Fisharebest\Webtrees\Http\Controllers\MediaController

Complexity

Total Complexity

20

Size/Duplication

Total Lines	183
Duplicated Lines	0 %

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	graphicsDriver()	0	8	2
A	glideSignature()	0	5	1
C	mediaThumbnail()	0	29	7
A	unusedMediaThumbnail()	0	19	3
A	fileExtensionAsImage()	0	7	1
A	httpStatusAsImage()	0	6	1
A	glideServer()	0	11	1
B	generateImage()	0	22	4

<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2017 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Http\Controllers;

use ErrorException;
use Fisharebest\Webtrees\Media;
use Fisharebest\Webtrees\MediaFile;
use Fisharebest\Webtrees\Site;
use Fisharebest\Webtrees\Tree;
use League\Flysystem\Adapter\Local;
use League\Flysystem\Filesystem;
use League\Glide\Filesystem\FileNotFoundException;
use League\Glide\Server;
use League\Glide\ServerFactory;
use League\Glide\Signatures\Signature;
use League\Glide\Signatures\SignatureException;
use League\Glide\Signatures\SignatureFactory;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Controller for the media page and displaying images.
 */
class MediaController extends BaseController {
	/**
	 * Show an image/thumbnail, with/without a watermark.
	 *
	 * @param Request $request
	 *
	 * @return Response
	 */
	public function mediaThumbnail(Request $request): Response {
		/** @var Tree $tree */
		$tree    = $request->attributes->get('tree');
		$xref    = $request->get('xref');
		$fact_id = $request->get('fact_id');
		$media   = Media::getInstance($xref, $tree);

		if ($media === null) {
			return $this->httpStatusAsImage(Response::HTTP_NOT_FOUND);
		}

		if (!$media->canShow()) {
			return $this->httpStatusAsImage(Response::HTTP_FORBIDDEN);
		}

		// @TODO handle SVG files
		foreach ($media->mediaFiles() as $media_file) {

The method mediaFiles() does not exist on Fisharebest\Webtrees\Source.

The method mediaFiles() does not exist on Fisharebest\Webtrees\Family.

The method mediaFiles() does not exist on Fisharebest\Webtrees\GedcomRecord. It seems like you code against a sub-type of Fisharebest\Webtrees\GedcomRecord such as Fisharebest\Webtrees\Media.

The method mediaFiles() does not exist on Fisharebest\Webtrees\Repository.

The method mediaFiles() does not exist on Fisharebest\Webtrees\Individual.

The method mediaFiles() does not exist on Fisharebest\Webtrees\Note.

			if ($media_file->factId() === $fact_id) {
				if ($media_file->isExternal()) {
					return new RedirectResponse($media_file->filename());
				} else if ($media_file->isImage()) {
					return $this->generateImage($media_file, $request->query->all());
				} else {
					return $this->fileExtensionAsImage($media_file->extension());
				}
			}
		}

		return $this->httpStatusAsImage(Response::HTTP_NOT_FOUND);
	}

	/**
	 * Generate a thumbnail for an unsed media file (i.e. not used by any media object).
	 *
	 * @param Request $request
	 *
	 * @return Response
	 */
	public function unusedMediaThumbnail(Request $request): Response {
		$folder = $request->get('folder');
		$file   = $request->get('file');

		try {
			$server = $this->glideServer($folder);
			$path   = $server->makeImage($file, $request->query->all());
			$cache  = $server->getCache();

			return new Response($cache->read($path), Response::HTTP_OK, [
				'Content-Type'   => $cache->getMimeType($path),
				'Content-Length' => $cache->getSize($path),
				'Cache-Control'  => 'max-age=31536000, public',
				'Expires'        => date_create('+1 years')->format('D, d M Y H:i:s') . ' GMT',
			]);
		} catch (FileNotFoundException $ex) {
			return $this->httpStatusAsImage(Response::HTTP_NOT_FOUND);
		} catch (ErrorException $ex) {
			return $this->httpStatusAsImage(Response::HTTP_INTERNAL_SERVER_ERROR);
		}
	}

	/**
	 * Generate a thumbnail image for a file.
	 *
	 * @param MediaFile $media_file
	 * @param array     $params
	 *
	 * @return Response
	 */
	private function generateImage(MediaFile $media_file, array $params): Response {
		try {
			// Validate HTTP signature
			$signature = $this->glideSignature();

			$signature->validateRequest(parse_url(WT_BASE_URL . 'index.php', PHP_URL_PATH), $params);

			$server = $this->glideServer($media_file->folder());
			$path   = $server->makeImage($media_file->filename(), $params);

			return new Response($server->getCache()->read($path), Response::HTTP_OK, [
				'Content-Type'   => $server->getCache()->getMimeType($path),
				'Content-Length' => $server->getCache()->getSize($path),
				'Cache-Control'  => 'max-age=31536000, public',
				'Expires'        => date_create('+1 years')->format('D, d M Y H:i:s') . ' GMT',
			]);
		} catch (SignatureException $ex) {
			return $this->httpStatusAsImage(Response::HTTP_FORBIDDEN);
		} catch (FileNotFoundException $ex) {
			return $this->httpStatusAsImage(Response::HTTP_NOT_FOUND);
		} catch (ErrorException $ex) {
			return $this->httpStatusAsImage(Response::HTTP_INTERNAL_SERVER_ERROR);
		}
	}

	/**
	 * Create a glide server to generate files in the specified folder
	 *
	 * Caution: $media_folder may contain relative paths: ../../
	 *
	 * @param string $media_folder
	 *
	 * @return Server
	 */
	private function glideServer(string $media_folder): Server {
		$cache_folder     = new Filesystem(new Local(WT_DATA_DIR . 'thumbnail-cache/' . md5($media_folder)));
		$driver           = $this->graphicsDriver();
		$source_folder    = new Filesystem(new Local($media_folder));
		$watermark_folder = new Filesystem(new Local('assets'));

		return ServerFactory::create([
			'cache'      => $cache_folder,
			'driver'     => $driver,
			'source'     => $source_folder,
			'watermarks' => $watermark_folder,
		]);
	}

	/**
	 * Generate a signature, to verify the request parameters.
	 *
	 * @return Signature
	 */
	private function glideSignature(): Signature {
		$glide_key = Site::getPreference('glide-key');
		$signature = SignatureFactory::create($glide_key);

		return $signature;
	}

	/**
	 * Which graphics driver should we use for glide/intervention?
	 *
	 * Prefer ImageMagick
	 *
	 * @return string
	 */
	private function graphicsDriver(): string {
		if (extension_loaded('imagick')) {
			$driver = 'imagick';
		} else {
			$driver = 'gd';
		}

		return $driver;
	}

	/**
	 * Send a dummy image, to replace one that could not be found or created.
	 *
	 * @param int $status HTTP status code
	 *
	 * @return Response
	 */
	private function httpStatusAsImage(int $status): Response {
		$svg = '<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><rect width="100" height="100" fill="#F88" /><text x="5" y="55" font-family="Verdana" font-size="35">' . $status . '</text></svg>';

		// We can't use the actual status code, as browser's won't show images with 4xx/5xx
		return new Response($svg, Response::HTTP_OK, [
			'Content-Type' => 'image/svg+xml'
		]);
	}

	/**
	 * Send a dummy image, to replace a non-image file.
	 *
	 * @param string $extension
	 *
	 * @return Response
	 */
	private function fileExtensionAsImage(string $extension): Response {
		$extension = '.' . strtolower($extension);

		$svg = '<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><rect width="100" height="100" fill="#88F" /><text x="5" y="60" font-family="Verdana" font-size="30">' . $extension . '</text></svg>';

		return new Response($svg, Response::HTTP_OK, [
			'Content-Type' => 'image/svg+xml'
		]);
	}
}