(Node.js) Shopify Query a variant for its inventory item ID

Query a product variant to find the ID of its inventory item.

For more information, see https://shopify.dev/tutorials/manage-product-inventory-with-admin-api#retrieve-the-inventory-levels-for-a-product-variant

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var http = new chilkat.Http();

    http.Login = "SHOPIFY_PRIVATE_API_KEY";
    http.Password = "SHOPIFY_PRIVATE_API_KEY";

    http.Accept = "application/json";

    // resp: HttpResponse
    var resp = http.QuickRequest("GET","https://{shop}.myshopify.com/admin/api/2020-04/products/{product_id}/variants/{variant_id}.json");
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    console.log("Response Status Code: " + resp.StatusCode);

    var jsonResponse = new chilkat.JsonObject();
    jsonResponse.Load(resp.BodyStr);
    jsonResponse.EmitCompact = false;
    console.log(jsonResponse.Emit());

    if (resp.StatusCode !== 200) {
        console.log("Failed.");

        return;
    }

    // Sample output...
    // (See the parsing code below..)
    // 
    // Use the this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    // {
    //   "id": 12195009364024,
    //   "product_id": 1321541042232,
    //   "title": "xs",
    // ...
    //   "inventory_item_id": 12250274365496,
    // ...
    //   "admin_graphql_api_id": "gid://shopify/ProductVariant/12195009364024"
    // }
    // 

    var id = jsonResponse.IntOf("id");
    var product_id = jsonResponse.IntOf("product_id");
    var title = jsonResponse.StringOf("title");
    var inventory_item_id = jsonResponse.IntOf("inventory_item_id");
    var admin_graphql_api_id = jsonResponse.StringOf("admin_graphql_api_id");

}

chilkatExample();