(Objective-C) 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

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#import <CkoHttp.h>
#import <CkoHttpResponse.h>
#import <CkoJsonObject.h>
#import <NSString.h>

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

CkoHttp *http = [[CkoHttp alloc] init];

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

http.Accept = @"application/json";

CkoHttpResponse *resp = [http QuickRequest: @"GET" url: @"https://{shop}.myshopify.com/admin/api/2020-04/products/{product_id}/variants/{variant_id}.json"];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Response Status Code: ",[resp.StatusCode intValue]);

CkoJsonObject *jsonResponse = [[CkoJsonObject alloc] init];
[jsonResponse Load: resp.BodyStr];
jsonResponse.EmitCompact = NO;
NSLog(@"%@",[jsonResponse Emit]);

if ([resp.StatusCode intValue] != 200) {
    NSLog(@"%@",@"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"
// }
// 

int id = [[jsonResponse IntOf: @"id"] intValue];
int product_id = [[jsonResponse IntOf: @"product_id"] intValue];
NSString *title = [jsonResponse StringOf: @"title"];
int inventory_item_id = [[jsonResponse IntOf: @"inventory_item_id"] intValue];
NSString *admin_graphql_api_id = [jsonResponse StringOf: @"admin_graphql_api_id"];