<?php

defined( 'ABSPATH' ) or die( 'Access denied' );

if( ! class_exists( 'A_W_F_filter_frontend' ) ) {
  
  class A_W_F_filter_frontend extends A_W_F_filter {

    protected $preset;
    public $terms;
    public $var_name = '';
    protected $terms_by_parent = array();
    protected $active_values = array();
    protected $input_classes;
    protected $default_value = false;

    public function __construct( $preset_frontend, $filter_id ) {
      parent::__construct( $preset_frontend->id, $filter_id );

      $this->preset = $preset_frontend;
      $this->terms = $this->get_filter_terms();

      if( 'taxonomy' === $this->module ) {
        if( ! isset( A_W_F::$front->tax_var_names[$this->settings['taxonomy']] ) ) { return; }

        $this->var_name = A_W_F::$front->tax_var_names[$this->settings['taxonomy']];

        if( isset( A_W_F::$front->query->tax[$this->settings['taxonomy']] ) ) {
          $this->active_values = A_W_F::$front->query->tax[$this->settings['taxonomy']];
        }

        if( ( ! empty( $this->settings['show_count'] ) || ( isset( $this->settings['hide_empty'] ) && 'none' !== $this->settings['hide_empty'] ) )
          && ! empty( $this->terms )
          && ! isset( A_W_F::$front->counts[$this->settings['taxonomy']] )
        ) { $this->build_counts(); }

      } else {

        if( 'price' === $this->module || 'rating' === $this->module ) {

          $this->var_name = 'min_' .  $this->module;

          if( isset( A_W_F::$front->query->awf['min_' .  $this->module] ) ) {
            $this->active_values['min'] = (float) A_W_F::$front->query->awf['min_' .  $this->module];
          } else {
            $this->active_values['min'] = (float) $this->settings['type_options']['range_values'][0];
          }

          if( isset( A_W_F::$front->query->awf['max_' .  $this->module] ) ) {
            $this->active_values['max'] = (float) A_W_F::$front->query->awf['max_' .  $this->module];
          } else {
            $this->active_values['max'] = (float) $this->settings['type_options']['range_values'][count( $this->settings['type_options']['range_values'] ) - 1];
          }

        } else {
          $this->var_name = A_W_F::$front->awf_var_names[$this->module];

          if( isset( A_W_F::$front->query->awf[$this->module] ) ) {
            $this->active_values[] = A_W_F::$front->query->awf[$this->module];
          }
        }
      }
    }

    function get_html() {

      $this->terms_by_parent = $this->build_terms_by_parent( $this->terms );

      $this->input_classes = array( 'awf-filter' );

      if( in_array( $this->settings['style'], array( 'labels', 'icons', 'images', 'colours', 'tags', 'custom-terms', 'range-stars' ) ) ) {
        $this->input_classes[] = 'awf-hidden';
      }

      $html = '<div id="' . $this->preset->caller_id . '-filter-' . $this->preset_id . '-' . $this->id . '-wrapper"';
      $html .= ' class="awf-filter-wrapper';
      if( ! empty( $this->settings['type'] ) ) { $html .= ' awf-' . $this->settings['type']; }
      $html .= $this->add_filter_wrapper_classes( $html );
      $html .= '">';

      if( ! empty( $this->settings['show_title'] ) ) {
        $html .= '<div class="awf-filter-title-container"><div class="awf-filter-title">' . $this->settings['title'] . '</div>';
        $html .= $this->collapse_btn_html();
        $html .= '</div>';
      }

      if( ! empty( $this->settings['show_active'] ) ) {
        $html .= '<div class="awf-active-badges-container"></div>';
      }

      $html .= '<div class="awf-filters-container awf-filters-' . $this->preset_id . '-' . $this->id . '-container';
      $html .= ' awf-filters-' . $this->var_name;
      if( 'range-slider' === $this->settings['style'] ) {
        if( 'taxonomy_range' === $this->settings['type_options']['range_type'] ) {
          $html .= ' awf-taxonomy-range-container';
          
        } else {
          $html .= ' awf-filters-' . A_W_F::$front->awf_var_names['max_' . $this->module];
        }
      }
      if( ! empty( $this->settings['style'] ) ) { $html .= ' awf-style-' . $this->settings['style']; }
      if( ! empty( $this->settings['children_collapsible'] ) ) { $html .= ' awf-collapsible-children'; }
      if( isset( $this->settings['style_options']['hide_label'] ) ) { $html .= ' awf-hide-label'; }
      if( ! empty( $this->settings['height_limit'] ) ) {
        $html .= ' awf-scrollbars-on';
        if( 'yes' === get_option( 'awf_pretty_scrollbars' ) ) { $html .= ' awf-pretty-scrollbars'; }
      }
      $html .= '"';
      $html .= '>';

      if( isset( $this->settings['show_search'] ) && ! empty( $this->settings['show_search'] ) ) {
        $html .= '<div class="awf-filters-search-container">';
        $html .= '<input type="text" placeholder="' . sprintf( esc_attr__( 'Search %1$s', 'annasta-filters' ), strtolower( $this->settings['title'] ) ) . '"  class="awf-filters-search">';
        $html .= '</div>';
      }

      if( 'single' === $this->settings['type'] ) {

        if( 'ppp' === $this->module ) {
          $this->default_value = A_W_F::$front->awf_settings['ppp_default'];
          $this->input_classes[] = 'awf-no-active-badge';

        } else if( 'stock' === $this->module ) {
          $this->default_value = 'all';
        }

        if( empty( $this->active_values ) ) { $this->active_values[] = $this->default_value; }
      }

      if( 'range-slider' === $this->settings['style'] ) {
        if( 'taxonomy_range' === $this->settings['type_options']['range_type'] ) {
          $html .= $this->taxonomy_range_slider_html();
        } else {
          $html .= $this->range_slider_html();
        }

      } else if( 'search' === $this->module ) {
        $html .= $this->searchbox_html();

      } else {
        if( isset( $this->terms_by_parent[0] ) ) {
          $html .= '<ul>' . $this->terms_list_html() . '</ul>';
        }
      }
      
      $html .= '</div></div>';
      return $html;
    }

    function searchbox_html() {

      $html = '<div class="awf-filter-container awf-product-search-container';
      if( isset( $this->active_values[0] ) ) {
        $html .= ' awf-active';
      } else {
        $this->active_values[0] = '';
      }
      $html .= '">';
      $html .= '<label for="' . $this->preset->caller_id . '-' . $this->var_name . '" class="screen-reader-text">';
      $html .= esc_html__( 'Search products:', 'annasta-filters' ) . '</label>';
      $html .= '<input type="search" id="' . $this->preset->caller_id . '-' . $this->var_name . '"';
      $html .= ' name="s" value="' . $this->active_values[0] . '" data-taxonomy="' . $this->var_name . '"';
      $html .= ' placeholder="' . esc_attr__( 'Search products&hellip;', 'annasta-filters' ) . '" class="awf-filter">';
      $html .= '</div>';

      return $html;
    }

    function range_slider_html() {
      $max_var_name = 'max_' . $this->module;
      $max_range_value = $this->settings['type_options']['range_values'][count( $this->settings['type_options']['range_values'] ) - 1];

      $html = '<div class="awf-filter-container awf-range-slider-container';
      if( ! empty( $this->settings['style_options']['show_range_btn'] ) ) { $html .= ' awf-range-btn'; }
      
      if(
        (
          ( isset( A_W_F::$front->query->awf['min_' .  $this->module] ) && floatval( A_W_F::$front->query->awf['min_' .  $this->module] ) === $this->active_values['min'] )
           || ( ! isset( A_W_F::$front->query->awf['min_' .  $this->module] ) && $this->active_values['min'] === $this->settings['type_options']['range_values'][0] )
        ) && (
          ( isset( A_W_F::$front->query->awf['max_' .  $this->module] ) && floatval( A_W_F::$front->query->awf['max_' .  $this->module] ) === $this->active_values['max'] )
          || ( ! isset( A_W_F::$front->query->awf['max_' .  $this->module] ) && $this->active_values['max'] === $max_range_value )
        )
      ) {
        $html .= ' awf-active';
      }
      
      $html .= $this->add_range_slider_container_classes();
      $html .= '"';
      
      $html .= ' data-min="' . $this->settings['type_options']['range_values'][0] . '" data-max="' . $max_range_value . '"';
      $html .= ' data-values="' . implode( '--', $this->settings['type_options']['range_values'] ) . '"';
      $html .= ' data-step="' . $this->settings['style_options']['step'] . '"';
      $html .= ' data-label="' . esc_attr( $this->settings['style_options']['badge_label'], 'annasta-filters' ) . '"';
      $html .= ' data-prefix="' . esc_attr( $this->settings['style_options']['value_prefix'], 'annasta-filters' ) . '"';
      $html .= ' data-postfix="' . esc_attr( $this->settings['style_options']['value_postfix'], 'annasta-filters' ) . '"';
      $html .= '>';

      $html .= '<input type="hidden" name="' . A_W_F::$front->awf_var_names[$this->var_name] . '" value="' . $this->active_values['min'] . '"';
      $html .= ' data-taxonomy="' . A_W_F::$front->awf_var_names[$this->var_name] . '" data-module="' . $this->module . '"';
      $html .= ' class="awf-filter awf-range-slider-value awf-range-slider-min';

      if( $this->active_values['min'] === $this->settings['type_options']['range_values'][0] ) {
        $html .= ' awf-default';
      }

      $html .= '">';

      $html .= '<input type="hidden" name="' . A_W_F::$front->awf_var_names[$max_var_name] . '"';
      $html .= ' value="' . $this->active_values['max'] . '" data-taxonomy="' . A_W_F::$front->awf_var_names[$max_var_name] . '" data-module="' . $this->module . '"';
      $html .= ' class="awf-filter awf-range-slider-value awf-range-slider-max';

      if( $this->active_values['max'] === $max_range_value ) {
        $html .= ' awf-default';
      }

      $html .= '">';

      $html .= '</div>';

      if( ! empty( $this->settings['style_options']['show_range_btn'] ) ) {
        if( 'yes' === $this->preset->button_on && 'no' === $this->preset->ajax_on ) {
          $html .= '<button type="submit" name="awf_submit" value="1">' . esc_html_x( 'Filter', 'Filter button label', 'annasta-filters' ) . '</button>';

        } else {
          $html .= '<button type="button" class="awf-apply-filter-btn">' . esc_html_x( 'Filter', 'Filter button label', 'annasta-filters' ) . '</button>';
        }
      }

      return $html;
    }

    function terms_list_html( $parent_id = 0 ) {

      $html = '';

      foreach( $this->terms_by_parent[$parent_id] as $i => $term ) {
        
        $slug_for_classes = is_int( $term->slug ) ? $term->slug : sanitize_title( $term->slug );
        
        $input_id = $this->preset->caller_id . '-' . $this->var_name . '-' . $slug_for_classes;
        $container_classes = array( 'awf-filter-container', 'awf-' . $this->var_name . '-' . $slug_for_classes . '-container' );
        $input_classes = $this->input_classes; //, 'awf-' . $this->var_name,
        $input_props = array();
        $product_count_html = '';

        if( $term->slug === $this->default_value ) { $input_classes[] = 'awf-default'; }
        
        if( 'range' === $this->settings['type'] ) {
          $container_classes[] = 'awf-range-filter-container';
          
          if( $term->slug === $this->active_values['min'] && $term->next_value === $this->active_values['max'] ) {
            $container_classes[] = 'awf-active';
            $input_props[] = 'checked="checked"';
          }
          
        } else {
          if( in_array( $term->slug, $this->active_values ) ) {
            $container_classes[] = 'awf-active';
            $input_props[] = 'checked="checked"';
          }
        }
        
        if( ! empty( $this->settings['children_collapsible'] ) && isset( $this->terms_by_parent[$term->term_id] ) ) {
          $container_classes[] = 'awf-parent-container';
          if( ! empty( $this->settings['children_collapsible_on'] ) ) { $container_classes[] = 'awf-collapsed-on'; }
        }

        if( 'taxonomy' === $this->module && isset( A_W_F::$front->counts[$this->settings['taxonomy']] ) ) {
          
          $this->set_hide_empty( $term->slug, $container_classes, $input_props );

          if( ! empty( $this->settings['show_count'] ) ) {
            $product_count_html = '<span class="awf-filter-count">' . A_W_F::$front->counts[$this->settings['taxonomy']][$term->slug] . '</span>';
          }
        }

        $html .= '<li class="' . implode( ' ', $container_classes ) . '">';
        $filter_html = '';

        if( 'single' === $this->settings['type'] ) {
          $filter_html .= '<input type="radio" id="' . $input_id . '" name="' . $this->var_name . '"';

        } else if( 'multi' === $this->settings['type'] ) {
          $filter_html .= '<input type="checkbox" id="' . $input_id . '" name="' . $this->var_name . '[]"';

        } else if( 'range' === $this->settings['type'] ) {
          $filter_html .= '<input type="radio" id="' . $input_id . '" name="' . $this->var_name . '"';
          $filter_html .= ' data-module="' . $this->module . '"';
          $filter_html .= ' data-max-name="' . A_W_F::$front->awf_var_names['max_' . $this->module] . '"';
          
          if( in_array( $this->settings['type_options']['range_type'], array( 'auto_range', 'custom_range' ) ) ) {
            $filter_html .= ' data-next-value="' . $term->next_value . '"';
            $filter_html .= ' data-decimals="' . $this->settings['type_options']['decimals'] . '"';
          }
          
        }

        $filter_html .= ' value="' . $term->slug . '" data-taxonomy="' . $this->var_name . '"';
        $filter_html .= ' class="' . implode( ' ', $input_classes ) . '"' . implode( ' ', $input_props ) . '>';

        $filter_html .= '<label';
        if( true !== $this->preset->is_url_query ) { $filter_html .= ' for="' . $input_id . '"'; };

        $filter_html .= ' class="';
        
        if( in_array( $this->settings['style'], array( 'images', 'colours', 'custom-terms' ) ) ) { 
          $filter_html .= 'awf-term-' . $term->term_id;
          
        } elseif( 'range-stars' === $this->settings['style'] ) {
          $filter_html .= 'awf-' . intval( $term->next_value ) . '-stars';
        }
        
        $filter_html .= '"';

        $filter_html .= ' title="';
        if( 'range' === $this->settings['type'] ) { $filter_html .= esc_attr__( $this->settings['title'], 'annasta-filters' ) . ' '; }
        $filter_html .= $term->name;
        $filter_html .= '">';
        
        $this->set_term_label( $term );

        if( isset( $this->settings['style_options']['hide_label'] ) ) {
          $filter_html .= '<span class="awf-count-wo-label">' . $product_count_html . '</span>';
          
        } else {
          $filter_html .= $term->name . $product_count_html;
        }

        $filter_html .= '</label>';

        if( true === $this->preset->is_url_query ) {

          $href = 'javascript:void(0);';

          if( ! in_array( 'disabled', $input_props ) ) {
            if( empty( $this->settings['reset_all'] ) ) {
              $f = 'get_' . $this->settings['type'] . '_type_term_url';
              if( method_exists( $this, $f ) ) { $href = $this->$f( $term ); }
              
            } else {
              $href = $this->get_reset_all_url( $term );
            }
          }

          $html .= '<a href="' . $href . '">';
          $html .= $filter_html;
          $html .= '</a>';          

        } else {
          $html .= $filter_html;
        }

        $html .= '</li>';

        if( isset( $this->terms_by_parent[$term->term_id] ) ) {
          $html .= '<ul class="awf-children-container awf-' . $term->slug . '-children';
          if( ! empty( $this->settings['children_collapsible_on'] ) ) { $html .= ' awf-collapsed'; }
          $html .= '">';
          $html .= $this->terms_list_html( $term->term_id );
          $html .= '</ul>';
        }
      }

      return $html;
    }

    public function get_single_type_term_url( $term ) {

      $url_filters = A_W_F::$front->url_query;
      $url = A_W_F::$front->current_url;

      if( $term->slug === $this->default_value ) { 
        if( isset( $url_filters[$this->var_name] ) ) {
          unset( $url_filters[$this->var_name] );
        };
        
      } else {
        if( in_array( $term->slug, $this->active_values ) ) {
          unset( $url_filters[$this->var_name] );
        } else {
          $url_filters[$this->var_name] = $term->slug;
        }
      }

      if( A_W_F::$front->awf_settings['cat_views_on'] ) {

        if( 'product_cat' === $this->var_name ) {

          if( isset( $url_filters['product_cat'] ) ) {
            $url = str_replace( 'awf-insert-product-cats', $url_filters['product_cat'], A_W_F::$front->cat_url_template );
            unset( $url_filters['product_cat'] );

          } else {
            $url = A_W_F::$front->shop_url;
          }

        } else {
          unset( $url_filters['product_cat'] );
        }
      }

      return add_query_arg( $url_filters, $url );
    }

    public function get_multi_type_term_url( $term ) {
      $url_filters = A_W_F::$front->url_query;
      $url = A_W_F::$front->current_url;

      if( empty( $this->active_values ) ) {
        $url_filters[$this->var_name] = $term->slug;

      } else {
        $href_terms = $this->active_values;

        $key = array_search( $term->slug, $href_terms );
        if ( $key === false) {

          if( 0 !== $term->parent ) {
            $this->remove_ancestors( $term, $href_terms );
          }

          if( isset( A_W_F::$front->page_associations[$this->settings['taxonomy']][$term->term_id] ) ) {

            $children = get_terms( array(
              'taxonomy' => $this->settings['taxonomy'],
              'fields' => 'slugs',
              'child_of' => (int) $term->term_id,
              'hide_empty' => false
            ));

            $href_terms = array_diff( $href_terms, $children );
          }

          $href_terms[] = $term->slug;

        } else {
          unset( $href_terms[$key] );
        }

        if( empty( $href_terms ) ) { 
          unset( $url_filters[$this->var_name] );

        } else {
          $url_filters[$this->var_name] = implode( ',', $href_terms );
        }
      }

      if( A_W_F::$front->awf_settings['cat_views_on']  ) {
        if( 'product_cat' === $this->var_name ) {
          if( isset( $url_filters['product_cat'] ) ) {
            $url = str_replace( 'awf-insert-product-cats', $url_filters['product_cat'], A_W_F::$front->cat_url_template );
            unset( $url_filters['product_cat'] );

          } else {
            $url = A_W_F::$front->shop_url;
          }
          
        } else {
          unset( $url_filters['product_cat'] );
        }
      }

      return add_query_arg( $url_filters, $url );
    }
    
    public function get_range_type_term_url( $term ) {

      $url_filters = A_W_F::$front->url_query;
      $url = A_W_F::$front->current_url;
      
      if( in_array( $term->slug, $this->active_values ) & in_array( $term->next_value, $this->active_values ) ) {
        unset( $url_filters[$this->var_name] );
        unset( $url_filters['max_' . $this->module] );
        
      } else {
        $url_filters[$this->var_name] = $term->slug;
        $url_filters['max_' . $this->module] = $term->next_value;
      }
      
      if( A_W_F::$front->awf_settings['cat_views_on'] ) {
          unset( $url_filters['product_cat'] );
      }

      return add_query_arg( $url_filters, $url );
    }

    protected function remove_ancestors( $term, &$query_terms ) {

      if( false !== ( $parent = get_term_by( 'id', $term->parent, $term->taxonomy ) ) ) {

        if( false !== ( $key = array_search( $parent->slug, $query_terms ) ) ) {
          unset( $query_terms[$key] );
        }

        if( 0 !== $parent->parent ) {
          $this->remove_ancestors( $parent, $query_terms );
        }
      }

      return;
    }

    public function build_counts() {
      $terms_by_parent = array();
      foreach( $this->terms as $term ) { $terms_by_parent[$term->{'parent'}][] = $term; }

      if( isset( $terms_by_parent[0] ) ) {
        $tax_backup = isset( A_W_F::$front->query->tax[$this->settings['taxonomy']] ) ? A_W_F::$front->query->tax[$this->settings['taxonomy']] : false;

        $this->counts_walker( $terms_by_parent );

        if( false === $tax_backup ) { unset( A_W_F::$front->query->tax[$this->settings['taxonomy']] ); }
        else { A_W_F::$front->query->tax[$this->settings['taxonomy']] = $tax_backup; }

        A_W_F::$front->update_counts_cache = true;
      }
    }

    protected function counts_walker( $terms_by_parent, $parent_id = 0 ) {

      if( empty( $terms_by_parent[$parent_id] ) ) { return; }

      foreach ( $terms_by_parent[$parent_id] as $term ) {
        A_W_F::$front->query->tax[$this->settings['taxonomy']] = array( $term->slug );

        $args = array(
          'post_type' => 'product',
          'fields' => 'ids',
          'post_status' => 'publish',
          'ignore_sticky_posts' => true,
          'post_status' => 'publish',
          'no_found_rows' => true,
          'posts_per_page' => -1,
          'paged' => '',
          'post__in' => array(),
        );

        $args['tax_query'] = A_W_F::$front->set_wc_tax_query( array() );
        A_W_F::$front->set_default_visibility( $args['tax_query'] );
        $args['meta_query'] = A_W_F::$front->set_wc_meta_query( array() );
        A_W_F::$front->set_sc_post__in( $args );
        $args['post__in'] = A_W_F::$front->set_wc_post__in( $args['post__in'] );

        $query = new WP_Query( $args );

        A_W_F::$front->counts[$this->settings['taxonomy']][$term->slug] = (int) $query->post_count;

        if( isset( $terms_by_parent[$term->term_id] ) ) {
          $this->counts_walker( $terms_by_parent, $term->term_id );
        }
      }

      return;
    }
    
    protected function add_filter_wrapper_classes() { return ''; }
    protected function collapse_btn_html() { return ''; }
    protected function set_term_label( &$term ) {}
    protected function set_hide_empty( $slug, &$container_classes, &$input_props ) {}
    protected function add_range_slider_container_classes() { return ''; }

  }
}

?>