Woocomerce kupóny

Vytvorenie kupónu

function vytvor_kupon() {

    $coupon_code = 'MOJKUPON'; // Code
    $amount = '10'; // Amount
    $discount_type = 'fixed_cart'; // Type: fixed_cart, percent, fixed_product, percent_product
    $coupon = array(
    'post_title' => $coupon_code,
    'post_content' => '',
    'post_status' => 'publish',
    'post_author' => 1,
    'post_type' => 'shop_coupon');

    if( !in_array($coupon['post_title'], coupon_list() ) ) {  // iba ak kupon este neexistuje

        $new_coupon_id = wp_insert_post( $coupon );
    }
        // Add meta
        update_post_meta( $new_coupon_id, 'discount_type', $discount_type );
        update_post_meta( $new_coupon_id, 'coupon_amount', $amount );
        update_post_meta( $new_coupon_id, 'individual_use', 'no' );
        update_post_meta( $new_coupon_id, 'product_ids',  vypis_podukty_s_tagom ()) ;
        update_post_meta( $new_coupon_id, 'exclude_product_ids', '');
        update_post_meta( $new_coupon_id, 'usage_limit', '' );
        update_post_meta( $new_coupon_id, 'expiry_date', '' );
        update_post_meta( $new_coupon_id, 'apply_before_tax', 'yes' );
        update_post_meta( $new_coupon_id, 'free_shipping', 'no' );
  

}

Vráti zoznam všetkých kupónov, konkrétne ich atribúty name a id

function coupon_list() {
  $coupon_posts = get_posts( array(
      'posts_per_page'   => -1,
      'orderby'          => 'name',
      'order'            => 'asc',
      'post_type'        => 'shop_coupon',
      'post_status'      => 'publish',
  ) );

  $coupon_codes = []; // Initializing

  // Push to array
  foreach ( $coupon_posts as $coupon_post ) {
      $coupon_codes[$coupon_post->post_name] = $coupon_post->ID;   // vytiahnem meno a id kupónu
  }

  // Return coupon array
  return $coupon_codes;
}

Prejde všetky produkty a vytvori zoznam ID všetkých produktov ktoré majú danú značku

function moj_kupon(){
    $tag = 'Hendi';
    $data_tags = [];

    $wc_query = new WP_Query( array(
        'post_type' => 'product',
        'post_status' => 'publish',  
        'posts_per_page' => 3,
        'product_tag' => $tag,
    ) );
    $i = 0;
    ?>

     <?php if ($wc_query->have_posts()) : ?>
        <?php while ($wc_query->have_posts()) :
            $wc_query->the_post();
            $id = get_the_ID();
           // $sku = get_post_meta( $id, '_sku', true );
            array_push($data_tags,  $id . ', ' );
        ?>
        <?php endwhile; ?>
        <?php wp_reset_postdata(); ?>

    <?php else:  ?>

     <?php endif; ?>
     <?php

        return  implode(" ",$data_tags) ;  //zmeni pole na string s IDčkami
 
}

Hooks ktoré zachytia pouzite kupónu a vyvolajú funkciu

//filter pre validaciu produktov
add_filter("woocommerce_coupon_is_valid","plugin_coupon_validation",10,3);
function plugin_coupon_validation($valid, $coupon, $product) {
   if( 'hendiskusobne' === strtolower($coupon->code) ) {
        foreach( WC()->cart->get_cart() as $cart_item ){
               $id = $cart_item['product_id'];

               $term_array = [];
               $terms = wp_get_post_terms( $id, 'product_tag' );
               foreach ( $terms as $term ) {
                   array_push( $term_array, $term->name);
               }
                  
               if( in_array("Hendi", $term_array) ){
                   // echo 'nie je ';
               }
               else {
                    // $valid=false;
                     return false;
               }
        }
   }

   return true; 
}



// filter pre validáciu kupónu
//add_filter( 'woocommerce_coupon_is_valid_for_product', 'wphelp_exclude_product_coupons', 9999, 4 );
function wphelp_exclude_product_coupons( $valid, $product, $coupon, $values ) {
   $id = $product->id;
   //echo get_post_meta( $id, 'product_tag', true );
   $terms = wp_get_post_terms( $id, 'product_tag' );
   foreach ( $terms as $term ) {
         $term_array[] = $term->name;
    }

    if( in_array("Hendi", $term_array) ){
         print_r($term_array);
    }
}



// hook na aplikovanie kupónu
//add_action( 'woocommerce_applied_coupon', 'wc_ninja_apply_coupon' );
function wc_ninja_apply_coupon( $coupon_code ) {
	if ( 'hendiskusobne' === $coupon_code ) {
           if(current_user_can( 'administrator' )){ 
               echo '<br>hendiskusobne<br>';
               $coupon_id = 110169;
               update_post_meta( $coupon_id, 'product_ids', ', ' .  moj_kupon() ) ;
           }
	}
}

Zdroje:
https://quadlayers.com/exclude-woocommerce-product-from-coupons/
https://www.phpdevelopment.ca/2017/04/22/creating-a-custom-woocommerce-coupon/
https://themes.artbees.net/blog/how-to-check-if-a-woocommerce-coupon-is-applied/
https://quadlayers.com/edit-woocommerce-coupon-code/
https://storepro.io/learn/how-to-create-a-coupon-programmatically-in-woocommerce/
https://stackoverflow.com/questions/72270940/get-a-list-of-available-woocommerce-coupons-in-a-select-field

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