fKCart Rewards - Total Fallback

fKCart Rewards - Total Fallback

add_filter( 'fkcart_reward_total', 'fkcart_rewards_total_fallback', 999, 3 );

function fkcart_rewards_total_fallback( $total, $calculation_mode, $front ) {
	if ( 'total' !== $calculation_mode ) {
		return $total;
	}
	if ( is_null( WC()->cart ) || WC()->cart->is_empty() ) {
		return $total;
	}
	// Only fallback when total is 0 or negative but cart has items
	if ( (float) $total > 0 ) {
		return $total;
	}

	$cart = WC()->cart;
	$calculated = (float) $cart->get_cart_contents_total()
		+ (float) $cart->get_fee_total()
		+ (float) $cart->get_shipping_total()
		+ (float) $cart->get_total_tax()
		- (float) $cart->get_discount_total();

	if ( $cart->display_prices_including_tax() ) {
		$calculated -= (float) $cart->get_discount_tax();
	}

	$calculated = max( 0, $calculated );

	// Add session coupons discount (same as get_cart_total does)
	if ( class_exists( '\FKCart\Pro\Rewards' ) && method_exists( '\FKCart\Pro\Rewards', 'get_session_coupons_discount_total' ) ) {
		$calculated += (float) \FKCart\Pro\Rewards::get_session_coupons_discount_total();
	}

	return $calculated > 0 ? $calculated : $total;
}