const axios = require('axios');

const accessToken = async () => {

    // Step 1: Create the HTTP Headers and GET request
    const client_id = 'your_client_id';
    const client_secret = 'your_client_secret';
    // For production - api.moneygram.com & For test - sandboxapi.moneygram.com
    const host = "sandboxapi.moneygram.com";
    const url = 'https://' + host + '/oauth/accesstoken?grant_type=client_credentials';

    const encodedCredentials = Buffer.from(client_id + ':' + client_secret).toString('base64');
    const headers = {
        'Content-Type': 'application/json',
        'Authorization': 'Basic ' + encodedCredentials,
    };

    try {
        // Step 2: Send the request and obtain the response
        axios.get(url, { headers })
            .then(function (response) {
                // Step 3: Parse the response and extract the access token
                const accessToken = response.data.access_token;
                console.log('Access Token:', accessToken);
                const expiresIn = response.data.expires_in;
                console.log('Token Expires In:', expiresIn);
            })
            .catch(function (error) {
                // Handle any errors that occurred during the request
                console.error('Error:', error.message);
            });

    } catch (error) {
        console.error('Error:', error.message);
    }
};

accessToken();

import requests
import base64
import json

def access_token():

    # Step 1: Create the HTTP Headers and GET request
    client_id = 'your_client_id';
    client_secret = 'your_client_secret';
    # For production - api.moneygram.com & For test - sandboxapi.moneygram.com
    host = "sandboxapi.moneygram.com";
    url = 'https://' + host + '/oauth/accesstoken?grant_type=client_credentials';

    credentials = f"{client_id}:{client_secret}"
    encoded_credentials = base64.b64encode(credentials.encode('utf-8')).decode('utf-8')
    headers = {
        "Content-Type": "application/json",
        "Authorization": "Basic " + encoded_credentials
    }

    try:
        # Step 2: Send the request and obtain the response
        response = requests.get(url, headers=headers)

        # Step 3: Parse the response and extract the access token
        if response.status_code == 200:
            parsed_response = json.loads(response.text)
            accessToken = parsed_response['access_token'];
            print("Access Token:"+ accessToken)
            expiresIn = parsed_response['expires_in'];
            print("Token Expires In:"+ expiresIn)
        else:
            # Print the error message if request fails
            print("Request failed with status code:", response.status_code)

    except requests.exceptions.RequestException as e:
        # Print any error that occurred during the request
        print("An error occurred:", e)

access_token()

package access_token;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;

import java.io.StringReader;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.util.Base64;

public class AccessToken {

    public static void main(String[] args) {

        // Replace these values with your actual client credentials and token endpoint host
        String clientId = "your_client_id";
        String clientSecret = "your_client_secret";

        // For production - api.moneygram.com & For test - sandboxapi.moneygram.com
        String host = "sandboxapi.moneygram.com";
        String tokenEndpoint = "https://" + host + "/oauth/accesstoken?grant_type=client_credentials";

        // Step 1: Create the HTTP client and GET request
        HttpClient httpClient = HttpClient.newHttpClient();
        String credentials = clientId + ":" + clientSecret;
        String encodedCredentials = Base64.getEncoder().encodeToString(credentials.getBytes());
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(tokenEndpoint))
                .GET()
                .setHeader("Authorization", "Basic " + encodedCredentials)
                .build();

        try {
            // Step 2: Send the request and obtain the response
            HttpResponse<String> response = httpClient.send(request, BodyHandlers.ofString());

            // Retrieve the status code and body from the response
            int statusCode = response.statusCode();
            System.out.println("Status Code: " + statusCode);

            // Step 3: Parse the response and extract the access token
            if (statusCode == 200) {
                String responseBody = response.body();
                JsonReader reader = Json.createReader(new StringReader(responseBody));
                JsonObject jsonObject = reader.readObject();
                String accessToken = jsonObject.getString("access_token");
                System.out.println("Access Token: " + accessToken);
                String expiresIn = jsonObject.getString("expires_in");
                System.out.println("Token Expires In: " + expiresIn);
            }
        } catch (Exception e) {
            e.printStackTrace();
            // TODO: handle exception
        }
    }
}

curl --request GET \
     --url 'https://sandboxapi.moneygram.com/oauth/accesstoken?grant_type=client_credentials' \
     --header 'accept: application/json' \
     --header 'authorization: Basic ******************************************************************'

{
    "refresh_token_expires_in": "0",
    "api_product_list": "[Adaptor-Ext]",
    "api_product_list_json": [
        "Adaptor-Ext"
    ],
    "organization_name": "moneygram",
    "developer.email": "[email protected]",
    "token_type": "BearerToken",
    "issued_at": "1681306750858",
    "client_id": "********************************",
    "access_token": "****************************",
    "application_name": "**********-**-****-****-************",
    "scope": "",
    "expires_in": "3599",
    "refresh_count": "0",
    "status": "approved"