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<?php
/**
* @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
*
* @author Julius Haertl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Theming;
use OCP\Files\SimpleFS\ISimpleFile;
use OCP\Files\SimpleFS\ISimpleFolder;
use OCP\IConfig;
use OCP\Files\IAppData;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\IURLGenerator;
/**
* @property IURLGenerator urlGenerator
*/
class ImageManager {
/** @var IConfig */
private $config;
/** @var IAppData */
private $appData;
/** @var array */
private $supportedImageKeys = ['background', 'logo', 'logoheader', 'favicon'];
/**
* ImageManager constructor.
*
* @param IConfig $config
* @param IAppData $appData
* @param IURLGenerator $urlGenerator
*/
public function __construct(IConfig $config,
IAppData $appData,
IURLGenerator $urlGenerator
) {
$this->config = $config;
$this->appData = $appData;
$this->urlGenerator = $urlGenerator;
}
public function getImageUrl(string $key): string {
$cacheBusterCounter = $this->config->getAppValue('theming', 'cachebuster', '0');
try {
$this->getImage($key);
return $this->urlGenerator->linkToRoute('theming.Theming.getImage', [ 'key' => $key ]) . '?v=' . $cacheBusterCounter;
} catch (NotFoundException $e) {
}
switch ($key) {
case 'logo':
case 'logoheader':
case 'favicon':
return $this->urlGenerator->imagePath('core', 'logo.png') . '?v=' . $cacheBusterCounter;
case 'background':
return $this->urlGenerator->imagePath('core', 'background.png') . '?v=' . $cacheBusterCounter;
}
}
public function getImageUrlAbsolute(string $key): string {
return $this->urlGenerator->getAbsoluteURL($this->getImageUrl($key));
}
/**
* @param $key
* @return ISimpleFile
* @throws NotFoundException
*/
public function getImage(string $key): ISimpleFile {
$logo = $this->config->getAppValue('theming', $key . 'Mime', false);
if ($logo === false) {
throw new NotFoundException();
}
$folder = $this->appData->getFolder('images');
return $folder->getFile($key);
}
public function getCustomImages(): array {
$images = [];
foreach ($this->supportedImageKeys as $key) {
$images[$key] = [
'mime' => $this->config->getAppValue('theming', $key . 'Mime', ''),
'url' => $this->getImageUrl($key),
];
}
return $images;
}
/**
* Get folder for current theming files
*
* @return ISimpleFolder
* @throws NotPermittedException
*/
public function getCacheFolder(): ISimpleFolder {
$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
try {
$folder = $this->appData->getFolder($cacheBusterValue);
} catch (NotFoundException $e) {
$folder = $this->appData->newFolder($cacheBusterValue);
$this->cleanup();
}
return $folder;
}
/**
* Get a file from AppData
*
* @param string $filename
* @throws NotFoundException
* @return \OCP\Files\SimpleFS\ISimpleFile
* @throws NotPermittedException
*/
public function getCachedImage(string $filename): ISimpleFile {
$currentFolder = $this->getCacheFolder();
return $currentFolder->getFile($filename);
}
/**
* Store a file for theming in AppData
*
* @param string $filename
* @param string $data
* @return \OCP\Files\SimpleFS\ISimpleFile
* @throws NotFoundException
* @throws NotPermittedException
*/
public function setCachedImage(string $filename, string $data): ISimpleFile {
$currentFolder = $this->getCacheFolder();
if ($currentFolder->fileExists($filename)) {
$file = $currentFolder->getFile($filename);
} else {
$file = $currentFolder->newFile($filename);
}
$file->putContent($data);
return $file;
}
public function delete(string $key) {
try {
$file = $this->appData->getFolder('images')->getFile($key);
$file->delete();
} catch (NotFoundException $e) {
} catch (NotPermittedException $e) {
}
}
/**
* remove cached files that are not required any longer
*
* @throws NotPermittedException
* @throws NotFoundException
*/
public function cleanup() {
$currentFolder = $this->getCacheFolder();
$folders = $this->appData->getDirectoryListing();
foreach ($folders as $folder) {
if ($folder->getName() !== 'images' && $folder->getName() !== $currentFolder->getName()) {
$folder->delete();
}
}
}
}
|
