/**
* Execute the action
*/
public function execute()
{
parent::execute();
// Get api key
$this->apiKey = BackendModel::getModuleSetting($this->getModule(), 'api_key', null);
// Get uncompressed images list
$this->images = BackendCompressionModel::getImagesFromFolders();
if (!empty($this->images)) {
// Compress each image from each folder
$output = 'Compressing ' . count($this->images) . ' images...' . "<br />\r\n";
BackendCompressionModel::writeToCacheFile($output, true);
foreach ($this->images as $image) {
$tinyPNGApi = new TinyPNGApi($this->apiKey);
// Shrink the image and check if succesful
if ($tinyPNGApi->shrink($image['full_path'])) {
// Check if the file was successfully downloaded.
if ($tinyPNGApi->download($image['full_path'])) {
$output = 'Compression succesful for image ' . $image['filename'] . '. Saved ' . number_format($tinyPNGApi->getSavingSize() / 1024, 2) . ' KB' . ' bytes. (' . $tinyPNGApi->getSavingPercentage() . '%)';
BackendCompressionModel::writeToCacheFile($output);
// Save to db
$imageInfo = array('filename' => $image['filename'], 'path' => $image['full_path'], 'original_size' => $tinyPNGApi->getInputSize(), 'compressed_size' => $tinyPNGApi->getOutputSize(), 'saved_bytes' => $tinyPNGApi->getSavingSize(), 'saved_percentage' => $tinyPNGApi->getSavingPercentage(), 'checksum_hash' => sha1_file($image['full_path']), 'compressed_on' => BackendModel::getUTCDate());
BackendCompressionModel::insertImageHistory($imageInfo, $image['file_compressed_before']);
}
} else {
BackendCompressionModel::writeToCacheFile($tinyPNGApi->getErrorMessage());
}
}
BackendCompressionModel::writeToCacheFile("...Done!");
} else {
BackendCompressionModel::writeToCacheFile('There are no images that can be compressed.', true);
}
// Print the output for debug purposes
$output = BackendCompressionModel::readCacheFile();
print $output;
}
