<?php
/**
 * Runs when the plugin is deleted from the Plugins screen, and removes
 * everything it stored: its settings, among them the site's Stackbrace key,
 * which is a secret; the last report's status; the traps (the trap account,
 * only the user this plugin made and marked, and the token of the trap
 * address); the trips it remembered; and the last-login times it recorded.
 * Nothing is sent anywhere.
 *
 * @package Stackbrace
 */

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

/** One site's options and its hourly report. */
function stackbrace_uninstall_site() {
	$options = array(
		'stackbrace_settings',
		'stackbrace_status',
		'stackbrace_trap_token',
		'stackbrace_trips',
		'stackbrace_trip_sent_login',
		'stackbrace_trip_sent_path',
	);
	foreach ( $options as $option ) {
		delete_option( $option );
	}
	wp_clear_scheduled_hook( 'stackbrace_report' );
}

if ( is_multisite() ) {
	// Each site keeps its own settings.
	foreach ( get_sites(
		array(
			'fields' => 'ids',
			'number' => 0,
		)
	) as $stackbrace_site_id ) {
		switch_to_blog( $stackbrace_site_id );
		stackbrace_uninstall_site();
		restore_current_blog();
	}
} else {
	stackbrace_uninstall_site();
}

// The trap account, only if it is the one this plugin made: a user with this
// name that someone else created is left alone. It has written nothing, so
// nothing is reassigned.
$stackbrace_trap = username_exists( 'wpsupport' );
if ( $stackbrace_trap && get_user_meta( $stackbrace_trap, 'stackbrace_trap', true ) === '1' ) {
	if ( is_multisite() ) {
		require_once ABSPATH . 'wp-admin/includes/ms.php';
		wpmu_delete_user( $stackbrace_trap );
	} else {
		require_once ABSPATH . 'wp-admin/includes/user.php';
		wp_delete_user( $stackbrace_trap );
	}
}

// Users are shared by every site of a network, so this is done once.
delete_metadata( 'user', 0, 'stackbrace_last_login', '', true );
delete_metadata( 'user', 0, 'stackbrace_trap', '', true );