<?php
if ( ! defined( 'ABSPATH' ) ) { exit; }

/**
 * Export Service (foundation)
 * Single path for export build later: validate -> build -> store -> return.
 */
class AIAAS_Export_Service {

    public function formats() {
        return AIAAS_Export_Registry::all();
    }

    public function can_export( $format_key ) {
        $fmt = AIAAS_Export_Registry::get( $format_key );
        if ( ! $fmt ) return false;

        // Feature gating (future): if registry exists, honor it.
        if ( class_exists( 'AIAAS_Feature_Registry' ) && ! empty( $fmt['feature'] ) ) {
            return AIAAS_Feature_Registry::active( $fmt['feature'] );
        }
        return true;
    }

    /**
     * Placeholder build method (not yet wired to UI).
     */
    public function build( $format_key, $context = array() ) {
        $fmt = AIAAS_Export_Registry::get( $format_key );
        if ( ! $fmt || empty( $fmt['handler'] ) || ! is_callable( $fmt['handler'] ) ) {
            return new WP_Error( 'aiaas_export_no_handler', __( 'Export handler not registered.', 'aas-ai-authors-studio' ) );
        }
        return call_user_func( $fmt['handler'], $context );
    }
}