<?php

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

/**
* widget to fecth products by category.
*
* @class    CED_CAF_Widget_Pro_Categories
* @version  1.0.0
* @category Class
* @author   CedCommerce
*/
class CED_CAF_Widget_Pro_Categories extends CED_CAF_Widget {

	/**
	 * Category ancestors.
	 */
	public $cat_ancestors;

	/**
	 * Current Category.
	 */
	public $current_cat;

	/**
	 * Constructor.
	 */
	public function __construct() {
		$this->widget_cssclass    = 'ccas_ajax_category_filter';
		$this->widget_description = __( 'Show list of categories in widget and lets you search products based on category.', 'ajaxify-filters' );
		$this->widget_id          = 'ccas_ajax_product_categories';
		$this->widget_name        = __( 'AJAX Product Categories', 'ajaxify-filters' );
		$this->settings           = array(
			'title'  => array(
				'type'  => 'text',
				'std'   => __( 'Product Categories', 'ajaxify-filters' ),
				'label' => __( 'Title', 'ajaxify-filters' )
			),
			'orderby' => array(
				'type'  => 'select',
				'std'   => 'name',
				'label' => __( 'Order by', 'ajaxify-filters' ),
				'options' => array(
					'order' => __( 'Category Order', 'ajaxify-filters' ),
					'name'  => __( 'Name', 'ajaxify-filters' )
				)
			),
			'count' => array(
				'type'  => 'checkbox',
				'std'   => 0,
				'label' => __( 'Show product counts', 'ajaxify-filters' )
			),
			'hierarchical' => array(
				'type'  => 'checkbox',
				'std'   => 1,
				'label' => __( 'Show hierarchy', 'ajaxify-filters' )
			),
			'show_children_only' => array(
				'type'  => 'checkbox',
				'std'   => 0,
				'label' => __( 'Only show children of the current category', 'ajaxify-filters' )
			)
		);

		parent::__construct();
	}

	/**
	 * Output widget.
	 */
	public function widget( $args, $instance ) {

		if ( ! is_post_type_archive( 'product' ) && ! is_tax( get_object_taxonomies( 'product' ) ) ) {
			return;
		}
		
		global $wp_query, $post;

		$count              = isset( $instance['count'] ) ? $instance['count'] : $this->settings['count']['std'];
		$hierarchical       = isset( $instance['hierarchical'] ) ? $instance['hierarchical'] : $this->settings['hierarchical']['std'];
		$show_children_only = isset( $instance['show_children_only'] ) ? $instance['show_children_only'] : $this->settings['show_children_only']['std'];
		//$dropdown           = isset( $instance['dropdown'] ) ? $instance['dropdown'] : $this->settings['dropdown']['std'];
		$orderby            = isset( $instance['orderby'] ) ? $instance['orderby'] : $this->settings['orderby']['std'];
		//$hide_empty         = isset( $instance['hide_empty'] ) ? $instance['hide_empty'] : $this->settings['hide_empty']['std'];
		//$dropdown_args      = array( 'hide_empty' => $hide_empty );
		$list_args          = array( 'show_count' => $count, 'hierarchical' => $hierarchical, 'taxonomy' => 'product_cat' );

		// Menu Order
		$list_args['menu_order'] = false;
		if ( $orderby == 'order' ) {
			$list_args['menu_order'] = 'asc';
		} else {
			$list_args['orderby']    = 'title';
		}

		// Setup Current Category
		$this->current_cat   = false;
		$this->cat_ancestors = array();

		if ( is_tax( 'product_cat' ) ) {

			$this->current_cat   = $wp_query->queried_object;
			$this->cat_ancestors = get_ancestors( $this->current_cat->term_id, 'product_cat' );

		} elseif ( is_singular( 'product' ) ) {

			$product_category = wc_get_product_terms( $post->ID, 'product_cat', array( 'orderby' => 'parent' ) );

			if ( $product_category ) {
				$this->current_cat   = end( $product_category );
				$this->cat_ancestors = get_ancestors( $this->current_cat->term_id, 'product_cat' );
			}

		}

		// Show Siblings and Children Only
		if ( $show_children_only && $this->current_cat ) {

			// Top level is needed
			$top_level = get_terms(
				'product_cat',
				array(
					'fields'       => 'ids',
					'parent'       => 0,
					'hierarchical' => true,
					'hide_empty'   => false
				)
			);

			// Direct children are wanted
			$direct_children = get_terms(
				'product_cat',
				array(
					'fields'       => 'ids',
					'parent'       => $this->current_cat->term_id,
					'hierarchical' => true,
					'hide_empty'   => false
				)
			);

			// Gather siblings of ancestors
			$siblings  = array();
			if ( $this->cat_ancestors ) {
				foreach ( $this->cat_ancestors as $ancestor ) {
					$ancestor_siblings = get_terms(
						'product_cat',
						array(
							'fields'       => 'ids',
							'parent'       => $ancestor,
							'hierarchical' => false,
							'hide_empty'   => false
						)
					);
					$siblings = array_merge( $siblings, $ancestor_siblings );
				}
			}

			if ( $hierarchical ) {
				$include = array_merge( $top_level, $this->cat_ancestors, $siblings, $direct_children, array( $this->current_cat->term_id ) );
			} else {
				$include = array_merge( $direct_children );
			}

			$dropdown_args['include'] = implode( ',', $include );
			$list_args['include']     = implode( ',', $include );

			if ( empty( $include ) ) {
				return;
			}

		} elseif ( $show_children_only ) {
			$dropdown_args['depth']        = 1;
			$dropdown_args['child_of']     = 0;
			$dropdown_args['hierarchical'] = 1;
			$list_args['depth']            = 1;
			$list_args['child_of']         = 0;
			$list_args['hierarchical']     = 1;
		}

		$this->widget_start( $args, $instance );

		require_once( CED_CAF_PLUGIN_DIR_PATH. '/core/walkers/class-ced-caf-pro-cat-walker.php' );

			$list_args['walker']                     = new CED_CAF_Pro_Cat_Walker;
			$list_args['title_li']                   = '';
			$list_args['pad_counts']                 = 1;
			$list_args['show_option_none']           = __('No product categories exist.', 'ajaxify-filters' );
			$list_args['current_category']           = ( $this->current_cat ) ? $this->current_cat->term_id : '';
			$list_args['current_category_ancestors'] = $this->cat_ancestors;

			echo '<ul class="ccas-product-categories">';

			wp_list_categories( apply_filters( 'ccas_ajax_product_categories_widget_args', $list_args ) );

			echo '</ul>';
		

		$this->widget_end( $args );
	}
}