BookStack/app/Entities/Repos/PageRepo.php
Dan Brown de3e9ab094
Added ability to use templates
- Added replace, append and prepend actions for template content into
both the WYSIWYG editor and markdown editor.
- Added further testing to cover.
2019-08-11 20:04:43 +01:00

562 lines
18 KiB
PHP

<?php namespace BookStack\Entities\Repos;
use BookStack\Entities\Book;
use BookStack\Entities\Chapter;
use BookStack\Entities\Entity;
use BookStack\Entities\Page;
use BookStack\Entities\PageRevision;
use Carbon\Carbon;
use DOMDocument;
use DOMElement;
use DOMXPath;
use Illuminate\Support\Collection;
class PageRepo extends EntityRepo
{
/**
* Get page by slug.
* @param string $pageSlug
* @param string $bookSlug
* @return Page
* @throws \BookStack\Exceptions\NotFoundException
*/
public function getPageBySlug(string $pageSlug, string $bookSlug)
{
return $this->getBySlug('page', $pageSlug, $bookSlug);
}
/**
* Search through page revisions and retrieve the last page in the
* current book that has a slug equal to the one given.
* @param string $pageSlug
* @param string $bookSlug
* @return null|Page
*/
public function getPageByOldSlug(string $pageSlug, string $bookSlug)
{
$revision = $this->entityProvider->pageRevision->where('slug', '=', $pageSlug)
->whereHas('page', function ($query) {
$this->permissionService->enforceEntityRestrictions('page', $query);
})
->where('type', '=', 'version')
->where('book_slug', '=', $bookSlug)
->orderBy('created_at', 'desc')
->with('page')->first();
return $revision !== null ? $revision->page : null;
}
/**
* Updates a page with any fillable data and saves it into the database.
* @param Page $page
* @param int $book_id
* @param array $input
* @return Page
* @throws \Exception
*/
public function updatePage(Page $page, int $book_id, array $input)
{
// Hold the old details to compare later
$oldHtml = $page->html;
$oldName = $page->name;
// Prevent slug being updated if no name change
if ($page->name !== $input['name']) {
$page->slug = $this->findSuitableSlug('page', $input['name'], $page->id, $book_id);
}
// Save page tags if present
if (isset($input['tags'])) {
$this->tagRepo->saveTagsToEntity($page, $input['tags']);
}
if (isset($input['template']) && userCan('templates-manage')) {
$page->template = ($input['template'] === 'true');
}
// Update with new details
$userId = user()->id;
$page->fill($input);
$page->html = $this->formatHtml($input['html']);
$page->text = $this->pageToPlainText($page);
if (setting('app-editor') !== 'markdown') {
$page->markdown = '';
}
$page->updated_by = $userId;
$page->revision_count++;
$page->save();
// Remove all update drafts for this user & page.
$this->userUpdatePageDraftsQuery($page, $userId)->delete();
// Save a revision after updating
$summary = $input['summary'] ?? null;
if ($oldHtml !== $input['html'] || $oldName !== $input['name'] || $summary !== null) {
$this->savePageRevision($page, $summary);
}
$this->searchService->indexEntity($page);
return $page;
}
/**
* Saves a page revision into the system.
* @param Page $page
* @param null|string $summary
* @return PageRevision
* @throws \Exception
*/
public function savePageRevision(Page $page, string $summary = null)
{
$revision = $this->entityProvider->pageRevision->newInstance($page->toArray());
if (setting('app-editor') !== 'markdown') {
$revision->markdown = '';
}
$revision->page_id = $page->id;
$revision->slug = $page->slug;
$revision->book_slug = $page->book->slug;
$revision->created_by = user()->id;
$revision->created_at = $page->updated_at;
$revision->type = 'version';
$revision->summary = $summary;
$revision->revision_number = $page->revision_count;
$revision->save();
$revisionLimit = config('app.revision_limit');
if ($revisionLimit !== false) {
$revisionsToDelete = $this->entityProvider->pageRevision->where('page_id', '=', $page->id)
->orderBy('created_at', 'desc')->skip(intval($revisionLimit))->take(10)->get(['id']);
if ($revisionsToDelete->count() > 0) {
$this->entityProvider->pageRevision->whereIn('id', $revisionsToDelete->pluck('id'))->delete();
}
}
return $revision;
}
/**
* Formats a page's html to be tagged correctly within the system.
* @param string $htmlText
* @return string
*/
protected function formatHtml(string $htmlText)
{
if ($htmlText == '') {
return $htmlText;
}
libxml_use_internal_errors(true);
$doc = new DOMDocument();
$doc->loadHTML(mb_convert_encoding($htmlText, 'HTML-ENTITIES', 'UTF-8'));
$container = $doc->documentElement;
$body = $container->childNodes->item(0);
$childNodes = $body->childNodes;
// Set ids on top-level nodes
$idMap = [];
foreach ($childNodes as $index => $childNode) {
$this->setUniqueId($childNode, $idMap);
}
// Ensure no duplicate ids within child items
$xPath = new DOMXPath($doc);
$idElems = $xPath->query('//body//*//*[@id]');
foreach ($idElems as $domElem) {
$this->setUniqueId($domElem, $idMap);
}
// Generate inner html as a string
$html = '';
foreach ($childNodes as $childNode) {
$html .= $doc->saveHTML($childNode);
}
return $html;
}
/**
* Set a unique id on the given DOMElement.
* A map for existing ID's should be passed in to check for current existence.
* @param DOMElement $element
* @param array $idMap
*/
protected function setUniqueId($element, array &$idMap)
{
if (get_class($element) !== 'DOMElement') {
return;
}
// Overwrite id if not a BookStack custom id
$existingId = $element->getAttribute('id');
if (strpos($existingId, 'bkmrk') === 0 && !isset($idMap[$existingId])) {
$idMap[$existingId] = true;
return;
}
// Create an unique id for the element
// Uses the content as a basis to ensure output is the same every time
// the same content is passed through.
$contentId = 'bkmrk-' . mb_substr(strtolower(preg_replace('/\s+/', '-', trim($element->nodeValue))), 0, 20);
$newId = urlencode($contentId);
$loopIndex = 0;
while (isset($idMap[$newId])) {
$newId = urlencode($contentId . '-' . $loopIndex);
$loopIndex++;
}
$element->setAttribute('id', $newId);
$idMap[$newId] = true;
}
/**
* Get the plain text version of a page's content.
* @param \BookStack\Entities\Page $page
* @return string
*/
protected function pageToPlainText(Page $page) : string
{
$html = $this->renderPage($page, true);
return strip_tags($html);
}
/**
* Get a new draft page instance.
* @param Book $book
* @param Chapter|null $chapter
* @return \BookStack\Entities\Page
* @throws \Throwable
*/
public function getDraftPage(Book $book, Chapter $chapter = null)
{
$page = $this->entityProvider->page->newInstance();
$page->name = trans('entities.pages_initial_name');
$page->created_by = user()->id;
$page->updated_by = user()->id;
$page->draft = true;
if ($chapter) {
$page->chapter_id = $chapter->id;
}
$book->pages()->save($page);
$page = $this->entityProvider->page->find($page->id);
$this->permissionService->buildJointPermissionsForEntity($page);
return $page;
}
/**
* Save a page update draft.
* @param Page $page
* @param array $data
* @return PageRevision|Page
*/
public function updatePageDraft(Page $page, array $data = [])
{
// If the page itself is a draft simply update that
if ($page->draft) {
$page->fill($data);
if (isset($data['html'])) {
$page->text = $this->pageToPlainText($page);
}
$page->save();
return $page;
}
// Otherwise save the data to a revision
$userId = user()->id;
$drafts = $this->userUpdatePageDraftsQuery($page, $userId)->get();
if ($drafts->count() > 0) {
$draft = $drafts->first();
} else {
$draft = $this->entityProvider->pageRevision->newInstance();
$draft->page_id = $page->id;
$draft->slug = $page->slug;
$draft->book_slug = $page->book->slug;
$draft->created_by = $userId;
$draft->type = 'update_draft';
}
$draft->fill($data);
if (setting('app-editor') !== 'markdown') {
$draft->markdown = '';
}
$draft->save();
return $draft;
}
/**
* Publish a draft page to make it a normal page.
* Sets the slug and updates the content.
* @param Page $draftPage
* @param array $input
* @return Page
* @throws \Exception
*/
public function publishPageDraft(Page $draftPage, array $input)
{
$draftPage->fill($input);
// Save page tags if present
if (isset($input['tags'])) {
$this->tagRepo->saveTagsToEntity($draftPage, $input['tags']);
}
if (isset($input['template']) && userCan('templates-manage')) {
$draftPage->template = ($input['template'] === 'true');
}
$draftPage->slug = $this->findSuitableSlug('page', $draftPage->name, false, $draftPage->book->id);
$draftPage->html = $this->formatHtml($input['html']);
$draftPage->text = $this->pageToPlainText($draftPage);
$draftPage->draft = false;
$draftPage->revision_count = 1;
$draftPage->save();
$this->savePageRevision($draftPage, trans('entities.pages_initial_revision'));
$this->searchService->indexEntity($draftPage);
return $draftPage;
}
/**
* The base query for getting user update drafts.
* @param Page $page
* @param $userId
* @return mixed
*/
protected function userUpdatePageDraftsQuery(Page $page, int $userId)
{
return $this->entityProvider->pageRevision->where('created_by', '=', $userId)
->where('type', 'update_draft')
->where('page_id', '=', $page->id)
->orderBy('created_at', 'desc');
}
/**
* Get the latest updated draft revision for a particular page and user.
* @param Page $page
* @param $userId
* @return PageRevision|null
*/
public function getUserPageDraft(Page $page, int $userId)
{
return $this->userUpdatePageDraftsQuery($page, $userId)->first();
}
/**
* Get the notification message that informs the user that they are editing a draft page.
* @param PageRevision $draft
* @return string
*/
public function getUserPageDraftMessage(PageRevision $draft)
{
$message = trans('entities.pages_editing_draft_notification', ['timeDiff' => $draft->updated_at->diffForHumans()]);
if ($draft->page->updated_at->timestamp <= $draft->updated_at->timestamp) {
return $message;
}
return $message . "\n" . trans('entities.pages_draft_edited_notification');
}
/**
* A query to check for active update drafts on a particular page.
* @param Page $page
* @param int $minRange
* @return mixed
*/
protected function activePageEditingQuery(Page $page, int $minRange = null)
{
$query = $this->entityProvider->pageRevision->where('type', '=', 'update_draft')
->where('page_id', '=', $page->id)
->where('updated_at', '>', $page->updated_at)
->where('created_by', '!=', user()->id)
->with('createdBy');
if ($minRange !== null) {
$query = $query->where('updated_at', '>=', Carbon::now()->subMinutes($minRange));
}
return $query;
}
/**
* Check if a page is being actively editing.
* Checks for edits since last page updated.
* Passing in a minuted range will check for edits
* within the last x minutes.
* @param Page $page
* @param int $minRange
* @return bool
*/
public function isPageEditingActive(Page $page, int $minRange = null)
{
$draftSearch = $this->activePageEditingQuery($page, $minRange);
return $draftSearch->count() > 0;
}
/**
* Get a notification message concerning the editing activity on a particular page.
* @param Page $page
* @param int $minRange
* @return string
*/
public function getPageEditingActiveMessage(Page $page, int $minRange = null)
{
$pageDraftEdits = $this->activePageEditingQuery($page, $minRange)->get();
$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]);
$timeMessage = $minRange === null ? trans('entities.pages_draft_edit_active.time_a') : trans('entities.pages_draft_edit_active.time_b', ['minCount'=>$minRange]);
return trans('entities.pages_draft_edit_active.message', ['start' => $userMessage, 'time' => $timeMessage]);
}
/**
* Parse the headers on the page to get a navigation menu
* @param string $pageContent
* @return array
*/
public function getPageNav(string $pageContent)
{
if ($pageContent == '') {
return [];
}
libxml_use_internal_errors(true);
$doc = new DOMDocument();
$doc->loadHTML(mb_convert_encoding($pageContent, 'HTML-ENTITIES', 'UTF-8'));
$xPath = new DOMXPath($doc);
$headers = $xPath->query("//h1|//h2|//h3|//h4|//h5|//h6");
if (is_null($headers)) {
return [];
}
$tree = collect($headers)->map(function($header) {
$text = trim(str_replace("\xc2\xa0", '', $header->nodeValue));
$text = mb_substr($text, 0, 100);
return [
'nodeName' => strtolower($header->nodeName),
'level' => intval(str_replace('h', '', $header->nodeName)),
'link' => '#' . $header->getAttribute('id'),
'text' => $text,
];
})->filter(function($header) {
return mb_strlen($header['text']) > 0;
});
// Shift headers if only smaller headers have been used
$levelChange = ($tree->pluck('level')->min() - 1);
$tree = $tree->map(function ($header) use ($levelChange) {
$header['level'] -= ($levelChange);
return $header;
});
return $tree->toArray();
}
/**
* Restores a revision's content back into a page.
* @param Page $page
* @param Book $book
* @param int $revisionId
* @return Page
* @throws \Exception
*/
public function restorePageRevision(Page $page, Book $book, int $revisionId)
{
$page->revision_count++;
$this->savePageRevision($page);
$revision = $page->revisions()->where('id', '=', $revisionId)->first();
$page->fill($revision->toArray());
$page->slug = $this->findSuitableSlug('page', $page->name, $page->id, $book->id);
$page->text = $this->pageToPlainText($page);
$page->updated_by = user()->id;
$page->save();
$this->searchService->indexEntity($page);
return $page;
}
/**
* Change the page's parent to the given entity.
* @param Page $page
* @param Entity $parent
* @throws \Throwable
*/
public function changePageParent(Page $page, Entity $parent)
{
$book = $parent->isA('book') ? $parent : $parent->book;
$page->chapter_id = $parent->isA('chapter') ? $parent->id : 0;
$page->save();
if ($page->book->id !== $book->id) {
$page = $this->changeBook('page', $book->id, $page);
}
$page->load('book');
$this->permissionService->buildJointPermissionsForEntity($book);
}
/**
* Create a copy of a page in a new location with a new name.
* @param \BookStack\Entities\Page $page
* @param \BookStack\Entities\Entity $newParent
* @param string $newName
* @return \BookStack\Entities\Page
* @throws \Throwable
*/
public function copyPage(Page $page, Entity $newParent, string $newName = '')
{
$newBook = $newParent->isA('book') ? $newParent : $newParent->book;
$newChapter = $newParent->isA('chapter') ? $newParent : null;
$copyPage = $this->getDraftPage($newBook, $newChapter);
$pageData = $page->getAttributes();
// Update name
if (!empty($newName)) {
$pageData['name'] = $newName;
}
// Copy tags from previous page if set
if ($page->tags) {
$pageData['tags'] = [];
foreach ($page->tags as $tag) {
$pageData['tags'][] = ['name' => $tag->name, 'value' => $tag->value];
}
}
// Set priority
if ($newParent->isA('chapter')) {
$pageData['priority'] = $this->getNewChapterPriority($newParent);
} else {
$pageData['priority'] = $this->getNewBookPriority($newParent);
}
return $this->publishPageDraft($copyPage, $pageData);
}
/**
* Get pages that have been marked as templates.
* @param int $count
* @param int $page
* @param string $search
* @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
*/
public function getPageTemplates(int $count = 10, int $page = 1, string $search = '')
{
$query = $this->entityQuery('page')
->where('template', '=', true)
->orderBy('name', 'asc')
->skip( ($page - 1) * $count)
->take($count);
if ($search) {
$query->where('name', 'like', '%' . $search . '%');
}
$paginator = $query->paginate($count, ['*'], 'page', $page);
$paginator->withPath('/templates');
return $paginator;
}
}