<?php

namespace PublishDeck\App\Http\Controllers;

// Exit if accessed directly.
if (! defined('ABSPATH')) {
    exit;
}

use WP_REST_Request;
use WP_REST_Response;

/** GET /terms — read-only category and tag options for the Quick Edit pickers. */
class TermsController extends Controller
{
    /** The taxonomies Quick Edit can pick from; the route accepts nothing else. */
    public const TAXONOMIES = ['category', 'post_tag'];

    public function index(WP_REST_Request $request): WP_REST_Response
    {
        $taxonomy = sanitize_key((string) $request->get_param('taxonomy'));
        if (!in_array($taxonomy, self::TAXONOMIES, true)) {
            $taxonomy = 'category';
        }

        $terms = get_terms([
            'taxonomy'   => $taxonomy,
            'hide_empty' => false,
            'number'     => 500,
            'orderby'    => 'name',
        ]);

        $termList = [];

        if (!is_wp_error($terms)) {
            foreach ($terms as $term) {
                $termList[] = [
                    'id'     => (int) $term->term_id,
                    'name'   => $term->name,
                    'parent' => (int) $term->parent,
                ];
            }
        }

        return $this->sendSuccess(['taxonomy' => $taxonomy, 'terms' => $termList]);
    }
}