<?php
/**
 * Uninstall: removes every option and transient of AJAX Loading.
 *
 * Runs only when the plugin is deleted from the Plugins screen. On multisite
 * every site of the network is cleaned.
 *
 * @package Ajax_loading
 * @since   2.0.0
 */

if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

$wpajxl_cleanup_site = static function () {
	global $wpdb;

	foreach ( array( '_wp_ajax_loading', 'ajax-loading', '_wp_ajax_loading_log', '_wp_ajax_loading_diagnostics' ) as $wpajxl_option ) {
		delete_option( $wpajxl_option );
	}

	// Known transients (works with persistent object caches too).
	delete_transient( 'ajax_loading_log_rate' );

	// Any other transient stored with the plugin prefixes in the options table.
	foreach ( array( 'ajax_loading_', 'wpajxl_' ) as $wpajxl_prefix ) {
		foreach ( array( '_transient_', '_transient_timeout_' ) as $wpajxl_kind ) {
			$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching -- one-off cleanup on uninstall.
				$wpdb->prepare(
					"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s",
					$wpdb->esc_like( $wpajxl_kind . $wpajxl_prefix ) . '%'
				)
			);
		}
	}

	// The direct deletes above bypass the options cache.
	wp_cache_delete( 'alloptions', 'options' );
};

if ( is_multisite() ) {
	$wpajxl_offset = 0;
	do {
		$wpajxl_site_ids = get_sites(
			array(
				'fields' => 'ids',
				'number' => 100,
				'offset' => $wpajxl_offset,
			)
		);
		foreach ( $wpajxl_site_ids as $wpajxl_site_id ) {
			switch_to_blog( (int) $wpajxl_site_id );
			$wpajxl_cleanup_site();
			restore_current_blog();
		}
		$wpajxl_offset += 100;
	} while ( count( $wpajxl_site_ids ) === 100 );
} else {
	$wpajxl_cleanup_site();
}