<?php
/**
 * Fired when the plugin is uninstalled.
 *
 * @package Marn_Easy_Migrate
 */

// If uninstall not called from WordPress, exit.
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
	exit;
}

// Delete options and transients created by the plugin.
delete_option( 'wpzm_activated_at' );
delete_option( 'wpzm_secret_salt' );
delete_option( 'wpzm_export_active' );
delete_option( 'wpzm_import_progress' );
delete_transient( 'wpzm_last_cleanup' );

/**
 * Recursively delete a directory (plugin files are not loaded during uninstall).
 *
 * @param string $dir Directory path.
 * @return void
 */
function wpzm_uninstall_delete_dir( $dir ) {
	if ( ! function_exists( 'WP_Filesystem' ) ) {
		require_once ABSPATH . 'wp-admin/includes/file.php';
	}
	WP_Filesystem();
	global $wp_filesystem;
	if ( $wp_filesystem ) {
		$wp_filesystem->delete( $dir, true );
		return;
	}

	$items = @scandir( $dir );
	if ( false === $items ) {
		return;
	}
	foreach ( $items as $item ) {
		if ( '.' === $item || '..' === $item ) {
			continue;
		}
		$path = $dir . DIRECTORY_SEPARATOR . $item;
		if ( is_dir( $path ) && ! is_link( $path ) ) {
			wpzm_uninstall_delete_dir( $path );
		} else {
			wp_delete_file( $path );
		}
	}
	// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir
	@rmdir( $dir );
}

/**
 * Clean temporary directories and files created by the plugin inside wp_upload_dir().
 *
 * @return void
 */
function wpzm_uninstall_cleanup() {
	$upload_dir    = wp_upload_dir();
	$dirs_to_check = array();

	if ( ! empty( $upload_dir['basedir'] ) && is_dir( $upload_dir['basedir'] ) ) {
		$upload_items = @scandir( $upload_dir['basedir'] );
		if ( false !== $upload_items ) {
			foreach ( $upload_items as $u_item ) {
				if ( 0 === strpos( $u_item, 'marn-easy-migrate' ) || 0 === strpos( $u_item, 'marn-zip-backups' ) ) {
					$candidate = trailingslashit( $upload_dir['basedir'] ) . $u_item;
					if ( is_dir( $candidate ) ) {
						$dirs_to_check[] = $candidate;
					}
				}
			}
		}
	}

	// Clean temporary items from all found directories.
	foreach ( array_unique( $dirs_to_check ) as $b_dir ) {
		$items = @scandir( $b_dir );
		if ( false !== $items ) {
			foreach ( $items as $item ) {
				$path = $b_dir . DIRECTORY_SEPARATOR . $item;
				if ( ( 0 === strpos( $item, 'tmp_' ) || 0 === strpos( $item, 'wpzm_tmp_' ) ) && is_dir( $path ) ) {
					wpzm_uninstall_delete_dir( $path );
				} elseif (
					( 0 === strpos( $item, 'tmp_upload_' ) || in_array( $item, array( '.import_progress.php', '.export_active.php', '.import_progress.json', '.export_active.json' ), true ) ) &&
					is_file( $path )
				) {
					wp_delete_file( $path );
				}
			}
		}
	}
}

wpzm_uninstall_cleanup();