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<?php
namespace BookStack\Http\Controllers;
use BookStack\Entities\Repos\PageRepo;
use BookStack\Entities\Tools\PageContent;
use BookStack\Exceptions\NotFoundException;
use Ssddanbrown\HtmlDiff\Diff;
class PageRevisionController extends Controller
{
protected $pageRepo;
/**
* PageRevisionController constructor.
*/
public function __construct(PageRepo $pageRepo)
{
$this->pageRepo = $pageRepo;
}
/**
* Shows the last revisions for this page.
*
* @throws NotFoundException
*/
public function index(string $bookSlug, string $pageSlug)
{
$page = $this->pageRepo->getBySlug($bookSlug, $pageSlug);
$this->setPageTitle(trans('entities.pages_revisions_named', ['pageName'=>$page->getShortName()]));
return view('pages.revisions', [
'page' => $page,
'current' => $page,
]);
}
/**
* Shows a preview of a single revision.
*
* @throws NotFoundException
*/
public function show(string $bookSlug, string $pageSlug, int $revisionId)
{
$page = $this->pageRepo->getBySlug($bookSlug, $pageSlug);
$revision = $page->revisions()->where('id', '=', $revisionId)->first();
if ($revision === null) {
throw new NotFoundException();
}
$page->fill($revision->toArray());
// TODO - Refactor PageContent so we don't need to juggle this
$page->html = $revision->html;
$page->html = (new PageContent($page))->render();
$this->setPageTitle(trans('entities.pages_revision_named', ['pageName' => $page->getShortName()]));
return view('pages.revision', [
'page' => $page,
'book' => $page->book,
'diff' => null,
'revision' => $revision,
]);
}
/**
* Shows the changes of a single revision.
*
* @throws NotFoundException
*/
public function changes(string $bookSlug, string $pageSlug, int $revisionId)
{
$page = $this->pageRepo->getBySlug($bookSlug, $pageSlug);
$revision = $page->revisions()->where('id', '=', $revisionId)->first();
if ($revision === null) {
throw new NotFoundException();
}
$prev = $revision->getPrevious();
$prevContent = $prev->html ?? '';
$diff = Diff::excecute($prevContent, $revision->html);
$page->fill($revision->toArray());
// TODO - Refactor PageContent so we don't need to juggle this
$page->html = $revision->html;
$page->html = (new PageContent($page))->render();
$this->setPageTitle(trans('entities.pages_revision_named', ['pageName'=>$page->getShortName()]));
return view('pages.revision', [
'page' => $page,
'book' => $page->book,
'diff' => $diff,
'revision' => $revision,
]);
}
/**
* Restores a page using the content of the specified revision.
*
* @throws NotFoundException
*/
public function restore(string $bookSlug, string $pageSlug, int $revisionId)
{
$page = $this->pageRepo->getBySlug($bookSlug, $pageSlug);
$this->checkOwnablePermission('page-update', $page);
$page = $this->pageRepo->restoreRevision($page, $revisionId);
return redirect($page->getUrl());
}
/**
* Deletes a revision using the id of the specified revision.
*
* @throws NotFoundException
*/
public function destroy(string $bookSlug, string $pageSlug, int $revId)
{
$page = $this->pageRepo->getBySlug($bookSlug, $pageSlug);
$this->checkOwnablePermission('page-delete', $page);
$revision = $page->revisions()->where('id', '=', $revId)->first();
if ($revision === null) {
throw new NotFoundException("Revision #{$revId} not found");
}
// Get the current revision for the page
$currentRevision = $page->getCurrentRevision();
// Check if its the latest revision, cannot delete latest revision.
if (intval($currentRevision->id) === intval($revId)) {
$this->showErrorNotification(trans('entities.revision_cannot_delete_latest'));
return redirect($page->getUrl('/revisions'));
}
$revision->delete();
$this->showSuccessNotification(trans('entities.revision_delete_success'));
return redirect($page->getUrl('/revisions'));
}
}