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<?php |
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namespace Colligator; |
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use Intervention\Image\ImageManager; |
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use League\Flysystem\AdapterInterface; |
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use League\Flysystem\Config as FlysystemConfig; |
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class CoverCache |
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{ |
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protected $filesystem; |
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protected $imageManager; |
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protected $fsConfig; |
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public function __construct(AdapterInterface $filesystem, ImageManager $imageManager, FlysystemConfig $fsConfig) |
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{ |
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$this->filesystem = $filesystem; |
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$this->imageManager = $imageManager; |
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$this->fsConfig = $fsConfig; |
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} |
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/** |
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* @param string $key |
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* |
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* @return string |
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*/ |
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public function url($key) |
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{ |
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return sprintf('https://s3.%s.amazonaws.com/%s/%s', |
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config('filesystems.disks.s3.region'), |
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config('filesystems.disks.s3.bucket'), |
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$key |
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); |
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} |
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/** |
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* @param string $url |
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* @param int $maxHeight |
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* |
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* @throws \ErrorException |
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* |
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* @return CachedImage |
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*/ |
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public function putUrl($url, $maxHeight = 0) |
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{ |
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return $this->store($url, null, $maxHeight); |
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} |
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/** |
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* @param string $blob |
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* @param int $maxHeight |
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* |
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* @throws \ErrorException |
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* |
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* @return CachedImage |
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*/ |
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public function putBlob($blob, $maxHeight = 0) |
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{ |
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return $this->store(null, $blob, $maxHeight); |
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} |
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/** |
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* Retrieves the content of an URL. |
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* |
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* @return string |
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*/ |
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protected function download($sourceUrl) |
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{ |
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// TODO: Use flysystem-http-downloader instead, but needs update |
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// https://github.com/indigophp/flysystem-http-downloader/pull/2 |
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return file_get_contents($sourceUrl); |
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} |
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/** |
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* Store a file in cache. |
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* |
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* @param string $sourceUrl |
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* @param string $data |
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* @param int $maxHeight |
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* @return CachedImage |
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* @throws \ErrorException |
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*/ |
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protected function store($sourceUrl = null, $data = null, $maxHeight = 0) |
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{ |
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if (is_null($data)) { |
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$data = $this->download($sourceUrl); |
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if (!$data) { |
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throw new \ErrorException('[CoverCache] Failed to download ' . $sourceUrl); |
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} |
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} |
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$cacheKey = sha1($data); |
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$img = $this->imageManager->make($data); |
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if ($maxHeight && $img->height() > $maxHeight) { |
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\Log::debug('[CachedImage] Resizing from ' . $img->height() . ' to ' . $maxHeight); |
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$img->heighten($maxHeight); |
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$data = strval($img->encode('jpg')); |
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} |
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if ($img->width() / $img->height() > 1.4) { |
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throw new \ErrorException('[CoverCache] Not accepting images with w/h ratio > 1.4'); |
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} |
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\Log::debug('[CachedImage] Storing image as ' . $img->width() . ' x ' . $img->height() . ', ' . strlen($data) . ' bytes'); |
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if (!$this->filesystem->write($cacheKey, $data, $this->fsConfig)) { |
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throw new \ErrorException('[CoverCache] Failed to upload thumb to S3'); |
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} |
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\Log::debug('[CachedImage] Wrote cached version as ' . $cacheKey); |
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return new CachedImage($this, $cacheKey); |
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} |
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public function getMetadata($cacheKey) { |
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$data = $this->filesystem->read($cacheKey); |
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$contents = strval($data['contents']); |
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$img = $this->imageManager->make($contents); |
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return [ |
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'size' => strlen($contents), |
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'width' => $img->width(), |
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'height' => $img->height(), |
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'mime' => $img->mime(), |
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]; |
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} |
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/** |
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* Return a representation with height no more than $maxHeight. |
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* |
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* @param string $maxHeight |
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* |
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* @throws \ErrorException |
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* |
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* @return CachedImage |
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*/ |
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public function thumb($cacheKey, $maxHeight) |
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{ |
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$data = $this->filesystem->read($cacheKey); |
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$blob = strval($data['contents']); |
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\Log::debug('[CachedImage] Read ' .$cacheKey . ': ' . strlen($blob) . ' bytes'); |
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return $this->putBlob($blob, $maxHeight); |
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} |
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} |
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scriptotek /
colligator-backend
