<?php
/**
 * Remove what this plugin stored, when a site deletes it — if the site asked.
 *
 * REDIRECTS ARE KEPT UNLESS THE SETTING SAYS OTHERWISE. "Delete the plugin and install
 * it again" is the first thing anybody tries when something looks wrong, and a site
 * that did that would lose every redirect it had, with every old link turning into a
 * 404 at once and no way back. So by default only the scheduled job is removed and the
 * data stays where it is, ready for a reinstall. The settings screen has a switch for
 * people who really are leaving, and says what it does.
 *
 * @package CodeBold\Redirect
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

/**
 * Clear one site's worth.
 *
 * The names are repeated rather than read from the classes: WordPress runs this file
 * with the plugin unloaded, so nothing of ours is autoloadable here, and a fatal during
 * uninstall leaves the plugin half-removed.
 */
function codebold_redirect_uninstall_site(): void {
	global $wpdb;

	wp_clear_scheduled_hook( 'codebold_redirect_cleanup' );

	$settings = get_option( 'codebold_redirect_settings', [] );

	if ( ! is_array( $settings ) || empty( $settings['delete_data'] ) ) {
		return;
	}

	// phpcs:disable WordPress.DB.DirectDatabaseQuery, WordPress.DB.DirectDatabaseQuery.SchemaChange -- removing our own tables is the point.
	$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}codebold_redirects" );
	$wpdb->query( "DROP TABLE IF EXISTS {$wpdb->prefix}codebold_redirect_404s" );
	// phpcs:enable

	foreach ( [ 'codebold_redirect_settings', 'codebold_redirect_db_version', 'codebold_redirect_patterns' ] as $option ) {
		delete_option( $option );
	}

	delete_metadata( 'user', 0, 'codebold_redirect_404_seen', '', true );
}

if ( ! is_multisite() ) {
	codebold_redirect_uninstall_site();

	return;
}

// On a network, every site has its own tables and its own settings.
$codebold_redirect_sites = get_sites( [ 'fields' => 'ids', 'number' => 0 ] );

foreach ( $codebold_redirect_sites as $codebold_redirect_site ) {
	switch_to_blog( (int) $codebold_redirect_site );

	codebold_redirect_uninstall_site();

	restore_current_blog();
}