BookStack/app/Repos/EntityRepo.php
2017-02-01 22:16:32 +00:00

1212 lines
39 KiB
PHP

<?php namespace BookStack\Repos;
use BookStack\Book;
use BookStack\Chapter;
use BookStack\Entity;
use BookStack\Exceptions\NotFoundException;
use BookStack\Page;
use BookStack\PageRevision;
use BookStack\Services\AttachmentService;
use BookStack\Services\PermissionService;
use BookStack\Services\ViewService;
use Carbon\Carbon;
use DOMDocument;
use DOMXPath;
use Illuminate\Support\Collection;
class EntityRepo
{
/**
* @var Book $book
*/
public $book;
/**
* @var Chapter
*/
public $chapter;
/**
* @var Page
*/
public $page;
/**
* @var PageRevision
*/
protected $pageRevision;
/**
* Base entity instances keyed by type
* @var []Entity
*/
protected $entities;
/**
* @var PermissionService
*/
protected $permissionService;
/**
* @var ViewService
*/
protected $viewService;
/**
* @var TagRepo
*/
protected $tagRepo;
/**
* Acceptable operators to be used in a query
* @var array
*/
protected $queryOperators = ['<=', '>=', '=', '<', '>', 'like', '!='];
/**
* EntityService constructor.
* @param Book $book
* @param Chapter $chapter
* @param Page $page
* @param PageRevision $pageRevision
* @param ViewService $viewService
* @param PermissionService $permissionService
* @param TagRepo $tagRepo
*/
public function __construct(
Book $book, Chapter $chapter, Page $page, PageRevision $pageRevision,
ViewService $viewService, PermissionService $permissionService, TagRepo $tagRepo
)
{
$this->book = $book;
$this->chapter = $chapter;
$this->page = $page;
$this->pageRevision = $pageRevision;
$this->entities = [
'page' => $this->page,
'chapter' => $this->chapter,
'book' => $this->book,
'page_revision' => $this->pageRevision
];
$this->viewService = $viewService;
$this->permissionService = $permissionService;
$this->tagRepo = $tagRepo;
}
/**
* Get an entity instance via type.
* @param $type
* @return Entity
*/
protected function getEntity($type)
{
return $this->entities[strtolower($type)];
}
/**
* Base query for searching entities via permission system
* @param string $type
* @param bool $allowDrafts
* @return \Illuminate\Database\Query\Builder
*/
protected function entityQuery($type, $allowDrafts = false)
{
$q = $this->permissionService->enforceEntityRestrictions($type, $this->getEntity($type), 'view');
if (strtolower($type) === 'page' && !$allowDrafts) {
$q = $q->where('draft', '=', false);
}
return $q;
}
/**
* Check if an entity with the given id exists.
* @param $type
* @param $id
* @return bool
*/
public function exists($type, $id)
{
return $this->entityQuery($type)->where('id', '=', $id)->exists();
}
/**
* Get an entity by ID
* @param string $type
* @param integer $id
* @param bool $allowDrafts
* @return Entity
*/
public function getById($type, $id, $allowDrafts = false)
{
return $this->entityQuery($type, $allowDrafts)->find($id);
}
/**
* Get an entity by its url slug.
* @param string $type
* @param string $slug
* @param string|bool $bookSlug
* @return Entity
* @throws NotFoundException
*/
public function getBySlug($type, $slug, $bookSlug = false)
{
$q = $this->entityQuery($type)->where('slug', '=', $slug);
if (strtolower($type) === 'chapter' || strtolower($type) === 'page') {
$q = $q->where('book_id', '=', function($query) use ($bookSlug) {
$query->select('id')
->from($this->book->getTable())
->where('slug', '=', $bookSlug)->limit(1);
});
}
$entity = $q->first();
if ($entity === null) throw new NotFoundException(trans('errors.' . strtolower($type) . '_not_found'));
return $entity;
}
/**
* 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 $bookSlug
* @return null|Page
*/
public function getPageByOldSlug($pageSlug, $bookSlug)
{
$revision = $this->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;
}
/**
* Get all entities of a type limited by count unless count if false.
* @param string $type
* @param integer|bool $count
* @return Collection
*/
public function getAll($type, $count = 20)
{
$q = $this->entityQuery($type)->orderBy('name', 'asc');
if ($count !== false) $q = $q->take($count);
return $q->get();
}
/**
* Get all entities in a paginated format
* @param $type
* @param int $count
* @return \Illuminate\Contracts\Pagination\LengthAwarePaginator
*/
public function getAllPaginated($type, $count = 10)
{
return $this->entityQuery($type)->orderBy('name', 'asc')->paginate($count);
}
/**
* Get the most recently created entities of the given type.
* @param string $type
* @param int $count
* @param int $page
* @param bool|callable $additionalQuery
*/
public function getRecentlyCreated($type, $count = 20, $page = 0, $additionalQuery = false)
{
$query = $this->permissionService->enforceEntityRestrictions($type, $this->getEntity($type))
->orderBy('created_at', 'desc');
if (strtolower($type) === 'page') $query = $query->where('draft', '=', false);
if ($additionalQuery !== false && is_callable($additionalQuery)) {
$additionalQuery($query);
}
return $query->skip($page * $count)->take($count)->get();
}
/**
* Get the most recently updated entities of the given type.
* @param string $type
* @param int $count
* @param int $page
* @param bool|callable $additionalQuery
*/
public function getRecentlyUpdated($type, $count = 20, $page = 0, $additionalQuery = false)
{
$query = $this->permissionService->enforceEntityRestrictions($type, $this->getEntity($type))
->orderBy('updated_at', 'desc');
if (strtolower($type) === 'page') $query = $query->where('draft', '=', false);
if ($additionalQuery !== false && is_callable($additionalQuery)) {
$additionalQuery($query);
}
return $query->skip($page * $count)->take($count)->get();
}
/**
* Get the most recently viewed entities.
* @param string|bool $type
* @param int $count
* @param int $page
* @return mixed
*/
public function getRecentlyViewed($type, $count = 10, $page = 0)
{
$filter = is_bool($type) ? false : $this->getEntity($type);
return $this->viewService->getUserRecentlyViewed($count, $page, $filter);
}
/**
* Get the latest pages added to the system with pagination.
* @param string $type
* @param int $count
* @return mixed
*/
public function getRecentlyCreatedPaginated($type, $count = 20)
{
return $this->entityQuery($type)->orderBy('created_at', 'desc')->paginate($count);
}
/**
* Get the latest pages added to the system with pagination.
* @param string $type
* @param int $count
* @return mixed
*/
public function getRecentlyUpdatedPaginated($type, $count = 20)
{
return $this->entityQuery($type)->orderBy('updated_at', 'desc')->paginate($count);
}
/**
* Get the most popular entities base on all views.
* @param string|bool $type
* @param int $count
* @param int $page
* @return mixed
*/
public function getPopular($type, $count = 10, $page = 0)
{
$filter = is_bool($type) ? false : $this->getEntity($type);
return $this->viewService->getPopular($count, $page, $filter);
}
/**
* Get draft pages owned by the current user.
* @param int $count
* @param int $page
*/
public function getUserDraftPages($count = 20, $page = 0)
{
return $this->page->where('draft', '=', true)
->where('created_by', '=', user()->id)
->orderBy('updated_at', 'desc')
->skip($count * $page)->take($count)->get();
}
/**
* Get all child objects of a book.
* Returns a sorted collection of Pages and Chapters.
* Loads the book slug onto child elements to prevent access database access for getting the slug.
* @param Book $book
* @param bool $filterDrafts
* @return mixed
*/
public function getBookChildren(Book $book, $filterDrafts = false)
{
$q = $this->permissionService->bookChildrenQuery($book->id, $filterDrafts)->get();
$entities = [];
$parents = [];
$tree = [];
foreach ($q as $index => $rawEntity) {
if ($rawEntity->entity_type === 'BookStack\\Page') {
$entities[$index] = $this->page->newFromBuilder($rawEntity);
} else if ($rawEntity->entity_type === 'BookStack\\Chapter') {
$entities[$index] = $this->chapter->newFromBuilder($rawEntity);
$key = $entities[$index]->entity_type . ':' . $entities[$index]->id;
$parents[$key] = $entities[$index];
$parents[$key]->setAttribute('pages', collect());
}
if ($entities[$index]->chapter_id === 0 || $entities[$index]->chapter_id === '0') $tree[] = $entities[$index];
$entities[$index]->book = $book;
}
foreach ($entities as $entity) {
if ($entity->chapter_id === 0 || $entity->chapter_id === '0') continue;
$parentKey = 'BookStack\\Chapter:' . $entity->chapter_id;
$chapter = $parents[$parentKey];
$chapter->pages->push($entity);
}
return collect($tree);
}
/**
* Get the child items for a chapter sorted by priority but
* with draft items floated to the top.
* @param Chapter $chapter
*/
public function getChapterChildren(Chapter $chapter)
{
return $this->permissionService->enforceEntityRestrictions('page', $chapter->pages())
->orderBy('draft', 'DESC')->orderBy('priority', 'ASC')->get();
}
/**
* Search entities of a type via a given query.
* @param string $type
* @param string $term
* @param array $whereTerms
* @param int $count
* @param array $paginationAppends
* @return mixed
*/
public function getBySearch($type, $term, $whereTerms = [], $count = 20, $paginationAppends = [])
{
$terms = $this->prepareSearchTerms($term);
$q = $this->permissionService->enforceEntityRestrictions($type, $this->getEntity($type)->fullTextSearchQuery($terms, $whereTerms));
$q = $this->addAdvancedSearchQueries($q, $term);
$entities = $q->paginate($count)->appends($paginationAppends);
$words = join('|', explode(' ', preg_quote(trim($term), '/')));
// Highlight page content
if ($type === 'page') {
//lookahead/behind assertions ensures cut between words
$s = '\s\x00-/:-@\[-`{-~'; //character set for start/end of words
foreach ($entities as $page) {
preg_match_all('#(?<=[' . $s . ']).{1,30}((' . $words . ').{1,30})+(?=[' . $s . '])#uis', $page->text, $matches, PREG_SET_ORDER);
//delimiter between occurrences
$results = [];
foreach ($matches as $line) {
$results[] = htmlspecialchars($line[0], 0, 'UTF-8');
}
$matchLimit = 6;
if (count($results) > $matchLimit) $results = array_slice($results, 0, $matchLimit);
$result = join('... ', $results);
//highlight
$result = preg_replace('#' . $words . '#iu', "<span class=\"highlight\">\$0</span>", $result);
if (strlen($result) < 5) $result = $page->getExcerpt(80);
$page->searchSnippet = $result;
}
return $entities;
}
// Highlight chapter/book content
foreach ($entities as $entity) {
//highlight
$result = preg_replace('#' . $words . '#iu', "<span class=\"highlight\">\$0</span>", $entity->getExcerpt(100));
$entity->searchSnippet = $result;
}
return $entities;
}
/**
* Get the next sequential priority for a new child element in the given book.
* @param Book $book
* @return int
*/
public function getNewBookPriority(Book $book)
{
$lastElem = $this->getBookChildren($book)->pop();
return $lastElem ? $lastElem->priority + 1 : 0;
}
/**
* Get a new priority for a new page to be added to the given chapter.
* @param Chapter $chapter
* @return int
*/
public function getNewChapterPriority(Chapter $chapter)
{
$lastPage = $chapter->pages('DESC')->first();
return $lastPage !== null ? $lastPage->priority + 1 : 0;
}
/**
* Find a suitable slug for an entity.
* @param string $type
* @param string $name
* @param bool|integer $currentId
* @param bool|integer $bookId Only pass if type is not a book
* @return string
*/
public function findSuitableSlug($type, $name, $currentId = false, $bookId = false)
{
$slug = $this->nameToSlug($name);
while ($this->slugExists($type, $slug, $currentId, $bookId)) {
$slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
}
return $slug;
}
/**
* Check if a slug already exists in the database.
* @param string $type
* @param string $slug
* @param bool|integer $currentId
* @param bool|integer $bookId
* @return bool
*/
protected function slugExists($type, $slug, $currentId = false, $bookId = false)
{
$query = $this->getEntity($type)->where('slug', '=', $slug);
if (strtolower($type) === 'page' || strtolower($type) === 'chapter') {
$query = $query->where('book_id', '=', $bookId);
}
if ($currentId) $query = $query->where('id', '!=', $currentId);
return $query->count() > 0;
}
/**
* Updates entity restrictions from a request
* @param $request
* @param Entity $entity
*/
public function updateEntityPermissionsFromRequest($request, Entity $entity)
{
$entity->restricted = $request->has('restricted') && $request->get('restricted') === 'true';
$entity->permissions()->delete();
if ($request->has('restrictions')) {
foreach ($request->get('restrictions') as $roleId => $restrictions) {
foreach ($restrictions as $action => $value) {
$entity->permissions()->create([
'role_id' => $roleId,
'action' => strtolower($action)
]);
}
}
}
$entity->save();
$this->permissionService->buildJointPermissionsForEntity($entity);
}
/**
* Prepare a string of search terms by turning
* it into an array of terms.
* Keeps quoted terms together.
* @param $termString
* @return array
*/
public function prepareSearchTerms($termString)
{
$termString = $this->cleanSearchTermString($termString);
preg_match_all('/(".*?")/', $termString, $matches);
$terms = [];
if (count($matches[1]) > 0) {
foreach ($matches[1] as $match) {
$terms[] = $match;
}
$termString = trim(preg_replace('/"(.*?)"/', '', $termString));
}
if (!empty($termString)) $terms = array_merge($terms, explode(' ', $termString));
return $terms;
}
/**
* Removes any special search notation that should not
* be used in a full-text search.
* @param $termString
* @return mixed
*/
protected function cleanSearchTermString($termString)
{
// Strip tag searches
$termString = preg_replace('/\[.*?\]/', '', $termString);
// Reduced multiple spacing into single spacing
$termString = preg_replace("/\s{2,}/", " ", $termString);
return $termString;
}
/**
* Get the available query operators as a regex escaped list.
* @return mixed
*/
protected function getRegexEscapedOperators()
{
$escapedOperators = [];
foreach ($this->queryOperators as $operator) {
$escapedOperators[] = preg_quote($operator);
}
return join('|', $escapedOperators);
}
/**
* Parses advanced search notations and adds them to the db query.
* @param $query
* @param $termString
* @return mixed
*/
protected function addAdvancedSearchQueries($query, $termString)
{
$escapedOperators = $this->getRegexEscapedOperators();
// Look for tag searches
preg_match_all("/\[(.*?)((${escapedOperators})(.*?))?\]/", $termString, $tags);
if (count($tags[0]) > 0) {
$this->applyTagSearches($query, $tags);
}
return $query;
}
/**
* Apply extracted tag search terms onto a entity query.
* @param $query
* @param $tags
* @return mixed
*/
protected function applyTagSearches($query, $tags) {
$query->where(function($query) use ($tags) {
foreach ($tags[1] as $index => $tagName) {
$query->whereHas('tags', function($query) use ($tags, $index, $tagName) {
$tagOperator = $tags[3][$index];
$tagValue = $tags[4][$index];
if (!empty($tagOperator) && !empty($tagValue) && in_array($tagOperator, $this->queryOperators)) {
if (is_numeric($tagValue) && $tagOperator !== 'like') {
// We have to do a raw sql query for this since otherwise PDO will quote the value and MySQL will
// search the value as a string which prevents being able to do number-based operations
// on the tag values. We ensure it has a numeric value and then cast it just to be sure.
$tagValue = (float) trim($query->getConnection()->getPdo()->quote($tagValue), "'");
$query->where('name', '=', $tagName)->whereRaw("value ${tagOperator} ${tagValue}");
} else {
$query->where('name', '=', $tagName)->where('value', $tagOperator, $tagValue);
}
} else {
$query->where('name', '=', $tagName);
}
});
}
});
return $query;
}
/**
* Create a new entity from request input.
* Used for books and chapters.
* @param string $type
* @param array $input
* @param bool|Book $book
* @return Entity
*/
public function createFromInput($type, $input = [], $book = false)
{
$isChapter = strtolower($type) === 'chapter';
$entity = $this->getEntity($type)->newInstance($input);
$entity->slug = $this->findSuitableSlug($type, $entity->name, false, $isChapter ? $book->id : false);
$entity->created_by = user()->id;
$entity->updated_by = user()->id;
$isChapter ? $book->chapters()->save($entity) : $entity->save();
$this->permissionService->buildJointPermissionsForEntity($entity);
return $entity;
}
/**
* Update entity details from request input.
* Use for books and chapters
* @param string $type
* @param Entity $entityModel
* @param array $input
* @return Entity
*/
public function updateFromInput($type, Entity $entityModel, $input = [])
{
if ($entityModel->name !== $input['name']) {
$entityModel->slug = $this->findSuitableSlug($type, $input['name'], $entityModel->id);
}
$entityModel->fill($input);
$entityModel->updated_by = user()->id;
$entityModel->save();
$this->permissionService->buildJointPermissionsForEntity($entityModel);
return $entityModel;
}
/**
* Change the book that an entity belongs to.
* @param string $type
* @param integer $newBookId
* @param Entity $entity
* @param bool $rebuildPermissions
* @return Entity
*/
public function changeBook($type, $newBookId, Entity $entity, $rebuildPermissions = false)
{
$entity->book_id = $newBookId;
// Update related activity
foreach ($entity->activity as $activity) {
$activity->book_id = $newBookId;
$activity->save();
}
$entity->slug = $this->findSuitableSlug($type, $entity->name, $entity->id, $newBookId);
$entity->save();
// Update all child pages if a chapter
if (strtolower($type) === 'chapter') {
foreach ($entity->pages as $page) {
$this->changeBook('page', $newBookId, $page, false);
}
}
// Update permissions if applicable
if ($rebuildPermissions) {
$entity->load('book');
$this->permissionService->buildJointPermissionsForEntity($entity->book);
}
return $entity;
}
/**
* Alias method to update the book jointPermissions in the PermissionService.
* @param Collection $collection collection on entities
*/
public function buildJointPermissions(Collection $collection)
{
$this->permissionService->buildJointPermissionsForEntities($collection);
}
/**
* Format a name as a url slug.
* @param $name
* @return string
*/
protected function nameToSlug($name)
{
$slug = str_replace(' ', '-', strtolower($name));
$slug = preg_replace('/[\+\/\\\?\@\}\{\.\,\=\[\]\#\&\!\*\'\;\:\$\%]/', '', $slug);
if ($slug === "") $slug = substr(md5(rand(1, 500)), 0, 5);
return $slug;
}
/**
* 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
*/
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']);
}
$draftPage->slug = $this->findSuitableSlug('page', $draftPage->name, false, $draftPage->book->id);
$draftPage->html = $this->formatHtml($input['html']);
$draftPage->text = strip_tags($draftPage->html);
$draftPage->draft = false;
$draftPage->save();
$this->savePageRevision($draftPage, trans('entities.pages_initial_revision'));
return $draftPage;
}
/**
* Saves a page revision into the system.
* @param Page $page
* @param null|string $summary
* @return PageRevision
*/
public function savePageRevision(Page $page, $summary = null)
{
$revision = $this->pageRevision->newInstance($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;
$revision->save();
// Clear old revisions
if ($this->pageRevision->where('page_id', '=', $page->id)->count() > 50) {
$this->pageRevision->where('page_id', '=', $page->id)
->orderBy('created_at', 'desc')->skip(50)->take(5)->delete();
}
return $revision;
}
/**
* Formats a page's html to be tagged correctly
* within the system.
* @param string $htmlText
* @return string
*/
protected function formatHtml($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;
// Ensure no duplicate ids are used
$idArray = [];
foreach ($childNodes as $index => $childNode) {
/** @var \DOMElement $childNode */
if (get_class($childNode) !== 'DOMElement') continue;
// Overwrite id if not a BookStack custom id
if ($childNode->hasAttribute('id')) {
$id = $childNode->getAttribute('id');
if (strpos($id, 'bkmrk') === 0 && array_search($id, $idArray) === false) {
$idArray[] = $id;
continue;
};
}
// 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.
$contentId = 'bkmrk-' . substr(strtolower(preg_replace('/\s+/', '-', trim($childNode->nodeValue))), 0, 20);
$newId = urlencode($contentId);
$loopIndex = 0;
while (in_array($newId, $idArray)) {
$newId = urlencode($contentId . '-' . $loopIndex);
$loopIndex++;
}
$childNode->setAttribute('id', $newId);
$idArray[] = $newId;
}
// Generate inner html as a string
$html = '';
foreach ($childNodes as $childNode) {
$html .= $doc->saveHTML($childNode);
}
return $html;
}
/**
* Render the page for viewing, Parsing and performing features such as page transclusion.
* @param Page $page
* @return mixed|string
*/
public function renderPage(Page $page)
{
$content = $page->html;
$matches = [];
preg_match_all("/{{@\s?([0-9].*?)}}/", $content, $matches);
if (count($matches[0]) === 0) return $content;
foreach ($matches[1] as $index => $includeId) {
$splitInclude = explode('#', $includeId, 2);
$pageId = intval($splitInclude[0]);
if (is_nan($pageId)) continue;
$page = $this->getById('page', $pageId);
if ($page === null) {
$content = str_replace($matches[0][$index], '', $content);
continue;
}
if (count($splitInclude) === 1) {
$content = str_replace($matches[0][$index], $page->html, $content);
continue;
}
$doc = new DOMDocument();
$doc->loadHTML(mb_convert_encoding('<body>'.$page->html.'</body>', 'HTML-ENTITIES', 'UTF-8'));
$matchingElem = $doc->getElementById($splitInclude[1]);
if ($matchingElem === null) {
$content = str_replace($matches[0][$index], '', $content);
continue;
}
$innerContent = '';
foreach ($matchingElem->childNodes as $childNode) {
$innerContent .= $doc->saveHTML($childNode);
}
$content = str_replace($matches[0][$index], trim($innerContent), $content);
}
return $content;
}
/**
* Get a new draft page instance.
* @param Book $book
* @param Chapter|bool $chapter
* @return Page
*/
public function getDraftPage(Book $book, $chapter = false)
{
$page = $this->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);
$this->permissionService->buildJointPermissionsForEntity($page);
return $page;
}
/**
* Search for image usage within page content.
* @param $imageString
* @return mixed
*/
public function searchForImage($imageString)
{
$pages = $this->entityQuery('page')->where('html', 'like', '%' . $imageString . '%')->get();
foreach ($pages as $page) {
$page->url = $page->getUrl();
$page->html = '';
$page->text = '';
}
return count($pages) > 0 ? $pages : false;
}
/**
* Parse the headers on the page to get a navigation menu
* @param String $pageContent
* @return array
*/
public function getPageNav($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 [];
$tree = collect([]);
foreach ($headers as $header) {
$text = $header->nodeValue;
$tree->push([
'nodeName' => strtolower($header->nodeName),
'level' => intval(str_replace('h', '', $header->nodeName)),
'link' => '#' . $header->getAttribute('id'),
'text' => strlen($text) > 30 ? substr($text, 0, 27) . '...' : $text
]);
}
// Normalise headers if only smaller headers have been used
if (count($tree) > 0) {
$minLevel = $tree->pluck('level')->min();
$tree = $tree->map(function($header) use ($minLevel) {
$header['level'] -= ($minLevel - 2);
return $header;
});
}
return $tree->toArray();
}
/**
* 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
*/
public function updatePage(Page $page, $book_id, $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']);
}
// Update with new details
$userId = user()->id;
$page->fill($input);
$page->html = $this->formatHtml($input['html']);
$page->text = strip_tags($page->html);
if (setting('app-editor') !== 'markdown') $page->markdown = '';
$page->updated_by = $userId;
$page->save();
// Remove all update drafts for this user & page.
$this->userUpdatePageDraftsQuery($page, $userId)->delete();
// Save a revision after updating
if ($oldHtml !== $input['html'] || $oldName !== $input['name'] || $input['summary'] !== null) {
$this->savePageRevision($page, $input['summary']);
}
return $page;
}
/**
* The base query for getting user update drafts.
* @param Page $page
* @param $userId
* @return mixed
*/
protected function userUpdatePageDraftsQuery(Page $page, $userId)
{
return $this->pageRevision->where('created_by', '=', $userId)
->where('type', 'update_draft')
->where('page_id', '=', $page->id)
->orderBy('created_at', 'desc');
}
/**
* Checks whether a user has a draft version of a particular page or not.
* @param Page $page
* @param $userId
* @return bool
*/
public function hasUserGotPageDraft(Page $page, $userId)
{
return $this->userUpdatePageDraftsQuery($page, $userId)->count() > 0;
}
/**
* Get the latest updated draft revision for a particular page and user.
* @param Page $page
* @param $userId
* @return mixed
*/
public function getUserPageDraft(Page $page, $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');
}
/**
* 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 null $minRange
* @return bool
*/
public function isPageEditingActive(Page $page, $minRange = null)
{
$draftSearch = $this->activePageEditingQuery($page, $minRange);
return $draftSearch->count() > 0;
}
/**
* A query to check for active update drafts on a particular page.
* @param Page $page
* @param null $minRange
* @return mixed
*/
protected function activePageEditingQuery(Page $page, $minRange = null)
{
$query = $this->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;
}
/**
* Restores a revision's content back into a page.
* @param Page $page
* @param Book $book
* @param int $revisionId
* @return Page
*/
public function restorePageRevision(Page $page, Book $book, $revisionId)
{
$this->savePageRevision($page);
$revision = $this->getById('page_revision', $revisionId);
$page->fill($revision->toArray());
$page->slug = $this->findSuitableSlug('page', $page->name, $page->id, $book->id);
$page->text = strip_tags($page->html);
$page->updated_by = user()->id;
$page->save();
return $page;
}
/**
* Save a page update draft.
* @param Page $page
* @param array $data
* @return PageRevision|Page
*/
public function updatePageDraft(Page $page, $data = [])
{
// If the page itself is a draft simply update that
if ($page->draft) {
$page->fill($data);
if (isset($data['html'])) {
$page->text = strip_tags($data['html']);
}
$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->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;
}
/**
* Get a notification message concerning the editing activity on a particular page.
* @param Page $page
* @param null $minRange
* @return string
*/
public function getPageEditingActiveMessage(Page $page, $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]);
}
/**
* Change the page's parent to the given entity.
* @param Page $page
* @param Entity $parent
*/
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);
}
/**
* Destroy the provided book and all its child entities.
* @param Book $book
*/
public function destroyBook(Book $book)
{
foreach ($book->pages as $page) {
$this->destroyPage($page);
}
foreach ($book->chapters as $chapter) {
$this->destroyChapter($chapter);
}
\Activity::removeEntity($book);
$book->views()->delete();
$book->permissions()->delete();
$this->permissionService->deleteJointPermissionsForEntity($book);
$book->delete();
}
/**
* Destroy a chapter and its relations.
* @param Chapter $chapter
*/
public function destroyChapter(Chapter $chapter)
{
if (count($chapter->pages) > 0) {
foreach ($chapter->pages as $page) {
$page->chapter_id = 0;
$page->save();
}
}
\Activity::removeEntity($chapter);
$chapter->views()->delete();
$chapter->permissions()->delete();
$this->permissionService->deleteJointPermissionsForEntity($chapter);
$chapter->delete();
}
/**
* Destroy a given page along with its dependencies.
* @param Page $page
*/
public function destroyPage(Page $page)
{
\Activity::removeEntity($page);
$page->views()->delete();
$page->tags()->delete();
$page->revisions()->delete();
$page->permissions()->delete();
$this->permissionService->deleteJointPermissionsForEntity($page);
// Delete Attached Files
$attachmentService = app(AttachmentService::class);
foreach ($page->attachments as $attachment) {
$attachmentService->deleteFile($attachment);
}
$page->delete();
}
}