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<?php

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/**

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* Remove plugin settings data.

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* @since 1.7

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* @package Smush

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use Smush\Core\Settings;

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// If uninstall not called from WordPress exit.

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if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {

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exit();

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}

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if ( ! class_exists( '\\Smush\\Core\\Settings' ) ) {

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/* @noinspection PhpIncludeInspection */

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include_once plugin_dir_path( __FILE__ ) . '/core/class-settings.php';

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}

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$keep_data = Settings::get_instance()->get( 'keep_data' );

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// Check if someone want to keep the stats and settings.

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if ( ( defined( 'WP_SMUSH_PRESERVE_STATS' ) && WP_SMUSH_PRESERVE_STATS ) || true === $keep_data ) {

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return;

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}

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global $wpdb;

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$smushit_keys = array(

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'wp-smush-resmush-list',

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'wp-smush-nextgen-resmush-list',

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'wp-smush-resize_sizes',

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'wp-smush-transparent_png',

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'wp-smush-image_sizes',

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'wp-smush-super_smushed',

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'wp-smush-super_smushed_nextgen',

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'wp-smush-settings_updated',

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'wp-smush-hide_update_info',

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'wp-smush-install-type',

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'wp-smush-version',

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'wp-smush-scan',

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'wp-smush-settings',

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'wp-smush-cdn_status',

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'wp-smush-lazy_load',

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'wp-smush-last_run_sync',

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'wp-smush-networkwide',

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'wp-smush-cron_update_running',

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'wp-smush-dismissed-notices',

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'wp-smush-show_upgrade_modal',

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'wp-smush-preset_configs',

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'wp-smush-webp_hide_wizard',

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'wp-smush-hide-tutorials',

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'wp-smush-hide_tutorials_from_bulk_smush', // Possible leftover from 3.8.4.

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'wp-smush-png2jpg-rewrite-rules-flushed',

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'wp-smush-optimization-global-stats',

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'wp-smush-resize-global-stats',

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'wp-smush-png2jpg-global-stats',

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'wp_smush_skip_image_sizes_recheck',

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'wp_smush_image_sizes_state',

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'wp_smush_global_stats',

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'wp-smush-optimize-list',

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'wp-smush-reoptimize-list',

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'wp-smush-error-items-list',

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'wp-smush-plugin-activated',

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'wp_smush_run_optimize_on_scan_completed',

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'wp-smush-nextgen-reoptimize-list',

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'wp-smush-nextgen-super-smushed-list',

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'wp_smush_scan_slice_size',

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'wp_smush_media_library_last_process',

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);

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$db_keys = array(

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'skip-smush-setup',

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'smush_global_stats',

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'wp_smush_stats_nextgen',

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);

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// Cache Keys.

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$cache_smush_group = array(

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'exceeding_items',

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'wp-smush-resize_count',

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'wp-smush-resize_savings',

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'wp-smush-pngjpg_savings',

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'wp-smush-smushed_ids',

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'media_attachments',

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'skipped_images',

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'images_with_backups',

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'wp-smush-dir_total_stats',

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);

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$cache_nextgen_group = array(

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'wp_smush_images',

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'wp_smush_images_smushed',

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'wp_smush_images_unsmushed',

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'wp_smush_stats_nextgen',

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);

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if ( ! is_multisite() ) {

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// Delete Options.

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foreach ( $smushit_keys as $key ) {

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delete_option( $key );

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delete_site_option( $key );

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}

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foreach ( $db_keys as $key ) {

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delete_option( $key );

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delete_site_option( $key );

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}

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// Delete Cache data.

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foreach ( $cache_smush_group as $s_key ) {

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wp_cache_delete( $s_key, 'wp-smush' );

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}

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foreach ( $cache_nextgen_group as $n_key ) {

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wp_cache_delete( $n_key, 'nextgen' );

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}

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wp_cache_delete( 'get_image_sizes', 'smush_image_sizes' );

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delete_transient( 'wp-smush-conflict_check' );

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}

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// Delete Directory Smush stats.

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delete_option( 'dir_smush_stats' );

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delete_option( 'wp_smush_scan' );

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delete_option( 'wp_smush_api_auth' );

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delete_site_option( 'wp_smush_api_auth' );

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// Delete Post meta.

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$meta_type = 'post';

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$meta_key = 'wp-smpro-smush-data';

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$meta_value = '';

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$delete_all = true;

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if ( is_multisite() ) {

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$offset = 0;

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$limit = 100;

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while ( $blogs = $wpdb->get_results( "SELECT blog_id FROM {$wpdb->blogs} LIMIT $offset, $limit", ARRAY_A ) ) {

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if ( $blogs ) {

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foreach ( $blogs as $blog ) {

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switch_to_blog( $blog['blog_id'] );

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delete_metadata( $meta_type, null, $meta_key, $meta_value, $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-lossy', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-resize_savings', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-original_file', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-pngjpg_savings', '', $delete_all );

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foreach ( $smushit_keys as $key ) {

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delete_option( $key );

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delete_site_option( $key );

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}

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foreach ( $db_keys as $key ) {

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delete_option( $key );

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delete_site_option( $key );

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}

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// Delete Cache data.

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foreach ( $cache_smush_group as $s_key ) {

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wp_cache_delete( $s_key, 'wp-smush' );

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}

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foreach ( $cache_nextgen_group as $n_key ) {

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wp_cache_delete( $n_key, 'nextgen' );

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}

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wp_cache_delete( 'get_image_sizes', 'smush_image_sizes' );

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}

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restore_current_blog();

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}

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$offset += $limit;

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}

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} else {

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delete_metadata( $meta_type, null, $meta_key, $meta_value, $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-lossy', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-resize_savings', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-original_file', '', $delete_all );

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delete_metadata( $meta_type, null, 'wp-smush-pngjpg_savings', '', $delete_all );

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}

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// Delete Directory smush table.

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$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->base_prefix}smush_dir_images" );

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// Delete directory scan data.

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delete_option( 'wp-smush-scan-step' );

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// Delete all WebP images.

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global $wp_filesystem;

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if ( is_null( $wp_filesystem ) ) {

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WP_Filesystem();

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}

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$upload_dir = wp_get_upload_dir();

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$webp_dir = dirname( $upload_dir['basedir'] ) . '/smush-webp';

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$wp_filesystem->delete( $webp_dir, true );

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// Delete WebP test image.

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$webp_img = $upload_dir['basedir'] . '/smush-webp-test.png';

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$wp_filesystem->delete( $webp_img );

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// TODO: Add procedure to delete backup files

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// TODO: Update NextGen Metadata to remove Smush stats on plugin deletion.

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