BookStack/app/Repos/PageRepo.php
2015-10-11 17:45:32 +01:00

304 lines
8.5 KiB
PHP

<?php namespace BookStack\Repos;
use BookStack\Book;
use BookStack\Chapter;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;
use BookStack\Page;
use BookStack\PageRevision;
class PageRepo
{
protected $page;
protected $pageRevision;
/**
* PageRepo constructor.
* @param Page $page
* @param PageRevision $pageRevision
*/
public function __construct(Page $page, PageRevision $pageRevision)
{
$this->page = $page;
$this->pageRevision = $pageRevision;
}
public function idExists($id)
{
return $this->page->where('page_id', '=', $id)->count() > 0;
}
public function getById($id)
{
return $this->page->findOrFail($id);
}
public function getAll()
{
return $this->page->all();
}
public function getBySlug($slug, $bookId)
{
return $this->page->where('slug', '=', $slug)->where('book_id', '=', $bookId)->first();
}
/**
* @param $input
* @return Page
*/
public function newFromInput($input)
{
$page = $this->page->fill($input);
return $page;
}
public function countBySlug($slug, $bookId)
{
return $this->page->where('slug', '=', $slug)->where('book_id', '=', $bookId)->count();
}
/**
* Save a new page into the system.
* Input validation must be done beforehand.
* @param array $input
* @param Book $book
* @param int $chapterId
* @return Page
*/
public function saveNew(array $input, Book $book, $chapterId = null)
{
$page = $this->newFromInput($input);
$page->slug = $this->findSuitableSlug($page->name, $book->id);
if ($chapterId) $page->chapter_id = $chapterId;
$page->html = $this->formatHtml($input['html']);
$page->text = strip_tags($page->html);
$page->created_by = auth()->user()->id;
$page->updated_by = auth()->user()->id;
$book->pages()->save($page);
$this->saveRevision($page);
return $page;
}
/**
* Formats a page's html to be tagged correctly
* within the system.
* @param string $htmlText
* @return string
*/
protected function formatHtml($htmlText)
{
libxml_use_internal_errors(true);
$doc = new \DOMDocument();
$doc->loadHTML($htmlText);
$container = $doc->documentElement;
$body = $container->childNodes->item(0);
$childNodes = $body->childNodes;
// Ensure no duplicate ids are used
$lastId = false;
$idArray = [];
foreach ($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
do {
$id = 'bkmrk-' . substr(uniqid(), -5);
} while ($id == $lastId);
$lastId = $id;
$childNode->setAttribute('id', $id);
$idArray[] = $id;
}
// Generate inner html as a string
$html = '';
foreach ($childNodes as $childNode) {
$html .= $doc->saveHTML($childNode);
}
return $html;
}
public function destroyById($id)
{
$page = $this->getById($id);
$page->delete();
}
public function getBySearch($term, $whereTerms = [])
{
$terms = explode(' ', preg_quote(trim($term)));
$pages = $this->page->fullTextSearch(['name', 'text'], $terms, $whereTerms);
// Add highlights to page text.
$words = join('|', $terms);
//lookahead/behind assertions ensures cut between words
$s = '\s\x00-/:-@\[-`{-~'; //character set for start/end of words
foreach ($pages 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 $pages;
}
/**
* Search for image usage.
* @param $imageString
* @return mixed
*/
public function searchForImage($imageString)
{
$pages = $this->page->where('html', 'like', '%' . $imageString . '%')->get();
foreach ($pages as $page) {
$page->url = $page->getUrl();
$page->html = '';
$page->text = '';
}
return count($pages) > 0 ? $pages : false;
}
/**
* Updates a page with any fillable data and saves it into the database.
* @param Page $page
* @param int $book_id
* @param string $input
* @return Page
*/
public function updatePage(Page $page, $book_id, $input)
{
$page->fill($input);
$page->slug = $this->findSuitableSlug($page->name, $book_id, $page->id);
$page->html = $this->formatHtml($input['html']);
$page->text = strip_tags($page->html);
$page->updated_by = Auth::user()->id;
$page->save();
$this->saveRevision($page);
return $page;
}
/**
* Saves a page revision into the system.
* @param Page $page
* @return $this
*/
public function saveRevision(Page $page)
{
$lastRevision = $this->getLastRevision($page);
if ($lastRevision && ($lastRevision->html === $page->html && $lastRevision->name === $page->name)) {
return $page;
}
$revision = $this->pageRevision->fill($page->toArray());
$revision->page_id = $page->id;
$revision->created_by = Auth::user()->id;
$revision->save();
// Clear old revisions
if ($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;
}
/**
* Gets the most recent revision for a page.
* @param Page $page
* @return mixed
*/
public function getLastRevision(Page $page)
{
return $this->pageRevision->where('page_id', '=', $page->id)
->orderBy('created_at', 'desc')->first();
}
/**
* Gets a single revision via it's id.
* @param $id
* @return mixed
*/
public function getRevisionById($id)
{
return $this->pageRevision->findOrFail($id);
}
/**
* Checks if a slug exists within a book already.
* @param $slug
* @param $bookId
* @param bool|false $currentId
* @return bool
*/
public function doesSlugExist($slug, $bookId, $currentId = false)
{
$query = $this->page->where('slug', '=', $slug)->where('book_id', '=', $bookId);
if ($currentId) {
$query = $query->where('id', '!=', $currentId);
}
return $query->count() > 0;
}
public function setBookId($bookId, Page $page)
{
$page->book_id = $bookId;
foreach ($page->activity as $activity) {
$activity->book_id = $bookId;
$activity->save();
}
$page->save();
return $page;
}
/**
* Gets a suitable slug for the resource
*
* @param $name
* @param $bookId
* @param bool|false $currentId
* @return string
*/
public function findSuitableSlug($name, $bookId, $currentId = false)
{
$slug = Str::slug($name);
while ($this->doesSlugExist($slug, $bookId, $currentId)) {
$slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
}
return $slug;
}
}