<?php
/**
 * Removes everything the plugin stored.
 *
 * @package Acknowledgify
 */

// Exit if not called by WordPress during uninstall.
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

$acknowledgify_option = 'acknowledgify_settings';

/**
 * Delete the option for the current site.
 *
 * @param string $option Option name.
 * @return void
 */
function acknowledgify_delete_site_settings( $option ) {
	delete_option( $option );
	wp_cache_delete( $option, 'options' );
}

if ( is_multisite() ) {
	/*
	 * get_sites() returns at most 100 sites unless told otherwise, so a large
	 * network would have been left with settings on every site past the first
	 * hundred.
	 */
	$acknowledgify_sites = get_sites(
		array(
			'fields' => 'ids',
			'number' => 0,
		)
	);

	foreach ( $acknowledgify_sites as $acknowledgify_site_id ) {
		switch_to_blog( (int) $acknowledgify_site_id );
		acknowledgify_delete_site_settings( $acknowledgify_option );
		restore_current_blog();
	}
} else {
	acknowledgify_delete_site_settings( $acknowledgify_option );
}

/*
 * The post-import notice is stored in a per-user transient with a one minute
 * lifetime, so there is nothing worth enumerating here. Finding every one of
 * them would need a direct database query, which this plugin does not do.
 */