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<?php

// Do not allow directly accessing this file.
if ( ! defined( 'ABSPATH' ) ) {
	exit( 'Direct script access denied.' );
}

class Pisces_Breadcrumbs {

	/**
	 * A reference to an instance of this class.
	 *
	 * @since 1.0.0
	 * @var   object
	 */
	private static $instance = null;

	/**
	 * Indexed array of breadcrumb trail items.
	 *
	 * @since 1.0.0
	 * @var   array
	 */
	public $items = array();

	/**
	 * Breadcrumb arguments.
	 *
	 * @since 1.0.0
	 * @var   array
	 */
	public $args = array();

	/**
	 * Page title.
	 *
	 * @since 1.0.0
	 * @var   array
	 */
	public $page_title = null;
	public $_page_title = null;

	/**
	 * Breadcrumbs CSS.
	 *
	 * @since 1.0.0
	 * @var   array
	 */
	public $css = array(
		'module'    => 'la-breadcrumbs',
		'content'   => 'la-breadcrumb-content',
		'wrap'      => 'la-breadcrumb-wrap',
		'browse'    => 'la-breadcrumb-browse',
		'item'      => 'la-breadcrumb-item',
		'separator' => 'la-breadcrumb-item-sep',
		'link'      => 'la-breadcrumb-item-link',
		'target'    => 'la-breadcrumb-item-target',
	);

	/**
	 * Check if Breadcrumbs class was extended.
	 *
	 * @since 1.0.0
	 * @var   boolean
	 */
	public $is_extend = false;

	/**
	 * Constructor of class.
	 */
	function __construct( $args = array() ) {

		$defaults = array(
			'separator'         => '/',
			'before'            => '',
			'after'             => '',
			'show_mobile'       => false,
			'show_tablet'       => true,
			'wrapper_format'    => '<div>%2$s</div>',
			'page_title_format' => '<header><h3 class="page-title h3">%s</h3></header>',
			'item_format'       => '<div class="%2$s">%1$s</div>',
			'home_format'       => '<a href="%4$s" class="%2$s is-home" rel="home" title="%3$s">%1$s</a>',
			'link_format'       => '<a href="%4$s" class="%2$s" rel="tag" title="%3$s">%1$s</a>',
			'target_format'     => '<span class="%2$s">%1$s</span>',
			'show_on_front'     => true,
			'network'           => false,
			'show_title'        => true,
			'show_items'        => true,
			'show_browse'       => false,
			'echo'              => true,
			'labels'            => array(),
			'date_labels'       => array(),
			'action'            => 'pisces/action/breadcrumbs/render_html',
			'css_namespace'     => array(),
			'path_type'         => 'full', // minified , full
			'post_taxonomy'     => apply_filters(
				'pisces/filter/breadcrumbs/trail_taxonomies',
				array(
					'post'      => 'category',
					'product'	=> 'product_cat'
				)
			),
		);

		$this->args = apply_filters( 'pisces/filter/breadcrumbs/args', wp_parse_args( $args, $defaults ) );

		if ( isset( $this->args['css_namespace'] ) && ! empty( $this->args['css_namespace'] ) ) {
			$this->css = wp_parse_args( $this->args['css_namespace'], $this->css );
		}
		if ( ! empty( $args['labels'] ) ) {
			$this->args['labels'] = wp_parse_args( $args['labels'], $this->default_labels() );
		} else {
			$this->args['labels'] = $this->default_labels();
		}

		if ( ! empty( $args['date_labels'] ) ) {
			$this->args['date_labels'] = wp_parse_args( $args['date_labels'], $this->default_date_labels() );
		} else {
			$this->args['date_labels'] = $this->default_date_labels();
		}

		if ( is_front_page() && false === $this->args['show_on_front'] ) {
			return;
		}

		$this->build_trail();

		if ( ! $this->is_extend ) {
			add_action( $this->args['action'], array( $this, 'get_trail' ) );
		}

	}

	/**
	 * Formats and outputs the breadcrumb trail.
	 *
	 * @since 1.0.0
	 */
	public function get_trail() {

		if ( is_front_page() && false === $this->args['show_on_front'] ) {
			return;
		}

		$breadcrumb = $this->get_items();
		$title      = $this->get_title();

		$wrapper_classes = array(
			esc_attr( $this->css['module'] )
		);

		if ( false === $this->args['show_mobile'] ) {
			$wrapper_classes[] = 'hidden-xs';
		}

		if ( false === $this->args['show_tablet'] ) {
			$wrapper_classes[] = 'hidden-sm';
		}

		$wrapper_classes = apply_filters( 'pisces/filter/breadcrumbs/wrapper_classes', $wrapper_classes );
		$wrapper_classes = array_unique( $wrapper_classes );
		$wrapper_classes = array_map( 'sanitize_html_class', $wrapper_classes );
		$wrapper_css     = implode( ' ', $wrapper_classes );

		/* Open the breadcrumb trail containers. */
		$result = "\n\t\t" . '<div class="' . esc_attr( $wrapper_css ) . '">';

		$result .= sprintf( $this->args['wrapper_format'], $title, $breadcrumb );

		/* Close the breadcrumb trail containers. */
		$result .= "\n\t\t" . '</div>';

		if ( true === $this->args['echo'] ) {
			echo $result;
		} else {
			return $result;
		}

	}

	/**
	 * Get breacrumbs list items.
	 *
	 * @since 1.0.0
	 */
	public function get_items() {

		if ( false == $this->args['show_items'] ) {
			return;
		}

		$breadcrumb = '';

		/* Connect the breadcrumb trail if there are items in the trail. */
		if ( empty( $this->items ) && ! is_array( $this->items ) ) {
			return;
		}

		if ( is_front_page() && false === $this->args['show_on_front'] ) {
			return;
		}

		/* Make sure we have a unique array of items. */

		$this->items = array_unique( $this->items );

		if ( $this->args['before'] ) {
			$breadcrumb .= $this->args['before'];
		}

		/* Open the breadcrumb trail containers. */
		$breadcrumb .= "\n\t\t" . '<div class="' . esc_attr( $this->css['content'] ) . '">';

		/* Add 'browse' label if it should be shown. */
		if ( true === $this->args['show_browse'] && ! empty( $this->args['labels']['browse'] ) ) {
			$browse      = $this->prepare_label( $this->args['labels']['browse'] );
			$breadcrumb .= "\n\t\t\t" . '<div class="' . esc_attr( $this->css['browse'] ) . '">' . $browse . '</div> ';
		}

		$breadcrumb .= "\n\t\t" . '<div class="' . esc_attr( $this->css['wrap'] ) . '">';

		/* Format the separator. */
		$separator = ! empty( $this->args['separator'] )
			? $this->args['separator']
			: '/';

		$separator = $this->prepare_label( $separator );
		$separator = '<div class="' . esc_attr( $this->css['separator'] ) . '">' . $separator . '</div>';
		$separator = sprintf( $this->args['item_format'], $separator, $this->css['item'] );

		/* Join the individual trail items into a single string. */
		$breadcrumb .= join( "\n\t\t\t {$separator} ", $this->items );

		$breadcrumb .= "\n\t\t" . '</div>';

		$breadcrumb .= "\n\t\t" . '</div>';

		if ( $this->args['after'] ) {
			$breadcrumb .= $this->args['after'];
		}

		/* Allow developers to filter the breadcrumb trail HTML and page title. */
		$breadcrumb = apply_filters( 'pisces/filter/breadcrumbs/trail', $breadcrumb, $this->args );

		return $breadcrumb;

	}

	/**
	 * Get page title.
	 *
	 * @since 1.0.0
	 */
	public function get_title() {

		if (! $this->_page_title ) {
			return;
		}

		$title = apply_filters(
			'pisces/filter/page_title',
			sprintf( $this->args['page_title_format'], $this->_page_title ), $this->args
		);

		return $title;

	}

	/**
	 * Returns an array of the default labels.
	 *
	 * @since 1.0.0
	 */
	public function default_date_labels() {
		$labels = array(
			'archive_minute_hour' => 'g:i a', // minute and hour archives time format
			'archive_minute'      => 'i', // minute archives time format
			'archive_hour'        => 'g a', // hour archives time format
			'archive_year'        => 'Y', // yearly archives date format
			'archive_month'       => 'F', // monthly archives date format
			'archive_day'         => 'j', // daily archives date format
			'archive_week'        => 'W', // weekly archives date format
		);

		return $labels;
	}

	/**
	 * Returns an array of the default labels.
	 *
	 * @since 1.0.0
	 */
	public function default_labels() {

		$labels = array(
			'browse'              => esc_html_x( 'Browse:', 'front-view', 'pisces' ),
			'home'                => $this->home_title(),
			'error_404'           => esc_html_x( '404 Not Found', 'front-view', 'pisces' ),
			'archives'            => esc_html_x( 'Archives', 'front-view', 'pisces' ),
			'search'              => esc_html_x( 'Search results for &#8220;%s&#8221;', 'front-view', 'pisces' ),
			'paged'               => esc_html_x( 'Page %s', 'front-view', 'pisces' ),
			'archive_minute'      => esc_html_x( 'Minute %s', 'front-view', 'pisces' ),
			'archive_week'        => esc_html_x( 'Week %s', 'front-view', 'pisces' ),

			/* "%s" is replaced with the translated date/time format. */
			'archive_minute_hour' => '%s',
			'archive_hour'        => '%s',
			'archive_day'         => '%s',
			'archive_month'       => '%s',
			'archive_year'        => '%s',
		);

		return $labels;
	}

	/**
	 * Returns home title
	 *
	 * @return string
	 */
	public function home_title() {

		$title            = esc_html_x( 'Home', 'front-view', 'pisces' );
		$use_custom_title = apply_filters( 'pisces/filter/breadcrumbs/custom_home_title', false );

		if ( $use_custom_title ) {

			$page_on_front_id = get_option( 'page_on_front' );
			$page_title       = false;

			if ( $page_on_front_id ) {
				$page_title = get_the_title( $page_on_front_id );
			}

			if ( ! empty( $page_title ) ) {
				$title = $page_title;
			}
		}

		return $this->prepare_label( $title );
	}

	/**
	 * Build breadcrumbs trail items array.
	 *
	 * @since 1.0.0
	 */
	public function build_trail() {

		// Break trail building, if use custom trailing for this page
		$custom_trail = apply_filters( 'pisces/filter/breadcrumbs/custom_trail', false, $this->args );
		if ( is_array( $custom_trail ) && ! empty( $custom_trail ) ) {
			$this->items      = $custom_trail['items'];
			$this->page_title = $custom_trail['page_title'];
			return;
		}

		if ( is_front_page() ) {

			// if we on front page
			$this->add_front_page();

		} else {

			// do this for all other pages
			$this->add_network_home_link();
			$this->add_site_home_link();

			// add blog page related items
			if ( is_home() ) {

				$this->add_blog_page();

			} elseif ( is_singular() ) {

				// add single page/post items
				$this->add_singular_items();

			} elseif ( is_archive() ) {

				// is is archive page
				if ( is_post_type_archive() ) {
					$this->add_post_type_archive_items();

				} elseif ( is_category() || is_tag() || is_tax() ) {
					$this->add_term_archive_items();

				} elseif ( is_author() ) {
					$this->add_user_archive_items();

				} elseif ( get_query_var( 'minute' ) && get_query_var( 'hour' ) ) {
					$this->add_minute_hour_archive_items();

				} elseif ( get_query_var( 'minute' ) ) {
					$this->add_minute_archive_items();

				} elseif ( get_query_var( 'hour' ) ) {
					$this->add_hour_archive_items();

				} elseif ( is_day() ) {
					$this->add_day_archive_items();

				} elseif ( get_query_var( 'w' ) ) {
					$this->add_week_archive_items();

				} elseif ( is_month() ) {
					$this->add_month_archive_items();

				} elseif ( is_year() ) {
					$this->add_year_archive_items();

				} else {
					$this->add_default_archive_items();

				}
			} elseif ( is_search() ) {
				/* If viewing a search results page. */
				$this->add_search_items();
			} elseif ( is_404() ) {
				/* If viewing the 404 page. */
				$this->add_404_items();
			}
		}

		/* Add paged items if they exist. */
		$this->add_paged_items();

		/**
		 * Filter final items array
		 *
		 * @since 1.0.0
		 * @since 1.1.5 Added 3rd parameter $this.
		 *
		 * @param array $this->items Current items array.
		 * @param array $this->args  Current instance arguments array.
		 * @param array $this        Current instance.
		 */
		$this->items = apply_filters( 'pisces/filter/breadcrumbs/items', $this->items, $this->args, $this );

	}

	/**
	 * Add trail item int array.
	 *
	 * @since 1.0.0
	 * @since 1.1.5 $prepend parameter.
	 *
	 * @param string $format Item format to add.
	 * @param string $label  Item label.
	 * @param string $url    Item URL.
	 * @param string $class  Item CSS class.
	 */
	public function _add_item( $format = 'link_format', $label, $url = '', $class = '', $prepend = false, $is_page_title = false ) {

		$title = esc_attr( wp_strip_all_tags( $label ) );
		$css   = ( 'target_format' == $format ) ? 'target' : 'link';

		if ( $class ) {
			$class .= ' ' . $this->css[ $css ];
		} else {
			$class = $this->css[ $css ];
		}

		$item   = sprintf( $this->args[ $format ], $label, $class, $title, $url );
		$result = sprintf( $this->args['item_format'], $item, esc_attr( $this->css['item'] ) );

		if ( 'target_format' == $format ) {
			if(!isset($this->_count_target_format)){
				$this->_count_target_format = 1;
			}else{
				$this->_count_target_format++;
			}

			$this->page_title = $label;
			if($is_page_title){
				$this->_page_title = $label;
			}
		}

		if ( true === $prepend ) {
			array_unshift( $this->items, $result );
		} else {
			if((isset($this->_count_target_format) && $this->_count_target_format == 2)){
				array_pop($this->items);
			}
			$this->items[] = $result;
		}
	}

	/**
	 * Add front items based on $wp_rewrite->front.
	 *
	 * @since 1.0.0
	 */
	public function add_rewrite_front_items() {

		global $wp_rewrite;

		if ( $wp_rewrite->front ) {
			$this->add_path_parents( $wp_rewrite->front );
		}
	}

	/**
	 * Adds the page/paged number to the items array.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function add_paged_items() {

		/* If viewing a paged singular post. */
		if ( is_singular() && 1 < get_query_var( 'page' ) ) {
			$label = sprintf(
				$this->args['labels']['paged'],
				number_format_i18n( absint( get_query_var( 'page' ) ) )
			);
			$this->_add_item( 'target_format', $label );

		} elseif ( is_paged() ) {
			/* If viewing a paged archive-type page. */
			$label = sprintf(
				$this->args['labels']['paged'],
				number_format_i18n( absint( get_query_var( 'paged' ) ) )
			);
			$this->_add_item( 'target_format', $label );
		}

	}

	/**
	 * Get parent posts by path. Currently, this method only supports getting parents of the 'page'
	 * post type.  The goal of this function is to create a clear path back to home given what would
	 * normally be a "ghost" directory.  If any page matches the given path, it'll be added.
	 *
	 * @since 1.0.0
	 *
	 * @param string $path The path (slug) to search for posts by.
	 */
	function add_path_parents( $path ) {

		/* Trim '/' off $path in case we just got a simple '/' instead of a real path. */
		$path = trim( $path, '/' );

		/* If there's no path, return. */
		if ( empty( $path ) ) {
			return;
		}

		// process default permalinks by own way
		if ( in_array( $path, array( 'tag', 'category', 'author' ) ) ) {
			return;
		}

		/* Get parent post by the path. */
		$post = get_page_by_path( $path );

		if ( ! empty( $post ) ) {
			$this->add_post_parents( $post->ID );
		} elseif ( is_null( $post ) ) {

			/* Separate post names into separate paths by '/'. */
			$path = trim( $path, '/' );
			preg_match_all( '/\/.*?\z/', $path, $matches );

			/* If matches are found for the path. */
			if ( isset( $matches ) ) {

				/* Reverse the array of matches to search for posts in the proper order. */
				$matches = array_reverse( $matches );

				/* Loop through each of the path matches. */
				foreach ( $matches as $match ) {

					/* If a match is found. */
					if ( isset( $match[0] ) ) {

						/* Get the parent post by the given path. */
						$path = str_replace( $match[0], '', $path );
						$post = get_page_by_path( trim( $path, '/' ) );

						/* If a parent post is found, set the $post_id and break out of the loop. */
						if ( ! empty( $post ) && 0 < $post->ID ) {
							$this->add_post_parents( $post->ID );
							break;
						}
					}
				}
			}
		}
	}

	/**
	 * Build front page breadcrumb items.
	 *
	 * @since 1.0.0
	 */
	public function add_front_page() {

		// do nothing if 'show_on_front' arg not true
		if ( true !== $this->args['show_on_front'] ) {
			return;
		}

		// always add network home link (if is multisite)
		$this->add_network_home_link();

		// if is paged front page - add home link
		if ( is_paged() || ( is_singular() && 1 < get_query_var( 'page' ) ) ) {

			$this->add_site_home_link();

		} else {

			$label = ( is_multisite() && true === $this->args['network'] )
				? get_bloginfo( 'name' )
				: $this->args['labels']['home'];

			$this->_add_item( 'target_format', $label, '', '', false, true );
		}

	}

	/**
	 * Add network home link for multisite.
	 * Check if is multisite and add link to parent site to breadcrumb items.
	 *
	 * @since 1.0.0
	 */
	public function add_network_home_link() {

		// do nothing if network support diasabled in args
		if ( true !== $this->args['network'] ) {
			return;
		}

		if ( ! is_multisite() ) {
			return;
		}

		if ( ! is_main_site() ) {
			return;
		}

		$url   = esc_url( network_home_url() );
		$label = $this->args['labels']['home'];

		$this->_add_item( 'home_format', $label, $url );

		//$this->_page_title = $label;

	}

	/**
	 * Add site home link.
	 * Add site home link if is paged front page.
	 *
	 * @since 1.0.0
	 */
	public function add_site_home_link() {

		$format = ( is_multisite() && ! is_main_site() && true === $this->args['network'] )
			? 'link_format'
			: 'home_format';

		$url   = esc_url( home_url( '/' ) );
		$label = ( is_multisite() && ! is_main_site() && true === $this->args['network'] )
			? get_bloginfo( 'name' )
			: $this->args['labels']['home'];

		$this->_add_item( $format, $label, $url );
		//$this->_page_title = $label;
	}

	/**
	 * Add blog page breadcrumbs item.
	 *
	 * @since 1.0.0
	 */
	public function add_blog_page() {

		// Get the post ID and post.
		$post_id = get_queried_object_id();
		$post    = get_page( $post_id );

		// If the post has parents, add them to the trail.
		if ( 0 < $post->post_parent ) {
			$this->add_post_parents( $post->post_parent );
		}

		$url   = get_permalink( $post_id );
		$label = get_the_title( $post_id );

		if ( is_paged() ) {
			$this->_add_item( 'link_format', $label, $url );
		} elseif ( $label ) {
			$this->_add_item( 'target_format', $label, '');
		}

		$this->_page_title = $label;
	}

	/**
	 * Adds singular post items to the items array.
	 *
	 * @since 1.0.0
	 */
	public function add_singular_items() {

		/* Get the queried post. */
		$post    = get_queried_object();
		$post_id = get_queried_object_id();

		/* If the post has a parent, follow the parent trail. */
		if ( 0 < $post->post_parent ) {
			$this->add_post_parents( $post->post_parent );
		} else {
			/* If the post doesn't have a parent, get its hierarchy based off the post type. */
			$this->add_post_hierarchy( $post_id );
		}

		/* Display terms for specific post type taxonomy if requested. */
		$this->add_post_terms( $post_id );

		$post_title = single_post_title( '', false );

		/* End with the post title. */
		if ( $post_title ) {

			if ( 1 < get_query_var( 'page' ) ) {

				$url   = get_permalink( $post_id );
				$label = $post_title;

				$this->_add_item( 'link_format', $label, $url );

			}

			$label = $post_title;
			$this->_add_item( 'target_format', $label, '', '', false, true );

		}
	}

	/**
	 * Adds a post's terms from a specific taxonomy to the items array.
	 *
	 * @since 1.0.0
	 *
	 * @param int $post_id The ID of the post to get the terms for.
	 */
	public function add_post_terms( $post_id ) {

		if ( 'minified' == $this->args['path_type'] ) {
			return;
		}

		/* Get the post type. */
		$post_type = get_post_type( $post_id );

		/* Add the terms of the taxonomy for this post. */
		if ( ! empty( $this->args['post_taxonomy'][ $post_type ] ) ) {
			add_filter('get_object_terms', 'pisces_exclude_demo_term_in_category');
			$post_terms = wp_get_post_terms( $post_id, $this->args['post_taxonomy'][ $post_type ] );
			remove_filter('get_object_terms', 'pisces_exclude_demo_term_in_category');
			if ( is_array( $post_terms ) && isset( $post_terms[0] ) && is_object( $post_terms[0] ) ) {
				$term_id = $post_terms[0]->term_id;
				$this->add_term_parents( $term_id, $this->args['post_taxonomy'][ $post_type ] );
			}
		}
	}

	/**
	 * Gets post types by slug.  This is needed because the get_post_types() function doesn't exactly
	 * match the 'has_archive' argument when it's set as a string instead of a boolean.
	 *
	 * @since 1.0.0
	 *
	 * @param int $slug The post type archive slug to search for.
	 */
	public function get_post_types_by_slug( $slug ) {

		$return = array();

		$post_types = get_post_types( array(), 'objects' );

		foreach ( $post_types as $type ) {

			if ( $slug === $type->has_archive || ( true === $type->has_archive && $slug === $type->rewrite['slug'] ) ) {
				$return[] = $type;
			}
		}

		return $return;
	}

	/**
	 * Adds the items to the trail items array for taxonomy term archives.
	 *
	 * @since 1.0.0
	 */
	public function add_term_archive_items() {

		global $wp_rewrite;

		/* Get some taxonomy and term variables. */
		$term     = get_queried_object();
		$taxonomy = get_taxonomy( $term->taxonomy );

		/* If there are rewrite rules for the taxonomy. */
		if ( false !== $taxonomy->rewrite ) {

			$post_type_catched = false;

			/* If 'with_front' is true, dd $wp_rewrite->front to the trail. */
			if ( $taxonomy->rewrite['with_front'] && $wp_rewrite->front ) {
				$this->add_rewrite_front_items();
			}

			/* Get parent pages by path if they exist. */
			$this->add_path_parents( $taxonomy->rewrite['slug'] );

			/* Add post type archive if its 'has_archive' matches the taxonomy rewrite 'slug'. */
			if ( $taxonomy->rewrite['slug'] ) {

				$slug = trim( $taxonomy->rewrite['slug'], '/' );

				/**
				 * Deals with the situation if the slug has a '/' between multiple strings. For
				 * example, "movies/genres" where "movies" is the post type archive.
				 */
				$matches = explode( '/', $slug );

				/* If matches are found for the path. */
				if ( isset( $matches ) ) {

					/* Reverse the array of matches to search for posts in the proper order. */
					$matches = array_reverse( $matches );

					/* Loop through each of the path matches. */
					foreach ( $matches as $match ) {

						/* If a match is found. */
						$slug = $match;

						/* Get public post types that match the rewrite slug. */
						$post_types = $this->get_post_types_by_slug( $match );

						if ( ! empty( $post_types ) ) {

							$post_type_object = $post_types[0];

							$url  = get_post_type_archive_link( $post_type_object->name );
							/* Add support for a non-standard label of 'archive_title' (special use case). */
							$label = ! empty( $post_type_object->labels->archive_title )
								? $post_type_object->labels->archive_title
								: $post_type_object->labels->name;

							/* Add the post type archive link to the trail. */
							$this->_add_item( 'link_format', $label, $url );

							$post_type_catched = true;
							/* Break out of the loop. */
							break;
						}
					}
				}
			}

			/* Add the post type archive link to the trail for custom post types */
			if ( ! $post_type_catched ) {
				$post_type = isset( $taxonomy->object_type[0] ) ? $taxonomy->object_type[0] : false;

				if ( $post_type && 'post' != $post_type ) {
					$post_type_object = get_post_type_object( $post_type );

					$url  = get_post_type_archive_link( $post_type_object->name );
					/* Add support for a non-standard label of 'archive_title' (special use case). */
					$label = ! empty( $post_type_object->labels->archive_title )
						? $post_type_object->labels->archive_title
						: $post_type_object->labels->name;

					$this->_add_item( 'link_format', $label, $url );

				}
			}
		}

		/* If the taxonomy is hierarchical, list its parent terms. */
		if ( is_taxonomy_hierarchical( $term->taxonomy ) && $term->parent ) {
			$this->add_term_parents( $term->parent, $term->taxonomy );
		}

		$label = single_term_title( '', false );

		/* Add the term name to the trail end. */
		if ( is_paged() ) {

			$url = esc_url( get_term_link( $term, $term->taxonomy ) );
			$this->_add_item( 'link_format', $label, $url );

		}

		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for post type archives.
	 *
	 * @since 1.0.0
	 */
	public function add_post_type_archive_items() {

		/* Get the post type object. */
		$post_type_object = get_post_type_object( get_query_var( 'post_type' ) );

		if ( ! empty( $post_type_object ) && false !== $post_type_object->rewrite ) {

			/* If 'with_front' is true, add $wp_rewrite->front to the trail. */
			if ( ! empty( $post_type_object->rewrite ) && $post_type_object->rewrite['with_front'] ) {
				$this->add_rewrite_front_items();
			}
		}

		/* Add the post type [plural] name to the trail end. */
		if ( is_paged() ) {

			$url   = esc_url( get_post_type_archive_link( $post_type_object->name ) );
			$label = post_type_archive_title( '', false );

            if($post_type_object->name == 'product' && function_exists('wc_get_page_id')){
                $label = apply_filters('woocommerce_page_title', get_the_title( wc_get_page_id('shop') ) );
            }

			$this->_add_item( 'link_format', $label, $url );

		}

		$label = ! empty( $post_type_object->labels->archive_title )
			? $post_type_object->labels->archive_title
			: post_type_archive_title( '', false );

        if($post_type_object->name == 'product' && function_exists('wc_get_page_id')){
            $label = apply_filters('woocommerce_page_title', get_the_title( wc_get_page_id('shop') ) );
        }

		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for user (author) archives.
	 *
	 * @since 1.0.0
	 */
	public function add_user_archive_items() {
		global $wp_rewrite;

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Get the user ID. */
		$user_id = get_query_var( 'author' );

		/* If $author_base exists, check for parent pages. */
		if ( ! empty( $wp_rewrite->author_base ) ) {
			$this->add_path_parents( $wp_rewrite->author_base );
		}

		$label = get_the_author_meta( 'display_name', $user_id );

		/* Add the author's display name to the trail end. */
		if ( is_paged() ) {

			$url = esc_url( get_author_posts_url( $user_id ) );
			$this->_add_item( 'link_format', $label, $url );

		}

		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for minute + hour archives.
	 *
	 * @since 1.0.0
	 */
	public function add_minute_hour_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Add the minute + hour item. */
		$label = sprintf(
			$this->args['labels']['archive_minute_hour'],
			get_the_time( $this->args['date_labels']['archive_minute_hour'] )
		);
		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for minute archives.
	 *
	 * @since 1.0.0
	 */
	public function add_minute_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Add the minute item. */
		$label = sprintf(
			$this->args['labels']['archive_minute'],
			get_the_time( $this->args['date_labels']['archive_minute'] )
		);

		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for hour archives.
	 *
	 * @since 1.0.0
	 */
	public function add_hour_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Add the hour item. */
		$label = sprintf(
			$this->args['labels']['archive_hour'],
			get_the_time( $this->args['date_labels']['archive_hour'] )
		);
		$this->_add_item( 'target_format', $label, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for day archives.
	 *
	 * @since 1.0.0
	 */
	public function add_day_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Get year, month, and day. */
		$year = sprintf(
			$this->args['labels']['archive_year'],
			get_the_time( $this->args['date_labels']['archive_year'] )
		);

		$month = sprintf(
			$this->args['labels']['archive_month'],
			get_the_time( $this->args['date_labels']['archive_month'] )
		);

		$day = sprintf(
			$this->args['labels']['archive_day'],
			get_the_time( $this->args['date_labels']['archive_day'] )
		);

		/* Add the year and month items. */
		$this->_add_item(
			'link_format',
			$year,
			get_year_link( get_the_time( 'Y' ) )
		);

		$this->_add_item(
			'link_format',
			$month,
			get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) )
		);

		/* Add the day item. */
		if ( is_paged() ) {

			$this->_add_item(
				'link_format',
				$day,
				get_day_link( get_the_time( 'Y' ), get_the_time( 'm' ), get_the_time( 'd' ) )
			);

		}

		$this->_add_item( 'target_format', $day, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for week archives.
	 *
	 * @since 1.0.0
	 */
	public function add_week_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Get the year and week. */
		$year = sprintf(
			$this->args['labels']['archive_year'],
			get_the_time( $this->args['date_labels']['archive_year'] )
		);
		$week = sprintf(
			$this->args['labels']['archive_week'],
			get_the_time( $this->args['date_labels']['archive_week'] )
		);

		/* Add the year item. */
		$this->_add_item(
			'link_format',
			$year,
			get_year_link( get_the_time( 'Y' ) )
		);

		/* Add the week item. */
		if ( is_paged() ) {

			$this->_add_item(
				'link_format',
				$week,
				add_query_arg(
					array(
						'm' => get_the_time( 'Y' ),
						'w' => get_the_time( 'W' ),
					),
					esc_url( home_url( '/' ) )
				)
			);

		}

		$this->_add_item( 'target_format', $week, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for month archives.
	 *
	 * @since 1.0.0
	 */
	public function add_month_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Get the year and month. */
		$year  = sprintf(
			$this->args['labels']['archive_year'],
			get_the_time( $this->args['date_labels']['archive_year'] )
		);
		$month = sprintf(
			$this->args['labels']['archive_month'],
			get_the_time( $this->args['date_labels']['archive_month'] )
		);

		/* Add the year item. */
		$this->_add_item(
			'link_format',
			$year,
			get_year_link( get_the_time( 'Y' ) )
		);

		/* Add the month item. */
		if ( is_paged() ) {
			$this->_add_item(
				'link_format',
				$month,
				get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) )
			);

		}

		$this->_add_item( 'target_format', $month, '', '', false, true );
	}

	/**
	 * Adds the items to the trail items array for year archives.
	 *
	 * @since 1.0.0
	 */
	public function add_year_archive_items() {

		/* Add $wp_rewrite->front to the trail. */
		$this->add_rewrite_front_items();

		/* Get the year. */
		$year = sprintf(
			$this->args['labels']['archive_year'],
			get_the_time( $this->args['date_labels']['archive_year'] )
		);

		/* Add the year item. */
		if ( is_paged() ) {
			$this->_add_item(
				'link_format',
				$year,
				get_year_link( get_the_time( 'Y' ) )
			);
		}

		$this->_add_item( 'target_format', $year, '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for archives that don't have a more specific method
	 * defined in this class.
	 *
	 * @since 1.0.0
	 */
	public function add_default_archive_items() {

		/* If this is a date-/time-based archive, add $wp_rewrite->front to the trail. */
		if ( is_date() || is_time() ) {
			$this->add_rewrite_front_items();
		}

		$this->_add_item( 'target_format', $this->args['labels']['archives'], '', '', false, true );

	}

	/**
	 * Adds the items to the trail items array for search results.
	 *
	 * @since 1.0.0
	 */
	public function add_search_items() {

		$label = sprintf( $this->args['labels']['search'], get_search_query() );

		if ( is_paged() ) {
			$url   = get_search_link();
			$this->_add_item( 'link_format', $label, $url );
		} else {
			$this->_add_item( 'target_format', $label );
		}
		$this->_page_title = $label;
	}

	/**
	 * Adds the items to the trail items array for 404 pages.
	 *
	 * @since  1.0.0
	 * @return void
	 */
	public function add_404_items() {

		$this->_add_item( 'target_format', $this->args['labels']['error_404'], '', '', false, true );

	}

	/**
	 * Add post parents link to breadcrumbs items
	 *
	 * @since 1.0.0
	 *
	 * @param int $post_id first parent post ID.
	 */
	public function add_post_parents( $post_id ) {

		$parents = array();

		while ( $post_id ) {

			$url   = get_permalink( $post_id );
			$label = get_the_title( $post_id );
			$title = esc_attr( $label );

			$item = sprintf(
				$this->args['link_format'],
				$label, $this->css['link'], $title, $url
			);

			$parents[] = sprintf( $this->args['item_format'], $item, esc_attr( $this->css['item'] ) );

			$post = get_post( $post_id );
			// If there's no longer a post parent, break out of the loop.
			if ( 0 >= $post->post_parent ) {
				break;
			}

			// Change the post ID to the parent post to continue looping.
			$post_id = $post->post_parent;
		}

		// Get the post hierarchy based off the final parent post.
		$this->add_post_hierarchy( $post_id );
		$this->add_post_terms( $post_id );

		// Merge the parent items into the items array.
		$this->items = array_merge( $this->items, array_reverse( $parents ) );
	}

	/**
	 * Adds a specific post's hierarchy to the items array.
	 * The hierarchy is determined by post type's
	 * rewrite arguments and whether it has an archive page.
	 *
	 * @since 1.0.0
	 *
	 * @param  int $post_id The ID of the post to get the hierarchy for.
	 * @return void
	 */
	public function add_post_hierarchy( $post_id ) {

		if ( 'minified' == $this->args['path_type'] ) {
			return;
		}

		// Get the post type.
		$post_type        = get_post_type( $post_id );
		$post_type_object = get_post_type_object( $post_type );

		// If this is the 'post' post type, get the rewrite front items and map the rewrite tags.
		if ( 'post' === $post_type ) {
			// Get permalink specific breadcrumb items
			$this->add_rewrite_front_items();
			$this->map_rewrite_tags( $post_id, get_option( 'permalink_structure' ) );
		} elseif ( false !== $post_type_object->rewrite ) {
			// Add post type specific items
			if ( isset( $post_type_object->rewrite['with_front'] ) && $post_type_object->rewrite['with_front'] ) {
				$this->add_rewrite_front_items();
			}
		}

		/* If there's an archive page, add it to the trail. */
		if ( ! empty( $post_type_object->has_archive ) ) {

			$url = get_post_type_archive_link( $post_type );
			/* Add support for a non-standard label of 'archive_title' (special use case). */
			$label = ! empty( $post_type_object->labels->archive_title )
				? $post_type_object->labels->archive_title
				: $post_type_object->labels->name;

            if($post_type_object->name == 'product' && function_exists('wc_get_page_id')){
                $label = apply_filters('woocommerce_page_title', get_the_title( wc_get_page_id('shop') ) );
            }

			$this->_add_item( 'link_format', $label, $url );
		}
	}

	/**
	 * Searches for term parents of hierarchical taxonomies.
	 * This function is similar to the WordPress function get_category_parents() but handles any type of taxonomy.
	 *
	 * @since 1.0.0
	 *
	 * @param  int    $term_id  ID of the term to get the parents of.
	 * @param  string $taxonomy Name of the taxonomy for the given term.
	 */
	function add_term_parents( $term_id, $taxonomy ) {

		if ( 'minified' == $this->args['path_type'] ) {
			return;
		}

		/* Set up some default arrays. */
		$parents = array();

		/* While there is a parent ID, add the parent term link to the $parents array. */
		while ( $term_id ) {

			/* Get the parent term. */
			$term = get_term( $term_id, $taxonomy );

			$url   = get_term_link( $term_id, $taxonomy );
			$label = $term->name;
			$title = esc_attr( $label );

			$item = sprintf(
				$this->args['link_format'],
				$label, $this->css['link'], $title, $url
			);

			$parents[] = sprintf( $this->args['item_format'], $item, esc_attr( $this->css['item'] ) );

			/* Set the parent term's parent as the parent ID. */
			$term_id = $term->parent;
		}

		/* If we have parent terms, reverse the array to put them in the proper order for the trail. */
		if ( ! empty( $parents ) ) {
			$this->items = array_merge( $this->items, array_reverse( $parents ) );
		}
	}

	/**
	 * Service function to process single tag item.
	 *
	 * @param  string $tag     Single tag.
	 * @param  int    $post_id Processed post ID.
	 */
	function _process_single_tag( $tag, $post_id ) {

		global $post;

		/* Trim any '/' from the $tag. */
		$tag = trim( $tag, '/' );

		/* If using the %year% tag, add a link to the yearly archive. */
		if ( '%year%' == $tag ) {

			$url   = get_year_link( get_the_time( 'Y', $post_id ) );
			$label = sprintf(
				$this->args['labels']['archive_year'],
				get_the_time( $this->args['date_labels']['archive_year'] )
			);

			$this->_add_item( 'link_format', $label, $url );

			/* If using the %monthnum% tag, add a link to the monthly archive. */
		} elseif ( '%monthnum%' == $tag ) {

			$url   = get_month_link( get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ) );
			$label = sprintf(
				$this->args['labels']['archive_month'],
				get_the_time( $this->args['date_labels']['archive_month'] )
			);

			$this->_add_item( 'link_format', $label, $url );

			/* If using the %day% tag, add a link to the daily archive. */
		} elseif ( '%day%' == $tag ) {

			$url   = get_day_link(
				get_the_time( 'Y', $post_id ), get_the_time( 'm', $post_id ), get_the_time( 'd', $post_id )
			);
			$label = sprintf(
				$this->args['labels']['archive_day'],
				get_the_time( $this->args['date_labels']['archive_day'] )
			);

			$this->_add_item( 'link_format', $label, $url );

			/* If using the %author% tag, add a link to the post author archive. */
		} elseif ( '%author%' == $tag ) {

			$url   = get_author_posts_url( $post->post_author );
			$label = get_the_author_meta( 'display_name', $post->post_author );

			$this->_add_item( 'link_format', $label, $url );

			/* If using the %category% tag, add a link to the first category archive to match permalinks. */
		} elseif ( '%category%' == $tag ) {

			/* Force override terms in this post type. */
			$this->args['post_taxonomy'][ $post->post_type ] = false;

			/* Get the post categories. */
			$terms = get_the_category( $post_id );

			/* Check that categories were returned. */
			if ( $terms ) {

				/* Sort the terms by ID and get the first category. */
				if ( function_exists( 'wp_list_sort' ) ) {
					$terms = wp_list_sort( $terms, array(
						'term_id' => 'ASC',
					) );

				} else {

					// Backward compatibility with WordPress 4.6 or later.
					usort( $terms, '_usort_terms_by_ID' );
				}

				$term = get_term( $terms[0], 'category' );

				/* If the category has a parent, add the hierarchy to the trail. */
				if ( 0 < $term->parent ) {
					$this->add_term_parents( $term->parent, 'category' );
				}

				$url   = get_term_link( $term, 'category' );
				$label = $term->name;

				$this->_add_item( 'link_format', $label, $url );
			}
		}
	}


	/**
	 * Turns %tag% from permalink structures into usable links for the breadcrumb trail.
	 * This feels kind of hackish for now because we're checking for specific %tag% examples and only doing
	 * it for the 'post' post type. In the future, maybe it'll handle a wider variety of possibilities,
	 * especially for custom post types.
	 *
	 * @since 1.0.0
	 *
	 * @param  int    $post_id ID of the post whose parents we want.
	 * @param  string $path    Path of a potential parent page.
	 */
	public function map_rewrite_tags( $post_id, $path ) {

		/* Get the post based on the post ID. */
		$post = get_post( $post_id );

		/* If no post is returned, an error is returned, or the post does not have a 'post' post type, return. */
		if ( empty( $post ) || is_wp_error( $post ) || 'post' !== $post->post_type ) {
			return;
		}

		/* Trim '/' from both sides of the $path. */
		$path = trim( $path, '/' );

		/* Split the $path into an array of strings. */
		$matches = explode( '/', $path );

		/* If matches are found for the path. */
		if ( ! is_array( $matches ) ) {
			return;
		}

		/* Loop through each of the matches, adding each to the $trail array. */
		foreach ( $matches as $match ) {
			$this->_process_single_tag( $match, $post_id );
		}
	}

	/**
	 * Try to escape font icon from passed label and return it if found, or return label
	 *
	 * @since  1.0.0
	 * @param  string      $label    Passed label.
	 * @param  bool|string $fallback Optional fallback text to add inside icon tag.
	 * @return string
	 */
	public function prepare_label( $label, $fallback = false ) {

		$prefix = 'icon:';

		// Return simple text label if icon not found
		if ( false === strpos( $label, $prefix ) ) {
			return $label;
		}

		$label = str_replace( $prefix, '', $label );
		$label = str_replace( '.', '', $label );

		if ( false !== $fallback ) {
			$fallback = sprintf(
				apply_filters( 'pisces/filter/breadcrumbs/icon_fallback', '<span class="hidden">%s</span>', $fallback ),
				esc_attr( $fallback )
			);
		}

		// Check if is Font Awesome icon
		if ( 0 === strpos( $label, 'fa-' ) ) {
			return sprintf( '<i class="fa %1$s">%2$s</i>', esc_attr( $label ), $fallback );
		}

		// Return default icon
		return sprintf(
			apply_filters( 'pisces/filter/breadcrumbs/default_icon_format', '<span class="%1$s">%2$s</span>', $label, $fallback ),
			esc_attr( $label ), $fallback
		);

	}

	/**
	 * Returns the instance.
	 *
	 * @since  1.0.0
	 * @return object
	 */
	public static function get_instance( $args ) {

		// If the single instance hasn't been set, set it now.
		if ( null == self::$instance ) {
			self::$instance = new self( $args );
		}

		return self::$instance;
	}
}