<?php
/**
 * Uninstall cleanup for ShapeOptions.
 *
 * @package ShapeOptions
 */

defined( 'WP_UNINSTALL_PLUGIN' ) || exit;

/**
 * Remove what the site owner asked to have removed — and nothing else.
 *
 * Everything below the opt-in gate runs ONLY when the box in
 * ShapeOptions → Style Settings → Danger zone was ticked and saved. It is off
 * by default, and deactivating the plugin never reaches this file at all, so
 * the ordinary reasons a plugin disappears for a while — an update, a
 * troubleshooting pass, a host migration — cost nothing. The Danger zone
 * lists exactly what this function takes and what it leaves, and offers a
 * one-click JSON backup of the groups and settings first.
 *
 * Deliberately kept even during a full wipe, because both belong to the order
 * history rather than to the plugin:
 *
 *  - Order-line-item meta (`_shapeoptions_options` and the human-readable rows).
 *    Removing it would leave past orders unable to say what was bought.
 *  - Customer files attached to an order (uploads/shapeoptions/orders/).
 *    See shapeoptions_uninstall_remove_uploads().
 *
 * Wrapped in a function so no variable touches the global scope.
 */
function shapeoptions_uninstall_cleanup() {
	
	delete_transient( 'shapeoptions_group_index' );
	delete_transient( 'shapeoptions_dashboard_stats' );

	wp_clear_scheduled_hook( 'shapeoptions_cleanup_uploads' );
	wp_clear_scheduled_hook( 'shapeoptions_cleanup_uploads_continue' );

	if ( ! get_option( 'shapeoptions_delete_data_on_uninstall', false ) ) {
		return;
	}

	$statuses = array_merge(
		array_keys( get_post_stati() ),
		array( 'trash', 'auto-draft' )
	);

	$statuses = array_values( array_unique( $statuses ) );

	do {
		$groups = get_posts(
			array(
				'post_type'      => 'shapeoptions_group',
				'post_status'    => $statuses,
				'posts_per_page' => 100,
				'fields'         => 'ids',
				'no_found_rows'  => true,
			)
		);

		foreach ( $groups as $group_id ) {
			wp_delete_post( $group_id, true );
		}
	} while ( count( $groups ) === 100 );

	shapeoptions_uninstall_remove_uploads();

	delete_option( 'shapeoptions_version' );
	delete_option( 'shapeoptions_install_time' );
	delete_option( 'shapeoptions_style_settings' );
	delete_option( 'shapeoptions_delete_data_on_uninstall' );
}

/**
 * Remove the customer uploads that are the plugin's to remove.
 *
 * `uploads/shapeoptions/tmp/` holds files that were put in a cart and never
 * bought — plugin data, and it goes.
 *
 * `uploads/shapeoptions/orders/` holds files a real order references, and it
 * stays. This is the same decision the cleanup above already makes about
 * `_shapeoptions_options` order-line-item meta: wiping the plugin must not reach into
 * the order history. Deleting these files while keeping the meta that points
 * at them would have been the worst of both — orders still listing an
 * attachment, with nothing behind the link. The Danger zone says plainly that
 * they are kept and where to find them.
 *
 * Once `orders/` is gone or empty, the whole `shapeoptions` folder goes with
 * it, guard files and all — there is then nothing left to guard.
 *
 * Uses WP_Filesystem rather than rmdir()/unlink() so hosts on a non-direct
 * filesystem transport are handled too. Guarded so it can only ever delete
 * inside the uploads basedir, and a no-op when the folder was never created
 * or when no filesystem transport is available (files are then simply left).
 */
function shapeoptions_uninstall_remove_uploads() {
	$uploads = wp_get_upload_dir();
	if ( empty( $uploads['basedir'] ) || ! empty( $uploads['error'] ) ) {
		return;
	}

	$basedir = wp_normalize_path( trailingslashit( realpath( $uploads['basedir'] ) ?: $uploads['basedir'] ) );
	$root    = wp_normalize_path( $basedir . 'shapeoptions' );

	if ( ! is_dir( $root ) ) {
		return;
	}

	$orders = $root . '/orders';

	$keep_orders = is_dir( $orders ) && shapeoptions_uninstall_dir_has_files( $orders );

	$target = $keep_orders ? $root . '/tmp' : $root;

	if ( ! is_dir( $target ) ) {
		return;
	}

	
	$real = wp_normalize_path( realpath( $target ) ?: '' );
	if ( '' === $real || 0 !== strpos( $real . '/', $basedir ) ) {
		return;
	}

	global $wp_filesystem;

	if ( ! $wp_filesystem ) {
		require_once ABSPATH . 'wp-admin/includes/file.php';
		
		if ( ! WP_Filesystem() ) {
			return;
		}
	}

	if ( $wp_filesystem ) {
		$wp_filesystem->delete( $real, true );
	}
}

/**
 * Does a directory contain at least one file, at any depth?
 *
 * @param string $dir Absolute path.
 * @return bool
 */
function shapeoptions_uninstall_dir_has_files( $dir ) {
	foreach ( (array) glob( trailingslashit( $dir ) . '*' ) as $entry ) {
		if ( is_file( $entry ) ) {
			return true;
		}
		if ( is_dir( $entry ) && shapeoptions_uninstall_dir_has_files( $entry ) ) {
			return true;
		}
	}

	return false;
}

if ( is_multisite() ) {
	
	foreach ( get_sites( array( 'fields' => 'ids', 'number' => 0 ) ) as $shapeoptions_blog_id ) {
		switch_to_blog( $shapeoptions_blog_id );
		shapeoptions_uninstall_cleanup();
		restore_current_blog();
	}
	unset( $shapeoptions_blog_id );
} else {
	shapeoptions_uninstall_cleanup();
}