namespace ImageOptimization\Classes\Migration;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
public const IMAGE_OPTIMIZER_MIGRATION_KEY = 'image_optimizer_migrations';
private const INITIAL_META_VALUE = [
'last_wp_version_run' => null,
'migrations_passed' => [],
private array $migration_meta;
public function get_last_run(): ?string {
return $this->migration_meta['last_run'];
public function set_last_run( DateTime $date ): Migration_Meta {
$this->migration_meta['last_run'] = $date;
public function get_last_wp_version(): string {
return $this->migration_meta['last_wp_version_run'];
public function set_last_wp_version( ?string $version ): Migration_Meta {
$this->migration_meta['last_wp_version_run'] = get_bloginfo( 'version' );
$this->migration_meta['last_wp_version_run'] = $version;
public function get_migrations_passed(): array {
return $this->migration_meta['migrations_passed'];
public function add_migration_passed( string $migration ): Migration_Meta {
$this->migration_meta['migrations_passed'][] = $migration;
public function delete(): bool {
return delete_option( self::IMAGE_OPTIMIZER_MIGRATION_KEY );
public function save(): Migration_Meta {
update_option( self::IMAGE_OPTIMIZER_MIGRATION_KEY, $this->migration_meta, false );
private function query_meta(): void {
$meta = get_option( self::IMAGE_OPTIMIZER_MIGRATION_KEY, [] );
$this->migration_meta = $meta ? array_replace_recursive( self::INITIAL_META_VALUE, $meta ) : self::INITIAL_META_VALUE;
public function __construct() {