payPal.rb

import {fetch} from 'wix-fetch';

export async function getAccess() {
 const response = await fetch("https://api.sandbox.paypal.com/v1/oauth2/token", {
        method: 'post',
        headers: {
             "Content-Type": "application/x-www-form-urlencoded",
             "Authorization": "Basic " + "" //ENTER ENCODED STRING
        },
        body: "grant_type=client_credentials"
    });
 const ret = await response.json();
 return ret;
}

export async function order(token, item, amount) {
 var orderObj = {
 "intent": "CAPTURE",
 "application_context": {
 "return_url": "URL_HERE",
 "cancel_url": "URL_HERE",
 "landing_page": "BILLING",
 "payment_method": {
 "payee_preferred": "IMMEDIATE_PAYMENT_REQUIRED"
        }
    },
 "purchase_units": [
        {
 "description": item,
 "amount": {
 "currency_code": "USD",
 "value": Number(amount),
 "breakdown": {
 "item_total": {
 "currency_code": "USD",
 "value": Number(amount)
            }
            }
        },
 "items": [{
 "name": "Item Name - " + item,
 "unit_amount": {
 "currency_code": "USD",
 "value": Number(amount)
            },
 "quantity": "1"
        }]
        }
    ]
    };
 const response = await fetch("https://api.sandbox.paypal.com/v2/checkout/orders", {
    method: 'post',
    headers: {
      "Content-Type": "application/json",
      "Authorization": "Bearer " + token
    },
    body: JSON.stringify(orderObj)
    });
 const ret = await response.json();
 return ret;
}

export async function capturePayment(url) {
 const response = await fetch(`${url}`, {
    method: 'post',
    headers: {
      "Content-Type": "application/json",
      "Authorization": "Basic " + "" //ENTER ENCODED STRING
    }
    });
 const ret = await response.json();
 return ret;
}