freemius-appsumo-ajax-form.php

<?php

// AppSumo AJAX form submission
add_action( 'wp_ajax_nopriv_deo_appsumo_submission', 'deo_appsumo_submission' );
add_action( 'wp_ajax_deo_appsumo_submission', 'deo_appsumo_submission' );

function deo_appsumo_submission() {

	check_ajax_referer( 'deo_ajax_nonce', 'nonce' );
	
	$consent = false;

	// Sanitize input data
	if ( ! empty( $_POST['name'] ) ) {
		$name = filter_var( $_POST['name'], FILTER_SANITIZE_STRING );
	}
	if ( ! empty( $_POST['email'] ) ) {
		$email = filter_var( $_POST['email'], FILTER_SANITIZE_EMAIL );
	}
	if ( ! empty( $_POST['appsumoCode'] ) ) {	
		$appsumo_code = $_POST['appsumoCode'];
	}
	if ( 'true' === $_POST['consent'] ) {
		$consent = true;
	}

	// Use Freemius API to redeem the license key and associate it with the buyer’s details
	require_once DEOTHEME_DIR . '/includes/freemius-php-sdk-master/freemius/FreemiusBase.php';
	require_once DEOTHEME_DIR . '/includes/freemius-php-sdk-master/freemius/Freemius.php';

	define( 'FS__API_SCOPE', 'developer' );
	define( 'FS__API_DEV_ID', 1234 );
	define( 'FS__API_PUBLIC_KEY', 'pk_YOUR_PUBLIC_KEY' );
	define( 'FS__API_SECRET_KEY', 'sk_YOUR_SECRET_KEY' );

	// Init SDK.
	$api = new Freemius_Api(FS__API_SCOPE, FS__API_DEV_ID, FS__API_PUBLIC_KEY, FS__API_SECRET_KEY);

	// Create license
	$license = $api->Api("/plugins/6922/licenses.json", 'PUT', array(
		'license_key'  		   => urlencode($appsumo_code),
		'email'        		   => $email,
		'name'         		   => $name,
		'is_marketing_allowed' => $consent,
	));

	if ( is_object( $license ) && ! empty( $license->user_id ) && is_numeric( $license->user_id ) ) {
		// Successful activation, email sent.
		wp_send_json_success( esc_html__( 'Successfuly redeemed, check your email.', 'elementorkit' ) );
	} else if ( ! empty( $license->error ) ) {
		$error = $license->error->message;
		wp_send_json_error( esc_html( $error ) );
	} else {
		// Unexpected message.
		wp_send_json_error( esc_html__( 'Something went wrong, please try again later.', 'elementorkit' ) );
	}	
}