WooCommerce Subscriptions - Action on initial payment - wordpress

Question

I am using the WooCommerce subscriptions plugin, in particular the woocommerce_subscription_payment_complete function.
I am using it like this:
add_action('woocommerce_subscription_payment_complete','subscription_created');
function subscription_created($subscription) {
echo 'Run when subscription payment is complete';
}
This works, but it also fires when a renewal payment completes. Does anybody know of a way to determine if the payment was for an initial subscription payment rather than a renewal?

Answer 1

You could use woocommerce_checkout_subscription_created, however the problem here is that it will fire before payment is processed - and I'm assuming you need to fire your even after payment has been successful.
One way to approach this is to set meta on the subscription post, that denotes whether your custom function has been run, and checking that meta with an if statement like this:
add_action('woocommerce_subscription_payment_complete','subscription_created');
function subscription_created($subscription) {
//check if meta exists/is not true
if (!get_post_meta($subscription->id, 'has_my_function_run', true)) {
//update meta to bool(true)
update_post_meta($subscription->id, 'has_my_function_run', true);
//run your function
echo 'Run when subscription payment is complete';
}
}
I am sure there is a better way to approach this though, so keep an eye out for other answers. It might be a good idea to look into hooking into woocommerce_order_status_processing, checking if it contains a subscription product, and then running your function, but that won't work if WooCommerce generates a new order for every subscription renewal.