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<?php |
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if (!defined('ABSPATH')) die('No direct access allowed'); |
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|
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if (!class_exists('WP_Optimize_WebP_Images')) : |
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|
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class WP_Optimize_WebP_Images { |
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|
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private $directory = ''; |
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|
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private $filename = ''; |
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|
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private $original_extension = ''; |
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|
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private $webp_extension = '.webp'; |
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|
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private $meta = false; |
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|
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private $sizes = array(); |
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|
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private $images = array(); |
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|
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/** |
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* Constructor |
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*/ |
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private function __construct() { |
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add_action('delete_attachment', array($this, 'delete_related_images')); |
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} |
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|
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/** |
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* Returns singleton instance |
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* |
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* @return WP_Optimize_WebP_Images |
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*/ |
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public static function get_instance() { |
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static $instance = null; |
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if (null === $instance) { |
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$instance = new WP_Optimize_WebP_Images(); |
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} |
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return $instance; |
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} |
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|
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/** |
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* Deletes related image sizes and alternate webp format images |
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* |
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* @param int $attachment_id |
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* @return void |
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*/ |
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public function delete_related_images($attachment_id) { |
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$this->set_meta($attachment_id); |
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$this->set_file_info_properties($attachment_id); |
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$this->set_sizes(); |
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$this->set_images(); |
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$this->delete_images(); |
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$this->reset(); |
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} |
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|
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/** |
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* Sets meta property with attachment metadata |
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* |
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* @param int $attachment_id |
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* @return void |
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*/ |
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private function set_meta($attachment_id) { |
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$this->meta = wp_get_attachment_metadata($attachment_id); |
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} |
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|
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/** |
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* Sets file information properties |
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* |
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* @param int $attachment_id |
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* @return void |
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*/ |
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private function set_file_info_properties($attachment_id) { |
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$file_path = get_attached_file($attachment_id); |
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$file_path_info = pathinfo($file_path); |
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$this->filename = $file_path_info['filename']; |
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$this->original_extension = '.' . $file_path_info['extension']; |
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|
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$file = $this->meta['file'] ?? ''; |
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$basename = $file_path_info['basename']; |
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$sub_directory = ''; |
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if (!empty($file)) { |
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$sub_directory = str_replace($basename, '', $file); |
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} |
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|
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$uploads = wp_get_upload_dir(); |
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$this->directory = $uploads['basedir'] . '/' . $sub_directory; |
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} |
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|
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/** |
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* Returns all available image sizes for the given attachment id |
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*/ |
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private function set_sizes() { |
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if (false !== $this->meta) { |
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$this->sizes = $this->meta['sizes'] ?? array(); |
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} |
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} |
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|
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/** |
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* Sets images property |
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* |
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* @return void |
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*/ |
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private function set_images() { |
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$webp_format = $this->directory . $this->filename . $this->original_extension . $this->webp_extension; |
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$this->images[] = $webp_format; |
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|
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foreach ($this->sizes as $size) { |
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$original_format = $this->directory . $this->filename . '-' . $size['width'] . 'x' . $size['height'] . $this->original_extension; |
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$this->images[] = $original_format; |
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$webp_format = $this->directory . preg_replace('/-scaled$/', '', $this->filename) . '-' . $size['width'] . 'x' . $size['height'] . $this->original_extension . $this->webp_extension; |
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$this->images[] = $webp_format; |
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} |
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|
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} |
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|
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/** |
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* Delete related images |
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* |
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* @return void |
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*/ |
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private function delete_images() { |
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foreach ($this->images as $image) { |
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wp_delete_file($image); |
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} |
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} |
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|
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/** |
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* Reset class property values |
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*/ |
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private function reset() { |
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$this->directory = ''; |
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$this->filename = ''; |
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$this->original_extension = ''; |
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$this->meta = false; |
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$this->sizes = array(); |
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$this->images = array(); |
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} |
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} |
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|
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endif; |
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|
