<?php

  class ThemeBlocks {
    	/** Singtone class instance holder
     * 
     */
    protected static $instance;

    /**
     * Create class instance
     */
    public static function instance(){
      if ( is_null( self::$instance ) ) {
        self::$instance = new self();
      }
      return self::$instance;
    }

    public $blocks = [
      
    ];
    
    public $dynamic_blocks = [
      "advanced-search/"    => "advanced_search",
      "product-attributes/"    => "product_attribute"
    ];

    function __construct(){
      add_action( 'init', [ $this, 'blocks_init' ] );
      add_action( 'rest_api_init', [ $this, 'product_atteributes' ]);
    }

    function blocks_init() {
      if( count($this->blocks) ) {
        foreach( $this->blocks as $block_name  ) {
          register_block_type( get_template_directory() . 'public/blocks/'.$block_name );
        }
      }
      
      if( count($this->dynamic_blocks) ) {
        foreach( $this->dynamic_blocks as $block_name => $callback ) {
          register_block_type( get_template_directory() . '/public/blocks/'.$block_name,  array( 'render_callback' => [$this, $callback] ) );
        }
      }

    }

    function display_product_attribute_terms_dropdown($attribute_name){
      $terms = get_terms( $attribute_name, array('hide_empty' => false) );
      if ($terms) {
          echo '<select  name="' . str_replace( "pa_", "filter_", $attribute_name ) . '">';
          echo '<option value="" selected disabled>'.esc_html__("Select", 'lifttruck').' '.str_replace( "_", " ", $attribute_name ).'</option>'; // Placeholder option
          foreach ($terms as $term) {
              echo '<option value="' . $term->slug . '">' . $term->name . '</option>';
          }
          echo '</select>';
      } else {
          echo esc_html__("No terms found for attribute","lifttruck") . ' ' . $attribute_name;
      }
    }

    function advanced_searsh( $block_content, $block ) {
      ob_start();
     
      ?> 
        <div >
          <form class="wd-block-webdevia-advanced-searsh" role="search" method="get"  id="categoryForm" action="<?php class_exists( 'WooCommerce' ) ? print get_permalink( wc_get_page_id( 'shop' ) ) : ''; ?>">
                <?php
                $attributes = wc_get_attribute_taxonomies();

              if ( $attributes ) {
                  foreach ( $attributes as $attribute ) {
                    $this->display_product_attribute_terms_dropdown('pa_'.$attribute->attribute_name);
                  }
              }
                      
                    
                      
                  //  echo $block;
                      ?>
                       <input type="submit" class="wp-block-button__link wp-element-button" value="Search">
          </form>
        </div>
      <?php
      return ob_get_clean();
    }

  function product_attribute($attributes, $block)  {
    ob_start();

    if ($attributes['showlabel'] == true) {
      echo  '<p>' . $attributes['productattributes'] . ':</p>';
    }
    $terms = wc_get_product_terms(get_the_ID(), "pa_" . $attributes['productattributes'], array('hide_empty' => false));

    if ($terms) {
      $count = count($terms); // Get the total number of terms
      foreach ($terms as $key => $term) {
        echo '<label>' . $term->name . '</label>';
        // If it's not the last iteration, append a comma
        if ($key < $count - 1) {
          echo ', ';
        }
      }
    }
    return ob_get_clean();
  }

  function get_attribute_options() {
      // Your logic to generate attribute options goes here
    $attributes = wc_get_attribute_taxonomies();
  
    if ( $attributes ) {
      foreach ( $attributes as $attribute ) {
        $options[] =$attribute->attribute_name;
      }
    }
     
      return $options;
  }
  
  // Register REST API endpoint
   function product_atteributes() {
      register_rest_route( 'wdmp/v1', '/attribute-options', array(
          'methods' => 'GET',
          'callback' => [$this , 'get_attribute_options'],
          'permission_callback' => '__return_true'
      ) );
  } 
    
  }

  ThemeBlocks::instance();