detain/myadmin-amazon-payments

<?php

    /**
     * Amazon Functionality
     *
     * @author Joe Huss <detain@interserver.net>
     * @copyright 2019
     * @package MyAdmin
     * @category Billing
     */

    function amazon_obtain_profile()
    {
        $c = curl_init('https://api.amazon.com/auth/o2/tokeninfo?access_token='.urlencode($_REQUEST['access_token']));
        curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
        $r = curl_exec($c);
        curl_close($c);
        $d = json_decode($r);
        if ($d->aud != 'YOUR-CLIENT-ID') {
            // the access token does not belong to us
            header('HTTP/1.1 404 Not Found');
            echo 'Page not found';
            exit;
        }
        // exchange the access token for user profile
        $c = curl_init('https://api.sandbox.amazon.com/user/profile');
        curl_setopt($c, CURLOPT_HTTPHEADER, ['Authorization: bearer '.$_REQUEST['access_token']]);
        curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
        $r = curl_exec($c);
        curl_close($c);
        $d = json_decode($r);
        echo sprintf('%s %s %s', $d->name, $d->email, $d->user_id);
    }

    /**
     * @return string
     */
    function amazon_addressbook_widget()
    {
        return '<div id="addressBookWidgetDiv">
</div>
<script>
new OffAmazonPayments.Widgets.AddressBook({
    sellerId: "'.AMAZON_SELLER_ID.'",
    amazonOrderReferenceId: amazonOrderReferenceId,
        // amazonOrderReferenceId obtained from Button widget
    onAddressSelect: function(orderReference) {
        // Replace the following code with the action that you want to perform
        // after the address is selected.
        // The amazonOrderReferenceId can be used to retrieve
        // the address details by calling the GetOrderReferenceDetails
        // operation. If rendering the AddressBook and Wallet widgets on the
        // same page, you should wait for this event before you render the
        // Wallet widget for the first time.
    },
    design: {
        size : {width:"400px", height:"260px"}
    },
    onError: function(error) {
        // your error handling code
    }
}).bind("addressBookWidgetDiv");
</script>
';
    }

    /**
     * @return string
     */
    function amazon_wallet_widget()
    {
        return '<div id="walletWidgetDiv">
</div>
<script>
new OffAmazonPayments.Widgets.Wallet({
    sellerId: "'.AMAZON_SELLER_ID.'",
    amazonOrderReferenceId: amazonOrderReferenceId,
    // amazonOrderReferenceId obtained from Button widget
    design: {
        size : {width:"400px", height:"260px"}
        },
        onPaymentSelect: function(orderReference) {
            // Replace this code with the action that you want to perform
            // after the payment method is selected.
        },
        onError: function(error) {
            // your error handling code
        }
}).bind("walletWidgetDiv");
</script>
';
    }