2022-08-20 16:09:07 -04:00
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<?php
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namespace BookStack\References;
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2022-08-30 17:00:32 -04:00
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use BookStack\Entities\Models\Book;
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2022-08-20 16:09:07 -04:00
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use BookStack\Entities\Models\Entity;
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use BookStack\Entities\Models\Page;
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use BookStack\Entities\Repos\RevisionRepo;
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2022-08-21 06:29:34 -04:00
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use DOMDocument;
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use DOMXPath;
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2022-08-20 16:09:07 -04:00
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2022-08-21 13:05:19 -04:00
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class ReferenceUpdater
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2022-08-20 16:09:07 -04:00
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{
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protected ReferenceFetcher $referenceFetcher;
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protected RevisionRepo $revisionRepo;
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public function __construct(ReferenceFetcher $referenceFetcher, RevisionRepo $revisionRepo)
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{
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$this->referenceFetcher = $referenceFetcher;
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$this->revisionRepo = $revisionRepo;
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}
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public function updateEntityPageReferences(Entity $entity, string $oldLink)
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{
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2022-08-30 17:00:32 -04:00
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$references = $this->getReferencesToUpdate($entity);
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2022-08-20 16:09:07 -04:00
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$newLink = $entity->getUrl();
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/** @var Reference $reference */
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foreach ($references as $reference) {
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/** @var Page $page */
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$page = $reference->from;
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$this->updateReferencesWithinPage($page, $oldLink, $newLink);
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}
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}
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2022-08-30 17:00:32 -04:00
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/**
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* @return Reference[]
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*/
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protected function getReferencesToUpdate(Entity $entity): array
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{
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/** @var Reference[] $references */
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$references = $this->referenceFetcher->getPageReferencesToEntity($entity)->values()->all();
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if ($entity instanceof Book) {
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$pages = $entity->pages()->get(['id']);
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$chapters = $entity->chapters()->get(['id']);
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$children = $pages->concat($chapters);
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foreach ($children as $bookChild) {
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$childRefs = $this->referenceFetcher->getPageReferencesToEntity($bookChild)->values()->all();
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array_push($references, ...$childRefs);
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}
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}
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$deduped = [];
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foreach ($references as $reference) {
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$key = $reference->from_id . ':' . $reference->from_type;
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$deduped[$key] = $reference;
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}
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return array_values($deduped);
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}
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2022-08-20 16:09:07 -04:00
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protected function updateReferencesWithinPage(Page $page, string $oldLink, string $newLink)
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{
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$page = (clone $page)->refresh();
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2022-08-21 06:29:34 -04:00
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$html = $this->updateLinksInHtml($page->html, $oldLink, $newLink);
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$markdown = $this->updateLinksInMarkdown($page->markdown, $oldLink, $newLink);
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2022-08-20 16:09:07 -04:00
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$page->html = $html;
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$page->markdown = $markdown;
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$page->revision_count++;
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$page->save();
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2022-08-21 06:29:34 -04:00
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$summary = trans('entities.pages_references_update_revision');
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$this->revisionRepo->storeNewForPage($page, $summary);
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}
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protected function updateLinksInMarkdown(string $markdown, string $oldLink, string $newLink): string
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{
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if (empty($markdown)) {
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return $markdown;
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}
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2022-08-21 13:05:19 -04:00
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$commonLinkRegex = '/(\[.*?\]\()' . preg_quote($oldLink, '/') . '(.*?\))/i';
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2022-08-21 06:29:34 -04:00
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$markdown = preg_replace($commonLinkRegex, '$1' . $newLink . '$2', $markdown);
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2022-08-21 13:05:19 -04:00
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$referenceLinkRegex = '/(\[.*?\]:\s?)' . preg_quote($oldLink, '/') . '(.*?)($|\s)/i';
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$markdown = preg_replace($referenceLinkRegex, '$1' . $newLink . '$2$3', $markdown);
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return $markdown;
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}
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protected function updateLinksInHtml(string $html, string $oldLink, string $newLink): string
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{
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if (empty($html)) {
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return $html;
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}
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$html = '<body>' . $html . '</body>';
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libxml_use_internal_errors(true);
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$doc = new DOMDocument();
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$doc->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
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$xPath = new DOMXPath($doc);
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$anchors = $xPath->query('//a[@href]');
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/** @var \DOMElement $anchor */
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foreach ($anchors as $anchor) {
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$link = $anchor->getAttribute('href');
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$updated = str_ireplace($oldLink, $newLink, $link);
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$anchor->setAttribute('href', $updated);
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}
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$html = '';
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$topElems = $doc->documentElement->childNodes->item(0)->childNodes;
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foreach ($topElems as $child) {
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$html .= $doc->saveHTML($child);
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}
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return $html;
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}
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2022-08-29 12:46:41 -04:00
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}
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