Sindbad~EG File Manager

<?php
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

class AAL_Maintenance {

	public static function activate( $network_wide ) {
		global $wpdb;

		if ( function_exists( 'is_multisite') && is_multisite() && $network_wide ) {
			$blog_ids = $wpdb->get_col( "SELECT blog_id FROM {$wpdb->blogs}" );
			foreach ( $blog_ids as $blog_id ) {
				switch_to_blog( $blog_id );
				self::_create_tables();
				restore_current_blog();
			}
		} else {
			self::_create_tables();
		}

		wp_clear_scheduled_hook( 'aal/maintenance/clear_old_items' );
	}

	public static function uninstall() {
		global $wpdb;

		if ( function_exists( 'is_multisite') && is_multisite() ) {
			$blog_ids = $wpdb->get_col( "SELECT blog_id FROM {$wpdb->blogs};" );
			foreach ( $blog_ids as $blog_id ) {
				switch_to_blog( $blog_id );
				self::_remove_tables();
				restore_current_blog();
			}
		} else {
			self::_remove_tables();
		}

		wp_clear_scheduled_hook( 'aal/maintenance/clear_old_items' );
	}

	public static function mu_new_blog_installer( $blog_id, $user_id, $domain, $path, $site_id, $meta ) {
		if ( is_plugin_active_for_network( ACTIVITY_LOG_BASE ) ) {
			switch_to_blog( $blog_id );
			self::_create_tables();
			restore_current_blog();
		}
	}

	public static function mu_delete_blog( $blog_id, $drop ) {
		switch_to_blog( $blog_id );
		self::_remove_tables();
		restore_current_blog();
	}

	protected static function _create_tables() {
		global $wpdb;

		$charset_collate = $wpdb->get_charset_collate();

		$sql = "CREATE TABLE IF NOT EXISTS `{$wpdb->prefix}aryo_activity_log` (
					  `histid` int(11) NOT NULL AUTO_INCREMENT,
					  `user_caps` varchar(70) NOT NULL DEFAULT 'guest',
					  `action` varchar(255) NOT NULL,
					  `object_type` varchar(255) NOT NULL,
					  `object_subtype` varchar(255) NOT NULL DEFAULT '',
					  `object_name` varchar(255) NOT NULL,
					  `object_id` int(11) NOT NULL DEFAULT '0',
					  `user_id` int(11) NOT NULL DEFAULT '0',
					  `hist_ip` varchar(55) NOT NULL DEFAULT '127.0.0.1',
					  `hist_time` int(11) NOT NULL DEFAULT '0',
					  PRIMARY KEY (`histid`),
						KEY `user_caps` (`user_caps`),
						KEY `action` (`action`),
						KEY `object_type` (`object_type`),
						KEY `object_subtype` (`object_subtype`),
						KEY `object_name` (`object_name`),
						KEY `user_id` (`user_id`),
						KEY `hist_ip` (`hist_ip`),
						KEY `hist_time` (`hist_time`)
				) $charset_collate;";

		require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
		dbDelta( $sql );

		$admin_role = get_role( 'administrator' );
		if ( $admin_role instanceof WP_Role && ! $admin_role->has_cap( 'view_all_aryo_activity_log' ) )
			$admin_role->add_cap( 'view_all_aryo_activity_log' );
		
		update_option( 'activity_log_db_version', '1.0' );
	}

	protected static function _remove_tables() {
		global $wpdb;

		$wpdb->query( "DROP TABLE IF EXISTS `{$wpdb->prefix}aryo_activity_log`;" );

		$admin_role = get_role( 'administrator' );
		if ( $admin_role && $admin_role->has_cap( 'view_all_aryo_activity_log' ) )
			$admin_role->remove_cap( 'view_all_aryo_activity_log' );

		delete_option( 'activity_log_db_version' );
	}
}

register_activation_hook( ACTIVITY_LOG_BASE, array( 'AAL_Maintenance', 'activate' ) );
register_uninstall_hook( ACTIVITY_LOG_BASE, array( 'AAL_Maintenance', 'uninstall' ) );

// MU installer for new blog.
add_action( 'wpmu_new_blog', array( 'AAL_Maintenance', 'mu_new_blog_installer' ), 10, 6 );
// MU Uninstall for delete blog.
add_action( 'delete_blog', array( 'AAL_Maintenance', 'mu_delete_blog' ), 10, 2 );