<?php

defined( 'ABSPATH' ) or die( 'Access denied' );

if( ! class_exists( 'A_W_F_filter' ) ) {
  
  class A_W_F_filter {
    
    public $id;
    public $preset_id;
    public $name;
    public $module;
    public $settings;
    
    public $prefix;
    
    public function __construct( $preset_id, $filter_id ) {
      $this->preset_id = (int) $preset_id;
      $this->id = (int) $filter_id;
      
      $this->prefix = self::get_prefix( $this->preset_id, $this->id );
      
      $this->name = get_option( $this->prefix . 'name', '' );
      $this->module = get_option( $this->prefix . 'module', '' );
      $this->settings = get_option( $this->prefix . 'settings', array() );
    }
    
    public static function get_prefix( $preset_id, $filter_id ) {
      return 'awf_filter_' . $preset_id . '-' . $filter_id . '_';
    }
    
    public function get_filter_terms( $sort = true ) {

      $terms = array();

      if( 'ppp' === $this->module ) {
        foreach( $this->settings['ppp_values'] as $value => $label ) {
          $label = ( -1 === $value ) ? esc_html( $label ) : esc_html( $value . ' ' . $label );
          $terms[] = ( object ) array( 'slug' => $value, 'name' => $label, 'parent' => 0, 'term_id' => -1 );
        }

      } elseif( 'price' === $this->module || 'rating' === $this->module ) {
        $last_i = count( $this->settings['type_options']['range_values'] ) - 1;
        $decimal_separator = wc_get_price_decimal_separator();
        $thousand_separator = wc_get_price_thousand_separator();
        
        foreach( $this->settings['type_options']['range_values'] as $i => $value ) {
          if( $i < $last_i ) {
            $next_value_i = $i + 1;
            $next_value = 0;
            
            if( $next_value_i === $last_i ) {
              $next_value = $this->settings['type_options']['range_values'][$next_value_i];
            } else {
              $next_value = $this->settings['type_options']['range_values'][$next_value_i] - $this->settings['type_options']['precision'];
              $next_value = round( $next_value, 2, PHP_ROUND_HALF_UP );
            }
            
            $formatted_value = number_format( $value, $this->settings['type_options']['decimals'], $decimal_separator, $thousand_separator );
            $formatted_next_value = number_format( $next_value, $this->settings['type_options']['decimals'], $decimal_separator, $thousand_separator );
            $prefix = isset( $this->settings['style_options']['value_prefix'] ) ? $this->settings['style_options']['value_prefix'] : '';
            $postfix = isset( $this->settings['style_options']['value_postfix'] ) ? $this->settings['style_options']['value_postfix'] : '';
            
            if( $formatted_value === $formatted_next_value ) {
              $name = $prefix . $formatted_value . $postfix;
            } else {
              $name = $prefix . $formatted_value . $postfix . ' - ' . $prefix . $formatted_next_value . $postfix;
            }
            
            $terms[] = ( object ) array( 'slug' => (float) $value, 'name' => $name, 'parent' => 0, 'term_id' => -1*($i+1), 'next_value' => (float) $next_value );
          }
        }

      } elseif( 'stock' === $this->module ) {
        $terms = array(
          ( object ) array( 'slug' => 'all', 'name' => esc_html__( 'All', 'annasta-filters' ), 'parent' => 0, 'term_id' => -1 ),
          ( object ) array( 'slug' => 'instock', 'name' => esc_html__( 'In stock', 'annasta-filters' ), 'parent' => 0, 'term_id' => -2 ),
          ( object ) array( 'slug' => 'outofstock', 'name' => esc_html__( 'Out of stock', 'annasta-filters' ), 'parent' => 0, 'term_id' => -3 ),
          ( object ) array( 'slug' => 'onbackorder', 'name' => esc_html__( 'Awaited', 'annasta-filters' ), 'parent' => 0, 'term_id' => -4 ),
        );

      } elseif( 'featured' === $this->module ) {
        $terms = array(
          ( object ) array( 'slug' => 'yes', 'name' => esc_html__( 'Featured products', 'annasta-filters' ), 'parent' => 0, 'term_id' => -1 ),
        );

      } elseif( 'onsale' === $this->module ) {
        $terms = array(
          ( object ) array( 'slug' => 'yes', 'name' => esc_html__( 'On sale', 'annasta-filters' ), 'parent' => 0, 'term_id' => -1 ),
        );
        
      } elseif( 'taxonomy' === $this->module ) {

        $terms_query = array( 
          'taxonomy' => $this->settings['taxonomy'], 
          'hide_empty' => false,
          'menu_order' => false,
          'orderby' => 'none',
        );

        if( $sort && isset( $this->settings['sort_by'] ) ) {
          if( 'admin' === $this->settings['sort_by'] ) {
            $terms_query['menu_order'] = true;
            $terms_query['orderby'] = 'name';
          } else {
            $terms_query['orderby'] = $this->settings['sort_by'];
          }
          $terms_query['order'] = strtoupper( $this->settings['sort_order'] );
        }

        $taxonomy_terms = get_terms( $terms_query );
        if( ! is_wp_error( $taxonomy_terms ) ) { 
          $terms = $taxonomy_terms;
        }
        
      }

      return $terms;
    }
    
    public function get_unexcluded_filter_terms( $sort = true ) {
      $all_terms = $this->get_filter_terms( $sort );
      $unexcluded_terms;
      
      if( empty( $this->settings['excluded_items'] ) ) {
        $unexcluded_terms = $all_terms;
        
      } else {
        $unexcluded_terms = array();
        
        foreach( $all_terms as $term ) {
          if( in_array( $term->term_id, $this->settings['excluded_items'] ) ) {
            continue;
          }
          $unexcluded_terms[] = $term;
        }
      }
      
      return $unexcluded_terms;
    }
    
    public function build_terms_by_parent( $terms ) {

      $terms_by_parent = array();

      foreach( $terms as $term ) {
        if( isset( $this->settings['excluded_items'] ) && in_array( $term->term_id, $this->settings['excluded_items'] ) ) {
          continue;
        }
        $terms_by_parent[$term->{'parent'}][] = $term;
      }

      return $terms_by_parent;
    }
    
  }
}

?>