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<?php
namespace Imagify\Optimization\Process;
use Imagify\Optimization\File;
defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
/**
* Optimization class for the attachments in the WP library.
* This class constructor accepts:
* - A post ID (int).
* - A \WP_Post object.
* - A \Imagify\Media\MediaInterface object.
* - A \Imagify\Media\DataInterface object.
*
* @since 1.9
* @author Grégory Viguier
*/
class WP extends AbstractProcess {
/** ----------------------------------------------------------------------------------------- */
/** MISSING THUMBNAILS ====================================================================== */
/** ----------------------------------------------------------------------------------------- */
/**
* Get the sizes for this media that have not get through optimization.
* No sizes are returned if the file is not optimized, has no backup, or is not an image.
* The 'full' size os never returned.
*
* @since 1.9
* @access public
* @author Grégory Viguier
*
* @return array|WP_Error {
* A WP_Error object on failure.
* An array of data for the thumbnail sizes on success.
* Size names are used as array keys.
*
* @type int $width The image width.
* @type int $height The image height.
* @type bool $crop True to crop, false to resize.
* @type string $name The size name.
* @type string $file The name the thumbnail "should" have.
* }
*/
public function get_missing_sizes() {
// The media must have been optimized once and have a backup.
if ( ! $this->is_valid() ) {
return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
}
$media = $this->get_media();
if ( ! $media->is_supported() ) {
return new \WP_Error( 'media_not_supported', __( 'This media is not supported.', 'imagify' ) );
}
$data = $this->get_data();
if ( ! $data->is_optimized() ) {
return new \WP_Error( 'media_not_optimized', __( 'This media is not optimized yet.', 'imagify' ) );
}
if ( ! $media->has_backup() ) {
return new \WP_Error( 'no_backup', __( 'This file has no backup file.', 'imagify' ) );
}
if ( ! $media->is_image() ) {
return new \WP_Error( 'media_not_an_image', __( 'This media is not an image.', 'imagify' ) );
}
// Compare registered sizes and optimized sizes.
$context_sizes = $media->get_context_instance()->get_thumbnail_sizes();
$optimized_sizes = $data->get_optimization_data();
$missing_sizes = array_diff_key( $context_sizes, $optimized_sizes['sizes'] );
if ( ! $missing_sizes ) {
// We have everything we need.
return [];
}
$media_sizes = $media->get_media_files();
$full_size = $media_sizes['full'];
if ( ! $full_size['path'] || ! $full_size['width'] || ! $full_size['height'] ) {
return [];
}
$file_name = $this->filesystem->path_info( $full_size['path'] );
$file_name = $file_name['file_base'] . '-{%suffix%}.' . $file_name['extension'];
// Test if the missing sizes are needed.
foreach ( $missing_sizes as $size_name => $size_data ) {
if ( $full_size['width'] === $size_data['width'] && $full_size['height'] === $size_data['height'] ) {
// Same dimensions as the full size.
unset( $missing_sizes[ $size_name ] );
continue;
}
if ( ! empty( $media_sizes[ $size_name ]['disabled'] ) ) {
// This size must not be optimized.
unset( $missing_sizes[ $size_name ] );
continue;
}
$resize_result = image_resize_dimensions( $full_size['width'], $full_size['height'], $size_data['width'], $size_data['height'], $size_data['crop'] );
if ( ! $resize_result ) {
// This thumbnail is not needed, it is smaller than this size.
unset( $missing_sizes[ $size_name ] );
continue;
}
// Provide what should be the file name.
list( , , , , $new_width, $new_height ) = $resize_result;
$missing_sizes[ $size_name ]['file'] = str_replace( '{%suffix%}', "{$new_width}x{$new_height}", $file_name );
}
return $missing_sizes;
}
/**
* Optimize missing thumbnail sizes.
*
* @since 1.9
* @access public
* @author Grégory Viguier
*
* @return bool|WP_Error True if successfully launched. A \WP_Error instance on failure.
*/
public function optimize_missing_thumbnails() {
if ( ! $this->is_valid() ) {
return new \WP_Error( 'invalid_media', __( 'This media is not valid.', 'imagify' ) );
}
if ( ! $this->get_media()->is_supported() ) {
return new \WP_Error( 'media_not_supported', __( 'This media is not supported.', 'imagify' ) );
}
$missing_sizes = $this->get_missing_sizes();
if ( ! $missing_sizes ) {
return new \WP_Error( 'no_sizes', __( 'No thumbnails seem to be missing.', 'imagify' ) );
}
if ( is_wp_error( $missing_sizes ) ) {
return $missing_sizes;
}
if ( $this->is_locked() ) {
return new \WP_Error( 'media_locked', __( 'This media is already being processed.', 'imagify' ) );
}
$this->lock();
// Create the missing thumbnails.
$sizes = $this->create_missing_thumbnails( $missing_sizes );
if ( ! $sizes ) {
$this->unlock();
return new \WP_Error( 'thumbnail_creation_failed', __( 'The thumbnails failed to be created.', 'imagify' ) );
}
$optimization_level = $this->get_data()->get_optimization_level();
if ( false === $optimization_level ) {
$this->unlock();
return new \WP_Error( 'optimization_level_not_set', __( 'The optimization level of this media seems to have disappear from the database. You should restore this media and then launch a new optimization.', 'imagify' ) );
}
$args = [
'hook_suffix' => 'optimize_missing_thumbnails',
'locked' => true,
];
// Optimize.
return $this->optimize_sizes( array_keys( $sizes ), $optimization_level, $args );
}
/**
* Create all missing thumbnails if they don't exist and update the attachment metadata.
*
* @since 1.9
* @access protected
* @see $this->get_missing_sizes()
* @author Grégory Viguier
*
* @param array $missing_sizes array {
* An array of data for the thumbnail sizes on success.
* Size names are used as array keys.
*
* @type int $width The image width.
* @type int $height The image height.
* @type bool $crop True to crop, false to resize.
* @type string $name The size name.
* @type string $file The name the thumbnail "should" have.
* }
* @return array {
* An array of thumbnail data (those without errors):
*
* @type string $file File name.
* @type int $width The image width.
* @type int $height The image height.
* @type string $mime-type The mime type.
* }
*/
protected function create_missing_thumbnails( $missing_sizes ) {
if ( ! $missing_sizes ) {
return [];
}
$media = $this->get_media();
$media_id = $media->get_id();
$metadata = wp_get_attachment_metadata( $media_id );
$metadata['sizes'] = ! empty( $metadata['sizes'] ) && is_array( $metadata['sizes'] ) ? $metadata['sizes'] : [];
$destination_dir = $this->filesystem->dir_path( $media->get_raw_fullsize_path() );
$backup_file = new File( $media->get_backup_path() );
$without_errors = [];
$has_new_data = false;
// Create the missing thumbnails.
foreach ( $missing_sizes as $size_name => $thumbnail_data ) {
// The path to the destination file.
$thumbnail_data['path'] = $destination_dir . $thumbnail_data['file'];
if ( ! $this->filesystem->exists( $thumbnail_data['path'] ) ) {
$result = $backup_file->create_thumbnail( $thumbnail_data );
if ( is_array( $result ) ) {
// New file.
$metadata['sizes'][ $size_name ] = $result;
$has_new_data = true;
}
} else {
$result = true;
}
if ( ! empty( $metadata['sizes'][ $size_name ] ) && ! is_wp_error( $result ) ) {
// Not an error.
$without_errors[ $size_name ] = $metadata['sizes'][ $size_name ];
}
}
// Save the new data into the attachment metadata.
if ( $has_new_data ) {
/**
* Here we don't use wp_update_attachment_metadata() to prevent triggering unwanted hooks.
*/
update_post_meta( $media_id, '_wp_attachment_metadata', $metadata );
}
return $without_errors;
}
}
