WP Simple Pay: {subtotal} Smart Tag

/**

 * @link https://library.wpcode.com/snippet/r5plvkeo/

 */

add_filter(

	'simpay_payment_details_template_tags',

	function( $smart_tags ) {

		$smart_tags[] = 'subtotal';

		return $smart_tags;

	}

);

add_filter(

	'simpay_payment_confirmation_template_tag_subtotal',

	function( $value, $payment_confirmation_data ) {

		$subscription = current( $payment_confirmation_data['subscriptions'] );

		if ( $subscription ) {

			$payment = $subscription->latest_invoice->payment_intent;

		} else {

			$payment = current( $payment_confirmation_data['paymentintents'] );

		}

		return simpay_format_currency(

			$payment->metadata->simpay_unit_amount * $payment->metadata->simpay_quantity,

			$payment->currency

		);

	},

	10,

	2

);