Unset Payment Method for downloadable items only and a specific shipping country [closed]

My e-commerce site sells 99% to South Africans, and we use “BACS” “EFT” & Credit Card as payment options.
We do accept international orders, but can not calculate the shipping cost for international orders automatically.

So when in order is international ( not South Africa ) we want users to select the BACS / EFT payment option. We the ask them to hang-ten with payment so we can confirm the shipping costs first.

BUT if the international order contains only downloadable products ( and therefor do not require shipping ), then we want to make the Credit Card payment option available.

Website Link

I’m trying to unset a payment method called ‘mygate’ on the checkout page if both these are true:

1. The cart contains only downloadable products.
   
2. The shipping address is not South Africa ( ZA )

I’m getting there, but need some help, please.

To disable payment gateway for all countries except South Africa:

function payment_gateway_disable_country( $available_gateways ) {
    global $woocommerce;
    if ( isset( $available_gateways['mygate'] ) && $woocommerce->customer->get_country() <> 'ZA' ) {
        unset(  $available_gateways['mygate'] );
    } 
    return $available_gateways;
}
add_filter( 'woocommerce_available_payment_gateways', 'payment_gateway_disable_country' );

And to check whether the product is downloadable; something todo with:

if( ! $product->is_downloadable() )

Answer

This can be done through a foreach loop where we will check if all products are downloadable. Also oudated get_country() needs to be replaced by get_shipping_country() method in this case.

Here is your revisited code:

add_filter( 'woocommerce_available_payment_gateways', 'payment_gateway_disable_country', 20, 1 );
function payment_gateway_disable_country( $available_gateways ) {
    // Not in backend (admin)
    if( is_admin() ) 
        return $available_gateways;

    $only_downloadable_products = true;

    // Loop through cart items looking for non downloadable products
    foreach( WC()->cart->get_cart() as $cart_item ){
        if( ! $cart_item['data']->is_downloadable() ){
            $only_downloadable_products = false; // Non downloadable found
            break; // Stop the loop
        }
    }

    if( isset( $available_gateways['mygate'] ) 
    && WC()->customer->get_shipping_country() != 'ZA' // <= Changed
    && $only_downloadable_products ) { // <= Added
        unset( $available_gateways['mygate'] );
    } 
    return $available_gateways;
}

Code goes in functions.php file of your active child theme (or active theme).

Tested and and should work for you replacing 'mygate' by the correct payment gateway ID.