WooCommerce Tip: Automatically add a product to the cart depending on the cart total

To automatically add a product to the cart depending on total order, use the following code:

/**
* Add product depending on the cart total
*/
add_action( 'template_redirect', 'add_product_to_cart' );
function add_product_to_cart() {
if ( ! is_admin() ) {
global $woocommerce;
$product_id = 2831; //replace with your product id
$found = false;
$cart_total = 50; //replace with your cart total needed to add above item

if( $woocommerce->cart->total >= $cart_total ) {
//check if product already in cart
if ( sizeof( $woocommerce->cart->get_cart() ) > 0 ) {
foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
$_product = $values['data'];
if ( $_product->get_id() == $product_id )
$found = true;
}
// if product not found, add it
if ( ! $found )
$woocommerce->cart->add_to_cart( $product_id );
} else {
// if no products in cart, add it
$woocommerce->cart->add_to_cart( $product_id );
}
}
}
}