memories/lib/Controller/PublicAlbumController.php

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<?php
namespace OCA\Memories\Controller;
use OCA\Memories\Db\AlbumsQuery;
use OCP\App\IAppManager;
use OCP\AppFramework\Controller;
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use OCP\AppFramework\Http\RedirectResponse;
use OCP\AppFramework\Http\Template\LinkMenuAction;
use OCP\AppFramework\Http\Template\PublicTemplateResponse;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\AppFramework\Services\IInitialState;
use OCP\EventDispatcher\IEventDispatcher;
use OCP\Files\IRootFolder;
use OCP\IConfig;
use OCP\IL10N;
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use OCP\IURLGenerator;
use OCP\IUserSession;
use OCP\Util;
class PublicAlbumController extends Controller
{
protected $appName;
protected IEventDispatcher $eventDispatcher;
protected IInitialState $initialState;
protected IAppManager $appManager;
protected IConfig $config;
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protected IUserSession $userSession;
protected IRootFolder $rootFolder;
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protected IURLGenerator $urlGenerator;
protected AlbumsQuery $albumsQuery;
protected IL10N $l10n;
public function __construct(
string $appName,
IEventDispatcher $eventDispatcher,
IInitialState $initialState,
IAppManager $appManager,
IConfig $config,
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IUserSession $userSession,
IRootFolder $rootFolder,
IURLGenerator $urlGenerator,
AlbumsQuery $albumsQuery,
IL10N $l10n
) {
$this->appName = $appName;
$this->eventDispatcher = $eventDispatcher;
$this->initialState = $initialState;
$this->appManager = $appManager;
$this->config = $config;
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$this->userSession = $userSession;
$this->rootFolder = $rootFolder;
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$this->urlGenerator = $urlGenerator;
$this->albumsQuery = $albumsQuery;
$this->l10n = $l10n;
}
/**
* @PublicPage
*
* @NoCSRFRequired
*/
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public function showShare(string $token)
{
// Validate token exists
$album = $this->albumsQuery->getAlbumByLink($token);
if (!$album) {
return new TemplateResponse('core', '404', [], 'guest');
}
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// Check if the current user has access to the album
// Just redirect to the user's page if the user is the owner or a collaborator
if ($user = $this->userSession->getUser()) {
$uid = $user->getUID();
$albumId = (int) $album['album_id'];
if ($uid === $album['user'] || $this->albumsQuery->userIsCollaborator($uid, $albumId)) {
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$idStr = $album['user'].'/'.$album['name'];
$url = $this->urlGenerator->linkToRoute('memories.Page.albums', [
'id' => $idStr, // id of album
'noinit' => 1, // prevent showing first-start page
]);
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return new RedirectResponse($url);
}
}
// Browse anonymously if the album is accessed as a link
\OC_User::setIncognitoMode(true);
// Add OG metadata
$this->addOgMetadata($album, $token);
// Scripts
Util::addScript($this->appName, 'memories-main');
// Share info
$this->initialState->provideInitialState('share_title', $album['name']);
// Render main template
$response = new PublicTemplateResponse($this->appName, 'main', PageController::getMainParams());
$response->setHeaderTitle($album['name']);
$response->setFooterVisible(false); // wth is that anyway?
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$response->setContentSecurityPolicy(PageController::getCSP());
// Add download link
$dlUrl = $this->urlGenerator->linkToRoute('memories.PublicAlbum.download', [
'token' => $token, // share identification
'albums' => 1, // identify backend for share
]);
$dlAction = new LinkMenuAction($this->l10n->t('Download'), 'icon-download', $dlUrl);
$response->setHeaderActions([$dlAction]);
return $response;
}
/**
* @PublicPage
*
* @NoCSRFRequired
*/
public function download(string $token)
{
$album = $this->albumsQuery->getAlbumByLink($token);
if (!$album) {
return new TemplateResponse('core', '404', [], 'guest');
}
// Get list of files
$albumId = (int) $album['album_id'];
$files = $this->albumsQuery->getAlbumPhotos($albumId, null) ?? [];
$fileIds = array_map(fn ($file) => (int) $file['file_id'], $files);
// Get download handle
$downloadController = \OC::$server->get(\OCA\Memories\Controller\DownloadController::class);
$handle = $downloadController::createHandle($album['name'], $fileIds);
// Start download
return $downloadController->file($handle);
}
private function addOgMetadata(array $album, string $token)
{
$fileId = (int) $album['last_added_photo'];
$albumId = (int) $album['album_id'];
$owner = $this->albumsQuery->hasFile($albumId, $fileId);
if (!$owner) {
return;
}
$nodes = $this->rootFolder->getUserFolder($owner)->getById($fileId);
if (0 === \count($nodes)) {
return;
}
$node = $nodes[0];
$params = ['token' => $token];
$url = $this->urlGenerator->linkToRouteAbsolute('memories.PublicAlbum.showShare', $params);
\OCA\Memories\Util::addOGMetadata($node, $album['name'], $url, array_merge($params, ['album' => true]));
}
}