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<?php |
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|
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namespace Upress\EzCache\BackgroundProcesses; |
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|
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use Upress\EzCache\LicenseApi; |
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use Upress\EzCache\PremiumFeatures; |
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use Upress\EzCache\Settings; |
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use Upress\EzCache\Utilities\Logger; |
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use Upress\EzCache\WebpApi; |
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use \WP_Background_Process; |
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|
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class ConvertWebpProcess { |
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protected $action = 'ezcache_convert_images_to_webp'; |
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protected $hook; |
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protected $convert_queue; |
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|
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public function __construct() { |
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$this->hook = $this->action . '_hook'; |
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$this->convert_queue = $this->action . '_convert_queue'; |
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|
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add_action( $this->hook, [ $this, 'process_batch' ] ); |
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} |
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|
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public function schedule() { |
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$settings = Settings::get_settings(); |
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|
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if ( $settings->enable_webp_support && ! wp_next_scheduled( $this->hook ) ) { |
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wp_schedule_single_event( time(), $this->hook ); |
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|
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wp_safe_remote_get( add_query_arg( [ 'doing_wp_cron' => time() ], site_url( '/wp-cron.php' ) ), [ |
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'user-agent' => 'ezCache Background WebP Processor Cron Dispatcher', |
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'timeout' => 0.1, |
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] ); |
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} |
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} |
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|
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public function add_to_queue( $image_id, $cache_file ) { |
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if ( ! $cache_file ) { |
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return false; |
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} |
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|
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$queue = get_site_option( $this->convert_queue, [] ); |
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|
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$key = 'i' . $image_id; |
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|
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if ( ! isset( $queue[ $key ] ) ) { |
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$queue[ $key ] = [ |
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'image_id' => $image_id, |
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'cache_files' => [], |
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]; |
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} |
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|
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if ( in_array( $cache_file, $queue[ $key ]['cache_files'] ) ) { |
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return true; |
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} |
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|
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$queue[ $key ]['cache_files'][] = $cache_file; |
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|
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update_site_option( $this->convert_queue, $queue ); |
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} |
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|
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protected function shift_queue( $count ) { |
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$queue = get_site_option( $this->convert_queue, [] ); |
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if ( ! count( $queue ) ) { |
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return []; |
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} |
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|
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$to_run = array_splice( $queue, 0, $count ); |
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|
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update_site_option( $this->convert_queue, $queue ); |
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|
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return $to_run; |
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} |
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|
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protected function is_queue_empty() { |
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$queue = get_site_option( $this->convert_queue, [] ); |
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|
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return count( $queue ) == 0; |
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} |
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|
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|
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public function process_batch() { |
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global $wpdb; |
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|
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$queue = $this->shift_queue( 15 ); |
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if ( 0 >= count( $queue ) ) { |
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return; |
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} |
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|
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$image_ids = array_column( $queue, 'image_id' ); |
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$images = $wpdb->get_results( |
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$wpdb->prepare( |
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"SELECT * FROM `{$wpdb->prefix}ezcache_webp_images` WHERE `id` IN (" . rtrim( str_repeat( '%d,', count( $image_ids ) ), ',' ) . ") LIMIT 15", |
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$image_ids |
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) |
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); |
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$precached_images = []; |
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foreach ( $images as $image ) { |
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$precached_images[ $image->id ] = $image; |
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} |
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|
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foreach ( $queue as $data ) { |
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$image_id = $data['image_id']; |
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$cache_files = $data['cache_files']; |
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|
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try { |
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$this->convert_image( $image_id, $cache_files, $precached_images ); |
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} catch ( \Exception $ex ) { |
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Logger::log( "ezCache ConvertWebpProcess::convert_image error: {$ex->getMessage()}\n{$ex->getTraceAsString()}" ); |
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} |
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} |
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|
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if ( ! $this->is_queue_empty() ) { |
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$this->schedule(); |
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|
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return; |
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} |
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|
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$wpdb->query( "OPTIMIZE TABLE `{$wpdb->prefix}ezcache_webp_images`" ); |
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} |
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|
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protected function convert_image( $image_id, $cache_files, $precached_images = [] ) { |
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global $wpdb; |
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|
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$image = isset( $precached_images[$image_id] ) ? $precached_images[$image_id] : $wpdb->get_row( |
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$wpdb->prepare( |
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"SELECT * FROM `{$wpdb->prefix}ezcache_webp_images` WHERE `id` = %s LIMIT 1", |
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[ $image_id ] |
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) |
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); |
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|
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if ( ! $image ) { |
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Logger::log( "ezCache WebP Background Processor: image with ID {$image_id} was not found." ); |
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|
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return; |
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} |
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|
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if ( 'completed' == $image->status ) { |
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$this->replace_links( $cache_files, $image->url, $image->webp_url ); |
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|
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return; |
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} |
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|
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// only download the file if we don't have it locally |
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if ( ! file_exists( $image->webp_path ) || filesize( $image->webp_path ) <= 2 || stripos( file_get_contents( $image->webp_path ), '"success":false' ) ) { |
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// Premium gate — Pro is unlocked for everyone, kept as defensive guard. |
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if ( ! PremiumFeatures::is_premium() ) { |
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Logger::log( "ezCache WebP: image {$image_id} skipped, premium required." ); |
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return; |
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} |
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|
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$converter = new WebpApi( 'unlocked_pro' ); |
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$response = $converter->convert( $image->path ); |
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|
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if ( is_wp_error( $response ) || stripos( $response['info']['content-type'], 'json' ) || stripos( $response['data'], '"success":false' ) ) { |
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$wpdb->query( |
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$wpdb->prepare( |
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"UPDATE `{$wpdb->prefix}ezcache_webp_images` SET `status` = %s WHERE `id` = %d", |
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[ 'failed', $image_id ] |
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) |
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); |
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Logger::log( "ezCache WebP Background Processor: " . ( is_wp_error( $response ) ? $response->get_error_message() : $response['data'] ) ); |
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|
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// delete the broken file |
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if ( file_exists( $image->webp_path ) ) { |
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unlink( $image->webp_path ); |
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} |
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|
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return; |
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} |
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|
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file_put_contents( $image->webp_path, $response['data'] ); |
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} |
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|
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$original_size = filesize( $image->path ); |
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$webp_size = filesize( $image->webp_path ); |
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|
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$wpdb->query( |
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$wpdb->prepare( |
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"UPDATE `{$wpdb->prefix}ezcache_webp_images` SET `status` = %s, `original_size` = %d, `webp_size` = %d WHERE `id` = %d", |
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[ 'completed', $original_size, $webp_size, $image_id ] |
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) |
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); |
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|
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$this->replace_links( $cache_files, $image->url, $image->webp_url ); |
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} |
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|
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protected function replace_links( $cache_files, $image_url, $webp_url ) { |
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foreach ( $cache_files as $cache_file ) { |
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if ( ! file_exists( $cache_file ) ) { |
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// File has been deleted? maybe the cache got cleared before the process finished |
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continue; |
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} |
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|
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$handle = @fopen( $cache_file, 'c+' ); |
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|
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if ( $handle && @flock( $handle, LOCK_EX ) ) { |
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$contents = gzdecode( fread( $handle, filesize( $cache_file ) ) ); |
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|
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$contents = preg_replace( |
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'/' . preg_quote( $image_url, '/' ) . '(?!\.webp)/i', |
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$webp_url, |
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$contents |
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); |
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|
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ftruncate( $handle, 0 ); |
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fseek( $handle, 0 ); |
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fwrite( $handle, gzencode( $contents, 6, FORCE_GZIP ) ); |
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flock( $handle, LOCK_UN ); |
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} else { |
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Logger::log( "ezCache WebP Background Processor: Could not get a lock on {$cache_file}, failed updating WebP image URLs" ); |
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} |
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|
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if ( $handle ) { |
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fclose( $handle ); |
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} |
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} |
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} |
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} |
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|
