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168 lines (140 loc) · 6.02 KB
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<?php
namespace BookStack\References;
use BookStack\Entities\Models\Book;
use BookStack\Entities\Models\HasDescriptionInterface;
use BookStack\Entities\Models\Entity;
use BookStack\Entities\Models\Page;
use BookStack\Entities\Repos\RevisionRepo;
use BookStack\Util\HtmlDocument;
class ReferenceUpdater
{
public function __construct(
protected ReferenceFetcher $referenceFetcher,
protected RevisionRepo $revisionRepo,
) {
}
public function updateEntityReferences(Entity $entity, string $oldLink): void
{
$references = $this->getReferencesToUpdate($entity);
$newLink = $entity->getUrl();
foreach ($references as $reference) {
/** @var Entity $entity */
$entity = $reference->from;
$this->updateReferencesWithinEntity($entity, $oldLink, $newLink);
}
}
/**
* Change existing references for a range of entities using the given context.
*/
public function changeReferencesUsingContext(ReferenceChangeContext $context): void
{
$bindings = [];
foreach ($context->getOldEntities() as $old) {
$bindings[] = $old->getMorphClass();
$bindings[] = $old->id;
}
// No targets to update within the context, so no need to continue.
if (count($bindings) < 2) {
return;
}
$toReferenceQuery = '(to_type, to_id) IN (' . rtrim(str_repeat('(?,?),', count($bindings) / 2), ',') . ')';
// Cycle each new entity in the context
foreach ($context->getNewEntities() as $new) {
// For each, get all references from it which lead to other items within the context of the change
$newReferencesInContext = $new->referencesFrom()->whereRaw($toReferenceQuery, $bindings)->get();
// For each reference, update the URL and the reference entry
foreach ($newReferencesInContext as $reference) {
$oldToEntity = $reference->to;
$newToEntity = $context->getNewForOld($oldToEntity);
if ($newToEntity === null) {
continue;
}
$this->updateReferencesWithinEntity($new, $oldToEntity->getUrl(), $newToEntity->getUrl());
if ($newToEntity instanceof Page && $oldToEntity instanceof Page) {
$this->updateReferencesWithinEntity($new, $oldToEntity->getPermalink(), $newToEntity->getPermalink());
}
$reference->to_id = $newToEntity->id;
$reference->to_type = $newToEntity->getMorphClass();
$reference->save();
}
}
}
/**
* @return Reference[]
*/
protected function getReferencesToUpdate(Entity $entity): array
{
/** @var Reference[] $references */
$references = $this->referenceFetcher->getReferencesToEntity($entity, true)->values()->all();
if ($entity instanceof Book) {
$pages = $entity->pages()->get(['id']);
$chapters = $entity->chapters()->get(['id']);
$children = $pages->concat($chapters);
foreach ($children as $bookChild) {
/** @var Reference[] $childRefs */
$childRefs = $this->referenceFetcher->getReferencesToEntity($bookChild, true)->values()->all();
array_push($references, ...$childRefs);
}
}
$deduped = [];
foreach ($references as $reference) {
$key = $reference->from_id . ':' . $reference->from_type;
$deduped[$key] = $reference;
}
return array_values($deduped);
}
protected function updateReferencesWithinEntity(Entity $entity, string $oldLink, string $newLink): void
{
if ($entity instanceof Page) {
$this->updateReferencesWithinPage($entity, $oldLink, $newLink);
}
if ($entity instanceof HasDescriptionInterface) {
$this->updateReferencesWithinDescription($entity, $oldLink, $newLink);
}
}
protected function updateReferencesWithinDescription(Entity&HasDescriptionInterface $entity, string $oldLink, string $newLink): void
{
$description = $entity->descriptionInfo();
$html = $this->updateLinksInHtml($description->getHtml(true) ?: '', $oldLink, $newLink);
$description->set($html);
$entity->save();
}
protected function updateReferencesWithinPage(Page $page, string $oldLink, string $newLink): void
{
$page = (clone $page)->refresh();
$html = $this->updateLinksInHtml($page->html, $oldLink, $newLink);
$markdown = $this->updateLinksInMarkdown($page->markdown, $oldLink, $newLink);
$page->html = $html;
$page->markdown = $markdown;
$page->incrementRevisionCount();
$page->save();
$summary = trans('entities.pages_references_update_revision');
$this->revisionRepo->storeNewForPage($page, $summary);
}
protected function updateLinksInMarkdown(string $markdown, string $oldLink, string $newLink): string
{
if (empty($markdown)) {
return $markdown;
}
$commonLinkRegex = '/(\[.*?\]\()' . preg_quote($oldLink, '/') . '(.*?\))/i';
$markdown = preg_replace($commonLinkRegex, '$1' . $newLink . '$2', $markdown);
$referenceLinkRegex = '/(\[.*?\]:\s?)' . preg_quote($oldLink, '/') . '(.*?)($|\s)/i';
$markdown = preg_replace($referenceLinkRegex, '$1' . $newLink . '$2$3', $markdown);
return $markdown;
}
protected function updateLinksInHtml(string $html, string $oldLink, string $newLink): string
{
if (empty($html)) {
return $html;
}
$doc = new HtmlDocument($html);
$anchors = $doc->queryXPath('//a[@href]');
/** @var \DOMElement $anchor */
foreach ($anchors as $anchor) {
$link = $anchor->getAttribute('href');
$updated = str_ireplace($oldLink, $newLink, $link);
$anchor->setAttribute('href', $updated);
}
return $doc->getBodyInnerHtml();
}
}