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238 lines (211 loc) · 6.1 KB
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<?php
App::uses('CakeEventListener', 'Event');
/**
* Local Image Processor Event Listener for the CakePHP FileStorage plugin
*
* @deprecated Use ImageProcessingListener instead
* @author Florian Krämer
* @copy 2012 Florian Krämer
* @license MIT
*/
class LocalImageProcessingListener extends Object implements CakeEventListener {
/**
* Implemented Events
*
* @return array
*/
public function implementedEvents() {
return array(
'ImageVersion.createVersion' => 'createVersions',
'ImageVersion.removeVersion' => 'removeVersions',
'ImageStorage.afterSave' => 'afterSave',
'ImageStorage.afterDelete' => 'afterDelete',
'FileStorage.ImageHelper.imagePath' => 'imagePath',
);
}
/**
* Creates the different versions of images that are configured
*
* @param Model $Model
* @param array $record
* @param array $operations
* @return void
*/
protected function _createVersions($Model, $record, $operations) {
$Storage = StorageManager::adapter($record['adapter']);
$path = $this->_buildPath($record, true);
$tmpFile = $this->_tmpFile($Storage, $path);
foreach ($operations as $version => $imageOperations) {
$hash = $Model->hashOperations($imageOperations);
$string = $this->_buildPath($record, true, $hash);
if ($Storage->has($string)) {
continue;
}
try {
$image = $Model->processImage($tmpFile, null, array('format' => $record['extension']), $imageOperations);
$result = $Storage->write($string, $image->get($record['extension']), true);
} catch (Exception $e) {
$this->log($e->getMessage(), 'file_storage');
unlink($tmpFile);
throw $e;
}
}
unlink($tmpFile);
}
/**
* Creates versions for a given image record
*
* @param CakeEvent $Event
* @return void
*/
public function createVersions($Event) {
if ($this->_checkEvent($Event)) {
$Model = $Event->subject();
$Storage = $Event->data['storage'];
$record = $Event->data['record'][$Model->alias];
$this->_createVersions($Model, $record, $Event->data['operations']);
$Event->stopPropagation();
}
}
/**
* Removes versions for a given image record
*
* @param CakeEvent $Event
* @return void
*/
public function removeVersions($Event) {
if ($this->_checkEvent($Event)) {
$Model = $Event->subject();
$Storage = $Event->data['storage'];
$record = $Event->data['record'][$Model->alias];
foreach ($Event->data['operations'] as $version => $operations) {
$hash = $Model->hashOperations($operations);
$string = $this->_buildPath($record, true, $hash);
try {
if ($Storage->has($string)) {
$Storage->delete($string);
}
} catch (Exception $e) {
$this->log($e->getMessage(), 'file_storage');
}
}
$Event->stopPropagation();
}
}
/**
* afterDelete
*
* @param CakeEvent $Event
* @return void
*/
public function afterDelete($Event) {
if ($this->_checkEvent($Event)) {
$Model = $Event->subject();
$path = Configure::read('Media.basePath') . $Event->data['record'][$Model->alias]['path'];
if (is_dir($path)) {
$Folder = new Folder($path);
return $Folder->delete();
}
return false;
}
}
/**
* afterSave
*
* @param CakeEvent $Event
* @return void
*/
public function afterSave($Event) {
if ($this->_checkEvent($Event)) {
$Model = $Event->subject();
$Storage = StorageManager::adapter($Model->data[$Model->alias]['adapter']);
$record = $Model->data[$Model->alias];
try {
$id = $record[$Model->primaryKey];
$filename = $Model->stripUuid($id);
$file = $record['file'];
$format = $record['extension'];
$sizes = Configure::read('Media.imageSizes.' . $record['model']);
$record['path'] = $Model->fsPath('images' . DS . $record['model'], $id);
$result = $Storage->write($record['path'] . $filename . '.' . $record['extension'], file_get_contents($file['tmp_name']), true);
$data = $Model->save(array($Model->alias => $record), array(
'validate' => false,
'callbacks' => false));
$operations = Configure::read('Media.imageSizes.' . $record['model']);
if (!empty($operations)) {
$this->_createVersions($Model, $record, $operations);
}
$Model->data = $data;
} catch (Exception $e) {
$this->log($e->getMessage(), 'file_storage');
}
}
}
/**
* Generates the path the image depending on the storage adapter
*
* @param CakeEvent $Event
* @return void
*/
public function imagePath($Event) {
if ($Event->data['image']['adapter'] == 'Local') {
$Helper = $Event->subject();
extract($Event->data);
$path = $this->_buildPath($image, true, $hash);
$Event->data['path'] = $path;
$Event->stopPropagation();
}
}
/**
* It is required to get the file first and write it to a tmp file
*
* The adapter might not be one that is using a local file system, so we first
* get the file from the storage system, store it locally in a tmp file and
* later load the new file that was generated based on the tmp file into the
* storage adapter. This method here just generates the tmp file.
*
* @param $Storage
* @param $path
* @return bool|string
*/
protected function _tmpFile($Storage, $path) {
try {
if (!is_dir(TMP . 'image-processing')) {
mkdir(TMP . 'image-processing');
}
$tmpFile = TMP . 'image-processing' . DS . String::uuid();
$imageData = $Storage->read($path);
file_put_contents($tmpFile, $imageData);
return $tmpFile;
} catch (Exception $e) {
throw $e;
}
}
/**
* Builds a path to a file
*
* @param array $image
* @param boolean $extension
* @param string $hash
*/
protected function _buildPath($image, $extension = true, $hash = null) {
$path = $image['path'] . str_replace('-', '', $image['id']);
if (!empty($hash)) {
$path .= '.' . $hash;
}
if ($extension == true) {
$path .= '.' . $image['extension'];
}
return '/' . $path;
}
/**
* Check if the event is of a type / model we want to process with this listener
*
* @param CakeEvent $Event
* @return boolean
*/
protected function _checkEvent($Event) {
$Model = $Event->subject();
return ($Model instanceOf ImageStorage && isset($Event->data['record'][$Model->alias]['adapter']) && $Event->data['record'][$Model->alias]['adapter'] == 'Local');
}
}