<?php
/**
 * Breadcrumbs — semantic, RTL/LTR safe, Woo-aware, SEO-friendly.
 *
 * Data: array of ['label'=>string,'url'=>string|null,'current'=>bool]
 * If $args['items'] not provided, auto-builds from WP/WC context.
 *
 * @package XShop
 */

declare(strict_types=1);

defined('ABSPATH') || exit;

$args = wp_parse_args($args ?? [], ['items' => null]);
$items = $args['items'];

if ($items === null) {
    $items = [];
    // Home.
    $items[] = ['label' => esc_html__('Home', 'xshop'), 'url' => home_url('/'), 'current' => false];

    if (is_front_page()) {
        // Front page is current; keep only home as current.
        $items[0]['current'] = true;
        $items[0]['url'] = null;
    } elseif (function_exists('is_woocommerce') && xshop_has_woocommerce() && (is_woocommerce() || is_cart() || is_checkout() || is_account_page())) {
        // Delegate to Woo breadcrumb if available, but provide fallback.
        if (function_exists('is_shop') && is_shop()) {
            $items[] = ['label' => esc_html__('Shop', 'xshop'), 'url' => null, 'current' => true];
        } elseif (function_exists('is_product_category') && is_product_category()) {
            $shopUrl = function_exists('wc_get_page_permalink') ? wc_get_page_permalink('shop') : home_url('/');
            $items[] = ['label' => esc_html__('Shop', 'xshop'), 'url' => $shopUrl, 'current' => false];
            $term = get_queried_object();
            if ($term instanceof WP_Term) {
                $items[] = ['label' => $term->name, 'url' => null, 'current' => true];
            }
        } elseif (function_exists('is_product') && is_product()) {
            $shopUrl = function_exists('wc_get_page_permalink') ? wc_get_page_permalink('shop') : home_url('/');
            $items[] = ['label' => esc_html__('Shop', 'xshop'), 'url' => $shopUrl, 'current' => false];
            $items[] = ['label' => get_the_title(), 'url' => null, 'current' => true];
        } elseif (function_exists('is_cart') && is_cart()) {
            $items[] = ['label' => esc_html__('Cart', 'xshop'), 'url' => null, 'current' => true];
        } elseif (function_exists('is_checkout') && is_checkout()) {
            $items[] = ['label' => esc_html__('Checkout', 'xshop'), 'url' => null, 'current' => true];
        } elseif (function_exists('is_account_page') && is_account_page()) {
            $items[] = ['label' => esc_html__('My Account', 'xshop'), 'url' => null, 'current' => true];
        }
    } elseif (is_home()) {
        $postsPage = get_option('page_for_posts');
        $label = $postsPage ? get_the_title((int) $postsPage) : esc_html__('Blog', 'xshop');
        $items[] = ['label' => $label, 'url' => null, 'current' => true];
    } elseif (is_category() || is_tag() || is_tax()) {
        $term = get_queried_object();
        if ($term instanceof WP_Term) {
            $items[] = ['label' => $term->name, 'url' => null, 'current' => true];
        }
    } elseif (is_search()) {
        $items[] = ['label' => sprintf(esc_html__('Search: %s', 'xshop'), get_search_query()), 'url' => null, 'current' => true];
    } elseif (is_404()) {
        $items[] = ['label' => esc_html__('Not Found', 'xshop'), 'url' => null, 'current' => true];
    } elseif (is_singular()) {
        $postType = get_post_type();
        if ($postType && $postType !== 'post' && $postType !== 'page') {
            $obj = get_post_type_object($postType);
            if ($obj) {
                $items[] = ['label' => $obj->labels->name, 'url' => null, 'current' => false];
            }
        } elseif ($postType === 'post') {
            $cat = get_the_category();
            if (!empty($cat[0])) {
                $items[] = ['label' => $cat[0]->name, 'url' => get_category_link($cat[0]->term_id), 'current' => false];
            }
        }
        $items[] = ['label' => get_the_title(), 'url' => null, 'current' => true];
    } elseif (is_archive()) {
        $items[] = ['label' => get_the_archive_title(), 'url' => null, 'current' => true];
    }

    // Mark last as current if none marked.
    $hasCurrent = false;
    foreach ($items as $it) { if (!empty($it['current'])) { $hasCurrent = true; break; } }
    if (!$hasCurrent && count($items) > 0) {
        $items[count($items) - 1]['current'] = true;
        $items[count($items) - 1]['url'] = null;
    }
}

// Never break if empty.
if (empty($items)) { return; }

// Allow SEO plugins / child themes to filter.
$items = apply_filters('xshop_breadcrumbs_items', $items);
if (empty($items) || !is_array($items)) { return; }
?>
<nav class="xshop-breadcrumbs" aria-label="<?php esc_attr_e('Breadcrumb', 'xshop'); ?>">
  <ol>
    <?php foreach ($items as $item):
        $label = isset($item['label']) ? (string) $item['label'] : '';
        if ($label === '') { continue; }
        $isCurrent = !empty($item['current']);
        $url = isset($item['url']) ? (string) $item['url'] : '';
    ?>
      <li>
        <?php if ($isCurrent || $url === ''): ?>
          <span aria-current="page"><?php echo esc_html($label); ?></span>
        <?php else: ?>
          <a href="<?php echo esc_url($url); ?>"><?php echo esc_html($label); ?></a>
        <?php endif; ?>
      </li>
    <?php endforeach; ?>
  </ol>
</nav>