref()->string('xref', '');
124
125        if ($xref !== '') {
126            $individual = Registry::individualFactory()->make($xref, $tree);
127
128            if ($individual instanceof Individual && $individual->canShow()) {
129                $primary_name = $individual->getPrimaryName();
130
131                $parameters['surname'] ??= $individual->getAllNames()[$primary_name]['surn'] ?? null;
132            }
133        }
134
135        $parameters['tree'] = $tree->name();
136
137        return route(static::class, $parameters);
138    }
139
140    /**
141     * @return array<string>
142     */
143    public function listUrlAttributes(): array
144    {
145        return [];
146    }
147
148    /**
149     * @param ServerRequestInterface $request
150     *
151     * @return ResponseInterface
152     */
153    public function handle(ServerRequestInterface $request): ResponseInterface
154    {
155        $tree = Validator::attributes($request)->tree();
156        $user = Validator::attributes($request)->user();
157
158        Auth::checkComponentAccess($this, ModuleListInterface::class, $tree, $user);
159
160        // All individuals with this surname
161        $surname_param = Validator::queryParams($request)->string('surname', '');
162        $surname       = I18N::strtoupper(I18N::language()->normalize($surname_param));
163
164        // All surnames beginning with this letter, where "@" is unknown and "," is none
165        $alpha = Validator::queryParams($request)->string('alpha', '');
166
167        // All first names beginning with this letter where "@" is unknown
168        $falpha = Validator::queryParams($request)->string('falpha', '');
169
170        // What type of list to display, if any
171        $show = Validator::queryParams($request)->string('show', 'surn');
172
173        // All individuals
174        $show_all = Validator::queryParams($request)->string('show_all', '');
175
176        // Include/exclude married names
177        $show_marnm = Validator::queryParams($request)->string('show_marnm', '');
178
179        // Break long lists down by given name
180        $show_all_firstnames = Validator::queryParams($request)->string('show_all_firstnames', '');
181
182        $params = [
183            'alpha'               => $alpha,
184            'falpha'              => $falpha,
185            'show'                => $show,
186            'show_all'            => $show_all,
187            'show_all_firstnames' => $show_all_firstnames,
188            'show_marnm'          => $show_marnm,
189            'surname'             => $surname,
190        ];
191
192        if ($surname_param !== $surname) {
193            return Registry::responseFactory()
194                ->redirectUrl($this->listUrl($tree, $params), StatusCodeInterface::STATUS_MOVED_PERMANENTLY);
195        }
196
197
198        // Make sure parameters are consistent with each other.
199        if ($show_all_firstnames === 'yes') {
200            $falpha = '';
201        }
202
203        if ($show_all === 'yes') {
204            $alpha   = '';
205            $surname = '';
206        }
207
208        if ($surname !== '') {
209            $alpha = I18N::language()->initialLetter($surname);
210        }
211
212        $all_surnames     = $this->allSurnames($tree, $show_marnm === 'yes', $this->families);
213        $surname_initials = $this->surnameInitials($all_surnames);
214
215        // Make sure selections are consistent.
216        // i.e. can’t specify show_all and surname at the same time.
217        if ($show_all === 'yes') {
218            if ($show_all_firstnames === 'yes') {
219                $legend = I18N::translate('All');
220                $params = ['tree' => $tree->name(), 'show_all' => 'yes', 'show_marnm' => $show_marnm];
221                $show   = 'indi';
222            } elseif ($falpha !== '') {
223                $legend = I18N::translate('All') . ', ' . e($falpha) . '…';
224                $params = ['tree' => $tree->name(), 'show_all' => 'yes', 'show_marnm' => $show_marnm];
225                $show   = 'indi';
226            } else {
227                $legend = I18N::translate('All');
228                $params = ['tree' => $tree->name(), 'show_all' => 'yes', 'show_marnm' => $show_marnm];
229            }
230        } elseif ($surname !== '') {
231            $show_all = 'no';
232            if ($surname === Individual::NOMEN_NESCIO) {
233                $legend = I18N::translateContext('Unknown surname', '…');
234                $show   = 'indi'; // The surname list makes no sense with only one surname.
235            } else {
236                // The surname parameter is a root/canonical form. Display the actual surnames found.
237                $variants = array_keys($all_surnames[$surname] ?? [$surname => $surname]);
238                usort($variants, I18N::comparator());
239                $variants = array_map(static fn (string $x): string => $x === '' ? I18N::translate('No surname') : $x, $variants);
240                $legend   = implode('/', $variants);
241                $show     = 'indi'; // The surname list makes no sense with only one surname.
242            }
243            $params = ['tree' => $tree->name(), 'surname' => $surname, 'falpha' => $falpha, 'show_marnm' => $show_marnm];
244            switch ($falpha) {
245                case '':
246                    break;
247                case '@':
248                    $legend .= ', ' . I18N::translateContext('Unknown given name', '…');
249                    break;
250                default:
251                    $legend .= ', ' . e($falpha) . '…';
252                    break;
253            }
254        } elseif ($alpha === '@') {
255            $show_all = 'no';
256            $legend   = I18N::translateContext('Unknown surname', '…');
257            $params   = ['alpha' => $alpha, 'tree' => $tree->name(), 'show_marnm' => $show_marnm];
258            $surname  = Individual::NOMEN_NESCIO;
259            $show     = 'indi'; // SURN list makes no sense here
260        } elseif ($alpha === ',') {
261            $show_all = 'no';
262            $legend   = I18N::translate('No surname');
263            $params   = ['alpha' => $alpha, 'tree' => $tree->name(), 'show_marnm' => $show_marnm];
264            $show     = 'indi'; // SURN list makes no sense here
265        } elseif ($alpha !== '') {
266            $show_all = 'no';
267            $legend   = e($alpha) . '…';
268            $params   = ['alpha' => $alpha, 'tree' => $tree->name(), 'show_marnm' => $show_marnm];
269        } else {
270            $show_all = 'no';
271            $legend   = '…';
272            $params   = ['tree' => $tree->name(), 'show_marnm' => $show_marnm];
273            $show     = 'none'; // Don't show lists until something is chosen
274        }
275        $legend = '<bdi>' . $legend . '</bdi>';
276
277        if ($this->families) {
278            $title = I18N::translate('Families') . ' — ' . $legend;
279        } else {
280            $title = I18N::translate('Individuals') . ' — ' . $legend;
281        }
282
283        ob_start(); ?>
284        <div class="d-flex flex-column wt-page-options wt-page-options-individual-list d-print-none">
285            <ul class="d-flex flex-wrap list-unstyled justify-content-center wt-initials-list wt-initials-list-surname">
286
287                <?php foreach ($surname_initials as $letter => $count) : ?>
288                    <li class="wt-initials-list-item d-flex">
289                        <?php if ($count > 0) : ?>
290                            <a href="<?= e($this->listUrl($tree, ['alpha' => $letter, 'show_marnm' => $show_marnm, 'tree' => $tree->name()])) ?>" class="wt-initial px-1<?= $letter === $alpha ? ' active' : '' ?> '" title="<?= I18N::number($count) ?>"><?= $this->displaySurnameInitial((string) $letter) ?></a>
291                        <?php else : ?>
292                            <span class="wt-initial px-1 text-muted"><?= $this->displaySurnameInitial((string) $letter) ?></span>
293
294                        <?php endif ?>
295                    </li>
296                <?php endforeach ?>
297
298                <?php if (Session::has('initiated')) : ?>
299                    <!-- Search spiders don't get the "show all" option as the other links give them everything. -->
300                    <li class="wt-initials-list-item d-flex">
301                        <a class="wt-initial px-1<?= $show_all === 'yes' ? ' active' : '' ?>" href="<?= e($this->listUrl($tree, ['show_all' => 'yes'] + $params)) ?>"><?= I18N::translate('All') ?></a>
302                    </li>
303                <?php endif ?>
304            </ul>
305
306            <!-- Search spiders don't get an option to show/hide the surname sublists, nor does it make sense on the all/unknown/surname views -->
307            <?php if ($show !== 'none' && Session::has('initiated')) : ?>
308                <?php if ($show_marnm === 'yes') : ?>
309                    <p>
310                        <a href="<?= e($this->listUrl($tree, ['show' => $show, 'show_marnm' => 'no'] + $params)) ?>">
311                            <?= I18N::translate('Exclude individuals with “%s” as a married name', $legend) ?>
312                        </a>
313                    </p>
314                <?php else : ?>
315                    <p>
316                        <a href="<?= e($this->listUrl($tree, ['show' => $show, 'show_marnm' => 'yes'] + $params)) ?>">
317                            <?= I18N::translate('Include individuals with “%s” as a married name', $legend) ?>
318                        </a>
319                    </p>
320                <?php endif ?>
321
322                <?php if ($alpha !== '@' && $alpha !== ',' && $surname === '') : ?>
323                    <?php if ($show === 'surn') : ?>
324                        <p>
325                            <a href="<?= e($this->listUrl($tree, ['show' => 'indi'] + $params)) ?>">
326                                <?= I18N::translate('Show the list of individuals') ?>
327                            </a>
328                        </p>
329                    <?php else : ?>
330                        <p>
331                            <a href="<?= e($this->listUrl($tree, ['show' => 'surn'] + $params)) ?>">
332                                <?= I18N::translate('Show the list of surnames') ?>
333                            </a>
334                        </p>
335                    <?php endif ?>
336                <?php endif ?>
337            <?php endif ?>
338        </div>
339
340        <div class="wt-page-content">
341            <?php
342            if ($show === 'indi' || $show === 'surn') {
343                switch ($alpha) {
344                    case '@':
345                        $surns = array_filter($all_surnames, static fn (string $x): bool => $x === Individual::NOMEN_NESCIO, ARRAY_FILTER_USE_KEY);
346                        break;
347                    case ',':
348                        $surns = array_filter($all_surnames, static fn (string $x): bool => $x === '', ARRAY_FILTER_USE_KEY);
349                        break;
350                    case '':
351                        if ($show_all === 'yes') {
352                            $surns = array_filter($all_surnames, static fn (string $x): bool => $x !== '' && $x !== Individual::NOMEN_NESCIO, ARRAY_FILTER_USE_KEY);
353                        } else {
354                            $surns = array_filter($all_surnames, static fn (string $x): bool => $x === $surname, ARRAY_FILTER_USE_KEY);
355                        }
356                        break;
357                    default:
358                        if ($surname === '') {
359                            $surns = array_filter($all_surnames, static fn (string $x): bool => I18N::language()->initialLetter($x) === $alpha, ARRAY_FILTER_USE_KEY);
360                        } else {
361                            $surns = array_filter($all_surnames, static fn (string $x): bool => $x === $surname, ARRAY_FILTER_USE_KEY);
362                        }
363                        break;
364                }
365
366                if ($show === 'surn') {
367                    // Show the surname list
368                    switch ($tree->getPreference('SURNAME_LIST_STYLE')) {
369                        case 'style1':
370                            echo view('lists/surnames-column-list', [
371                                'module'   => $this,
372                                'params'   => ['show' => 'indi', 'show_all' => null] + $params,
373                                'surnames' => $surns,
374                                'totals'   => true,
375                                'tree'     => $tree,
376                            ]);
377                            break;
378                        case 'style3':
379                            echo view('lists/surnames-tag-cloud', [
380                                'module'   => $this,
381                                'params'   => ['show' => 'indi', 'show_all' => null] + $params,
382                                'surnames' => $surns,
383                                'totals'   => true,
384                                'tree'     => $tree,
385                            ]);
386                            break;
387                        case 'style2':
388                        default:
389                            echo view('lists/surnames-table', [
390                                'families' => $this->families,
391                                'module'   => $this,
392                                'order'    => [[0, 'asc']],
393                                'params'   => ['show' => 'indi', 'show_all' => null] + $params,
394                                'surnames' => $surns,
395                                'tree'     => $tree,
396                            ]);
397                            break;
398                    }
399                } else {
400                    // Show the list
401                    $count = array_sum(array_map(static fn (array $x): int => array_sum($x), $surns));
402
403                    // Don't sublist short lists.
404                    if ($count < $tree->getPreference('SUBLIST_TRIGGER_I')) {
405                        $falpha = '';
406                    } else {
407                        // Break long lists by initial letter of given name
408                        $surns         = array_values(array_map(static fn ($x): array => array_keys($x), $surns));
409                        $surns         = array_merge(...$surns);
410                        $givn_initials = $this->givenNameInitials($tree, $surns, $show_marnm === 'yes', $this->families);
411
412                        if ($surname !== '' || $show_all === 'yes') {
413                            if ($show_all !== 'yes') {
414                                echo '<h2 class="wt-page-title">', I18N::translate('Individuals with surname %s', $legend), '</h2>';
415                            }
416                            // Don't show the list until we have some filter criteria
417                            $show = $falpha !== '' || $show_all_firstnames === 'yes' ? 'indi' : 'none';
418                            echo '<ul class="d-flex flex-wrap list-unstyled justify-content-center wt-initials-list wt-initials-list-given-names">';
419                            foreach ($givn_initials as $givn_initial => $given_count) {
420                                echo '<li class="wt-initials-list-item d-flex">';
421                                if ($given_count > 0) {
422                                    if ($show === 'indi' && $givn_initial === $falpha && $show_all_firstnames !== 'yes') {
423                                        echo '<a class="wt-initial px-1 active" href="' . e($this->listUrl($tree, ['falpha' => $givn_initial] + $params)) . '" title="' . I18N::number($given_count) . '">' . $this->displayGivenNameInitial((string) $givn_initial) . '</a>';
424                                    } else {
425                                        echo '<a class="wt-initial px-1" href="' . e($this->listUrl($tree, ['falpha' => $givn_initial] + $params)) . '" title="' . I18N::number($given_count) . '">' . $this->displayGivenNameInitial((string) $givn_initial) . '</a>';
426                                    }
427                                } else {
428                                    echo '<span class="wt-initial px-1 text-muted">' . $this->displayGivenNameInitial((string) $givn_initial) . '</span>';
429                                }
430                                echo '</li>';
431                            }
432                            // Search spiders don't get the "show all" option as the other links give them everything.
433                            if (Session::has('initiated')) {
434                                echo '<li class="wt-initials-list-item d-flex">';
435                                if ($show_all_firstnames === 'yes') {
436                                    echo '<span class="wt-initial px-1 active">' . I18N::translate('All') . '</span>';
437                                } else {
438                                    echo '<a class="wt-initial px-1" href="' . e($this->listUrl($tree, ['show_all_firstnames' => 'yes'] + $params)) . '" title="' . I18N::number($count) . '">' . I18N::translate('All') . '</a>';
439                                }
440                                echo '</li>';
441                            }
442                            echo '</ul>';
443                        }
444                    }
445                    if ($show === 'indi') {
446                        if ($this->families) {
447                            echo view('lists/families-table', [
448                                'families' => $this->families($tree, $surname, array_keys($all_surnames[$surname] ?? []), $falpha, $show_marnm === 'yes'),
449                                'tree'     => $tree,
450                            ]);
451                        } else {
452                            echo view('lists/individuals-table', [
453                                'individuals' => $this->individuals($tree, $surname, array_keys($all_surnames[$surname] ?? []), $falpha, $show_marnm === 'yes', false),
454                                'sosa'        => false,
455                                'tree'        => $tree,
456                            ]);
457                        }
458                    }
459                }
460            } ?>
461        </div>
462        <?php
463
464        $html = ob_get_clean();
465
466        return $this->viewResponse('modules/individual-list/page', [
467            'content' => $html,
468            'title'   => $title,
469            'tree'    => $tree,
470        ]);
471    }
472
473    /**
474     * Some initial letters have a special meaning
475     *
476     * @param string $initial
477     *
478     * @return string
479     */
480    protected function displayGivenNameInitial(string $initial): string
481    {
482        if ($initial === '@') {
483            return I18N::translateContext('Unknown given name', '…');
484        }
485
486        return e($initial);
487    }
488
489    /**
490     * Some initial letters have a special meaning
491     *
492     * @param string $initial
493     *
494     * @return string
495     */
496    protected function displaySurnameInitial(string $initial): string
497    {
498        if ($initial === '@') {
499            return I18N::translateContext('Unknown surname', '…');
500        }
501
502        if ($initial === ',') {
503            return I18N::translate('No surname');
504        }
505
506        return e($initial);
507    }
508
509    /**
510     * Restrict a query to individuals that are a spouse in a family record.
511     *
512     * @param bool    $fams
513     * @param Builder $query
514     */
515    protected function whereFamily(bool $fams, Builder $query): void
516    {
517        if ($fams) {
518            $query->join('link', static function (JoinClause $join): void {
519                $join
520                    ->on('l_from', '=', 'n_id')
521                    ->on('l_file', '=', 'n_file')
522                    ->where('l_type', '=', 'FAMS');
523            });
524        }
525    }
526
527    /**
528     * Restrict a query to include/exclude married names.
529     *
530     * @param bool    $marnm
531     * @param Builder $query
532     */
533    protected function whereMarriedName(bool $marnm, Builder $query): void
534    {
535        if (!$marnm) {
536            $query->where('n_type', '<>', '_MARNM');
537        }
538    }
539
540    /**
541     * Get a count of individuals with each initial letter
542     *
543     * @param Tree          $tree
544     * @param array<string> $surns if set, only consider people with this surname
545     * @param bool          $marnm if set, include married names
546     * @param bool          $fams  if set, only consider individuals with FAMS records
547     *
548     * @return array<int>
549     */
550    public function givenNameInitials(Tree $tree, array $surns, bool $marnm, bool $fams): array
551    {
552        $initials = [];
553
554        // Ensure our own language comes before others.
555        foreach (I18N::language()->alphabet() as $initial) {
556            $initials[$initial] = 0;
557        }
558
559        $query = DB::table('name')
560            ->where('n_file', '=', $tree->id());
561
562        $this->whereFamily($fams, $query);
563        $this->whereMarriedName($marnm, $query);
564
565        if ($surns !== []) {
566            $query->whereIn('n_surn', $surns);
567        }
568
569        $query
570            ->select([$this->binaryColumn('n_givn', 'n_givn'), new Expression('COUNT(*) AS count')])
571            ->groupBy([$this->binaryColumn('n_givn')]);
572
573        foreach ($query->get() as $row) {
574            $initial = I18N::strtoupper(I18N::language()->initialLetter($row->n_givn));
575            $initials[$initial] ??= 0;
576            $initials[$initial] += (int) $row->count;
577        }
578
579        $count_unknown = $initials['@'] ?? 0;
580
581        if ($count_unknown > 0) {
582            unset($initials['@']);
583            $initials['@'] = $count_unknown;
584        }
585
586        return $initials;
587    }
588
589    /**
590     * Get a count of all surnames and variants.
591     *
592     * @param Tree $tree
593     * @param bool $marnm if set, include married names
594     * @param bool $fams  if set, only consider individuals with FAMS records
595     *
596     * @return array<array<int>>
597     */
598    protected function allSurnames(Tree $tree, bool $marnm, bool $fams): array
599    {
600        $query = DB::table('name')
601            ->where('n_file', '=', $tree->id())
602            ->whereNotNull('n_surn') // Filters old records for sources, repositories, etc.
603            ->whereNotNull('n_surname')
604            ->select([
605                $this->binaryColumn('n_surn', 'n_surn'),
606                $this->binaryColumn('n_surname', 'n_surname'),
607                new Expression('COUNT(*) AS total'),
608            ]);
609
610        $this->whereFamily($fams, $query);
611        $this->whereMarriedName($marnm, $query);
612
613        $query->groupBy([
614            $this->binaryColumn('n_surn'),
615            $this->binaryColumn('n_surname'),
616        ]);
617
618        /** @var array<array<int>> $list */
619        $list = [];
620
621        foreach ($query->get() as $row) {
622            $row->n_surn = $row->n_surn === '' ? $row->n_surname : $row->n_surn;
623            $row->n_surn = I18N::strtoupper(I18N::language()->normalize($row->n_surn));
624
625            $list[$row->n_surn][$row->n_surname] ??= 0;
626            $list[$row->n_surn][$row->n_surname] += (int) $row->total;
627        }
628
629        uksort($list, I18N::comparator());
630
631        return $list;
632    }
633
634    /**
635     * Extract initial letters and counts for all surnames.
636     *
637     * @param array<array<int>> $all_surnames
638     *
639     * @return array<int>
640     */
641    protected function surnameInitials(array $all_surnames): array
642    {
643        $initials = [];
644
645        // Ensure our own language comes before others.
646        foreach (I18N::language()->alphabet() as $initial) {
647            $initials[$initial] = 0;
648        }
649
650        foreach ($all_surnames as $surn => $surnames) {
651            $initial = I18N::language()->initialLetter((string) $surn);
652
653            $initials[$initial] ??= 0;
654            $initials[$initial] += array_sum($surnames);
655        }
656
657        // Move specials to the end
658        $count_none = $initials[''] ?? 0;
659
660        if ($count_none > 0) {
661            unset($initials['']);
662            $initials[','] = $count_none;
663        }
664
665        $count_unknown = $initials['@'] ?? 0;
666
667        if ($count_unknown > 0) {
668            unset($initials['@']);
669            $initials['@'] = $count_unknown;
670        }
671
672        return $initials;
673    }
674
675    /**
676     * Fetch a list of individuals with specified names
677     * To search for unknown names, use $surn="@N.N.", $salpha="@" or $galpha="@"
678     * To search for names with no surnames, use $salpha=","
679     *
680     * @param Tree            $tree
681     * @param string          $surname  if set, only fetch people with this n_surn
682     * @param array<string>   $surnames if set, only fetch people with this n_surname
683     * @param string          $galpha   if set, only fetch given names starting with this letter
684     * @param bool            $marnm    if set, include married names
685     * @param bool            $fams     if set, only fetch individuals with FAMS records
686     *
687     * @return Collection<int,Individual>
688     */
689    protected function individuals(Tree $tree, string $surname, array $surnames, string $galpha, bool $marnm, bool $fams): Collection
690    {
691        $query = DB::table('individuals')
692            ->join('name', static function (JoinClause $join): void {
693                $join
694                    ->on('n_id', '=', 'i_id')
695                    ->on('n_file', '=', 'i_file');
696            })
697            ->where('i_file', '=', $tree->id())
698            ->select(['i_id AS xref', 'i_gedcom AS gedcom', 'n_givn', 'n_surn']);
699
700        $this->whereFamily($fams, $query);
701        $this->whereMarriedName($marnm, $query);
702
703        if ($surnames === []) {
704            // SURN, with no surname
705            $query->where('n_surn', '=', $surname);
706        } else {
707            $query->whereIn($this->binaryColumn('n_surname'), $surnames);
708        }
709
710        $query
711            ->orderBy(new Expression("CASE n_surn WHEN '" . Individual::NOMEN_NESCIO . "' THEN 1 ELSE 0 END"))
712            ->orderBy('n_surn')
713            ->orderBy(new Expression("CASE n_givn WHEN '" . Individual::NOMEN_NESCIO . "' THEN 1 ELSE 0 END"))
714            ->orderBy('n_givn');
715
716        $individuals = new Collection();
717
718        foreach ($query->get() as $row) {
719            $individual = Registry::individualFactory()->make($row->xref, $tree, $row->gedcom);
720            assert($individual instanceof Individual);
721
722            // The name from the database may be private - check the filtered list...
723            foreach ($individual->getAllNames() as $n => $name) {
724                if ($name['givn'] === $row->n_givn && $name['surn'] === $row->n_surn) {
725                    if ($galpha === '' || I18N::strtoupper(I18N::language()->initialLetter($row->n_givn)) === $galpha) {
726                        $individual->setPrimaryName($n);
727                        // We need to clone $individual, as we may have multiple references to the
728                        // same individual in this list, and the "primary name" would otherwise
729                        // be shared amongst all of them.
730                        $individuals->push(clone $individual);
731                        break;
732                    }
733                }
734            }
735        }
736
737        return $individuals;
738    }
739
740    /**
741     * Fetch a list of families with specified names
742     * To search for unknown names, use $surn="@N.N.", $salpha="@" or $galpha="@"
743     * To search for names with no surnames, use $salpha=","
744     *
745     * @param Tree          $tree
746     * @param string        $surname  if set, only fetch people with this n_surn
747     * @param array<string> $surnames if set, only fetch people with this n_surname
748     * @param string        $galpha   if set, only fetch given names starting with this letter
749     * @param bool          $marnm    if set, include married names
750     *
751     * @return Collection<int,Family>
752     */
753    protected function families(Tree $tree, string $surname, array $surnames, string $galpha, bool $marnm): Collection
754    {
755        $families = new Collection();
756
757        foreach ($this->individuals($tree, $surname, $surnames, $galpha, $marnm, true) as $indi) {
758            foreach ($indi->spouseFamilies() as $family) {
759                $families->push($family);
760            }
761        }
762
763        return $families->unique();
764    }
765
766    /**
767     * This module assumes the database will use binary collation on the name columns.
768     * Until we convert MySQL databases to use utf8_bin, we need to do this at run-time.
769     *
770     * @param string      $column
771     * @param string|null $alias
772     *
773     * @return Expression
774     */
775    private function binaryColumn(string $column, string $alias = null): Expression
776    {
777        if (DB::connection()->getDriverName() === 'mysql') {
778            $sql = 'CAST(' . $column . ' AS binary)';
779        } else {
780            $sql = $column;
781        }
782
783        if ($alias !== null) {
784            $sql .= ' AS ' . $alias;
785        }
786
787        return new Expression($sql);
788    }
789}
790