How to make Paypal Payouts on a Node.Js environment - node.js

Question

I am trying to execute a PayPal Payout on Node.Js environment, but I can't seem to wrap my head around it.
Could you please help me get the parameters right, and maybe where I should re-organize the code, and eventually start heading in the right direction?
Thank you all in advance.
var PAYPAL_API = "https://api-m.sandbox.paypal.com";
app.post("/my-api/execute-payment/", function (req, res) {
// 2. Get the payment ID and the payer ID from the request body.
var paymentID = req.body.paymentID;
var payerID = req.body.payerID;
let requestBody = {
"sender_batch_header": {
"sender_batch_id": "Payouts_2018_100007",
"email_subject": "You have a payout!",
"email_message": "You have received a payout! Thanks for using our service!",
},
"items": [
{
"recipient_type": "EMAIL",
"amount": {
"value": "9.87",
"currency": "USD",
},
"note": "Thanks for your patronage!",
"sender_item_id": "201403140001",
"receiver": "rev_buyer#personal.example.com",
"alternate_notification_method": {
"phone": {
"country_code": "91",
"national_number": "9999988888",
},
},
"notification_language": "fr-FR",
},
{
"recipient_type": "PAYPAL_ID",
"amount": {
"value": "5.32",
"currency": "USD",
},
"note": "Thanks for your patronage!",
"sender_item_id": "201403140003",
"receiver": "xXXXXXX-50mQSYBJpg_OWguVkwYYYYYYY-ZAFupw-aaaaa-nnnnnnn",
},
],
};
request.post(
PAYPAL_API + "/v1/payments/payouts",
{
auth: {
user: CLIENT,
pass: SECRET,
},
requestBody,
json: true,
},
function (err, response) {
if (err) {
console.error(err);
return res.sendStatus(500);
}
// 4. Return a success response to the client
res.json({
status: "success",
});
}
);
});

Answer 1

Have you tried the Payouts-NodeJS-SDK ?
The main issue with the custom code above is that you aren't first requesting an OAuth 2.0 access_token, and then using the access_token for your REST API call.
See the documentation: https://developer.paypal.com/docs/api/overview/#get-an-access-token
The SDK abstracts this step for you.