<?php

declare(strict_types=1);

namespace Aivie\WooCommerce\Admin;

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

use Aivie\WooCommerce\Mapper\MetaSanitizer;
use Aivie\WooCommerce\Support\Options;

class OrderItemMetaSampleProvider
{
    /**
     * @return array<string, mixed>
     */
    public function samples(int $limit = 50): array
    {
        if (! function_exists('wc_get_orders')) {
            return [];
        }

        $orders = wc_get_orders([
            'limit'   => max(1, $limit),
            'orderby' => 'date',
            'order'   => 'DESC',
            'return'  => 'objects',
        ]);

        if (! is_array($orders)) {
            return [];
        }

        $samples = [];
        foreach ($orders as $order) {
            if (! $order instanceof \WC_Order) {
                continue;
            }

            foreach ($order->get_items() as $item) {
                if (! $item instanceof \WC_Order_Item_Product) {
                    continue;
                }

                foreach ($item->get_meta_data() as $metaData) {
                    if (! is_object($metaData) || ! isset($metaData->key)) {
                        continue;
                    }

                    $key = (string) $metaData->key;
                    if (isset($samples[$key]) || MetaSanitizer::isSensitiveKey($key)) {
                        continue;
                    }

                    if (! Options::getBool(Options::INCLUDE_PRIVATE_META) && str_starts_with($key, '_')) {
                        continue;
                    }

                    $samples[$key] = MetaSanitizer::sanitizeValue(
                        $metaData->value ?? '',
                        Options::getInt(Options::MAX_META_VALUE_LENGTH) ?: 1000
                    );
                }
            }
        }

        ksort($samples, SORT_NATURAL | SORT_FLAG_CASE);

        return $samples;
    }
}