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<?php
/**
* webtrees: online genealogy
* Copyright (C) 2026 webtrees development team
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
declare(strict_types=1);
namespace Fisharebest\Webtrees\Module;
use Fisharebest\Webtrees\GedcomRecord;
use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Services\DataFixService;
use Fisharebest\Webtrees\Tree;
use Illuminate\Support\Collection;
use function preg_match;
use function preg_replace;
class FixDuplicateLinks extends AbstractModule implements ModuleDataFixInterface
{
use ModuleDataFixTrait;
private DataFixService $data_fix_service;
/**
* @param DataFixService $data_fix_service
*/
public function __construct(DataFixService $data_fix_service)
{
$this->data_fix_service = $data_fix_service;
}
public function title(): string
{
/* I18N: Name of a module */
return I18N::translate('Remove duplicate links');
}
public function description(): string
{
/* I18N: Description of a “Data fix” module */
return I18N::translate('A common error is to have multiple links to the same record, for example listing the same child more than once in a family record.');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string> $params
*
* @return Collection<int,string>
*/
protected function familiesToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->familiesToFixQuery($tree, $params)
->pluck('f_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>|null
*/
protected function individualsToFix(Tree $tree, array $params): Collection|null
{
// No DB querying possible? Select all.
return $this->individualsToFixQuery($tree, $params)
->pluck('i_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>
*/
protected function mediaToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->mediaToFixQuery($tree, $params)
->pluck('m_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>
*/
protected function notesToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->notesToFixQuery($tree, $params)
->pluck('o_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>
*/
protected function repositoriesToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->repositoriesToFixQuery($tree, $params)
->pluck('o_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>
*/
protected function sourcesToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->sourcesToFixQuery($tree, $params)
->pluck('s_id');
}
/**
* A list of all records that need examining. This may include records
* that do not need updating, if we can't detect this quickly using SQL.
*
* @param Tree $tree
* @param array<string,string> $params
*
* @return Collection<int,string>
*/
protected function submittersToFix(Tree $tree, array $params): Collection
{
// No DB querying possible? Select all.
return $this->submittersToFixQuery($tree, $params)
->pluck('o_id');
}
/**
* Does a record need updating?
*
* @param GedcomRecord $record
* @param array<string,string> $params
*
* @return bool
*/
public function doesRecordNeedUpdate(GedcomRecord $record, array $params): bool
{
$gedcom = $record->gedcom();
return
preg_match('/(\n1.*@.+@.*(?:\n[2-9].*)*)(?:\n1.*(?:\n[2-9].*)*)*\1/', $gedcom) ||
preg_match('/(\n2.*@.+@.*(?:\n[3-9].*)*)(?:\n2.*(?:\n[3-9].*)*)*\1/', $gedcom) ||
preg_match('/(\n3.*@.+@.*(?:\n[4-9].*)*)(?:\n3.*(?:\n[4-9].*)*)*\1/', $gedcom);
}
/**
* Show the changes we would make
*
* @param GedcomRecord $record
* @param array<string,string> $params
*
* @return string
*/
public function previewUpdate(GedcomRecord $record, array $params): string
{
$old = $record->gedcom();
$new = $this->updateGedcom($record);
return $this->data_fix_service->gedcomDiff($record->tree(), $old, $new);
}
/**
* Fix a record
*
* @param GedcomRecord $record
* @param array<string,string> $params
*
* @return void
*/
public function updateRecord(GedcomRecord $record, array $params): void
{
$record->updateRecord($this->updateGedcom($record), false);
}
/**
* @param GedcomRecord $record
*
* @return string
*/
private function updateGedcom(GedcomRecord $record): string
{
$gedcom = $record->gedcom();
$gedcom = preg_replace('/(\n1.*@.+@.*(?:\n[2-9].*)*)((?:\n1.*(?:\n[2-9].*)*)*\1)/', '$2', $gedcom);
$gedcom = preg_replace('/(\n2.*@.+@.*(?:\n[3-9].*)*)((?:\n2.*(?:\n[3-9].*)*)*\1)/', '$2', $gedcom);
return preg_replace('/(\n3.*@.+@.*(?:\n[4-9].*)*)((?:\n3.*(?:\n[4-9].*)*)*\1)/', '$2', $gedcom);
}
}
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