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<?php |
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namespace Colligator; |
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use Intervention\Image\Image; |
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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 CachedImage |
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{ |
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public $sourceUrl; |
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public $maxHeight; |
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protected $_metadata; |
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public function __construct($url, $maxHeight = 0, AdapterInterface $filesystem = null, ImageManager $imageManager = null) |
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{ |
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$this->sourceUrl = $url; |
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$this->maxHeight = intval($maxHeight); |
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$this->filesystem = $filesystem ?: \Storage::disk('s3')->getAdapter(); |
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$this->imageManager = $imageManager ?: app('Intervention\Image\ImageManager'); |
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$maxAge = 3153600; // 30 days |
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$this->fsConfig = new FlysystemConfig([ |
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'CacheControl' => 'max-age=' . $maxAge . ', public', |
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]); |
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} |
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public function getMetadata() |
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{ |
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if (is_null($this->_metadata)) { |
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$data = $this->filesystem->read($this->basename()); |
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$contents = strval($data['contents']); |
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$img = $this->imageManager->make($contents); |
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$this->setMetadata($contents, $img); |
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} |
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return $this->_metadata; |
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} |
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protected function setMetadata($file, Image $img) |
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{ |
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$this->_metadata = [ |
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'size' => strlen($file), |
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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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public function width() |
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{ |
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return $this->getMetadata()['width']; |
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} |
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public function height() |
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{ |
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return $this->getMetadata()['height']; |
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} |
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public function mime() |
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{ |
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return $this->getMetadata()['mime']; |
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} |
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public function size() |
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{ |
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return $this->getMetadata()['size']; |
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} |
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public function basename() |
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{ |
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return sha1($this->sourceUrl . $this->maxHeight); |
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} |
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/** |
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* Retrieves the content of an URL. |
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* |
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* @return string |
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*/ |
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public function download() |
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{ |
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// TODO: Use flysystem-http-downloader instead, but needs update |
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// https://github.com/indigophp/flysystem-http-downloader/pull/2 |
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return file_get_contents($this->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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* @throws \ErrorException |
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* |
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* @return CachedImage |
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*/ |
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public function store($data = null) |
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{ |
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if (is_null($data)) { |
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$data = $this->download(); |
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} |
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if (!$data) { |
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throw new \ErrorException('[CoverCache] Failed to download ' . $this->sourceUrl); |
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} |
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$img = $this->imageManager->make($data); |
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if ($this->maxHeight && $img->height() > $this->maxHeight) { |
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\Log::debug('[CachedImage] Resizing from ' . $img->height() . ' to ' . $this->maxHeight); |
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$img->heighten($this->maxHeight); |
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$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: ' . $this->sourceUrl); |
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} |
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$this->setMetadata($data, $img); |
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\Log::debug('[CachedImage] Storing image as ' . $img->width() . ' x ' . $img->height() . ', ' . strlen($data) . ' bytes'); |
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if (!$this->filesystem->write($this->basename(), $data, $this->fsConfig)) { |
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throw new \ErrorException('[CoverCache] Failed to upload to S3: ' . $this->sourceUrl); |
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} |
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\Log::debug('[CachedImage] Wrote cached version of ' . $this->sourceUrl . ' as ' . $this->basename()); |
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return $this; |
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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 $maxHeight |
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* |
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* @throws \ErrorException |
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* |
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* @return CachedImage |
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*/ |
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public function thumb($maxHeight) |
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{ |
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return \CoverCache::put($this->sourceUrl, $maxHeight); |
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} |
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} |
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scriptotek /
colligator-backend
