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<?php

defined('ABSPATH') || exit;
class WC_Breadcrumb
{
    protected $crumbs = array();
    public function add_crumb($name, $link = '')
    {
        $this->crumbs[] = array(wp_strip_all_tags($name), $link);
    }
    public function reset()
    {
        $this->crumbs = array();
    }
    public function get_breadcrumb()
    {
        return apply_filters('woocommerce_get_breadcrumb', $this->crumbs, $this);
    }
    public function generate()
    {
        $conditionals = array('is_home', 'is_404', 'is_attachment', 'is_single', 'is_product_category', 'is_product_tag', 'is_shop', 'is_page', 'is_post_type_archive', 'is_category', 'is_tag', 'is_author', 'is_date', 'is_tax');
        if (!is_front_page() && !(is_post_type_archive() && intval(get_option('page_on_front')) === wc_get_page_id('shop')) || is_paged()) {
            foreach ($conditionals as $conditional) {
                if (call_user_func($conditional)) {
                    call_user_func(array($this, 'add_crumbs_' . substr($conditional, 3)));
                    break;
                }
            }
            $this->search_trail();
            $this->paged_trail();
            return $this->get_breadcrumb();
        }
        return array();
    }
    protected function prepend_shop_page()
    {
        $permalinks = wc_get_permalink_structure();
        $shop_page_id = wc_get_page_id('shop');
        $shop_page = get_post($shop_page_id);
        if ($shop_page_id && $shop_page && isset($permalinks['product_base']) && strstr($permalinks['product_base'], '/' . $shop_page->post_name) && intval(get_option('page_on_front')) !== $shop_page_id) {
            $this->add_crumb(get_the_title($shop_page), get_permalink($shop_page));
        }
    }
    protected function add_crumbs_home()
    {
        $this->add_crumb(single_post_title('', false));
    }
    protected function add_crumbs_404()
    {
        $this->add_crumb(__('Error 404', 'woocommerce'));
    }
    protected function add_crumbs_attachment()
    {
        global $post;
        $this->add_crumbs_single($post->post_parent, get_permalink($post->post_parent));
        $this->add_crumb(get_the_title(), get_permalink());
    }
    protected function add_crumbs_single($post_id = 0, $permalink = '')
    {
        if (!$post_id) {
            global $post;
        } else {
            $post = get_post($post_id);
        }
        if (!$permalink) {
            $permalink = get_permalink($post);
        }
        if ('product' === get_post_type($post)) {
            $this->prepend_shop_page();
            $terms = wc_get_product_terms($post->ID, 'product_cat', apply_filters('woocommerce_breadcrumb_product_terms_args', array('orderby' => 'parent', 'order' => 'DESC')));
            if ($terms) {
                $main_term = apply_filters('woocommerce_breadcrumb_main_term', $terms[0], $terms);
                $this->term_ancestors($main_term->term_id, 'product_cat');
                $this->add_crumb($main_term->name, get_term_link($main_term));
            }
        } elseif ('post' !== get_post_type($post)) {
            $post_type = get_post_type_object(get_post_type($post));
            if (!empty($post_type->has_archive)) {
                $this->add_crumb($post_type->labels->singular_name, get_post_type_archive_link(get_post_type($post)));
            }
        } else {
            $cat = current(get_the_category($post));
            if ($cat) {
                $this->term_ancestors($cat->term_id, 'category');
                $this->add_crumb($cat->name, get_term_link($cat));
            }
        }
        $this->add_crumb(get_the_title($post), $permalink);
    }
    protected function add_crumbs_page()
    {
        global $post;
        if ($post->post_parent) {
            $parent_crumbs = array();
            $parent_id = $post->post_parent;
            while ($parent_id) {
                $page = get_post($parent_id);
                $parent_id = $page->post_parent;
                $parent_crumbs[] = array(get_the_title($page->ID), get_permalink($page->ID));
            }
            $parent_crumbs = array_reverse($parent_crumbs);
            foreach ($parent_crumbs as $crumb) {
                $this->add_crumb($crumb[0], $crumb[1]);
            }
        }
        $this->add_crumb(get_the_title(), get_permalink());
        $this->endpoint_trail();
    }
    protected function add_crumbs_product_category()
    {
        $current_term = $GLOBALS['wp_query']->get_queried_object();
        $this->prepend_shop_page();
        $this->term_ancestors($current_term->term_id, 'product_cat');
        $this->add_crumb($current_term->name, get_term_link($current_term, 'product_cat'));
    }
    protected function add_crumbs_product_tag()
    {
        $current_term = $GLOBALS['wp_query']->get_queried_object();
        $this->prepend_shop_page();
        $this->add_crumb(sprintf(__('Products tagged &ldquo;%s&rdquo;', 'woocommerce'), $current_term->name), get_term_link($current_term, 'product_tag'));
    }
    protected function add_crumbs_shop()
    {
        if (intval(get_option('page_on_front')) === wc_get_page_id('shop')) {
            return;
        }
        $_name = wc_get_page_id('shop') ? get_the_title(wc_get_page_id('shop')) : '';
        if (!$_name) {
            $product_post_type = get_post_type_object('product');
            $_name = $product_post_type->labels->name;
        }
        $this->add_crumb($_name, get_post_type_archive_link('product'));
    }
    protected function add_crumbs_post_type_archive()
    {
        $post_type = get_post_type_object(get_post_type());
        if ($post_type) {
            $this->add_crumb($post_type->labels->name, get_post_type_archive_link(get_post_type()));
        }
    }
    protected function add_crumbs_category()
    {
        $this_category = get_category($GLOBALS['wp_query']->get_queried_object());
        if (0 !== intval($this_category->parent)) {
            $this->term_ancestors($this_category->term_id, 'category');
        }
        $this->add_crumb(single_cat_title('', false), get_category_link($this_category->term_id));
    }
    protected function add_crumbs_tag()
    {
        $queried_object = $GLOBALS['wp_query']->get_queried_object();
        $this->add_crumb(sprintf(__('Posts tagged &ldquo;%s&rdquo;', 'woocommerce'), single_tag_title('', false)), get_tag_link($queried_object->term_id));
    }
    protected function add_crumbs_date()
    {
        if (is_year() || is_month() || is_day()) {
            $this->add_crumb(get_the_time('Y'), get_year_link(get_the_time('Y')));
        }
        if (is_month() || is_day()) {
            $this->add_crumb(get_the_time('F'), get_month_link(get_the_time('Y'), get_the_time('m')));
        }
        if (is_day()) {
            $this->add_crumb(get_the_time('d'));
        }
    }
    protected function add_crumbs_tax()
    {
        $this_term = $GLOBALS['wp_query']->get_queried_object();
        $taxonomy = get_taxonomy($this_term->taxonomy);
        $this->add_crumb($taxonomy->labels->name);
        if (0 !== intval($this_term->parent)) {
            $this->term_ancestors($this_term->term_id, $this_term->taxonomy);
        }
        $this->add_crumb(single_term_title('', false), get_term_link($this_term->term_id, $this_term->taxonomy));
    }
    protected function add_crumbs_author()
    {
        global $author;
        $userdata = get_userdata($author);
        $this->add_crumb(sprintf(__('Author: %s', 'woocommerce'), $userdata->display_name));
    }
    protected function term_ancestors($term_id, $taxonomy)
    {
        $ancestors = get_ancestors($term_id, $taxonomy);
        $ancestors = array_reverse($ancestors);
        foreach ($ancestors as $ancestor) {
            $ancestor = get_term($ancestor, $taxonomy);
            if (!is_wp_error($ancestor) && $ancestor) {
                $this->add_crumb($ancestor->name, get_term_link($ancestor));
            }
        }
    }
    protected function endpoint_trail()
    {
        $action = isset($_GET['action']) ? sanitize_text_field(wp_unslash($_GET['action'])) : '';
        $endpoint = is_wc_endpoint_url() ? WC()->query->get_current_endpoint() : '';
        $endpoint_title = $endpoint ? WC()->query->get_endpoint_title($endpoint, $action) : '';
        if ($endpoint_title) {
            $this->add_crumb($endpoint_title);
        }
    }
    protected function search_trail()
    {
        if (is_search()) {
            $this->add_crumb(sprintf(__('Search results for &ldquo;%s&rdquo;', 'woocommerce'), get_search_query()), remove_query_arg('paged'));
        }
    }
    protected function paged_trail()
    {
        if (get_query_var('paged') && 'subcategories' !== woocommerce_get_loop_display_mode()) {
            $this->add_crumb(sprintf(__('Page %d', 'woocommerce'), get_query_var('paged')));
        }
    }
}