509 lines
17 KiB
PHP
509 lines
17 KiB
PHP
<?php namespace BookStack\Entities\Repos;
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use BookStack\Entities\Book;
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use BookStack\Entities\Chapter;
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use BookStack\Entities\Entity;
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use BookStack\Entities\Page;
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use BookStack\Entities\PageRevision;
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use Carbon\Carbon;
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use DOMDocument;
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use DOMXPath;
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class PageRepo extends EntityRepo
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{
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/**
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* Get page by slug.
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* @param string $pageSlug
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* @param string $bookSlug
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* @return Page
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* @throws \BookStack\Exceptions\NotFoundException
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*/
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public function getPageBySlug(string $pageSlug, string $bookSlug)
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{
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return $this->getBySlug('page', $pageSlug, $bookSlug);
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}
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/**
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* Search through page revisions and retrieve the last page in the
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* current book that has a slug equal to the one given.
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* @param string $pageSlug
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* @param string $bookSlug
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* @return null|Page
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*/
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public function getPageByOldSlug(string $pageSlug, string $bookSlug)
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{
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$revision = $this->entityProvider->pageRevision->where('slug', '=', $pageSlug)
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->whereHas('page', function ($query) {
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$this->permissionService->enforceEntityRestrictions('page', $query);
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})
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->where('type', '=', 'version')
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->where('book_slug', '=', $bookSlug)
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->orderBy('created_at', 'desc')
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->with('page')->first();
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return $revision !== null ? $revision->page : null;
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}
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/**
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* Updates a page with any fillable data and saves it into the database.
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* @param Page $page
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* @param int $book_id
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* @param array $input
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* @return Page
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* @throws \Exception
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*/
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public function updatePage(Page $page, int $book_id, array $input)
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{
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// Hold the old details to compare later
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$oldHtml = $page->html;
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$oldName = $page->name;
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// Prevent slug being updated if no name change
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if ($page->name !== $input['name']) {
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$page->slug = $this->findSuitableSlug('page', $input['name'], $page->id, $book_id);
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}
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// Save page tags if present
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if (isset($input['tags'])) {
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$this->tagRepo->saveTagsToEntity($page, $input['tags']);
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}
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// Update with new details
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$userId = user()->id;
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$page->fill($input);
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$page->html = $this->formatHtml($input['html']);
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$page->text = $this->pageToPlainText($page);
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if (setting('app-editor') !== 'markdown') {
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$page->markdown = '';
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}
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$page->updated_by = $userId;
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$page->revision_count++;
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$page->save();
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// Remove all update drafts for this user & page.
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$this->userUpdatePageDraftsQuery($page, $userId)->delete();
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// Save a revision after updating
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if ($oldHtml !== $input['html'] || $oldName !== $input['name'] || $input['summary'] !== null) {
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$this->savePageRevision($page, $input['summary']);
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}
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$this->searchService->indexEntity($page);
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return $page;
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}
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/**
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* Saves a page revision into the system.
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* @param Page $page
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* @param null|string $summary
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* @return PageRevision
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* @throws \Exception
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*/
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public function savePageRevision(Page $page, string $summary = null)
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{
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$revision = $this->entityProvider->pageRevision->newInstance($page->toArray());
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if (setting('app-editor') !== 'markdown') {
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$revision->markdown = '';
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}
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$revision->page_id = $page->id;
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$revision->slug = $page->slug;
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$revision->book_slug = $page->book->slug;
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$revision->created_by = user()->id;
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$revision->created_at = $page->updated_at;
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$revision->type = 'version';
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$revision->summary = $summary;
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$revision->revision_number = $page->revision_count;
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$revision->save();
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$revisionLimit = config('app.revision_limit');
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if ($revisionLimit !== false) {
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$revisionsToDelete = $this->entityProvider->pageRevision->where('page_id', '=', $page->id)
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->orderBy('created_at', 'desc')->skip(intval($revisionLimit))->take(10)->get(['id']);
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if ($revisionsToDelete->count() > 0) {
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$this->entityProvider->pageRevision->whereIn('id', $revisionsToDelete->pluck('id'))->delete();
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}
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}
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return $revision;
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}
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/**
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* Formats a page's html to be tagged correctly
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* within the system.
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* @param string $htmlText
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* @return string
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*/
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protected function formatHtml(string $htmlText)
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{
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if ($htmlText == '') {
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return $htmlText;
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}
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libxml_use_internal_errors(true);
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$doc = new DOMDocument();
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$doc->loadHTML(mb_convert_encoding($htmlText, 'HTML-ENTITIES', 'UTF-8'));
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$container = $doc->documentElement;
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$body = $container->childNodes->item(0);
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$childNodes = $body->childNodes;
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// Ensure no duplicate ids are used
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$idArray = [];
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foreach ($childNodes as $index => $childNode) {
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/** @var \DOMElement $childNode */
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if (get_class($childNode) !== 'DOMElement') {
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continue;
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}
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// Overwrite id if not a BookStack custom id
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if ($childNode->hasAttribute('id')) {
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$id = $childNode->getAttribute('id');
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if (strpos($id, 'bkmrk') === 0 && array_search($id, $idArray) === false) {
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$idArray[] = $id;
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continue;
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};
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}
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// Create an unique id for the element
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// Uses the content as a basis to ensure output is the same every time
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// the same content is passed through.
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$contentId = 'bkmrk-' . substr(strtolower(preg_replace('/\s+/', '-', trim($childNode->nodeValue))), 0, 20);
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$newId = urlencode($contentId);
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$loopIndex = 0;
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while (in_array($newId, $idArray)) {
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$newId = urlencode($contentId . '-' . $loopIndex);
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$loopIndex++;
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}
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$childNode->setAttribute('id', $newId);
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$idArray[] = $newId;
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}
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// Generate inner html as a string
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$html = '';
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foreach ($childNodes as $childNode) {
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$html .= $doc->saveHTML($childNode);
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}
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return $html;
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}
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/**
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* Get the plain text version of a page's content.
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* @param \BookStack\Entities\Page $page
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* @return string
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*/
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protected function pageToPlainText(Page $page) : string
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{
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$html = $this->renderPage($page, true);
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return strip_tags($html);
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}
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/**
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* Get a new draft page instance.
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* @param Book $book
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* @param Chapter|null $chapter
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* @return \BookStack\Entities\Page
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* @throws \Throwable
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*/
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public function getDraftPage(Book $book, Chapter $chapter = null)
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{
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$page = $this->entityProvider->page->newInstance();
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$page->name = trans('entities.pages_initial_name');
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$page->created_by = user()->id;
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$page->updated_by = user()->id;
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$page->draft = true;
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if ($chapter) {
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$page->chapter_id = $chapter->id;
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}
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$book->pages()->save($page);
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$page = $this->entityProvider->page->find($page->id);
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$this->permissionService->buildJointPermissionsForEntity($page);
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return $page;
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}
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/**
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* Save a page update draft.
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* @param Page $page
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* @param array $data
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* @return PageRevision|Page
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*/
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public function updatePageDraft(Page $page, array $data = [])
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{
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// If the page itself is a draft simply update that
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if ($page->draft) {
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$page->fill($data);
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if (isset($data['html'])) {
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$page->text = $this->pageToPlainText($page);
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}
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$page->save();
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return $page;
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}
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// Otherwise save the data to a revision
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$userId = user()->id;
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$drafts = $this->userUpdatePageDraftsQuery($page, $userId)->get();
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if ($drafts->count() > 0) {
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$draft = $drafts->first();
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} else {
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$draft = $this->entityProvider->pageRevision->newInstance();
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$draft->page_id = $page->id;
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$draft->slug = $page->slug;
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$draft->book_slug = $page->book->slug;
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$draft->created_by = $userId;
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$draft->type = 'update_draft';
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}
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$draft->fill($data);
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if (setting('app-editor') !== 'markdown') {
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$draft->markdown = '';
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}
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$draft->save();
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return $draft;
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}
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/**
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* Publish a draft page to make it a normal page.
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* Sets the slug and updates the content.
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* @param Page $draftPage
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* @param array $input
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* @return Page
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* @throws \Exception
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*/
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public function publishPageDraft(Page $draftPage, array $input)
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{
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$draftPage->fill($input);
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// Save page tags if present
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if (isset($input['tags'])) {
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$this->tagRepo->saveTagsToEntity($draftPage, $input['tags']);
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}
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$draftPage->slug = $this->findSuitableSlug('page', $draftPage->name, false, $draftPage->book->id);
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$draftPage->html = $this->formatHtml($input['html']);
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$draftPage->text = $this->pageToPlainText($draftPage);
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$draftPage->draft = false;
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$draftPage->revision_count = 1;
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$draftPage->save();
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$this->savePageRevision($draftPage, trans('entities.pages_initial_revision'));
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$this->searchService->indexEntity($draftPage);
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return $draftPage;
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}
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/**
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* The base query for getting user update drafts.
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* @param Page $page
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* @param $userId
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* @return mixed
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*/
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protected function userUpdatePageDraftsQuery(Page $page, int $userId)
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{
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return $this->entityProvider->pageRevision->where('created_by', '=', $userId)
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->where('type', 'update_draft')
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->where('page_id', '=', $page->id)
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->orderBy('created_at', 'desc');
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}
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/**
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* Get the latest updated draft revision for a particular page and user.
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* @param Page $page
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* @param $userId
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* @return PageRevision|null
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*/
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public function getUserPageDraft(Page $page, int $userId)
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{
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return $this->userUpdatePageDraftsQuery($page, $userId)->first();
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}
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/**
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* Get the notification message that informs the user that they are editing a draft page.
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* @param PageRevision $draft
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* @return string
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*/
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public function getUserPageDraftMessage(PageRevision $draft)
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{
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$message = trans('entities.pages_editing_draft_notification', ['timeDiff' => $draft->updated_at->diffForHumans()]);
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if ($draft->page->updated_at->timestamp <= $draft->updated_at->timestamp) {
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return $message;
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}
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return $message . "\n" . trans('entities.pages_draft_edited_notification');
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}
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/**
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* A query to check for active update drafts on a particular page.
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* @param Page $page
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* @param int $minRange
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* @return mixed
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*/
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protected function activePageEditingQuery(Page $page, int $minRange = null)
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{
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$query = $this->entityProvider->pageRevision->where('type', '=', 'update_draft')
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->where('page_id', '=', $page->id)
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->where('updated_at', '>', $page->updated_at)
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->where('created_by', '!=', user()->id)
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->with('createdBy');
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if ($minRange !== null) {
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$query = $query->where('updated_at', '>=', Carbon::now()->subMinutes($minRange));
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}
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return $query;
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}
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/**
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* Check if a page is being actively editing.
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* Checks for edits since last page updated.
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* Passing in a minuted range will check for edits
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* within the last x minutes.
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* @param Page $page
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* @param int $minRange
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* @return bool
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*/
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public function isPageEditingActive(Page $page, int $minRange = null)
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{
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$draftSearch = $this->activePageEditingQuery($page, $minRange);
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return $draftSearch->count() > 0;
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}
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/**
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* Get a notification message concerning the editing activity on a particular page.
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* @param Page $page
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* @param int $minRange
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* @return string
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*/
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public function getPageEditingActiveMessage(Page $page, int $minRange = null)
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{
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$pageDraftEdits = $this->activePageEditingQuery($page, $minRange)->get();
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$userMessage = $pageDraftEdits->count() > 1 ? trans('entities.pages_draft_edit_active.start_a', ['count' => $pageDraftEdits->count()]): trans('entities.pages_draft_edit_active.start_b', ['userName' => $pageDraftEdits->first()->createdBy->name]);
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$timeMessage = $minRange === null ? trans('entities.pages_draft_edit_active.time_a') : trans('entities.pages_draft_edit_active.time_b', ['minCount'=>$minRange]);
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return trans('entities.pages_draft_edit_active.message', ['start' => $userMessage, 'time' => $timeMessage]);
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}
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/**
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* Parse the headers on the page to get a navigation menu
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* @param string $pageContent
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* @return array
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*/
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public function getPageNav(string $pageContent)
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{
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if ($pageContent == '') {
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return [];
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}
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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($pageContent, 'HTML-ENTITIES', 'UTF-8'));
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$xPath = new DOMXPath($doc);
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$headers = $xPath->query("//h1|//h2|//h3|//h4|//h5|//h6");
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if (is_null($headers)) {
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return [];
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}
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$tree = collect([]);
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foreach ($headers as $header) {
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$text = $header->nodeValue;
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$tree->push([
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'nodeName' => strtolower($header->nodeName),
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'level' => intval(str_replace('h', '', $header->nodeName)),
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'link' => '#' . $header->getAttribute('id'),
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'text' => strlen($text) > 30 ? substr($text, 0, 27) . '...' : $text
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]);
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}
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// Normalise headers if only smaller headers have been used
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if (count($tree) > 0) {
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$minLevel = $tree->pluck('level')->min();
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$tree = $tree->map(function ($header) use ($minLevel) {
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$header['level'] -= ($minLevel - 2);
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return $header;
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});
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}
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return $tree->toArray();
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}
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/**
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* Restores a revision's content back into a page.
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* @param Page $page
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* @param Book $book
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* @param int $revisionId
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* @return Page
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* @throws \Exception
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*/
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public function restorePageRevision(Page $page, Book $book, int $revisionId)
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{
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$page->revision_count++;
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$this->savePageRevision($page);
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$revision = $page->revisions()->where('id', '=', $revisionId)->first();
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$page->fill($revision->toArray());
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$page->slug = $this->findSuitableSlug('page', $page->name, $page->id, $book->id);
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$page->text = $this->pageToPlainText($page);
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$page->updated_by = user()->id;
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$page->save();
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$this->searchService->indexEntity($page);
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return $page;
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}
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/**
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* Change the page's parent to the given entity.
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* @param Page $page
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* @param Entity $parent
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* @throws \Throwable
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*/
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public function changePageParent(Page $page, Entity $parent)
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{
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$book = $parent->isA('book') ? $parent : $parent->book;
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$page->chapter_id = $parent->isA('chapter') ? $parent->id : 0;
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$page->save();
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if ($page->book->id !== $book->id) {
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$page = $this->changeBook('page', $book->id, $page);
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}
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$page->load('book');
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$this->permissionService->buildJointPermissionsForEntity($book);
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}
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/**
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* Create a copy of a page in a new location with a new name.
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* @param \BookStack\Entities\Page $page
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* @param \BookStack\Entities\Entity $newParent
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* @param string $newName
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* @return \BookStack\Entities\Page
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* @throws \Throwable
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*/
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public function copyPage(Page $page, Entity $newParent, string $newName = '')
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{
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$newBook = $newParent->isA('book') ? $newParent : $newParent->book;
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$newChapter = $newParent->isA('chapter') ? $newParent : null;
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$copyPage = $this->getDraftPage($newBook, $newChapter);
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$pageData = $page->getAttributes();
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// Update name
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if (!empty($newName)) {
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$pageData['name'] = $newName;
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}
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// Copy tags from previous page if set
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if ($page->tags) {
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$pageData['tags'] = [];
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foreach ($page->tags as $tag) {
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$pageData['tags'][] = ['name' => $tag->name, 'value' => $tag->value];
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}
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}
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// Set priority
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if ($newParent->isA('chapter')) {
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$pageData['priority'] = $this->getNewChapterPriority($newParent);
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} else {
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$pageData['priority'] = $this->getNewBookPriority($newParent);
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}
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return $this->publishPageDraft($copyPage, $pageData);
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}
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}
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