<?php
// Central version source-of-truth for AAS.
// Reads from the plugin header (same value WordPress shows on the Plugins screen)
// and caches the result for this request.

if ( ! defined( 'ABSPATH' ) ) { exit; }

if ( ! class_exists( 'AIAAS_Version' ) ) {
	class AIAAS_Version {
		private static $cached = null;

		public static function get(): string {
			if ( self::$cached !== null ) {
				return (string) self::$cached;
			}

			$main_file = defined( 'AIAAS_MAIN_FILE' ) ? AIAAS_MAIN_FILE : null;
			if ( ! $main_file || ! is_string( $main_file ) || ! file_exists( $main_file ) ) {
				self::$cached = '0.0.0';
				return (string) self::$cached;
			}

			// Lightweight header read (does not require wp-admin includes).
			$hdr = get_file_data( $main_file, array( 'Version' => 'Version' ), 'plugin' );
			$ver = '';
			if ( is_array( $hdr ) && ! empty( $hdr['Version'] ) ) {
				$ver = trim( (string) $hdr['Version'] );
			}

			// Fallback: keep legacy constant if present.
			if ( $ver === '' && defined( 'AIAAS_VERSION' ) ) {
				$ver = trim( (string) AIAAS_VERSION );
			}

			self::$cached = ( $ver !== '' ) ? $ver : '0.0.0';
			return (string) self::$cached;
		}
	}
}