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Edit File : img-optm.cls.php \| Size : 65.27 KB
<?php /** * The class to optimize image. * * @since 2.0 * @package LiteSpeed * @subpackage LiteSpeed/src * @author LiteSpeed Technologies <info@litespeedtech.com> / namespace LiteSpeed; use WpOrg\Requests\Autoload; use WpOrg\Requests\Requests; defined('WPINC') \|\| exit(); class Img_Optm extends Base { const LOG_TAG = '🗜️'; const CLOUD_ACTION_NEW_REQ = 'new_req'; const CLOUD_ACTION_TAKEN = 'taken'; const CLOUD_ACTION_REQUEST_DESTROY = 'imgoptm_destroy'; const CLOUD_ACTION_CLEAN = 'clean'; const TYPE_NEW_REQ = 'new_req'; const TYPE_RESCAN = 'rescan'; const TYPE_DESTROY = 'destroy'; const TYPE_RESET_COUNTER = 'reset_counter'; const TYPE_CLEAN = 'clean'; const TYPE_PULL = 'pull'; const TYPE_BATCH_SWITCH_ORI = 'batch_switch_ori'; const TYPE_BATCH_SWITCH_OPTM = 'batch_switch_optm'; const TYPE_CALC_BKUP = 'calc_bkup'; const TYPE_RESET_ROW = 'reset_row'; const TYPE_RM_BKUP = 'rm_bkup'; const STATUS_NEW = 0; // 'new'; const STATUS_RAW = 1; // 'raw'; const STATUS_REQUESTED = 3; // 'requested'; const STATUS_NOTIFIED = 6; // 'notified'; const STATUS_DUPLICATED = 8; // 'duplicated'; const STATUS_PULLED = 9; // 'pulled'; const STATUS_FAILED = -1; // 'failed'; const STATUS_MISS = -3; // 'miss'; const STATUS_ERR_FETCH = -5; // 'err_fetch'; const STATUS_ERR_404 = -6; // 'err_404'; const STATUS_ERR_OPTM = -7; // 'err_optm'; const STATUS_XMETA = -8; // 'xmeta'; const STATUS_ERR = -9; // 'err'; const DB_SIZE = 'litespeed-optimize-size'; const DB_SET = 'litespeed-optimize-set'; const DB_NEED_PULL = 'need_pull'; private $wp_upload_dir; private $tmp_pid; private $tmp_type; private $tmp_path; private $_img_in_queue = array(); private $_existed_src_list = array(); private $_pids_set = array(); private $_thumbnail_set = ''; private $_table_img_optm; private $_table_img_optming; private $_cron_ran = false; private $__media; private $__data; protected $_summary; private $_format = ''; /* * Init * * @since 2.0 / public function __construct() { Debug2::debug2('[ImgOptm] init'); $this->wp_upload_dir = wp_upload_dir(); $this->__media = $this->cls('Media'); $this->__data = $this->cls('Data'); $this->_table_img_optm = $this->__data->tb('img_optm'); $this->_table_img_optming = $this->__data->tb('img_optming'); $this->_summary = self::get_summary(); if (empty($this->_summary['next_post_id'])) { $this->_summary['next_post_id'] = 0; } if ($this->conf(Base::O_IMG_OPTM_WEBP)) { $this->_format = 'webp'; if ($this->conf(Base::O_IMG_OPTM_WEBP) == 2) { $this->_format = 'avif'; } } } /* * Gather images auto when update attachment meta * This is to optimize new uploaded images first. Stored in img_optm table. * Later normal process will auto remove these records when trying to optimize these images again * * @since 4.0 / public function wp_update_attachment_metadata( $meta_value, $post_id ) { global $wpdb; self::debug2('🖌️ Auto update attachment meta [id] ' . $post_id); if (empty($meta_value['file'])) { return; } // Load gathered images if (!$this->_existed_src_list) { // To aavoid extra query when recalling this function self::debug('SELECT src from img_optm table'); if ($this->__data->tb_exist('img_optm')) { $q = "SELECT src FROM `$this->_table_img_optm` WHERE post_id = %d"; $list = $wpdb->get_results($wpdb->prepare($q, $post_id)); foreach ($list as $v) { $this->_existed_src_list[] = $post_id . '.' . $v->src; } } if ($this->__data->tb_exist('img_optming')) { $q = "SELECT src FROM `$this->_table_img_optming` WHERE post_id = %d"; $list = $wpdb->get_results($wpdb->prepare($q, $post_id)); foreach ($list as $v) { $this->_existed_src_list[] = $post_id . '.' . $v->src; } } else { $this->__data->tb_create('img_optming'); } } // Prepare images $this->tmp_pid = $post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_append_img_queue($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']); } if (!$this->_img_in_queue) { self::debug('auto update attachment meta 2 bypass: empty _img_in_queue'); return; } // Save to DB $this->_save_raw(); // $this->_send_request(); } /* * Auto send optm request * * @since 2.4.1 * @access public / public static function cron_auto_request() { if (!wp_doing_cron()) { return false; } $instance = self::cls(); $instance->new_req(); } /* * Calculate wet run allowance * * @since 3.0 / public function wet_limit() { $wet_limit = 1; if (!empty($this->_summary['img_taken'])) { $wet_limit = pow($this->_summary['img_taken'], 2); } if ($wet_limit == 1 && !empty($this->_summary['img_status.' . self::STATUS_ERR_OPTM])) { $wet_limit = pow($this->_summary['img_status.' . self::STATUS_ERR_OPTM], 2); } if ($wet_limit < Cloud::IMG_OPTM_DEFAULT_GROUP) { return $wet_limit; } // No limit return false; } /* * Push raw img to image optm server * * @since 1.6 * @access public / public function new_req() { global $wpdb; // check if is running if (!empty($this->_summary['is_running']) && time() - $this->_summary['is_running'] < apply_filters('litespeed_imgoptm_new_req_interval', 3600)) { self::debug('The previous req was in 3600s.'); return; } $this->_summary['is_running'] = time(); self::save_summary(); // Check if has credit to push $err = false; $allowance = Cloud::cls()->allowance(Cloud::SVC_IMG_OPTM, $err); $wet_limit = $this->wet_limit(); self::debug("allowance_max $allowance wet_limit $wet_limit"); if ($wet_limit && $wet_limit < $allowance) { $allowance = $wet_limit; } if (!$allowance) { self::debug('❌ No credit'); Admin_Display::error(Error::msg($err)); $this->_finished_running(); return; } self::debug('preparing images to push'); $this->__data->tb_create('img_optming'); $q = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status = %d"; $q = $wpdb->prepare($q, array( self::STATUS_REQUESTED )); $total_requested = $wpdb->get_var($q); $max_requested = $allowance 1; if ($total_requested > $max_requested) { self::debug('❌ Too many queued images (' . $total_requested . ' > ' . $max_requested . ')'); Admin_Display::error(Error::msg('too_many_requested')); $this->_finished_running(); return; } $allowance -= $total_requested; if ($allowance < 1) { self::debug('❌ Too many requested images ' . $total_requested); Admin_Display::error(Error::msg('too_many_requested')); $this->_finished_running(); return; } // Limit maximum number of items waiting to be pulled $q = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status = %d"; $q = $wpdb->prepare($q, array( self::STATUS_NOTIFIED )); $total_notified = $wpdb->get_var($q); if ($total_notified > 0) { self::debug('❌ Too many notified images (' . $total_notified . ')'); Admin_Display::error(Error::msg('too_many_notified')); $this->_finished_running(); return; } $q = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status IN (%d, %d)"; $q = $wpdb->prepare($q, array( self::STATUS_NEW, self::STATUS_RAW )); $total_new = $wpdb->get_var($q); // $allowance -= $total_new; // May need to get more images $list = array(); $more = $allowance - $total_new; if ($more > 0) { $q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.ID>%d AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d "; $q = $wpdb->prepare($q, array( $this->_summary['next_post_id'], $more )); $list = $wpdb->get_results($q); foreach ($list as $v) { if (!$v->post_id) { continue; } $this->_summary['next_post_id'] = $v->post_id; $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } $meta_value['file'] = wp_normalize_path($meta_value['file']); $basedir = $this->wp_upload_dir['basedir'] . '/'; if (strpos($meta_value['file'], $basedir) === 0) { $meta_value['file'] = substr($meta_value['file'], strlen($basedir)); } $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_append_img_queue($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']); } } self::save_summary(); $num_a = count($this->_img_in_queue); self::debug('Images found: ' . $num_a); $this->_filter_duplicated_src(); self::debug('Images after duplicated: ' . count($this->_img_in_queue)); $this->_filter_invalid_src(); self::debug('Images after invalid: ' . count($this->_img_in_queue)); // Check w/ legacy imgoptm table, bypass finished images $this->_filter_legacy_src(); $num_b = count($this->_img_in_queue); if ($num_b != $num_a) { self::debug('Images after filtered duplicated/invalid/legacy src: ' . $num_b); } // Save to DB $this->_save_raw(); } // Push to Cloud server $accepted_imgs = $this->_send_request($allowance); $this->_finished_running(); if (!$accepted_imgs) { return; } $placeholder1 = Admin_Display::print_plural($accepted_imgs[0], 'image'); $placeholder2 = Admin_Display::print_plural($accepted_imgs[1], 'image'); $msg = sprintf(__('Pushed %1$s to Cloud server, accepted %2$s.', 'litespeed-cache'), $placeholder1, $placeholder2); Admin_Display::success($msg); } /** * Set running to done / private function _finished_running() { $this->_summary['is_running'] = 0; self::save_summary(); } /* * Add a new img to queue which will be pushed to request * * @since 1.6 * @access private / private function _append_img_queue( $meta_value, $is_ori_file = false ) { if (empty($meta_value['file']) \|\| empty($meta_value['width']) \|\| empty($meta_value['height'])) { self::debug2('bypass image due to lack of file/w/h: pid ' . $this->tmp_pid, $meta_value); return; } $short_file_path = $meta_value['file']; if (!$is_ori_file) { $short_file_path = $this->tmp_path . $short_file_path; } // Check if src is gathered already or not if (in_array($this->tmp_pid . '.' . $short_file_path, $this->_existed_src_list)) { // Debug2::debug2( '[Img_Optm] bypass image due to gathered: pid ' . $this->tmp_pid . ' ' . $short_file_path ); return; } else { // Append handled images $this->_existed_src_list[] = $this->tmp_pid . '.' . $short_file_path; } // check file exists or not $_img_info = $this->__media->info($short_file_path, $this->tmp_pid); $extension = pathinfo($short_file_path, PATHINFO_EXTENSION); if (!$_img_info \|\| !in_array($extension, array( 'jpg', 'jpeg', 'png', 'gif' ))) { self::debug2('bypass image due to file not exist: pid ' . $this->tmp_pid . ' ' . $short_file_path); return; } // Check if optimized file exists or not $target_needed = false; if ($this->_format) { $target_file_path = $short_file_path . '.' . $this->_format; if (!$this->__media->info($target_file_path, $this->tmp_pid)) { $target_needed = true; } } if ($this->conf(self::O_IMG_OPTM_ORI)) { $target_file_path = substr($short_file_path, 0, -strlen($extension)) . 'bk.' . $extension; if (!$this->__media->info($target_file_path, $this->tmp_pid)) { $target_needed = true; } } if (!$target_needed) { self::debug2('bypass image due to optimized file exists: pid ' . $this->tmp_pid . ' ' . $short_file_path); return; } // Debug2::debug2( '[Img_Optm] adding image: pid ' . $this->tmp_pid ); $this->_img_in_queue[] = array( 'pid' => $this->tmp_pid, 'md5' => $_img_info['md5'], 'url' => $_img_info['url'], 'src' => $short_file_path, // not needed in LiteSpeed IAPI, just leave for local storage after post 'mime_type' => !empty($meta_value['mime-type']) ? $meta_value['mime-type'] : '', ); } /* * Save gathered image raw data * * @since 3.0 / private function _save_raw() { if (empty($this->_img_in_queue)) { return; } $data = array(); $pid_list = array(); foreach ($this->_img_in_queue as $k => $v) { $_img_info = $this->__media->info($v['src'], $v['pid']); // attachment doesn't exist, delete the record if (empty($_img_info['url']) \|\| empty($_img_info['md5'])) { unset($this->_img_in_queue[$k]); continue; } $pid_list[] = (int) $v['pid']; $data[] = $v['pid']; $data[] = self::STATUS_RAW; $data[] = $v['src']; } global $wpdb; $fields = 'post_id, optm_status, src'; $q = "INSERT INTO `$this->_table_img_optming` ( $fields ) VALUES "; // Add placeholder $q .= Utility::chunk_placeholder($data, $fields); // Store data $wpdb->query($wpdb->prepare($q, $data)); $count = count($this->_img_in_queue); self::debug('Added raw images [total] ' . $count); $this->_img_in_queue = array(); // Save thumbnail groups for future rescan index $this->_gen_thumbnail_set(); $pid_list = array_unique($pid_list); self::debug('pid list to append to postmeta', $pid_list); $pid_list = array_diff($pid_list, $this->_pids_set); $this->_pids_set = array_merge($this->_pids_set, $pid_list); $existed_meta = $wpdb->get_results("SELECT FROM `$wpdb->postmeta` WHERE post_id IN ('" . implode("','", $pid_list) . "') AND meta_key='" . self::DB_SET . "'"); $existed_pid = array(); if ($existed_meta) { foreach ($existed_meta as $v) { $existed_pid[] = $v->post_id; } self::debug('pid list to update postmeta', $existed_pid); $wpdb->query( $wpdb->prepare("UPDATE `$wpdb->postmeta` SET meta_value=%s WHERE post_id IN ('" . implode("','", $existed_pid) . "') AND meta_key=%s", array( $this->_thumbnail_set, self::DB_SET, )) ); } // Add new meta $new_pids = $existed_pid ? array_diff($pid_list, $existed_pid) : $pid_list; if ($new_pids) { self::debug('pid list to update postmeta', $new_pids); foreach ($new_pids as $v) { self::debug('New group set info [pid] ' . $v); $q = "INSERT INTO `$wpdb->postmeta` (post_id, meta_key, meta_value) VALUES (%d, %s, %s)"; $wpdb->query($wpdb->prepare($q, array( $v, self::DB_SET, $this->_thumbnail_set ))); } } } /** * Generate thumbnail sets of current image group * * @since 5.4 / private function _gen_thumbnail_set() { if ($this->_thumbnail_set) { return; } $set = array(); foreach (Media::cls()->get_image_sizes() as $size) { $curr_size = $size['width'] . 'x' . $size['height']; if (in_array($curr_size, $set)) { continue; } $set[] = $curr_size; } $this->_thumbnail_set = implode(PHP_EOL, $set); } /* * Filter duplicated src in work table and $this->_img_in_queue, then mark them as duplicated * * @since 2.0 * @access private / private function _filter_duplicated_src() { global $wpdb; $srcpath_list = array(); $list = $wpdb->get_results("SELECT src FROM `$this->_table_img_optming`"); foreach ($list as $v) { $srcpath_list[] = $v->src; } foreach ($this->_img_in_queue as $k => $v) { if (in_array($v['src'], $srcpath_list)) { unset($this->_img_in_queue[$k]); continue; } $srcpath_list[] = $v['src']; } } /* * Filter legacy finished ones * * @since 5.4 / private function _filter_legacy_src() { global $wpdb; if (!$this->__data->tb_exist('img_optm')) { return; } if (!$this->_img_in_queue) { return; } $finished_ids = array(); Utility::compatibility(); $post_ids = array_unique(array_column($this->_img_in_queue, 'pid')); $list = $wpdb->get_results("SELECT post_id FROM `$this->_table_img_optm` WHERE post_id in (" . implode(',', $post_ids) . ') GROUP BY post_id'); foreach ($list as $v) { $finished_ids[] = $v->post_id; } foreach ($this->_img_in_queue as $k => $v) { if (in_array($v['pid'], $finished_ids)) { self::debug('Legacy image optimized [pid] ' . $v['pid']); unset($this->_img_in_queue[$k]); continue; } } // Drop all existing legacy records $wpdb->query("DELETE FROM `$this->_table_img_optm` WHERE post_id in (" . implode(',', $post_ids) . ')'); } /* * Filter the invalid src before sending * * @since 3.0.8.3 * @access private / private function _filter_invalid_src() { $img_in_queue_invalid = array(); foreach ($this->_img_in_queue as $k => $v) { if ($v['src']) { $extension = pathinfo($v['src'], PATHINFO_EXTENSION); } if (!$v['src'] \|\| empty($extension) \|\| !in_array($extension, array( 'jpg', 'jpeg', 'png', 'gif' ))) { $img_in_queue_invalid[] = $v['id']; unset($this->_img_in_queue[$k]); continue; } } if (!$img_in_queue_invalid) { return; } $count = count($img_in_queue_invalid); $msg = sprintf(__('Cleared %1$s invalid images.', 'litespeed-cache'), $count); Admin_Display::success($msg); self::debug('Found invalid src [total] ' . $count); } /* * Push img request to Cloud server * * @since 1.6.7 * @access private / private function _send_request( $allowance ) { global $wpdb; $q = "SELECT id, src, post_id FROM `$this->_table_img_optming` WHERE optm_status=%d LIMIT %d"; $q = $wpdb->prepare($q, array( self::STATUS_RAW, $allowance )); $_img_in_queue = $wpdb->get_results($q); if (!$_img_in_queue) { return; } self::debug('Load img in queue [total] ' . count($_img_in_queue)); $list = array(); foreach ($_img_in_queue as $v) { $_img_info = $this->__media->info($v->src, $v->post_id); // If record is invalid, remove from img_optming table if (empty($_img_info['url']) \|\| empty($_img_info['md5'])) { $wpdb->query($wpdb->prepare("DELETE FROM `$this->_table_img_optming` WHERE id=%d", $v->id)); continue; } $img = array( 'id' => $v->id, 'url' => $_img_info['url'], 'md5' => $_img_info['md5'], ); // Build the needed image types for request as we now support soft reset counter if ($this->_format) { $target_file_path = $v->src . '.' . $this->_format; if ($this->__media->info($target_file_path, $v->post_id)) { $img['optm_' . $this->_format] = 0; } } if ($this->conf(self::O_IMG_OPTM_ORI)) { $extension = pathinfo($v->src, PATHINFO_EXTENSION); $target_file_path = substr($v->src, 0, -strlen($extension)) . 'bk.' . $extension; if ($this->__media->info($target_file_path, $v->post_id)) { $img['optm_ori'] = 0; } } $list[] = $img; } if (!$list) { $msg = __('No valid image found in the current request.', 'litespeed-cache'); Admin_Display::error($msg); return; } $data = array( 'action' => self::CLOUD_ACTION_NEW_REQ, 'list' => \json_encode($list), 'optm_ori' => $this->conf(self::O_IMG_OPTM_ORI) ? 1 : 0, 'optm_lossless' => $this->conf(self::O_IMG_OPTM_LOSSLESS) ? 1 : 0, 'keep_exif' => $this->conf(self::O_IMG_OPTM_EXIF) ? 1 : 0, ); if ($this->_format) { $data['optm_' . $this->_format] = 1; } // Push to Cloud server $json = Cloud::post(Cloud::SVC_IMG_OPTM, $data); if (!$json) { return; } // Check data format if (empty($json['ids'])) { self::debug('Failed to parse response data from Cloud server ', $json); $msg = __('No valid image found by Cloud server in the current request.', 'litespeed-cache'); Admin_Display::error($msg); return; } self::debug('Returned data from Cloud server count: ' . count($json['ids'])); $ids = implode(',', array_map('intval', $json['ids'])); // Update img table $q = "UPDATE `$this->_table_img_optming` SET optm_status = '" . self::STATUS_REQUESTED . "' WHERE id IN ( $ids )"; $wpdb->query($q); $this->_summary['last_requested'] = time(); self::save_summary(); return array( count($list), count($json['ids']) ); } /* * Cloud server notify Client img status changed * * @access public / public function notify_img() { // Interval validation to avoid hacking domain_key if (!empty($this->_summary['notify_ts_err']) && time() - $this->_summary['notify_ts_err'] < 3) { return Cloud::err('too_often'); } $post_data = \json_decode(file_get_contents('php://input'), true); if (is_null($post_data)) { $post_data = $_POST; } global $wpdb; $notified_data = $post_data['data']; if (empty($notified_data) \|\| !is_array($notified_data)) { self::debug('❌ notify exit: no notified data'); return Cloud::err('no notified data'); } if (empty($post_data['server']) \|\| (substr($post_data['server'], -11) !== '.quic.cloud' && substr($post_data['server'], -15) !== '.quicserver.com')) { self::debug('notify exit: no/wrong server'); return Cloud::err('no/wrong server'); } if (empty($post_data['status'])) { self::debug('notify missing status'); return Cloud::err('no status'); } $status = $post_data['status']; self::debug('notified status=' . $status); $last_log_pid = 0; if (empty($this->_summary['reduced'])) { $this->_summary['reduced'] = 0; } if ($status == self::STATUS_NOTIFIED) { // Notified data format: [ img_optm_id => [ id=>, src_size=>, ori=>, ori_md5=>, ori_reduced=>, webp=>, webp_md5=>, webp_reduced=> ] ] $q = "SELECT a., b.meta_id as b_meta_id, b.meta_value AS b_optm_info FROM `$this->_table_img_optming` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.post_id AND b.meta_key = %s WHERE a.id IN ( " . implode(',', array_fill(0, count($notified_data), '%d')) . ' )'; $list = $wpdb->get_results($wpdb->prepare($q, array_merge(array( self::DB_SIZE ), array_keys($notified_data)))); $ls_optm_size_row_exists_postids = array(); foreach ($list as $v) { $json = $notified_data[$v->id]; // self::debug('Notified data for [id] ' . $v->id, $json); $server = !empty($json['server']) ? $json['server'] : $post_data['server']; $server_info = array( 'server' => $server, ); // Save server side ID to send taken notification after pulled $server_info['id'] = $json['id']; if (!empty($json['file_id'])) { $server_info['file_id'] = $json['file_id']; } // Optm info array $postmeta_info = array( 'ori_total' => 0, 'ori_saved' => 0, 'webp_total' => 0, 'webp_saved' => 0, 'avif_total' => 0, 'avif_saved' => 0, ); // Init postmeta_info for the first one if (!empty($v->b_meta_id)) { foreach (maybe_unserialize($v->b_optm_info) as $k2 => $v2) { $postmeta_info[$k2] += $v2; } } if (!empty($json['ori'])) { $server_info['ori_md5'] = $json['ori_md5']; $server_info['ori'] = $json['ori']; // Append meta info $postmeta_info['ori_total'] += $json['src_size']; $postmeta_info['ori_saved'] += $json['ori_reduced']; // optimized image size info in img_optm tb will be updated when pull $this->_summary['reduced'] += $json['ori_reduced']; } if (!empty($json['webp'])) { $server_info['webp_md5'] = $json['webp_md5']; $server_info['webp'] = $json['webp']; // Append meta info $postmeta_info['webp_total'] += $json['src_size']; $postmeta_info['webp_saved'] += $json['webp_reduced']; $this->_summary['reduced'] += $json['webp_reduced']; } if (!empty($json['avif'])) { $server_info['avif_md5'] = $json['avif_md5']; $server_info['avif'] = $json['avif']; // Append meta info $postmeta_info['avif_total'] += $json['src_size']; $postmeta_info['avif_saved'] += $json['avif_reduced']; $this->_summary['reduced'] += $json['avif_reduced']; } // Update status and data in working table $q = "UPDATE `$this->_table_img_optming` SET optm_status = %d, server_info = %s WHERE id = %d "; $wpdb->query($wpdb->prepare($q, array( $status, \json_encode($server_info), $v->id ))); // Update postmeta for optm summary $postmeta_info = serialize($postmeta_info); if (empty($v->b_meta_id) && !in_array($v->post_id, $ls_optm_size_row_exists_postids)) { self::debug('New size info [pid] ' . $v->post_id); $q = "INSERT INTO `$wpdb->postmeta` ( post_id, meta_key, meta_value ) VALUES ( %d, %s, %s )"; $wpdb->query($wpdb->prepare($q, array( $v->post_id, self::DB_SIZE, $postmeta_info ))); $ls_optm_size_row_exists_postids[] = $v->post_id; } else { $q = "UPDATE `$wpdb->postmeta` SET meta_value = %s WHERE meta_id = %d "; $wpdb->query($wpdb->prepare($q, array( $postmeta_info, $v->b_meta_id ))); } // write log $pid_log = $last_log_pid == $v->post_id ? '.' : $v->post_id; self::debug('notify_img [status] ' . $status . " \t\t[pid] " . $pid_log . " \t\t[id] " . $v->id); $last_log_pid = $v->post_id; } self::save_summary(); // Mark need_pull tag for cron self::update_option(self::DB_NEED_PULL, self::STATUS_NOTIFIED); } else { // Other errors will directly remove the working records // Delete from working table $q = "DELETE FROM `$this->_table_img_optming` WHERE id IN ( " . implode(',', array_fill(0, count($notified_data), '%d')) . ' ) '; $wpdb->query($wpdb->prepare($q, $notified_data)); } return Cloud::ok(array( 'count' => count($notified_data) )); } /** * Cron start async req * * @since 5.5 / public static function start_async_cron() { Task::async_call('imgoptm'); } /* * Manually start async req * * @since 5.5 / public static function start_async() { Task::async_call('imgoptm_force'); $msg = __('Started async image optimization request', 'litespeed-cache'); Admin_Display::success($msg); } /* * Check if need to pull or not * * @since 7.2 / public static function need_pull() { $tag = self::get_option(self::DB_NEED_PULL); if (!$tag \|\| $tag != self::STATUS_NOTIFIED) { return false; } return true; } /* * Ajax req handler * * @since 5.5 / public static function async_handler( $force = false ) { self::debug('------------async-------------start_async_handler'); if (!self::need_pull()) { self::debug('❌ no need pull'); return; } if (defined('LITESPEED_IMG_OPTM_PULL_CRON') && !LITESPEED_IMG_OPTM_PULL_CRON) { self::debug('Cron disabled [define] LITESPEED_IMG_OPTM_PULL_CRON'); return; } self::cls()->pull($force); } /* * Calculate pull threads * * @since 5.8 * @access private / private function _calc_pull_threads() { global $wpdb; if (defined('LITESPEED_IMG_OPTM_PULL_THREADS')) { return LITESPEED_IMG_OPTM_PULL_THREADS; } // Tune number of images per request based on number of images waiting and cloud packages $imgs_per_req = 1; // base 1, ramp up to ~50 max // Ramp up the request rate based on how many images are waiting $c = "SELECT count(id) FROM `$this->_table_img_optming` WHERE optm_status = %d"; $_c = $wpdb->prepare($c, array( self::STATUS_NOTIFIED )); $images_waiting = $wpdb->get_var($_c); if ($images_waiting && $images_waiting > 0) { $imgs_per_req = ceil($images_waiting / 1000); // ie. download 5/request if 5000 images are waiting } // Cap the request rate at 50 images per request $imgs_per_req = min(50, $imgs_per_req); self::debug('Pulling images at rate: ' . $imgs_per_req . ' Images per request.'); return $imgs_per_req; } /* * Pull optimized img * * @since 1.6 * @access public / public function pull( $manual = false ) { global $wpdb; $timeoutLimit = ini_get('max_execution_time'); $endts = time() + $timeoutLimit; self::debug('' . ($manual ? 'Manually' : 'Cron') . ' pull started [timeout: ' . $timeoutLimit . 's]'); if ($this->cron_running()) { self::debug('Pull cron is running'); $msg = __('Pull Cron is running', 'litespeed-cache'); Admin_Display::note($msg); return; } $this->_summary['last_pulled'] = time(); $this->_summary['last_pulled_by_cron'] = !$manual; self::save_summary(); $imgs_per_req = $this->_calc_pull_threads(); $q = "SELECT FROM `$this->_table_img_optming` WHERE optm_status = %d ORDER BY id LIMIT %d"; $_q = $wpdb->prepare($q, array( self::STATUS_NOTIFIED, $imgs_per_req )); $rm_ori_bkup = $this->conf(self::O_IMG_OPTM_RM_BKUP); $total_pulled_ori = 0; $total_pulled_webp = 0; $total_pulled_avif = 0; $server_list = array(); try { while ($img_rows = $wpdb->get_results($_q)) { self::debug('timeout left: ' . ($endts - time()) . 's'); if (function_exists('set_time_limit')) { $endts += 600; self::debug('Endtime extended to ' . date('Ymd H:i:s', $endts)); set_time_limit(600); // This will be no more important as we use noabort now } // Disabled as we use noabort // if ($endts - time() < 10) { // self::debug("🚨 End loop due to timeout limit reached " . $timeoutLimit . "s"); // break; // } /** * Update cron timestamp to avoid duplicated running * * @since 1.6.2 / $this->_update_cron_running(); // Run requests in parallel $requests = array(); // store each request URL for Requests::request_multiple() $imgs_by_req = array(); // store original request data so that we can reference it in the response $req_counter = 0; foreach ($img_rows as $row_img) { // request original image $server_info = \json_decode($row_img->server_info, true); if (!empty($server_info['ori'])) { $image_url = $server_info['server'] . '/' . $server_info['ori']; self::debug('Queueing pull: ' . $image_url); $requests[$req_counter] = array( 'url' => $image_url, 'type' => 'GET', ); $imgs_by_req[$req_counter++] = array( 'type' => 'ori', 'data' => $row_img, ); } // request webp image $webp_size = 0; if (!empty($server_info['webp'])) { $image_url = $server_info['server'] . '/' . $server_info['webp']; self::debug('Queueing pull WebP: ' . $image_url); $requests[$req_counter] = array( 'url' => $image_url, 'type' => 'GET', ); $imgs_by_req[$req_counter++] = array( 'type' => 'webp', 'data' => $row_img, ); } // request avif image $avif_size = 0; if (!empty($server_info['avif'])) { $image_url = $server_info['server'] . '/' . $server_info['avif']; self::debug('Queueing pull AVIF: ' . $image_url); $requests[$req_counter] = array( 'url' => $image_url, 'type' => 'GET', ); $imgs_by_req[$req_counter++] = array( 'type' => 'avif', 'data' => $row_img, ); } } self::debug('Loaded images count: ' . $req_counter); $complete_action = function ( $response, $req_count ) use ( $imgs_by_req, $rm_ori_bkup, &$total_pulled_ori, &$total_pulled_webp, &$total_pulled_avif, &$server_list ) { global $wpdb; $row_data = isset($imgs_by_req[$req_count]) ? $imgs_by_req[$req_count] : false; if (false === $row_data) { self::debug('❌ failed to pull image: Request not found in lookup variable.'); return; } $row_type = isset($row_data['type']) ? $row_data['type'] : 'ori'; $row_img = $row_data['data']; $local_file = $this->wp_upload_dir['basedir'] . '/' . $row_img->src; $server_info = \json_decode($row_img->server_info, true); if (empty($response->success)) { if (!empty($response->status_code) && 404 == $response->status_code) { $this->_step_back_image($row_img->id); $msg = __('Some optimized image file(s) has expired and was cleared.', 'litespeed-cache'); Admin_Display::error($msg); return; } else { // handle error $image_url = $server_info['server'] . '/' . $server_info[$row_type]; self::debug( '❌ failed to pull image (' . $row_type . '): ' . (!empty($response->status_code) ? $response->status_code : '') . ' [Local: ' . $row_img->src . '] / [remote: ' . $image_url . ']' ); throw new \Exception('Failed to pull image ' . (!empty($response->status_code) ? $response->status_code : '') . ' [url] ' . $image_url); return; } } // Handle wp_remote_get 404 as its success=true if (!empty($response->status_code)) { if ($response->status_code == 404) { $this->_step_back_image($row_img->id); $msg = __('Some optimized image file(s) has expired and was cleared.', 'litespeed-cache'); Admin_Display::error($msg); return; } // Note: if there is other error status code found in future, handle here } if ('webp' === $row_type) { file_put_contents($local_file . '.webp', $response->body); if (!file_exists($local_file . '.webp') \|\| !filesize($local_file . '.webp') \|\| md5_file($local_file . '.webp') !== $server_info['webp_md5']) { self::debug('❌ Failed to pull optimized webp img: file md5 mismatch, server md5: ' . $server_info['webp_md5']); // Delete working table $q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d "; $wpdb->query($wpdb->prepare($q, $row_img->id)); $msg = __('Pulled WebP image md5 does not match the notified WebP image md5.', 'litespeed-cache'); Admin_Display::error($msg); return; } self::debug('Pulled optimized img WebP: ' . $local_file . '.webp'); $webp_size = filesize($local_file . '.webp'); /* * API for WebP * * @since 2.9.5 * @since 3.0 $row_img less elements (see above one) * @see #751737 - API docs for WEBP generation / do_action('litespeed_img_pull_webp', $row_img, $local_file . '.webp'); ++$total_pulled_webp; } elseif ('avif' === $row_type) { file_put_contents($local_file . '.avif', $response->body); if (!file_exists($local_file . '.avif') \|\| !filesize($local_file . '.avif') \|\| md5_file($local_file . '.avif') !== $server_info['avif_md5']) { self::debug('❌ Failed to pull optimized avif img: file md5 mismatch, server md5: ' . $server_info['avif_md5']); // Delete working table $q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d "; $wpdb->query($wpdb->prepare($q, $row_img->id)); $msg = __('Pulled AVIF image md5 does not match the notified AVIF image md5.', 'litespeed-cache'); Admin_Display::error($msg); return; } self::debug('Pulled optimized img AVIF: ' . $local_file . '.avif'); $avif_size = filesize($local_file . '.avif'); /* * API for AVIF * * @since 7.0 / do_action('litespeed_img_pull_avif', $row_img, $local_file . '.avif'); ++$total_pulled_avif; } else { // "ori" image type file_put_contents($local_file . '.tmp', $response->body); if (!file_exists($local_file . '.tmp') \|\| !filesize($local_file . '.tmp') \|\| md5_file($local_file . '.tmp') !== $server_info['ori_md5']) { self::debug( '❌ Failed to pull optimized img: file md5 mismatch [url] ' . $server_info['server'] . '/' . $server_info['ori'] . ' [server_md5] ' . $server_info['ori_md5'] ); // Delete working table $q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d "; $wpdb->query($wpdb->prepare($q, $row_img->id)); $msg = __('One or more pulled images does not match with the notified image md5', 'litespeed-cache'); Admin_Display::error($msg); return; } // Backup ori img if (!$rm_ori_bkup) { $extension = pathinfo($local_file, PATHINFO_EXTENSION); $bk_file = substr($local_file, 0, -strlen($extension)) . 'bk.' . $extension; file_exists($local_file) && rename($local_file, $bk_file); } // Replace ori img rename($local_file . '.tmp', $local_file); self::debug('Pulled optimized img: ' . $local_file); /* * API Hook * * @since 2.9.5 * @since 3.0 $row_img has less elements now. Most useful ones are `post_id`/`src` / do_action('litespeed_img_pull_ori', $row_img, $local_file); self::debug2('Remove _table_img_optming record [id] ' . $row_img->id); } // Delete working table $q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d "; $wpdb->query($wpdb->prepare($q, $row_img->id)); // Save server_list to notify taken if (empty($server_list[$server_info['server']])) { $server_list[$server_info['server']] = array(); } $server_info_id = !empty($server_info['file_id']) ? $server_info['file_id'] : $server_info['id']; $server_list[$server_info['server']][] = $server_info_id; ++$total_pulled_ori; }; $force_wp_remote_get = defined('LITESPEED_FORCE_WP_REMOTE_GET') && LITESPEED_FORCE_WP_REMOTE_GET; if (!$force_wp_remote_get && class_exists('\WpOrg\Requests\Requests') && class_exists('\WpOrg\Requests\Autoload') && version_compare(PHP_VERSION, '5.6.0', '>=')) { // Make sure Requests can load internal classes. Autoload::register(); // Run pull requests in parallel Requests::request_multiple($requests, array( 'timeout' => 60, 'connect_timeout' => 60, 'complete' => $complete_action, )); } else { foreach ($requests as $cnt => $req) { $wp_response = wp_safe_remote_get($req['url'], array( 'timeout' => 60 )); $request_response = array( 'success' => false, 'status_code' => 0, 'body' => null, ); if (is_wp_error($wp_response)) { $error_message = $wp_response->get_error_message(); self::debug('❌ failed to pull image: ' . $error_message); } else { $request_response['success'] = true; $request_response['status_code'] = $wp_response['response']['code']; $request_response['body'] = $wp_response['body']; } self::debug('response code [code] ' . $wp_response['response']['code'] . ' [url] ' . $req['url']); $request_response = (object) $request_response; $complete_action($request_response, $cnt); } } self::debug('Current batch pull finished'); } } catch (\Exception $e) { Admin_Display::error('Image pull process failure: ' . $e->getMessage()); } // Notify IAPI images taken foreach ($server_list as $server => $img_list) { $data = array( 'action' => self::CLOUD_ACTION_TAKEN, 'list' => $img_list, 'server' => $server, ); // TODO: improve this so we do not call once per server, but just once and then filter on the server side Cloud::post(Cloud::SVC_IMG_OPTM, $data); } if (empty($this->_summary['img_taken'])) { $this->_summary['img_taken'] = 0; } $this->_summary['img_taken'] += $total_pulled_ori + $total_pulled_webp + $total_pulled_avif; self::save_summary(); // Manually running needs to roll back timestamp for next running if ($manual) { $this->_update_cron_running(true); } // $msg = sprintf(__('Pulled %d image(s)', 'litespeed-cache'), $total_pulled_ori + $total_pulled_webp); // Admin_Display::success($msg); // Check if there is still task in queue $q = "SELECT FROM `$this->_table_img_optming` WHERE optm_status = %d LIMIT 1"; $to_be_continued = $wpdb->get_row($wpdb->prepare($q, self::STATUS_NOTIFIED)); if ($to_be_continued) { self::debug('Task in queue, to be continued...'); return; // return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_PULL); } // If all pulled, update tag to done self::debug('Marked pull status to all pulled'); self::update_option(self::DB_NEED_PULL, self::STATUS_PULLED); } /** * Push image back to previous status * * @since 3.0 * @access private / private function _step_back_image( $id ) { global $wpdb; self::debug('Push image back to new status [id] ' . $id); // Reset the image to gathered status $q = "UPDATE `$this->_table_img_optming` SET optm_status = %d WHERE id = %d "; $wpdb->query($wpdb->prepare($q, array( self::STATUS_RAW, $id ))); } /* * Parse wp's meta value * * @since 1.6.7 * @access private / private function _parse_wp_meta_value( $v ) { if (empty($v)) { self::debug('bypassed parsing meta due to null value'); return false; } if (!$v->meta_value) { self::debug('bypassed parsing meta due to no meta_value: pid ' . $v->post_id); return false; } $meta_value = @maybe_unserialize($v->meta_value); if (!is_array($meta_value)) { self::debug('bypassed parsing meta due to meta_value not json: pid ' . $v->post_id); return false; } if (empty($meta_value['file'])) { self::debug('bypassed parsing meta due to no ori file: pid ' . $v->post_id); return false; } return $meta_value; } /* * Clean up all unfinished queue locally and to Cloud server * * @since 2.1.2 * @access public / public function clean() { global $wpdb; // Reset img_optm table's queue if ($this->__data->tb_exist('img_optming')) { // Get min post id to mark $q = "SELECT MIN(post_id) FROM `$this->_table_img_optming`"; $min_pid = $wpdb->get_var($q) - 1; if ($this->_summary['next_post_id'] > $min_pid) { $this->_summary['next_post_id'] = $min_pid; self::save_summary(); } $q = "DELETE FROM `$this->_table_img_optming`"; $wpdb->query($q); } $msg = __('Cleaned up unfinished data successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /* * Reset image counter * * @since 7.0 * @access private / private function _reset_counter() { self::debug('reset image optm counter'); $this->_summary['next_post_id'] = 0; self::save_summary(); $this->clean(); $msg = __('Reset image optimization counter successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /* * Destroy all optimized images * * @since 3.0 * @access private / private function _destroy() { global $wpdb; self::debug('executing DESTROY process'); $offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0; /* * Limit images each time before redirection to fix Out of memory issue. #665465 * * @since 2.9.8 / // Start deleting files $limit = apply_filters('litespeed_imgoptm_destroy_max_rows', 500); $img_q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d,%d "; $q = $wpdb->prepare($img_q, array( $offset $limit, $limit )); $list = $wpdb->get_results($q); $i = 0; foreach ($list as $v) { if (!$v->post_id) { continue; } $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } ++$i; $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_destroy_optm_file($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_destroy_optm_file' ), $meta_value['sizes']); } } self::debug('batch switched images total: ' . $i); ++$offset; $to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 ))); if ($to_be_continued) { // Check if post_id is beyond next_post_id self::debug('[next_post_id] ' . $this->_summary['next_post_id'] . ' [cursor post id] ' . $to_be_continued->post_id); if ($to_be_continued->post_id <= $this->_summary['next_post_id']) { self::debug('redirecting to next'); return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_DESTROY); } self::debug('🎊 Finished destroying'); } // Delete postmeta info $q = "DELETE FROM `$wpdb->postmeta` WHERE meta_key = %s"; $wpdb->query($wpdb->prepare($q, self::DB_SIZE)); $wpdb->query($wpdb->prepare($q, self::DB_SET)); // Delete img_optm table $this->__data->tb_del('img_optm'); $this->__data->tb_del('img_optming'); // Clear options table summary info self::delete_option('_summary'); self::delete_option(self::DB_NEED_PULL); $msg = __('Destroy all optimization data successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /** * Destroy optm file / private function _destroy_optm_file( $meta_value, $is_ori_file = false ) { $short_file_path = $meta_value['file']; if (!$is_ori_file) { $short_file_path = $this->tmp_path . $short_file_path; } self::debug('deleting ' . $short_file_path); // del webp $this->__media->info($short_file_path . '.webp', $this->tmp_pid) && $this->__media->del($short_file_path . '.webp', $this->tmp_pid); $this->__media->info($short_file_path . '.optm.webp', $this->tmp_pid) && $this->__media->del($short_file_path . '.optm.webp', $this->tmp_pid); // del avif $this->__media->info($short_file_path . '.avif', $this->tmp_pid) && $this->__media->del($short_file_path . '.avif', $this->tmp_pid); $this->__media->info($short_file_path . '.optm.avif', $this->tmp_pid) && $this->__media->del($short_file_path . '.optm.avif', $this->tmp_pid); $extension = pathinfo($short_file_path, PATHINFO_EXTENSION); $local_filename = substr($short_file_path, 0, -strlen($extension) - 1); $bk_file = $local_filename . '.bk.' . $extension; $bk_optm_file = $local_filename . '.bk.optm.' . $extension; // del optimized ori if ($this->__media->info($bk_file, $this->tmp_pid)) { self::debug('deleting optim ori'); $this->__media->del($short_file_path, $this->tmp_pid); $this->__media->rename($bk_file, $short_file_path, $this->tmp_pid); } $this->__media->info($bk_optm_file, $this->tmp_pid) && $this->__media->del($bk_optm_file, $this->tmp_pid); } /* * Rescan to find new generated images * * @since 1.6.7 * @access private / private function _rescan() { global $wpdb; exit('tobedone'); $offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0; $limit = 500; self::debug('rescan images'); // Get images $q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a, `$wpdb->postmeta` b WHERE a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') AND a.ID = b.post_id AND b.meta_key = '_wp_attachment_metadata' ORDER BY a.ID LIMIT %d, %d "; $list = $wpdb->get_results($wpdb->prepare($q, $offset $limit, $limit + 1)); // last one is the seed for next batch if (!$list) { $msg = __('Rescanned successfully.', 'litespeed-cache'); Admin_Display::success($msg); self::debug('rescan bypass: no gathered image found'); return; } if (count($list) == $limit + 1) { $to_be_continued = true; array_pop($list); // last one is the seed for next round, discard here. } else { $to_be_continued = false; } // Prepare post_ids to inquery gathered images $pid_set = array(); $scanned_list = array(); foreach ($list as $v) { $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } $scanned_list[] = array( 'pid' => $v->post_id, 'meta' => $meta_value, ); $pid_set[] = $v->post_id; } // Build gathered images $q = "SELECT src, post_id FROM `$this->_table_img_optm` WHERE post_id IN (" . implode(',', array_fill(0, count($pid_set), '%d')) . ')'; $list = $wpdb->get_results($wpdb->prepare($q, $pid_set)); foreach ($list as $v) { $this->_existed_src_list[] = $v->post_id . '.' . $v->src; } // Find new images foreach ($scanned_list as $v) { $meta_value = $v['meta']; // Parse all child src and put them into $this->_img_in_queue, missing ones to $this->_img_in_queue_missed $this->tmp_pid = $v['pid']; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_append_img_queue($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']); } } self::debug('rescanned [img] ' . count($this->_img_in_queue)); $count = count($this->_img_in_queue); if ($count > 0) { // Save to DB $this->_save_raw(); } if ($to_be_continued) { return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_RESCAN); } $msg = $count ? sprintf(__('Rescanned %d images successfully.', 'litespeed-cache'), $count) : __('Rescanned successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /** * Calculate bkup original images storage * * @since 2.2.6 * @access private / private function _calc_bkup() { global $wpdb; $offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0; $limit = 500; if (!$offset) { $this->_summary['bk_summary'] = array( 'date' => time(), 'count' => 0, 'sum' => 0, ); } $img_q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d,%d "; $q = $wpdb->prepare($img_q, array( $offset $limit, $limit )); $list = $wpdb->get_results($q); foreach ($list as $v) { if (!$v->post_id) { continue; } $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_get_bk_size($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_get_bk_size' ), $meta_value['sizes']); } } $this->_summary['bk_summary']['date'] = time(); self::save_summary(); self::debug('_calc_bkup total: ' . $this->_summary['bk_summary']['count'] . ' [size] ' . $this->_summary['bk_summary']['sum']); ++$offset; $to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 ))); if ($to_be_continued) { return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_CALC_BKUP); } $msg = __('Calculated backups successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /** * Calculate single size / private function _get_bk_size( $meta_value, $is_ori_file = false ) { $short_file_path = $meta_value['file']; if (!$is_ori_file) { $short_file_path = $this->tmp_path . $short_file_path; } $extension = pathinfo($short_file_path, PATHINFO_EXTENSION); $local_filename = substr($short_file_path, 0, -strlen($extension) - 1); $bk_file = $local_filename . '.bk.' . $extension; $img_info = $this->__media->info($bk_file, $this->tmp_pid); if (!$img_info) { return; } ++$this->_summary['bk_summary']['count']; $this->_summary['bk_summary']['sum'] += $img_info['size']; } /* * Delete bkup original images storage * * @since 2.5 * @access public / public function rm_bkup() { global $wpdb; if (!$this->__data->tb_exist('img_optming')) { return; } $offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0; $limit = 500; if (empty($this->_summary['rmbk_summary'])) { $this->_summary['rmbk_summary'] = array( 'date' => time(), 'count' => 0, 'sum' => 0, ); } $img_q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d,%d "; $q = $wpdb->prepare($img_q, array( $offset $limit, $limit )); $list = $wpdb->get_results($q); foreach ($list as $v) { if (!$v->post_id) { continue; } $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_del_bk_file($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_del_bk_file' ), $meta_value['sizes']); } } $this->_summary['rmbk_summary']['date'] = time(); self::save_summary(); self::debug('rm_bkup total: ' . $this->_summary['rmbk_summary']['count'] . ' [size] ' . $this->_summary['rmbk_summary']['sum']); ++$offset; $to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 ))); if ($to_be_continued) { return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_RM_BKUP); } $msg = __('Removed backups successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /** * Delete single file / private function _del_bk_file( $meta_value, $is_ori_file = false ) { $short_file_path = $meta_value['file']; if (!$is_ori_file) { $short_file_path = $this->tmp_path . $short_file_path; } $extension = pathinfo($short_file_path, PATHINFO_EXTENSION); $local_filename = substr($short_file_path, 0, -strlen($extension) - 1); $bk_file = $local_filename . '.bk.' . $extension; $img_info = $this->__media->info($bk_file, $this->tmp_pid); if (!$img_info) { return; } ++$this->_summary['rmbk_summary']['count']; $this->_summary['rmbk_summary']['sum'] += $img_info['size']; $this->__media->del($bk_file, $this->tmp_pid); } /* * Count images * * @since 1.6 * @access public / public function img_count() { global $wpdb; $q = "SELECT count() FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') "; $groups_all = $wpdb->get_var($q); $groups_new = $wpdb->get_var($q . ' AND ID>' . (int) $this->_summary['next_post_id'] . ' ORDER BY ID'); $groups_done = $wpdb->get_var($q . ' AND ID<=' . (int) $this->_summary['next_post_id'] . ' ORDER BY ID'); $q = "SELECT b.post_id FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID DESC LIMIT 1 "; $max_id = $wpdb->get_var($q); $count_list = array( 'max_id' => $max_id, 'groups_all' => $groups_all, 'groups_new' => $groups_new, 'groups_done' => $groups_done, ); // images count from work table if ($this->__data->tb_exist('img_optming')) { $q = "SELECT COUNT(DISTINCT post_id),COUNT() FROM `$this->_table_img_optming` WHERE optm_status = %d"; $groups_to_check = array( self::STATUS_RAW, self::STATUS_REQUESTED, self::STATUS_NOTIFIED, self::STATUS_ERR_FETCH ); foreach ($groups_to_check as $v) { $count_list['img.' . $v] = $count_list['group.' . $v] = 0; list($count_list['group.' . $v], $count_list['img.' . $v]) = $wpdb->get_row($wpdb->prepare($q, $v), ARRAY_N); } } return $count_list; } /* * Check if fetch cron is running * * @since 1.6.2 * @access public / public function cron_running( $bool_res = true ) { $last_run = !empty($this->_summary['last_pull']) ? $this->_summary['last_pull'] : 0; $is_running = $last_run && time() - $last_run < 120; if ($bool_res) { return $is_running; } return array( $last_run, $is_running ); } /* * Update fetch cron timestamp tag * * @since 1.6.2 * @access private / private function _update_cron_running( $done = false ) { $this->_summary['last_pull'] = time(); if ($done) { // Only update cron tag when its from the active running cron if ($this->_cron_ran) { // Rollback for next running $this->_summary['last_pull'] -= 120; } else { return; } } self::save_summary(); $this->_cron_ran = true; } /* * Batch switch images to ori/optm version * * @since 1.6.2 * @access public / public function batch_switch( $type ) { global $wpdb; if (defined('LITESPEED_CLI') \|\| wp_doing_cron()) { $offset = 0; while ($offset !== 'done') { Admin_Display::info("Starting switch to $type [offset] $offset"); $offset = $this->_batch_switch($type, $offset); } } else { $offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0; $newOffset = $this->_batch_switch($type, $offset); if ($newOffset !== 'done') { return Router::self_redirect(Router::ACTION_IMG_OPTM, $type); } } $msg = __('Switched images successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /* * Switch images per offset / private function _batch_switch( $type, $offset ) { global $wpdb; $limit = 500; $this->tmp_type = $type; $img_q = "SELECT b.post_id, b.meta_value FROM `$wpdb->posts` a LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID WHERE b.meta_key = '_wp_attachment_metadata' AND a.post_type = 'attachment' AND a.post_status = 'inherit' AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif') ORDER BY a.ID LIMIT %d,%d "; $q = $wpdb->prepare($img_q, array( $offset $limit, $limit )); $list = $wpdb->get_results($q); $i = 0; foreach ($list as $v) { if (!$v->post_id) { continue; } $meta_value = $this->_parse_wp_meta_value($v); if (!$meta_value) { continue; } ++$i; $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_switch_bk_file($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_switch_bk_file' ), $meta_value['sizes']); } } self::debug('batch switched images total: ' . $i . ' [type] ' . $type); ++$offset; $to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 ))); if ($to_be_continued) { return $offset; } return 'done'; } /** * Delete single file / private function _switch_bk_file( $meta_value, $is_ori_file = false ) { $short_file_path = $meta_value['file']; if (!$is_ori_file) { $short_file_path = $this->tmp_path . $short_file_path; } $extension = pathinfo($short_file_path, PATHINFO_EXTENSION); $local_filename = substr($short_file_path, 0, -strlen($extension) - 1); $bk_file = $local_filename . '.bk.' . $extension; $bk_optm_file = $local_filename . '.bk.optm.' . $extension; // self::debug('_switch_bk_file ' . $bk_file . ' [type] ' . $this->tmp_type); // switch to ori if ($this->tmp_type === self::TYPE_BATCH_SWITCH_ORI \|\| $this->tmp_type == 'orig') { // self::debug('switch to orig ' . $bk_file); if (!$this->__media->info($bk_file, $this->tmp_pid)) { return; } $this->__media->rename($local_filename . '.' . $extension, $bk_optm_file, $this->tmp_pid); $this->__media->rename($bk_file, $local_filename . '.' . $extension, $this->tmp_pid); } // switch to optm elseif ($this->tmp_type === self::TYPE_BATCH_SWITCH_OPTM \|\| $this->tmp_type == 'optm') { // self::debug('switch to optm ' . $bk_file); if (!$this->__media->info($bk_optm_file, $this->tmp_pid)) { return; } $this->__media->rename($local_filename . '.' . $extension, $bk_file, $this->tmp_pid); $this->__media->rename($bk_optm_file, $local_filename . '.' . $extension, $this->tmp_pid); } } /* * Switch image between original one and optimized one * * @since 1.6.2 * @access private / private function _switch_optm_file( $type ) { Admin_Display::success(__('Switched to optimized file successfully.', 'litespeed-cache')); return; global $wpdb; $pid = substr($type, 4); $switch_type = substr($type, 0, 4); $q = "SELECT src,post_id FROM `$this->_table_img_optm` WHERE post_id = %d AND optm_status = %d"; $list = $wpdb->get_results($wpdb->prepare($q, array( $pid, self::STATUS_PULLED ))); $msg = 'Unknown Msg'; foreach ($list as $v) { // to switch webp file if ($switch_type === 'webp') { if ($this->__media->info($v->src . '.webp', $v->post_id)) { $this->__media->rename($v->src . '.webp', $v->src . '.optm.webp', $v->post_id); self::debug('Disabled WebP: ' . $v->src); $msg = __('Disabled WebP file successfully.', 'litespeed-cache'); } elseif ($this->__media->info($v->src . '.optm.webp', $v->post_id)) { $this->__media->rename($v->src . '.optm.webp', $v->src . '.webp', $v->post_id); self::debug('Enable WebP: ' . $v->src); $msg = __('Enabled WebP file successfully.', 'litespeed-cache'); } } // to switch avif file elseif ($switch_type === 'avif') { if ($this->__media->info($v->src . '.avif', $v->post_id)) { $this->__media->rename($v->src . '.avif', $v->src . '.optm.avif', $v->post_id); self::debug('Disabled AVIF: ' . $v->src); $msg = __('Disabled AVIF file successfully.', 'litespeed-cache'); } elseif ($this->__media->info($v->src . '.optm.avif', $v->post_id)) { $this->__media->rename($v->src . '.optm.avif', $v->src . '.avif', $v->post_id); self::debug('Enable AVIF: ' . $v->src); $msg = __('Enabled AVIF file successfully.', 'litespeed-cache'); } } // to switch original file else { $extension = pathinfo($v->src, PATHINFO_EXTENSION); $local_filename = substr($v->src, 0, -strlen($extension) - 1); $bk_file = $local_filename . '.bk.' . $extension; $bk_optm_file = $local_filename . '.bk.optm.' . $extension; // revert ori back if ($this->__media->info($bk_file, $v->post_id)) { $this->__media->rename($v->src, $bk_optm_file, $v->post_id); $this->__media->rename($bk_file, $v->src, $v->post_id); self::debug('Restore original img: ' . $bk_file); $msg = __('Restored original file successfully.', 'litespeed-cache'); } elseif ($this->__media->info($bk_optm_file, $v->post_id)) { $this->__media->rename($v->src, $bk_file, $v->post_id); $this->__media->rename($bk_optm_file, $v->src, $v->post_id); self::debug('Switch to optm img: ' . $v->src); $msg = __('Switched to optimized file successfully.', 'litespeed-cache'); } } } Admin_Display::success($msg); } /* * Delete one optm data and recover original file * * @since 2.4.2 * @access public / public function reset_row( $post_id ) { global $wpdb; if (!$post_id) { return; } // Gathered image don't have DB_SIZE info yet // $size_meta = get_post_meta( $post_id, self::DB_SIZE, true ); // if ( ! $size_meta ) { // return; // } self::debug('_reset_row [pid] ' . $post_id); // TODO: Load image sub files $img_q = "SELECT b.post_id, b.meta_value FROM `$wpdb->postmeta` b WHERE b.post_id =%d AND b.meta_key = '_wp_attachment_metadata'"; $q = $wpdb->prepare($img_q, array( $post_id )); $v = $wpdb->get_row($q); $meta_value = $this->_parse_wp_meta_value($v); if ($meta_value) { $this->tmp_pid = $v->post_id; $this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/'; $this->_destroy_optm_file($meta_value, true); if (!empty($meta_value['sizes'])) { array_map(array( $this, '_destroy_optm_file' ), $meta_value['sizes']); } } delete_post_meta($post_id, self::DB_SIZE); delete_post_meta($post_id, self::DB_SET); $msg = __('Reset the optimized data successfully.', 'litespeed-cache'); Admin_Display::success($msg); } /* * Show an image's optm status * * @since 1.6.5 * @access public / public function check_img() { global $wpdb; $pid = $_POST['data']; self::debug('Check image [ID] ' . $pid); $data = array(); $data['img_count'] = $this->img_count(); $data['optm_summary'] = self::get_summary(); $data['_wp_attached_file'] = get_post_meta($pid, '_wp_attached_file', true); $data['_wp_attachment_metadata'] = get_post_meta($pid, '_wp_attachment_metadata', true); // Get img_optm data $q = "SELECT FROM `$this->_table_img_optm` WHERE post_id = %d"; $list = $wpdb->get_results($wpdb->prepare($q, $pid)); $img_data = array(); if ($list) { foreach ($list as $v) { $img_data[] = array( 'id' => $v->id, 'optm_status' => $v->optm_status, 'src' => $v->src, 'srcpath_md5' => $v->srcpath_md5, 'src_md5' => $v->src_md5, 'server_info' => $v->server_info, ); } } $data['img_data'] = $img_data; return array( '_res' => 'ok', 'data' => $data, ); } /** * Handle all request actions from main cls * * @since 2.0 * @access public */ public function handler() { $type = Router::verify_type(); switch ($type) { case self::TYPE_RESET_ROW: $this->reset_row(!empty($_GET['id']) ? $_GET['id'] : false); break; case self::TYPE_CALC_BKUP: $this->_calc_bkup(); break; case self::TYPE_RM_BKUP: $this->rm_bkup(); break; case self::TYPE_NEW_REQ: $this->new_req(); break; case self::TYPE_RESCAN: $this->_rescan(); break; case self::TYPE_RESET_COUNTER: $this->_reset_counter(); break; case self::TYPE_DESTROY: $this->_destroy(); break; case self::TYPE_CLEAN: $this->clean(); break; case self::TYPE_PULL: self::start_async(); break; case self::TYPE_BATCH_SWITCH_ORI: case self::TYPE_BATCH_SWITCH_OPTM: $this->batch_switch($type); break; case substr($type, 0, 4) === 'avif': case substr($type, 0, 4) === 'webp': case substr($type, 0, 4) === 'orig': $this->_switch_optm_file($type); break; default: break; } Admin::redirect(); } } Back

Edit File : img-optm.cls.php | Size : 65.27 KB

<?php

/**
 * The class to optimize image.
 *
 * @since       2.0
 * @package     LiteSpeed
 * @subpackage  LiteSpeed/src
 * @author      LiteSpeed Technologies <info@litespeedtech.com>
 */

namespace LiteSpeed;

use WpOrg\Requests\Autoload;
use WpOrg\Requests\Requests;

defined('WPINC') || exit();

class Img_Optm extends Base {

const LOG_TAG = '🗜️';

const CLOUD_ACTION_NEW_REQ         = 'new_req';
	const CLOUD_ACTION_TAKEN           = 'taken';
	const CLOUD_ACTION_REQUEST_DESTROY = 'imgoptm_destroy';
	const CLOUD_ACTION_CLEAN           = 'clean';

const TYPE_NEW_REQ           = 'new_req';
	const TYPE_RESCAN            = 'rescan';
	const TYPE_DESTROY           = 'destroy';
	const TYPE_RESET_COUNTER     = 'reset_counter';
	const TYPE_CLEAN             = 'clean';
	const TYPE_PULL              = 'pull';
	const TYPE_BATCH_SWITCH_ORI  = 'batch_switch_ori';
	const TYPE_BATCH_SWITCH_OPTM = 'batch_switch_optm';
	const TYPE_CALC_BKUP         = 'calc_bkup';
	const TYPE_RESET_ROW         = 'reset_row';
	const TYPE_RM_BKUP           = 'rm_bkup';

const STATUS_NEW        = 0; // 'new';
	const STATUS_RAW        = 1; // 'raw';
	const STATUS_REQUESTED  = 3; // 'requested';
	const STATUS_NOTIFIED   = 6; // 'notified';
	const STATUS_DUPLICATED = 8; // 'duplicated';
	const STATUS_PULLED     = 9; // 'pulled';
	const STATUS_FAILED     = -1; // 'failed';
	const STATUS_MISS       = -3; // 'miss';
	const STATUS_ERR_FETCH  = -5; // 'err_fetch';
	const STATUS_ERR_404    = -6; // 'err_404';
	const STATUS_ERR_OPTM   = -7; // 'err_optm';
	const STATUS_XMETA      = -8; // 'xmeta';
	const STATUS_ERR        = -9; // 'err';
	const DB_SIZE           = 'litespeed-optimize-size';
	const DB_SET            = 'litespeed-optimize-set';

const DB_NEED_PULL = 'need_pull';

private $wp_upload_dir;
	private $tmp_pid;
	private $tmp_type;
	private $tmp_path;
	private $_img_in_queue     = array();
	private $_existed_src_list = array();
	private $_pids_set         = array();
	private $_thumbnail_set    = '';
	private $_table_img_optm;
	private $_table_img_optming;
	private $_cron_ran = false;

private $__media;
	private $__data;
	protected $_summary;
	private $_format = '';

/**
	 * Init
	 *
	 * @since  2.0
	 */
	public function __construct() {
		Debug2::debug2('[ImgOptm] init');

$this->wp_upload_dir      = wp_upload_dir();
		$this->__media            = $this->cls('Media');
		$this->__data             = $this->cls('Data');
		$this->_table_img_optm    = $this->__data->tb('img_optm');
		$this->_table_img_optming = $this->__data->tb('img_optming');

$this->_summary = self::get_summary();
		if (empty($this->_summary['next_post_id'])) {
			$this->_summary['next_post_id'] = 0;
		}
		if ($this->conf(Base::O_IMG_OPTM_WEBP)) {
			$this->_format = 'webp';
			if ($this->conf(Base::O_IMG_OPTM_WEBP) == 2) {
				$this->_format = 'avif';
			}
		}
	}

/**
	 * Gather images auto when update attachment meta
	 * This is to optimize new uploaded images first. Stored in img_optm table.
	 * Later normal process will auto remove these records when trying to optimize these images again
	 *
	 * @since  4.0
	 */
	public function wp_update_attachment_metadata( $meta_value, $post_id ) {
		global $wpdb;

self::debug2('🖌️ Auto update attachment meta [id] ' . $post_id);
		if (empty($meta_value['file'])) {
			return;
		}

// Load gathered images
		if (!$this->_existed_src_list) {
			// To aavoid extra query when recalling this function
			self::debug('SELECT src from img_optm table');
			if ($this->__data->tb_exist('img_optm')) {
				$q    = "SELECT src FROM `$this->_table_img_optm` WHERE post_id = %d";
				$list = $wpdb->get_results($wpdb->prepare($q, $post_id));
				foreach ($list as $v) {
					$this->_existed_src_list[] = $post_id . '.' . $v->src;
				}
			}
			if ($this->__data->tb_exist('img_optming')) {
				$q    = "SELECT src FROM `$this->_table_img_optming` WHERE post_id = %d";
				$list = $wpdb->get_results($wpdb->prepare($q, $post_id));
				foreach ($list as $v) {
					$this->_existed_src_list[] = $post_id . '.' . $v->src;
				}
			} else {
				$this->__data->tb_create('img_optming');
			}
		}

// Prepare images
		$this->tmp_pid  = $post_id;
		$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
		$this->_append_img_queue($meta_value, true);
		if (!empty($meta_value['sizes'])) {
			array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']);
		}

if (!$this->_img_in_queue) {
			self::debug('auto update attachment meta 2 bypass: empty _img_in_queue');
			return;
		}

// Save to DB
		$this->_save_raw();

// $this->_send_request();
	}

/**
	 * Auto send optm request
	 *
	 * @since  2.4.1
	 * @access public
	 */
	public static function cron_auto_request() {
		if (!wp_doing_cron()) {
			return false;
		}

$instance = self::cls();
		$instance->new_req();
	}

/**
	 * Calculate wet run allowance
	 *
	 * @since 3.0
	 */
	public function wet_limit() {
		$wet_limit = 1;
		if (!empty($this->_summary['img_taken'])) {
			$wet_limit = pow($this->_summary['img_taken'], 2);
		}

if ($wet_limit == 1 && !empty($this->_summary['img_status.' . self::STATUS_ERR_OPTM])) {
			$wet_limit = pow($this->_summary['img_status.' . self::STATUS_ERR_OPTM], 2);
		}

if ($wet_limit < Cloud::IMG_OPTM_DEFAULT_GROUP) {
			return $wet_limit;
		}

// No limit
		return false;
	}

/**
	 * Push raw img to image optm server
	 *
	 * @since 1.6
	 * @access public
	 */
	public function new_req() {
		global $wpdb;

// check if is running
		if (!empty($this->_summary['is_running']) && time() - $this->_summary['is_running'] < apply_filters('litespeed_imgoptm_new_req_interval', 3600)) {
			self::debug('The previous req was in 3600s.');
			return;
		}
		$this->_summary['is_running'] = time();
		self::save_summary();

// Check if has credit to push
		$err       = false;
		$allowance = Cloud::cls()->allowance(Cloud::SVC_IMG_OPTM, $err);

$wet_limit = $this->wet_limit();

self::debug("allowance_max $allowance wet_limit $wet_limit");
		if ($wet_limit && $wet_limit < $allowance) {
			$allowance = $wet_limit;
		}

if (!$allowance) {
			self::debug('❌ No credit');
			Admin_Display::error(Error::msg($err));
			$this->_finished_running();
			return;
		}

self::debug('preparing images to push');

$this->__data->tb_create('img_optming');

$q               = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status = %d";
		$q               = $wpdb->prepare($q, array( self::STATUS_REQUESTED ));
		$total_requested = $wpdb->get_var($q);
		$max_requested   = $allowance * 1;

if ($total_requested > $max_requested) {
			self::debug('❌ Too many queued images (' . $total_requested . ' > ' . $max_requested . ')');
			Admin_Display::error(Error::msg('too_many_requested'));
			$this->_finished_running();
			return;
		}

$allowance -= $total_requested;

if ($allowance < 1) {
			self::debug('❌ Too many requested images ' . $total_requested);
			Admin_Display::error(Error::msg('too_many_requested'));
			$this->_finished_running();
			return;
		}

// Limit maximum number of items waiting to be pulled
		$q              = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status = %d";
		$q              = $wpdb->prepare($q, array( self::STATUS_NOTIFIED ));
		$total_notified = $wpdb->get_var($q);
		if ($total_notified > 0) {
			self::debug('❌ Too many notified images (' . $total_notified . ')');
			Admin_Display::error(Error::msg('too_many_notified'));
			$this->_finished_running();
			return;
		}

$q         = "SELECT COUNT(1) FROM `$this->_table_img_optming` WHERE optm_status IN (%d, %d)";
		$q         = $wpdb->prepare($q, array( self::STATUS_NEW, self::STATUS_RAW ));
		$total_new = $wpdb->get_var($q);
		// $allowance -= $total_new;

// May need to get more images
		$list = array();
		$more = $allowance - $total_new;
		if ($more > 0) {
			$q    = "SELECT b.post_id, b.meta_value
				FROM `$wpdb->posts` a
				LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
				WHERE b.meta_key = '_wp_attachment_metadata'
					AND a.post_type = 'attachment'
					AND a.post_status = 'inherit'
					AND a.ID>%d
					AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
				ORDER BY a.ID
				LIMIT %d
				";
			$q    = $wpdb->prepare($q, array( $this->_summary['next_post_id'], $more ));
			$list = $wpdb->get_results($q);
			foreach ($list as $v) {
				if (!$v->post_id) {
					continue;
				}

$this->_summary['next_post_id'] = $v->post_id;

$meta_value = $this->_parse_wp_meta_value($v);
				if (!$meta_value) {
					continue;
				}
				$meta_value['file'] = wp_normalize_path($meta_value['file']);
				$basedir            = $this->wp_upload_dir['basedir'] . '/';
				if (strpos($meta_value['file'], $basedir) === 0) {
					$meta_value['file'] = substr($meta_value['file'], strlen($basedir));
				}

$this->tmp_pid  = $v->post_id;
				$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
				$this->_append_img_queue($meta_value, true);
				if (!empty($meta_value['sizes'])) {
					array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']);
				}
			}

self::save_summary();

$num_a = count($this->_img_in_queue);
			self::debug('Images found: ' . $num_a);
			$this->_filter_duplicated_src();
			self::debug('Images after duplicated: ' . count($this->_img_in_queue));
			$this->_filter_invalid_src();
			self::debug('Images after invalid: ' . count($this->_img_in_queue));
			// Check w/ legacy imgoptm table, bypass finished images
			$this->_filter_legacy_src();

$num_b = count($this->_img_in_queue);
			if ($num_b != $num_a) {
				self::debug('Images after filtered duplicated/invalid/legacy src: ' . $num_b);
			}

// Save to DB
			$this->_save_raw();
		}

// Push to Cloud server
		$accepted_imgs = $this->_send_request($allowance);

$this->_finished_running();
		if (!$accepted_imgs) {
			return;
		}

$placeholder1 = Admin_Display::print_plural($accepted_imgs[0], 'image');
		$placeholder2 = Admin_Display::print_plural($accepted_imgs[1], 'image');
		$msg          = sprintf(__('Pushed %1$s to Cloud server, accepted %2$s.', 'litespeed-cache'), $placeholder1, $placeholder2);
		Admin_Display::success($msg);
	}

/**
	 * Set running to done
	 */
	private function _finished_running() {
		$this->_summary['is_running'] = 0;
		self::save_summary();
	}

/**
	 * Add a new img to queue which will be pushed to request
	 *
	 * @since 1.6
	 * @access private
	 */
	private function _append_img_queue( $meta_value, $is_ori_file = false ) {
		if (empty($meta_value['file']) || empty($meta_value['width']) || empty($meta_value['height'])) {
			self::debug2('bypass image due to lack of file/w/h: pid ' . $this->tmp_pid, $meta_value);
			return;
		}

$short_file_path = $meta_value['file'];

if (!$is_ori_file) {
			$short_file_path = $this->tmp_path . $short_file_path;
		}

// Check if src is gathered already or not
		if (in_array($this->tmp_pid . '.' . $short_file_path, $this->_existed_src_list)) {
			// Debug2::debug2( '[Img_Optm] bypass image due to gathered: pid ' . $this->tmp_pid . ' ' . $short_file_path );
			return;
		} else {
			// Append handled images
			$this->_existed_src_list[] = $this->tmp_pid . '.' . $short_file_path;
		}

// check file exists or not
		$_img_info = $this->__media->info($short_file_path, $this->tmp_pid);

$extension = pathinfo($short_file_path, PATHINFO_EXTENSION);
		if (!$_img_info || !in_array($extension, array( 'jpg', 'jpeg', 'png', 'gif' ))) {
			self::debug2('bypass image due to file not exist: pid ' . $this->tmp_pid . ' ' . $short_file_path);
			return;
		}

// Check if optimized file exists or not
		$target_needed = false;
		if ($this->_format) {
			$target_file_path = $short_file_path . '.' . $this->_format;
			if (!$this->__media->info($target_file_path, $this->tmp_pid)) {
				$target_needed = true;
			}
		}
		if ($this->conf(self::O_IMG_OPTM_ORI)) {
			$target_file_path = substr($short_file_path, 0, -strlen($extension)) . 'bk.' . $extension;
			if (!$this->__media->info($target_file_path, $this->tmp_pid)) {
				$target_needed = true;
			}
		}
		if (!$target_needed) {
			self::debug2('bypass image due to optimized file exists: pid ' . $this->tmp_pid . ' ' . $short_file_path);
			return;
		}

// Debug2::debug2( '[Img_Optm] adding image: pid ' . $this->tmp_pid );

$this->_img_in_queue[] = array(
			'pid' => $this->tmp_pid,
			'md5' => $_img_info['md5'],
			'url' => $_img_info['url'],
			'src' => $short_file_path, // not needed in LiteSpeed IAPI, just leave for local storage after post
			'mime_type' => !empty($meta_value['mime-type']) ? $meta_value['mime-type'] : '',
		);
	}

/**
	 * Save gathered image raw data
	 *
	 * @since  3.0
	 */
	private function _save_raw() {
		if (empty($this->_img_in_queue)) {
			return;
		}
		$data     = array();
		$pid_list = array();
		foreach ($this->_img_in_queue as $k => $v) {
			$_img_info = $this->__media->info($v['src'], $v['pid']);

// attachment doesn't exist, delete the record
			if (empty($_img_info['url']) || empty($_img_info['md5'])) {
				unset($this->_img_in_queue[$k]);
				continue;
			}
			$pid_list[] = (int) $v['pid'];

$data[] = $v['pid'];
			$data[] = self::STATUS_RAW;
			$data[] = $v['src'];
		}

global $wpdb;
		$fields = 'post_id, optm_status, src';
		$q      = "INSERT INTO `$this->_table_img_optming` ( $fields ) VALUES ";

// Add placeholder
		$q .= Utility::chunk_placeholder($data, $fields);

// Store data
		$wpdb->query($wpdb->prepare($q, $data));

$count = count($this->_img_in_queue);
		self::debug('Added raw images [total] ' . $count);

$this->_img_in_queue = array();

// Save thumbnail groups for future rescan index
		$this->_gen_thumbnail_set();

$pid_list = array_unique($pid_list);
		self::debug('pid list to append to postmeta', $pid_list);
		$pid_list        = array_diff($pid_list, $this->_pids_set);
		$this->_pids_set = array_merge($this->_pids_set, $pid_list);

$existed_meta = $wpdb->get_results("SELECT * FROM `$wpdb->postmeta` WHERE post_id IN ('" . implode("','", $pid_list) . "') AND meta_key='" . self::DB_SET . "'");
		$existed_pid  = array();
		if ($existed_meta) {
			foreach ($existed_meta as $v) {
				$existed_pid[] = $v->post_id;
			}
			self::debug('pid list to update postmeta', $existed_pid);
			$wpdb->query(
				$wpdb->prepare("UPDATE `$wpdb->postmeta` SET meta_value=%s WHERE post_id IN ('" . implode("','", $existed_pid) . "') AND meta_key=%s", array(
					$this->_thumbnail_set,
					self::DB_SET,
				))
			);
		}

// Add new meta
		$new_pids = $existed_pid ? array_diff($pid_list, $existed_pid) : $pid_list;
		if ($new_pids) {
			self::debug('pid list to update postmeta', $new_pids);
			foreach ($new_pids as $v) {
				self::debug('New group set info [pid] ' . $v);
				$q = "INSERT INTO `$wpdb->postmeta` (post_id, meta_key, meta_value) VALUES (%d, %s, %s)";
				$wpdb->query($wpdb->prepare($q, array( $v, self::DB_SET, $this->_thumbnail_set )));
			}
		}
	}

/**
	 * Generate thumbnail sets of current image group
	 *
	 * @since 5.4
	 */
	private function _gen_thumbnail_set() {
		if ($this->_thumbnail_set) {
			return;
		}
		$set = array();
		foreach (Media::cls()->get_image_sizes() as $size) {
			$curr_size = $size['width'] . 'x' . $size['height'];
			if (in_array($curr_size, $set)) {
				continue;
			}
			$set[] = $curr_size;
		}
		$this->_thumbnail_set = implode(PHP_EOL, $set);
	}

/**
	 * Filter duplicated src in work table and $this->_img_in_queue, then mark them as duplicated
	 *
	 * @since 2.0
	 * @access private
	 */
	private function _filter_duplicated_src() {
		global $wpdb;

$srcpath_list = array();

$list = $wpdb->get_results("SELECT src FROM `$this->_table_img_optming`");
		foreach ($list as $v) {
			$srcpath_list[] = $v->src;
		}

foreach ($this->_img_in_queue as $k => $v) {
			if (in_array($v['src'], $srcpath_list)) {
				unset($this->_img_in_queue[$k]);
				continue;
			}

$srcpath_list[] = $v['src'];
		}
	}

/**
	 * Filter legacy finished ones
	 *
	 * @since 5.4
	 */
	private function _filter_legacy_src() {
		global $wpdb;

if (!$this->__data->tb_exist('img_optm')) {
			return;
		}

if (!$this->_img_in_queue) {
			return;
		}

$finished_ids = array();

Utility::compatibility();
		$post_ids = array_unique(array_column($this->_img_in_queue, 'pid'));
		$list     = $wpdb->get_results("SELECT post_id FROM `$this->_table_img_optm` WHERE post_id in (" . implode(',', $post_ids) . ') GROUP BY post_id');
		foreach ($list as $v) {
			$finished_ids[] = $v->post_id;
		}

foreach ($this->_img_in_queue as $k => $v) {
			if (in_array($v['pid'], $finished_ids)) {
				self::debug('Legacy image optimized [pid] ' . $v['pid']);
				unset($this->_img_in_queue[$k]);
				continue;
			}
		}

// Drop all existing legacy records
		$wpdb->query("DELETE FROM `$this->_table_img_optm` WHERE post_id in (" . implode(',', $post_ids) . ')');
	}

/**
	 * Filter the invalid src before sending
	 *
	 * @since 3.0.8.3
	 * @access private
	 */
	private function _filter_invalid_src() {
		$img_in_queue_invalid = array();
		foreach ($this->_img_in_queue as $k => $v) {
			if ($v['src']) {
				$extension = pathinfo($v['src'], PATHINFO_EXTENSION);
			}
			if (!$v['src'] || empty($extension) || !in_array($extension, array( 'jpg', 'jpeg', 'png', 'gif' ))) {
				$img_in_queue_invalid[] = $v['id'];
				unset($this->_img_in_queue[$k]);
				continue;
			}
		}

if (!$img_in_queue_invalid) {
			return;
		}

$count = count($img_in_queue_invalid);
		$msg   = sprintf(__('Cleared %1$s invalid images.', 'litespeed-cache'), $count);
		Admin_Display::success($msg);

self::debug('Found invalid src [total] ' . $count);
	}

/**
	 * Push img request to Cloud server
	 *
	 * @since 1.6.7
	 * @access private
	 */
	private function _send_request( $allowance ) {
		global $wpdb;

$q             = "SELECT id, src, post_id FROM `$this->_table_img_optming` WHERE optm_status=%d LIMIT %d";
		$q             = $wpdb->prepare($q, array( self::STATUS_RAW, $allowance ));
		$_img_in_queue = $wpdb->get_results($q);
		if (!$_img_in_queue) {
			return;
		}

self::debug('Load img in queue [total] ' . count($_img_in_queue));

$list = array();
		foreach ($_img_in_queue as $v) {
			$_img_info = $this->__media->info($v->src, $v->post_id);
			// If record is invalid, remove from img_optming table
			if (empty($_img_info['url']) || empty($_img_info['md5'])) {
				$wpdb->query($wpdb->prepare("DELETE FROM `$this->_table_img_optming` WHERE id=%d", $v->id));
				continue;
			}

$img = array(
				'id' => $v->id,
				'url' => $_img_info['url'],
				'md5' => $_img_info['md5'],
			);
			// Build the needed image types for request as we now support soft reset counter
			if ($this->_format) {
				$target_file_path = $v->src . '.' . $this->_format;
				if ($this->__media->info($target_file_path, $v->post_id)) {
					$img['optm_' . $this->_format] = 0;
				}
			}
			if ($this->conf(self::O_IMG_OPTM_ORI)) {
				$extension        = pathinfo($v->src, PATHINFO_EXTENSION);
				$target_file_path = substr($v->src, 0, -strlen($extension)) . 'bk.' . $extension;
				if ($this->__media->info($target_file_path, $v->post_id)) {
					$img['optm_ori'] = 0;
				}
			}

$list[] = $img;
		}

if (!$list) {
			$msg = __('No valid image found in the current request.', 'litespeed-cache');
			Admin_Display::error($msg);
			return;
		}

$data = array(
			'action' => self::CLOUD_ACTION_NEW_REQ,
			'list' => \json_encode($list),
			'optm_ori' => $this->conf(self::O_IMG_OPTM_ORI) ? 1 : 0,
			'optm_lossless' => $this->conf(self::O_IMG_OPTM_LOSSLESS) ? 1 : 0,
			'keep_exif' => $this->conf(self::O_IMG_OPTM_EXIF) ? 1 : 0,
		);
		if ($this->_format) {
			$data['optm_' . $this->_format] = 1;
		}

// Push to Cloud server
		$json = Cloud::post(Cloud::SVC_IMG_OPTM, $data);
		if (!$json) {
			return;
		}

// Check data format
		if (empty($json['ids'])) {
			self::debug('Failed to parse response data from Cloud server ', $json);
			$msg = __('No valid image found by Cloud server in the current request.', 'litespeed-cache');
			Admin_Display::error($msg);
			return;
		}

self::debug('Returned data from Cloud server count: ' . count($json['ids']));

$ids = implode(',', array_map('intval', $json['ids']));
		// Update img table
		$q = "UPDATE `$this->_table_img_optming` SET optm_status = '" . self::STATUS_REQUESTED . "' WHERE id IN ( $ids )";
		$wpdb->query($q);

$this->_summary['last_requested'] = time();
		self::save_summary();

return array( count($list), count($json['ids']) );
	}

/**
	 * Cloud server notify Client img status changed
	 *
	 * @access public
	 */
	public function notify_img() {
		// Interval validation to avoid hacking domain_key
		if (!empty($this->_summary['notify_ts_err']) && time() - $this->_summary['notify_ts_err'] < 3) {
			return Cloud::err('too_often');
		}

$post_data = \json_decode(file_get_contents('php://input'), true);
		if (is_null($post_data)) {
			$post_data = $_POST;
		}

global $wpdb;

$notified_data = $post_data['data'];
		if (empty($notified_data) || !is_array($notified_data)) {
			self::debug('❌ notify exit: no notified data');
			return Cloud::err('no notified data');
		}

if (empty($post_data['server']) || (substr($post_data['server'], -11) !== '.quic.cloud' && substr($post_data['server'], -15) !== '.quicserver.com')) {
			self::debug('notify exit: no/wrong server');
			return Cloud::err('no/wrong server');
		}

if (empty($post_data['status'])) {
			self::debug('notify missing status');
			return Cloud::err('no status');
		}

$status = $post_data['status'];
		self::debug('notified status=' . $status);

$last_log_pid = 0;

if (empty($this->_summary['reduced'])) {
			$this->_summary['reduced'] = 0;
		}

if ($status == self::STATUS_NOTIFIED) {
			// Notified data format: [ img_optm_id => [ id=>, src_size=>, ori=>, ori_md5=>, ori_reduced=>, webp=>, webp_md5=>, webp_reduced=> ] ]
			$q                               =
				"SELECT a.*, b.meta_id as b_meta_id, b.meta_value AS b_optm_info
					FROM `$this->_table_img_optming` a
					LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.post_id AND b.meta_key = %s
					WHERE a.id IN ( " .
				implode(',', array_fill(0, count($notified_data), '%d')) .
				' )';
			$list                            = $wpdb->get_results($wpdb->prepare($q, array_merge(array( self::DB_SIZE ), array_keys($notified_data))));
			$ls_optm_size_row_exists_postids = array();
			foreach ($list as $v) {
				$json = $notified_data[$v->id];
				// self::debug('Notified data for [id] ' . $v->id, $json);

$server = !empty($json['server']) ? $json['server'] : $post_data['server'];

$server_info = array(
					'server' => $server,
				);

// Save server side ID to send taken notification after pulled
				$server_info['id'] = $json['id'];
				if (!empty($json['file_id'])) {
					$server_info['file_id'] = $json['file_id'];
				}

// Optm info array
				$postmeta_info = array(
					'ori_total' => 0,
					'ori_saved' => 0,
					'webp_total' => 0,
					'webp_saved' => 0,
					'avif_total' => 0,
					'avif_saved' => 0,
				);
				// Init postmeta_info for the first one
				if (!empty($v->b_meta_id)) {
					foreach (maybe_unserialize($v->b_optm_info) as $k2 => $v2) {
						$postmeta_info[$k2] += $v2;
					}
				}

if (!empty($json['ori'])) {
					$server_info['ori_md5'] = $json['ori_md5'];
					$server_info['ori']     = $json['ori'];

// Append meta info
					$postmeta_info['ori_total'] += $json['src_size'];
					$postmeta_info['ori_saved'] += $json['ori_reduced']; // optimized image size info in img_optm tb will be updated when pull

$this->_summary['reduced'] += $json['ori_reduced'];
				}

if (!empty($json['webp'])) {
					$server_info['webp_md5'] = $json['webp_md5'];
					$server_info['webp']     = $json['webp'];

// Append meta info
					$postmeta_info['webp_total'] += $json['src_size'];
					$postmeta_info['webp_saved'] += $json['webp_reduced'];

$this->_summary['reduced'] += $json['webp_reduced'];
				}

if (!empty($json['avif'])) {
					$server_info['avif_md5'] = $json['avif_md5'];
					$server_info['avif']     = $json['avif'];

// Append meta info
					$postmeta_info['avif_total'] += $json['src_size'];
					$postmeta_info['avif_saved'] += $json['avif_reduced'];

$this->_summary['reduced'] += $json['avif_reduced'];
				}

// Update status and data in working table
				$q = "UPDATE `$this->_table_img_optming` SET optm_status = %d, server_info = %s WHERE id = %d ";
				$wpdb->query($wpdb->prepare($q, array( $status, \json_encode($server_info), $v->id )));

// Update postmeta for optm summary
				$postmeta_info = serialize($postmeta_info);
				if (empty($v->b_meta_id) && !in_array($v->post_id, $ls_optm_size_row_exists_postids)) {
					self::debug('New size info [pid] ' . $v->post_id);
					$q = "INSERT INTO `$wpdb->postmeta` ( post_id, meta_key, meta_value ) VALUES ( %d, %s, %s )";
					$wpdb->query($wpdb->prepare($q, array( $v->post_id, self::DB_SIZE, $postmeta_info )));
					$ls_optm_size_row_exists_postids[] = $v->post_id;
				} else {
					$q = "UPDATE `$wpdb->postmeta` SET meta_value = %s WHERE meta_id = %d ";
					$wpdb->query($wpdb->prepare($q, array( $postmeta_info, $v->b_meta_id )));
				}

// write log
				$pid_log = $last_log_pid == $v->post_id ? '.' : $v->post_id;
				self::debug('notify_img [status] ' . $status . " \t\t[pid] " . $pid_log . " \t\t[id] " . $v->id);
				$last_log_pid = $v->post_id;
			}

self::save_summary();

// Mark need_pull tag for cron
			self::update_option(self::DB_NEED_PULL, self::STATUS_NOTIFIED);
		} else {
			// Other errors will directly remove the working records
			// Delete from working table
			$q = "DELETE FROM `$this->_table_img_optming` WHERE id IN ( " . implode(',', array_fill(0, count($notified_data), '%d')) . ' ) ';
			$wpdb->query($wpdb->prepare($q, $notified_data));
		}

return Cloud::ok(array( 'count' => count($notified_data) ));
	}

/**
	 * Cron start async req
	 *
	 * @since 5.5
	 */
	public static function start_async_cron() {
		Task::async_call('imgoptm');
	}

/**
	 * Manually start async req
	 *
	 * @since 5.5
	 */
	public static function start_async() {
		Task::async_call('imgoptm_force');

$msg = __('Started async image optimization request', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Check if need to pull or not
	 *
	 * @since 7.2
	 */
	public static function need_pull() {
		$tag = self::get_option(self::DB_NEED_PULL);
		if (!$tag || $tag != self::STATUS_NOTIFIED) {
			return false;
		}
		return true;
	}

/**
	 * Ajax req handler
	 *
	 * @since 5.5
	 */
	public static function async_handler( $force = false ) {
		self::debug('------------async-------------start_async_handler');

if (!self::need_pull()) {
			self::debug('❌ no need pull');
			return;
		}

if (defined('LITESPEED_IMG_OPTM_PULL_CRON') && !LITESPEED_IMG_OPTM_PULL_CRON) {
			self::debug('Cron disabled [define] LITESPEED_IMG_OPTM_PULL_CRON');
			return;
		}

self::cls()->pull($force);
	}

/**
	 * Calculate pull threads
	 *
	 * @since  5.8
	 * @access private
	 */
	private function _calc_pull_threads() {
		global $wpdb;

if (defined('LITESPEED_IMG_OPTM_PULL_THREADS')) {
			return LITESPEED_IMG_OPTM_PULL_THREADS;
		}

// Tune number of images per request based on number of images waiting and cloud packages
		$imgs_per_req = 1; // base 1, ramp up to ~50 max

// Ramp up the request rate based on how many images are waiting
		$c              = "SELECT count(id) FROM `$this->_table_img_optming` WHERE optm_status = %d";
		$_c             = $wpdb->prepare($c, array( self::STATUS_NOTIFIED ));
		$images_waiting = $wpdb->get_var($_c);
		if ($images_waiting && $images_waiting > 0) {
			$imgs_per_req = ceil($images_waiting / 1000); // ie. download 5/request if 5000 images are waiting
		}

// Cap the request rate at 50 images per request
		$imgs_per_req = min(50, $imgs_per_req);

self::debug('Pulling images at rate: ' . $imgs_per_req . ' Images per request.');

return $imgs_per_req;
	}

/**
	 * Pull optimized img
	 *
	 * @since  1.6
	 * @access public
	 */
	public function pull( $manual = false ) {
		global $wpdb;
		$timeoutLimit = ini_get('max_execution_time');
		$endts        = time() + $timeoutLimit;

self::debug('' . ($manual ? 'Manually' : 'Cron') . ' pull started [timeout: ' . $timeoutLimit . 's]');

if ($this->cron_running()) {
			self::debug('Pull cron is running');

$msg = __('Pull Cron is running', 'litespeed-cache');
			Admin_Display::note($msg);
			return;
		}

$this->_summary['last_pulled']         = time();
		$this->_summary['last_pulled_by_cron'] = !$manual;
		self::save_summary();

$imgs_per_req = $this->_calc_pull_threads();
		$q            = "SELECT * FROM `$this->_table_img_optming` WHERE optm_status = %d ORDER BY id LIMIT %d";
		$_q           = $wpdb->prepare($q, array( self::STATUS_NOTIFIED, $imgs_per_req ));

$rm_ori_bkup = $this->conf(self::O_IMG_OPTM_RM_BKUP);

$total_pulled_ori  = 0;
		$total_pulled_webp = 0;
		$total_pulled_avif = 0;

$server_list = array();

try {
			while ($img_rows = $wpdb->get_results($_q)) {
				self::debug('timeout left: ' . ($endts - time()) . 's');
				if (function_exists('set_time_limit')) {
					$endts += 600;
					self::debug('Endtime extended to ' . date('Ymd H:i:s', $endts));
					set_time_limit(600); // This will be no more important as we use noabort now
				}
				// Disabled as we use noabort
				// if ($endts - time() < 10) {
				// self::debug("🚨 End loop due to timeout limit reached " . $timeoutLimit . "s");
				// break;
				// }

/**
				 * Update cron timestamp to avoid duplicated running
				 *
				 * @since  1.6.2
				 */
				$this->_update_cron_running();

// Run requests in parallel
				$requests    = array(); // store each request URL for Requests::request_multiple()
				$imgs_by_req = array(); // store original request data so that we can reference it in the response
				$req_counter = 0;
				foreach ($img_rows as $row_img) {
					// request original image
					$server_info = \json_decode($row_img->server_info, true);
					if (!empty($server_info['ori'])) {
						$image_url = $server_info['server'] . '/' . $server_info['ori'];
						self::debug('Queueing pull: ' . $image_url);
						$requests[$req_counter]      = array(
							'url' => $image_url,
							'type' => 'GET',
						);
						$imgs_by_req[$req_counter++] = array(
							'type' => 'ori',
							'data' => $row_img,
						);
					}

// request webp image
					$webp_size = 0;
					if (!empty($server_info['webp'])) {
						$image_url = $server_info['server'] . '/' . $server_info['webp'];
						self::debug('Queueing pull WebP: ' . $image_url);
						$requests[$req_counter]      = array(
							'url' => $image_url,
							'type' => 'GET',
						);
						$imgs_by_req[$req_counter++] = array(
							'type' => 'webp',
							'data' => $row_img,
						);
					}

// request avif image
					$avif_size = 0;
					if (!empty($server_info['avif'])) {
						$image_url = $server_info['server'] . '/' . $server_info['avif'];
						self::debug('Queueing pull AVIF: ' . $image_url);
						$requests[$req_counter]      = array(
							'url' => $image_url,
							'type' => 'GET',
						);
						$imgs_by_req[$req_counter++] = array(
							'type' => 'avif',
							'data' => $row_img,
						);
					}
				}
				self::debug('Loaded images count: ' . $req_counter);

$complete_action = function ( $response, $req_count ) use ( $imgs_by_req, $rm_ori_bkup, &$total_pulled_ori, &$total_pulled_webp, &$total_pulled_avif, &$server_list ) {
					global $wpdb;
					$row_data = isset($imgs_by_req[$req_count]) ? $imgs_by_req[$req_count] : false;
					if (false === $row_data) {
						self::debug('❌ failed to pull image: Request not found in lookup variable.');
						return;
					}
					$row_type    = isset($row_data['type']) ? $row_data['type'] : 'ori';
					$row_img     = $row_data['data'];
					$local_file  = $this->wp_upload_dir['basedir'] . '/' . $row_img->src;
					$server_info = \json_decode($row_img->server_info, true);

if (empty($response->success)) {
						if (!empty($response->status_code) && 404 == $response->status_code) {
							$this->_step_back_image($row_img->id);

$msg = __('Some optimized image file(s) has expired and was cleared.', 'litespeed-cache');
							Admin_Display::error($msg);
							return;
						} else {
							// handle error
							$image_url = $server_info['server'] . '/' . $server_info[$row_type];
							self::debug(
								'❌ failed to pull image (' .
									$row_type .
									'): ' .
									(!empty($response->status_code) ? $response->status_code : '') .
									' [Local: ' .
									$row_img->src .
									'] / [remote: ' .
									$image_url .
									']'
							);
							throw new \Exception('Failed to pull image ' . (!empty($response->status_code) ? $response->status_code : '') . ' [url] ' . $image_url);
							return;
						}
					}
					// Handle wp_remote_get 404 as its success=true
					if (!empty($response->status_code)) {
						if ($response->status_code == 404) {
							$this->_step_back_image($row_img->id);

$msg = __('Some optimized image file(s) has expired and was cleared.', 'litespeed-cache');
							Admin_Display::error($msg);
							return;
						}
						// Note: if there is other error status code found in future, handle here
					}

if ('webp' === $row_type) {
						file_put_contents($local_file . '.webp', $response->body);

if (!file_exists($local_file . '.webp') || !filesize($local_file . '.webp') || md5_file($local_file . '.webp') !== $server_info['webp_md5']) {
							self::debug('❌ Failed to pull optimized webp img: file md5 mismatch, server md5: ' . $server_info['webp_md5']);

// Delete working table
							$q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d ";
							$wpdb->query($wpdb->prepare($q, $row_img->id));

$msg = __('Pulled WebP image md5 does not match the notified WebP image md5.', 'litespeed-cache');
							Admin_Display::error($msg);
							return;
						}

self::debug('Pulled optimized img WebP: ' . $local_file . '.webp');

$webp_size = filesize($local_file . '.webp');

/**
						 * API for WebP
						 *
						 * @since 2.9.5
						 * @since  3.0 $row_img less elements (see above one)
						 * @see #751737  - API docs for WEBP generation
						 */
						do_action('litespeed_img_pull_webp', $row_img, $local_file . '.webp');

++$total_pulled_webp;
					} elseif ('avif' === $row_type) {
						file_put_contents($local_file . '.avif', $response->body);

if (!file_exists($local_file . '.avif') || !filesize($local_file . '.avif') || md5_file($local_file . '.avif') !== $server_info['avif_md5']) {
							self::debug('❌ Failed to pull optimized avif img: file md5 mismatch, server md5: ' . $server_info['avif_md5']);

// Delete working table
							$q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d ";
							$wpdb->query($wpdb->prepare($q, $row_img->id));

$msg = __('Pulled AVIF image md5 does not match the notified AVIF image md5.', 'litespeed-cache');
							Admin_Display::error($msg);
							return;
						}

self::debug('Pulled optimized img AVIF: ' . $local_file . '.avif');

$avif_size = filesize($local_file . '.avif');

/**
						 * API for AVIF
						 *
						 * @since 7.0
						 */
						do_action('litespeed_img_pull_avif', $row_img, $local_file . '.avif');

++$total_pulled_avif;
					} else {
						// "ori" image type
						file_put_contents($local_file . '.tmp', $response->body);

if (!file_exists($local_file . '.tmp') || !filesize($local_file . '.tmp') || md5_file($local_file . '.tmp') !== $server_info['ori_md5']) {
							self::debug(
								'❌ Failed to pull optimized img: file md5 mismatch [url] ' .
									$server_info['server'] .
									'/' .
									$server_info['ori'] .
									' [server_md5] ' .
									$server_info['ori_md5']
							);

// Delete working table
							$q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d ";
							$wpdb->query($wpdb->prepare($q, $row_img->id));

$msg = __('One or more pulled images does not match with the notified image md5', 'litespeed-cache');
							Admin_Display::error($msg);
							return;
						}

// Backup ori img
						if (!$rm_ori_bkup) {
							$extension = pathinfo($local_file, PATHINFO_EXTENSION);
							$bk_file   = substr($local_file, 0, -strlen($extension)) . 'bk.' . $extension;
							file_exists($local_file) && rename($local_file, $bk_file);
						}

// Replace ori img
						rename($local_file . '.tmp', $local_file);

self::debug('Pulled optimized img: ' . $local_file);

/**
						 * API Hook
						 *
						 * @since  2.9.5
						 * @since  3.0 $row_img has less elements now. Most useful ones are `post_id`/`src`
						 */
						do_action('litespeed_img_pull_ori', $row_img, $local_file);

self::debug2('Remove _table_img_optming record [id] ' . $row_img->id);
					}

// Delete working table
					$q = "DELETE FROM `$this->_table_img_optming` WHERE id = %d ";
					$wpdb->query($wpdb->prepare($q, $row_img->id));

// Save server_list to notify taken
					if (empty($server_list[$server_info['server']])) {
						$server_list[$server_info['server']] = array();
					}

$server_info_id                        = !empty($server_info['file_id']) ? $server_info['file_id'] : $server_info['id'];
					$server_list[$server_info['server']][] = $server_info_id;

++$total_pulled_ori;
				};

$force_wp_remote_get = defined('LITESPEED_FORCE_WP_REMOTE_GET') && LITESPEED_FORCE_WP_REMOTE_GET;
				if (!$force_wp_remote_get && class_exists('\WpOrg\Requests\Requests') && class_exists('\WpOrg\Requests\Autoload') && version_compare(PHP_VERSION, '5.6.0', '>=')) {
					// Make sure Requests can load internal classes.
					Autoload::register();

// Run pull requests in parallel
					Requests::request_multiple($requests, array(
						'timeout' => 60,
						'connect_timeout' => 60,
						'complete' => $complete_action,
					));
				} else {
					foreach ($requests as $cnt => $req) {
						$wp_response      = wp_safe_remote_get($req['url'], array( 'timeout' => 60 ));
						$request_response = array(
							'success' => false,
							'status_code' => 0,
							'body' => null,
						);
						if (is_wp_error($wp_response)) {
							$error_message = $wp_response->get_error_message();
							self::debug('❌ failed to pull image: ' . $error_message);
						} else {
							$request_response['success']     = true;
							$request_response['status_code'] = $wp_response['response']['code'];
							$request_response['body']        = $wp_response['body'];
						}
						self::debug('response code [code] ' . $wp_response['response']['code'] . ' [url] ' . $req['url']);

$request_response = (object) $request_response;

$complete_action($request_response, $cnt);
					}
				}
				self::debug('Current batch pull finished');
			}
		} catch (\Exception $e) {
			Admin_Display::error('Image pull process failure: ' . $e->getMessage());
		}

// Notify IAPI images taken
		foreach ($server_list as $server => $img_list) {
			$data = array(
				'action' => self::CLOUD_ACTION_TAKEN,
				'list' => $img_list,
				'server' => $server,
			);
			// TODO: improve this so we do not call once per server, but just once and then filter on the server side
			Cloud::post(Cloud::SVC_IMG_OPTM, $data);
		}

if (empty($this->_summary['img_taken'])) {
			$this->_summary['img_taken'] = 0;
		}
		$this->_summary['img_taken'] += $total_pulled_ori + $total_pulled_webp + $total_pulled_avif;
		self::save_summary();

// Manually running needs to roll back timestamp for next running
		if ($manual) {
			$this->_update_cron_running(true);
		}

// $msg = sprintf(__('Pulled %d image(s)', 'litespeed-cache'), $total_pulled_ori + $total_pulled_webp);
		// Admin_Display::success($msg);

// Check if there is still task in queue
		$q               = "SELECT * FROM `$this->_table_img_optming` WHERE optm_status = %d LIMIT 1";
		$to_be_continued = $wpdb->get_row($wpdb->prepare($q, self::STATUS_NOTIFIED));
		if ($to_be_continued) {
			self::debug('Task in queue, to be continued...');
			return;
			// return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_PULL);
		}

// If all pulled, update tag to done
		self::debug('Marked pull status to all pulled');
		self::update_option(self::DB_NEED_PULL, self::STATUS_PULLED);
	}

/**
	 * Push image back to previous status
	 *
	 * @since  3.0
	 * @access private
	 */
	private function _step_back_image( $id ) {
		global $wpdb;

self::debug('Push image back to new status [id] ' . $id);

// Reset the image to gathered status
		$q = "UPDATE `$this->_table_img_optming` SET optm_status = %d WHERE id = %d ";
		$wpdb->query($wpdb->prepare($q, array( self::STATUS_RAW, $id )));
	}

/**
	 * Parse wp's meta value
	 *
	 * @since 1.6.7
	 * @access private
	 */
	private function _parse_wp_meta_value( $v ) {
		if (empty($v)) {
			self::debug('bypassed parsing meta due to null value');
			return false;
		}

if (!$v->meta_value) {
			self::debug('bypassed parsing meta due to no meta_value: pid ' . $v->post_id);
			return false;
		}

$meta_value = @maybe_unserialize($v->meta_value);
		if (!is_array($meta_value)) {
			self::debug('bypassed parsing meta due to meta_value not json: pid ' . $v->post_id);
			return false;
		}

if (empty($meta_value['file'])) {
			self::debug('bypassed parsing meta due to no ori file: pid ' . $v->post_id);
			return false;
		}

return $meta_value;
	}

/**
	 * Clean up all unfinished queue locally and to Cloud server
	 *
	 * @since 2.1.2
	 * @access public
	 */
	public function clean() {
		global $wpdb;

// Reset img_optm table's queue
		if ($this->__data->tb_exist('img_optming')) {
			// Get min post id to mark
			$q       = "SELECT MIN(post_id) FROM `$this->_table_img_optming`";
			$min_pid = $wpdb->get_var($q) - 1;
			if ($this->_summary['next_post_id'] > $min_pid) {
				$this->_summary['next_post_id'] = $min_pid;
				self::save_summary();
			}

$q = "DELETE FROM `$this->_table_img_optming`";
			$wpdb->query($q);
		}

$msg = __('Cleaned up unfinished data successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Reset image counter
	 *
	 * @since 7.0
	 * @access private
	 */
	private function _reset_counter() {
		self::debug('reset image optm counter');
		$this->_summary['next_post_id'] = 0;
		self::save_summary();

$this->clean();

$msg = __('Reset image optimization counter successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Destroy all optimized images
	 *
	 * @since 3.0
	 * @access private
	 */
	private function _destroy() {
		global $wpdb;

self::debug('executing DESTROY process');

$offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0;
		/**
		 * Limit images each time before redirection to fix Out of memory issue. #665465
		 *
		 * @since  2.9.8
		 */
		// Start deleting files
		$limit = apply_filters('litespeed_imgoptm_destroy_max_rows', 500);

$img_q = "SELECT b.post_id, b.meta_value
			FROM `$wpdb->posts` a
			LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
			WHERE b.meta_key = '_wp_attachment_metadata'
				AND a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
			ORDER BY a.ID
			LIMIT %d,%d
			";
		$q     = $wpdb->prepare($img_q, array( $offset * $limit, $limit ));
		$list  = $wpdb->get_results($q);
		$i     = 0;
		foreach ($list as $v) {
			if (!$v->post_id) {
				continue;
			}

$meta_value = $this->_parse_wp_meta_value($v);
			if (!$meta_value) {
				continue;
			}

++$i;

$this->tmp_pid  = $v->post_id;
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_destroy_optm_file($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_destroy_optm_file' ), $meta_value['sizes']);
			}
		}

self::debug('batch switched images total: ' . $i);

++$offset;
		$to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 )));
		if ($to_be_continued) {
			// Check if post_id is beyond next_post_id
			self::debug('[next_post_id] ' . $this->_summary['next_post_id'] . ' [cursor post id] ' . $to_be_continued->post_id);
			if ($to_be_continued->post_id <= $this->_summary['next_post_id']) {
				self::debug('redirecting to next');
				return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_DESTROY);
			}
			self::debug('🎊 Finished destroying');
		}

// Delete postmeta info
		$q = "DELETE FROM `$wpdb->postmeta` WHERE meta_key = %s";
		$wpdb->query($wpdb->prepare($q, self::DB_SIZE));
		$wpdb->query($wpdb->prepare($q, self::DB_SET));

// Delete img_optm table
		$this->__data->tb_del('img_optm');
		$this->__data->tb_del('img_optming');

// Clear options table summary info
		self::delete_option('_summary');
		self::delete_option(self::DB_NEED_PULL);

$msg = __('Destroy all optimization data successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Destroy optm file
	 */
	private function _destroy_optm_file( $meta_value, $is_ori_file = false ) {
		$short_file_path = $meta_value['file'];
		if (!$is_ori_file) {
			$short_file_path = $this->tmp_path . $short_file_path;
		}
		self::debug('deleting ' . $short_file_path);

// del webp
		$this->__media->info($short_file_path . '.webp', $this->tmp_pid) && $this->__media->del($short_file_path . '.webp', $this->tmp_pid);
		$this->__media->info($short_file_path . '.optm.webp', $this->tmp_pid) && $this->__media->del($short_file_path . '.optm.webp', $this->tmp_pid);

// del avif
		$this->__media->info($short_file_path . '.avif', $this->tmp_pid) && $this->__media->del($short_file_path . '.avif', $this->tmp_pid);
		$this->__media->info($short_file_path . '.optm.avif', $this->tmp_pid) && $this->__media->del($short_file_path . '.optm.avif', $this->tmp_pid);

$extension      = pathinfo($short_file_path, PATHINFO_EXTENSION);
		$local_filename = substr($short_file_path, 0, -strlen($extension) - 1);
		$bk_file        = $local_filename . '.bk.' . $extension;
		$bk_optm_file   = $local_filename . '.bk.optm.' . $extension;

// del optimized ori
		if ($this->__media->info($bk_file, $this->tmp_pid)) {
			self::debug('deleting optim ori');
			$this->__media->del($short_file_path, $this->tmp_pid);
			$this->__media->rename($bk_file, $short_file_path, $this->tmp_pid);
		}
		$this->__media->info($bk_optm_file, $this->tmp_pid) && $this->__media->del($bk_optm_file, $this->tmp_pid);
	}

/**
	 * Rescan to find new generated images
	 *
	 * @since 1.6.7
	 * @access private
	 */
	private function _rescan() {
		global $wpdb;
		exit('tobedone');

$offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0;
		$limit  = 500;

self::debug('rescan images');

// Get images
		$q    = "SELECT b.post_id, b.meta_value
			FROM `$wpdb->posts` a, `$wpdb->postmeta` b
			WHERE a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
				AND a.ID = b.post_id
				AND b.meta_key = '_wp_attachment_metadata'
			ORDER BY a.ID
			LIMIT %d, %d
			";
		$list = $wpdb->get_results($wpdb->prepare($q, $offset * $limit, $limit + 1)); // last one is the seed for next batch

if (!$list) {
			$msg = __('Rescanned successfully.', 'litespeed-cache');
			Admin_Display::success($msg);

self::debug('rescan bypass: no gathered image found');
			return;
		}

if (count($list) == $limit + 1) {
			$to_be_continued = true;
			array_pop($list); // last one is the seed for next round, discard here.
		} else {
			$to_be_continued = false;
		}

// Prepare post_ids to inquery gathered images
		$pid_set      = array();
		$scanned_list = array();
		foreach ($list as $v) {
			$meta_value = $this->_parse_wp_meta_value($v);
			if (!$meta_value) {
				continue;
			}

$scanned_list[] = array(
				'pid' => $v->post_id,
				'meta' => $meta_value,
			);

$pid_set[] = $v->post_id;
		}

// Build gathered images
		$q    = "SELECT src, post_id FROM `$this->_table_img_optm` WHERE post_id IN (" . implode(',', array_fill(0, count($pid_set), '%d')) . ')';
		$list = $wpdb->get_results($wpdb->prepare($q, $pid_set));
		foreach ($list as $v) {
			$this->_existed_src_list[] = $v->post_id . '.' . $v->src;
		}

// Find new images
		foreach ($scanned_list as $v) {
			$meta_value = $v['meta'];
			// Parse all child src and put them into $this->_img_in_queue, missing ones to $this->_img_in_queue_missed
			$this->tmp_pid  = $v['pid'];
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_append_img_queue($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_append_img_queue' ), $meta_value['sizes']);
			}
		}

self::debug('rescanned [img] ' . count($this->_img_in_queue));

$count = count($this->_img_in_queue);
		if ($count > 0) {
			// Save to DB
			$this->_save_raw();
		}

if ($to_be_continued) {
			return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_RESCAN);
		}

$msg = $count ? sprintf(__('Rescanned %d images successfully.', 'litespeed-cache'), $count) : __('Rescanned successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Calculate bkup original images storage
	 *
	 * @since 2.2.6
	 * @access private
	 */
	private function _calc_bkup() {
		global $wpdb;

$offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0;
		$limit  = 500;

if (!$offset) {
			$this->_summary['bk_summary'] = array(
				'date' => time(),
				'count' => 0,
				'sum' => 0,
			);
		}

$img_q = "SELECT b.post_id, b.meta_value
			FROM `$wpdb->posts` a
			LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
			WHERE b.meta_key = '_wp_attachment_metadata'
				AND a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
			ORDER BY a.ID
			LIMIT %d,%d
			";
		$q     = $wpdb->prepare($img_q, array( $offset * $limit, $limit ));
		$list  = $wpdb->get_results($q);
		foreach ($list as $v) {
			if (!$v->post_id) {
				continue;
			}

$meta_value = $this->_parse_wp_meta_value($v);
			if (!$meta_value) {
				continue;
			}

$this->tmp_pid  = $v->post_id;
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_get_bk_size($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_get_bk_size' ), $meta_value['sizes']);
			}
		}

$this->_summary['bk_summary']['date'] = time();
		self::save_summary();

self::debug('_calc_bkup total: ' . $this->_summary['bk_summary']['count'] . ' [size] ' . $this->_summary['bk_summary']['sum']);

++$offset;
		$to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 )));

if ($to_be_continued) {
			return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_CALC_BKUP);
		}

$msg = __('Calculated backups successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Calculate single size
	 */
	private function _get_bk_size( $meta_value, $is_ori_file = false ) {
		$short_file_path = $meta_value['file'];
		if (!$is_ori_file) {
			$short_file_path = $this->tmp_path . $short_file_path;
		}

$extension      = pathinfo($short_file_path, PATHINFO_EXTENSION);
		$local_filename = substr($short_file_path, 0, -strlen($extension) - 1);
		$bk_file        = $local_filename . '.bk.' . $extension;

$img_info = $this->__media->info($bk_file, $this->tmp_pid);
		if (!$img_info) {
			return;
		}

++$this->_summary['bk_summary']['count'];
		$this->_summary['bk_summary']['sum'] += $img_info['size'];
	}

/**
	 * Delete bkup original images storage
	 *
	 * @since  2.5
	 * @access public
	 */
	public function rm_bkup() {
		global $wpdb;

if (!$this->__data->tb_exist('img_optming')) {
			return;
		}

$offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0;
		$limit  = 500;

if (empty($this->_summary['rmbk_summary'])) {
			$this->_summary['rmbk_summary'] = array(
				'date' => time(),
				'count' => 0,
				'sum' => 0,
			);
		}

$img_q = "SELECT b.post_id, b.meta_value
			FROM `$wpdb->posts` a
			LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
			WHERE b.meta_key = '_wp_attachment_metadata'
				AND a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
			ORDER BY a.ID
			LIMIT %d,%d
			";
		$q     = $wpdb->prepare($img_q, array( $offset * $limit, $limit ));
		$list  = $wpdb->get_results($q);
		foreach ($list as $v) {
			if (!$v->post_id) {
				continue;
			}

$meta_value = $this->_parse_wp_meta_value($v);
			if (!$meta_value) {
				continue;
			}

$this->tmp_pid  = $v->post_id;
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_del_bk_file($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_del_bk_file' ), $meta_value['sizes']);
			}
		}

$this->_summary['rmbk_summary']['date'] = time();
		self::save_summary();

self::debug('rm_bkup total: ' . $this->_summary['rmbk_summary']['count'] . ' [size] ' . $this->_summary['rmbk_summary']['sum']);

++$offset;
		$to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 )));

if ($to_be_continued) {
			return Router::self_redirect(Router::ACTION_IMG_OPTM, self::TYPE_RM_BKUP);
		}

$msg = __('Removed backups successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Delete single file
	 */
	private function _del_bk_file( $meta_value, $is_ori_file = false ) {
		$short_file_path = $meta_value['file'];
		if (!$is_ori_file) {
			$short_file_path = $this->tmp_path . $short_file_path;
		}

$extension      = pathinfo($short_file_path, PATHINFO_EXTENSION);
		$local_filename = substr($short_file_path, 0, -strlen($extension) - 1);
		$bk_file        = $local_filename . '.bk.' . $extension;

$img_info = $this->__media->info($bk_file, $this->tmp_pid);
		if (!$img_info) {
			return;
		}

++$this->_summary['rmbk_summary']['count'];
		$this->_summary['rmbk_summary']['sum'] += $img_info['size'];

$this->__media->del($bk_file, $this->tmp_pid);
	}

/**
	 * Count images
	 *
	 * @since 1.6
	 * @access public
	 */
	public function img_count() {
		global $wpdb;

$q           = "SELECT count(*)
			FROM `$wpdb->posts` a
			LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
			WHERE b.meta_key = '_wp_attachment_metadata'
				AND a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
			";
		$groups_all  = $wpdb->get_var($q);
		$groups_new  = $wpdb->get_var($q . ' AND ID>' . (int) $this->_summary['next_post_id'] . ' ORDER BY ID');
		$groups_done = $wpdb->get_var($q . ' AND ID<=' . (int) $this->_summary['next_post_id'] . ' ORDER BY ID');

$q      = "SELECT b.post_id
			FROM `$wpdb->posts` a
			LEFT JOIN `$wpdb->postmeta` b ON b.post_id = a.ID
			WHERE b.meta_key = '_wp_attachment_metadata'
				AND a.post_type = 'attachment'
				AND a.post_status = 'inherit'
				AND a.post_mime_type IN ('image/jpeg', 'image/png', 'image/gif')
			ORDER BY a.ID DESC
			LIMIT 1
			";
		$max_id = $wpdb->get_var($q);

$count_list = array(
			'max_id' => $max_id,
			'groups_all' => $groups_all,
			'groups_new' => $groups_new,
			'groups_done' => $groups_done,
		);

// images count from work table
		if ($this->__data->tb_exist('img_optming')) {
			$q               = "SELECT COUNT(DISTINCT post_id),COUNT(*) FROM `$this->_table_img_optming` WHERE optm_status = %d";
			$groups_to_check = array( self::STATUS_RAW, self::STATUS_REQUESTED, self::STATUS_NOTIFIED, self::STATUS_ERR_FETCH );
			foreach ($groups_to_check as $v) {
				$count_list['img.' . $v]                                   = $count_list['group.' . $v] = 0;
				list($count_list['group.' . $v], $count_list['img.' . $v]) = $wpdb->get_row($wpdb->prepare($q, $v), ARRAY_N);
			}
		}

return $count_list;
	}

/**
	 * Check if fetch cron is running
	 *
	 * @since  1.6.2
	 * @access public
	 */
	public function cron_running( $bool_res = true ) {
		$last_run = !empty($this->_summary['last_pull']) ? $this->_summary['last_pull'] : 0;

$is_running = $last_run && time() - $last_run < 120;

if ($bool_res) {
			return $is_running;
		}

return array( $last_run, $is_running );
	}

/**
	 * Update fetch cron timestamp tag
	 *
	 * @since  1.6.2
	 * @access private
	 */
	private function _update_cron_running( $done = false ) {
		$this->_summary['last_pull'] = time();

if ($done) {
			// Only update cron tag when its from the active running cron
			if ($this->_cron_ran) {
				// Rollback for next running
				$this->_summary['last_pull'] -= 120;
			} else {
				return;
			}
		}

self::save_summary();

$this->_cron_ran = true;
	}

/**
	 * Batch switch images to ori/optm version
	 *
	 * @since  1.6.2
	 * @access public
	 */
	public function batch_switch( $type ) {
		global $wpdb;

if (defined('LITESPEED_CLI') || wp_doing_cron()) {
			$offset = 0;
			while ($offset !== 'done') {
				Admin_Display::info("Starting switch to $type [offset] $offset");
				$offset = $this->_batch_switch($type, $offset);
			}
		} else {
			$offset = !empty($_GET['litespeed_i']) ? $_GET['litespeed_i'] : 0;

$newOffset = $this->_batch_switch($type, $offset);
			if ($newOffset !== 'done') {
				return Router::self_redirect(Router::ACTION_IMG_OPTM, $type);
			}
		}

$msg = __('Switched images successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Switch images per offset
	 */
	private function _batch_switch( $type, $offset ) {
		global $wpdb;
		$limit          = 500;
		$this->tmp_type = $type;

$meta_value = $this->_parse_wp_meta_value($v);
			if (!$meta_value) {
				continue;
			}

++$i;

$this->tmp_pid  = $v->post_id;
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_switch_bk_file($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_switch_bk_file' ), $meta_value['sizes']);
			}
		}

self::debug('batch switched images total: ' . $i . ' [type] ' . $type);

++$offset;
		$to_be_continued = $wpdb->get_row($wpdb->prepare($img_q, array( $offset * $limit, 1 )));
		if ($to_be_continued) {
			return $offset;
		}
		return 'done';
	}

/**
	 * Delete single file
	 */
	private function _switch_bk_file( $meta_value, $is_ori_file = false ) {
		$short_file_path = $meta_value['file'];
		if (!$is_ori_file) {
			$short_file_path = $this->tmp_path . $short_file_path;
		}

// self::debug('_switch_bk_file ' . $bk_file . ' [type] ' . $this->tmp_type);
		// switch to ori
		if ($this->tmp_type === self::TYPE_BATCH_SWITCH_ORI || $this->tmp_type == 'orig') {
			// self::debug('switch to orig ' . $bk_file);
			if (!$this->__media->info($bk_file, $this->tmp_pid)) {
				return;
			}
			$this->__media->rename($local_filename . '.' . $extension, $bk_optm_file, $this->tmp_pid);
			$this->__media->rename($bk_file, $local_filename . '.' . $extension, $this->tmp_pid);
		}
		// switch to optm
		elseif ($this->tmp_type === self::TYPE_BATCH_SWITCH_OPTM || $this->tmp_type == 'optm') {
			// self::debug('switch to optm ' . $bk_file);
			if (!$this->__media->info($bk_optm_file, $this->tmp_pid)) {
				return;
			}
			$this->__media->rename($local_filename . '.' . $extension, $bk_file, $this->tmp_pid);
			$this->__media->rename($bk_optm_file, $local_filename . '.' . $extension, $this->tmp_pid);
		}
	}

/**
	 * Switch image between original one and optimized one
	 *
	 * @since 1.6.2
	 * @access private
	 */
	private function _switch_optm_file( $type ) {
		Admin_Display::success(__('Switched to optimized file successfully.', 'litespeed-cache'));
		return;
		global $wpdb;

$pid         = substr($type, 4);
		$switch_type = substr($type, 0, 4);

$q    = "SELECT src,post_id FROM `$this->_table_img_optm` WHERE post_id = %d AND optm_status = %d";
		$list = $wpdb->get_results($wpdb->prepare($q, array( $pid, self::STATUS_PULLED )));

$msg = 'Unknown Msg';

foreach ($list as $v) {
			// to switch webp file
			if ($switch_type === 'webp') {
				if ($this->__media->info($v->src . '.webp', $v->post_id)) {
					$this->__media->rename($v->src . '.webp', $v->src . '.optm.webp', $v->post_id);
					self::debug('Disabled WebP: ' . $v->src);

$msg = __('Disabled WebP file successfully.', 'litespeed-cache');
				} elseif ($this->__media->info($v->src . '.optm.webp', $v->post_id)) {
					$this->__media->rename($v->src . '.optm.webp', $v->src . '.webp', $v->post_id);
					self::debug('Enable WebP: ' . $v->src);

$msg = __('Enabled WebP file successfully.', 'litespeed-cache');
				}
			}
			// to switch avif file
			elseif ($switch_type === 'avif') {
				if ($this->__media->info($v->src . '.avif', $v->post_id)) {
					$this->__media->rename($v->src . '.avif', $v->src . '.optm.avif', $v->post_id);
					self::debug('Disabled AVIF: ' . $v->src);

$msg = __('Disabled AVIF file successfully.', 'litespeed-cache');
				} elseif ($this->__media->info($v->src . '.optm.avif', $v->post_id)) {
					$this->__media->rename($v->src . '.optm.avif', $v->src . '.avif', $v->post_id);
					self::debug('Enable AVIF: ' . $v->src);

$msg = __('Enabled AVIF file successfully.', 'litespeed-cache');
				}
			}
			// to switch original file
			else {
				$extension      = pathinfo($v->src, PATHINFO_EXTENSION);
				$local_filename = substr($v->src, 0, -strlen($extension) - 1);
				$bk_file        = $local_filename . '.bk.' . $extension;
				$bk_optm_file   = $local_filename . '.bk.optm.' . $extension;

// revert ori back
				if ($this->__media->info($bk_file, $v->post_id)) {
					$this->__media->rename($v->src, $bk_optm_file, $v->post_id);
					$this->__media->rename($bk_file, $v->src, $v->post_id);
					self::debug('Restore original img: ' . $bk_file);

$msg = __('Restored original file successfully.', 'litespeed-cache');
				} elseif ($this->__media->info($bk_optm_file, $v->post_id)) {
					$this->__media->rename($v->src, $bk_file, $v->post_id);
					$this->__media->rename($bk_optm_file, $v->src, $v->post_id);
					self::debug('Switch to optm img: ' . $v->src);

$msg = __('Switched to optimized file successfully.', 'litespeed-cache');
				}
			}
		}

Admin_Display::success($msg);
	}

/**
	 * Delete one optm data and recover original file
	 *
	 * @since 2.4.2
	 * @access public
	 */
	public function reset_row( $post_id ) {
		global $wpdb;

if (!$post_id) {
			return;
		}

// Gathered image don't have DB_SIZE info yet
		// $size_meta = get_post_meta( $post_id, self::DB_SIZE, true );

// if ( ! $size_meta ) {
		// return;
		// }

self::debug('_reset_row [pid] ' . $post_id);

// TODO: Load image sub files
		$img_q = "SELECT b.post_id, b.meta_value
			FROM `$wpdb->postmeta` b
			WHERE b.post_id =%d  AND b.meta_key = '_wp_attachment_metadata'";
		$q     = $wpdb->prepare($img_q, array( $post_id ));
		$v     = $wpdb->get_row($q);

$meta_value = $this->_parse_wp_meta_value($v);
		if ($meta_value) {
			$this->tmp_pid  = $v->post_id;
			$this->tmp_path = pathinfo($meta_value['file'], PATHINFO_DIRNAME) . '/';
			$this->_destroy_optm_file($meta_value, true);
			if (!empty($meta_value['sizes'])) {
				array_map(array( $this, '_destroy_optm_file' ), $meta_value['sizes']);
			}
		}

delete_post_meta($post_id, self::DB_SIZE);
		delete_post_meta($post_id, self::DB_SET);

$msg = __('Reset the optimized data successfully.', 'litespeed-cache');
		Admin_Display::success($msg);
	}

/**
	 * Show an image's optm status
	 *
	 * @since  1.6.5
	 * @access public
	 */
	public function check_img() {
		global $wpdb;

$pid = $_POST['data'];

self::debug('Check image [ID] ' . $pid);

$data = array();

$data['img_count']    = $this->img_count();
		$data['optm_summary'] = self::get_summary();

$data['_wp_attached_file']       = get_post_meta($pid, '_wp_attached_file', true);
		$data['_wp_attachment_metadata'] = get_post_meta($pid, '_wp_attachment_metadata', true);

// Get img_optm data
		$q        = "SELECT * FROM `$this->_table_img_optm` WHERE post_id = %d";
		$list     = $wpdb->get_results($wpdb->prepare($q, $pid));
		$img_data = array();
		if ($list) {
			foreach ($list as $v) {
				$img_data[] = array(
					'id' => $v->id,
					'optm_status' => $v->optm_status,
					'src' => $v->src,
					'srcpath_md5' => $v->srcpath_md5,
					'src_md5' => $v->src_md5,
					'server_info' => $v->server_info,
				);
			}
		}
		$data['img_data'] = $img_data;

return array(
			'_res' => 'ok',
			'data' => $data,
		);
	}

/**
	 * Handle all request actions from main cls
	 *
	 * @since  2.0
	 * @access public
	 */
	public function handler() {
		$type = Router::verify_type();

switch ($type) {
			case self::TYPE_RESET_ROW:
            $this->reset_row(!empty($_GET['id']) ? $_GET['id'] : false);
				break;

case self::TYPE_CALC_BKUP:
            $this->_calc_bkup();
				break;

case self::TYPE_RM_BKUP:
            $this->rm_bkup();
				break;

case self::TYPE_NEW_REQ:
            $this->new_req();
				break;

case self::TYPE_RESCAN:
            $this->_rescan();
				break;

case self::TYPE_RESET_COUNTER:
            $this->_reset_counter();
				break;

case self::TYPE_DESTROY:
            $this->_destroy();
				break;

case self::TYPE_CLEAN:
            $this->clean();
				break;

case self::TYPE_PULL:
            self::start_async();
				break;

case self::TYPE_BATCH_SWITCH_ORI:
			case self::TYPE_BATCH_SWITCH_OPTM:
            $this->batch_switch($type);
				break;

case substr($type, 0, 4) === 'avif':
			case substr($type, 0, 4) === 'webp':
			case substr($type, 0, 4) === 'orig':
            $this->_switch_optm_file($type);
				break;

default:
				break;
		}

Admin::redirect();
	}
}

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