<?php
namespace MazlanHalim\IntelliLanz\Detection;

use MazlanHalim\IntelliLanz\Graph\Node;

final class ThemeDetector implements DetectorInterface {
    public function detect(): array {
        $active = get_stylesheet();
        $template = get_template();
        $nodes = array();
        // Include broken installed themes as discovery data, without health judgments.
        foreach ( wp_get_themes( array( 'errors' => null ) ) as $stylesheet => $theme ) {
            $name = sanitize_text_field( $theme->get( 'Name' ) );
            $parent = sanitize_text_field( $theme->get( 'Template' ) );
            $metadata = array(
                'stylesheet' => $stylesheet,
                'version' => sanitize_text_field( $theme->get( 'Version' ) ),
                'author' => sanitize_text_field( $theme->get( 'Author' ) ),
                'active' => $stylesheet === $active,
                'parent_stylesheet' => $parent !== '' ? $parent : null,
                'is_active_parent' => $active !== $template && $stylesheet === $template,
            );
            $nodes[] = new Node( 'theme:' . $stylesheet, 'theme', 'themes', $name !== '' ? $name : $stylesheet, 'unknown', 0, $metadata );
        }
        return array( 'nodes' => $nodes, 'edges' => array() );
    }
}