<?php
/**
 * Removes all plugin data. Deleting the stored site ID is what lets a
 * reinstall be connected again.
 *
 * @package EmailSendCheck
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

/**
 * Removes this site's options and transients.
 */
function emailsendcheck_uninstall_site() {
	global $wpdb;
	foreach ( array( 'emailsendcheck_binding', 'emailsendcheck_pairing_opened_at', 'emailsendcheck_log', 'emailsendcheck_last_test', 'emailsendcheck_unbound_at' ) as $option ) {
		delete_option( $option );
	}
	// Transients have no "delete by prefix" API. Without an external object
	// cache they live in the options table; with one they simply expire.
	// The replay and rate-limit rows are always in the options table.
	$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 OR option_name LIKE %s OR option_name LIKE %s OR option_name LIKE %s",
			$wpdb->esc_like( '_transient_emailsendcheck_' ) . '%',
			$wpdb->esc_like( '_transient_timeout_emailsendcheck_' ) . '%',
			// Replay and rate-limit rows (EmailSendCheck_State).
			$wpdb->esc_like( 'emailsendcheck_msg_' ) . '%',
			$wpdb->esc_like( 'emailsendcheck_rl_slot_' ) . '%'
		)
	);
}

/**
 * Runs the cleanup on every site in a network, or on the single site.
 */
function emailsendcheck_uninstall() {
	if ( ! is_multisite() ) {
		emailsendcheck_uninstall_site();
		return;
	}

	$site_ids = get_sites(
		array(
			'fields' => 'ids',
			'number' => 0,
		)
	);

	foreach ( $site_ids as $site_id ) {
		switch_to_blog( $site_id );
		emailsendcheck_uninstall_site();
		restore_current_blog();
	}
}

emailsendcheck_uninstall();