Woocommerce Hide Products Until A Specific Product Is Purchased

hpuspp.php

// Hide Products Until A Specific Product Is Purchased

function ghostie_pepper_until_purchase( $purchasing_product_id ) {
  // Check if user has purchased the purchasing product
  if ( wc_customer_bought_product( get_current_user_id(), $purchasing_product_id ) ) {
    return;
  }

  // If not, hide the specified products
  $products_to_hide = array( 123, 456, 789 ); // replace with your product IDs
  foreach ( $products_to_hide as $product_id ) {
    $product = wc_get_product( $product_id );
    if ( $product ) {
      $product->set_catalog_visibility( 'hidden' );
      $product->save();
    }
  }
}

add_action( 'wp', function() {
  // Replace 789 with the ID of the product that needs to be purchased to unhide the other products
  ghostie_pepper_until_purchase( 789 );
} );