Is there a plugin for Woocommerce - buy 5 times and get a gift for the 5th time?

Question

Web development

Hello, I'm looking for a solution (ideally a plugin, but a hook is also possible) for the following problem. For example, a user makes 5 orders, and when he orders 5 times, a T-shirt (or any product) is added to his cart for free. Does such a solution exist?

Answer 1

1) Download https://srd.wordpress.org/plugins/first-order-discount/
2) Edit the plugin code (I also have +10% discount for registered users)

function first_order_add_fee() {
  global $wpdb, $woocommerce;
  if ( is_user_logged_in() ) {
    $customer_id = get_current_user_id();
    $orderNumCheck = wc_get_customer_order_count( $customer_id ); // count orders by current customer
    $options = get_option( 'first_order_add_settings' );
    $discountType = $options['first_order_choose'];
    $discountValue = $options['first_order_add_value'];
    $subtotal = WC()->cart->cart_contents_total;
    $discount = $discountValue/100;
      
    $check5order = $orderNumCheck + 1;
    
    if ($check5order % 5 == 0) {
    
          $product_id = 1802;
        $found = false;
        //check if product already in cart
        if ( sizeof( WC()->cart->get_cart() ) > 0 ) {
          foreach ( WC()->cart->get_cart() as $cart_item_key => $values ) {
            $_product = $values['data'];
            if ( $_product->id == $product_id )
              $found = true;
          }
          // if product not found, add it
          if ( ! $found )
            WC()->cart->add_to_cart( $product_id );
        } else {
          // if no products in cart, add it
          WC()->cart->add_to_cart( $product_id );
        }
    }
    
    WC()->cart->add_fee( 'Скидка 10%', -$subtotal*$discount );
    
  }
}

function add_custom_price( $cart_object ) {
    foreach ( $cart_object->cart_contents as $key => $value ) {
    if ($value["product_id"] == "1802") {
      $currPrice = $value['data']->price;
      $currQuant = $value["quantity"];
      $totalPrice = $currPrice * $currQuant;
      $salePrice = $totalPrice - $currPrice;
      $salingPrice = $salePrice/$currQuant;
      $value['data']->price = $salingPrice;
    }
    }
}

add_action( 'woocommerce_before_calculate_totals', 'add_custom_price' );
add_action( 'woocommerce_cart_calculate_fees','first_order_add_fee' );