(Swift 3,4,5...) 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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let http = CkoHttp()!

    http.login = "SHOPIFY_PRIVATE_API_KEY"
    http.password = "SHOPIFY_PRIVATE_API_KEY"

    http.accept = "application/json"

    var resp: CkoHttpResponse? = http.quickRequest("GET", url: "https://{shop}.myshopify.com/admin/api/2020-04/products/{product_id}/variants/{variant_id}.json")
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    print("Response Status Code: \(resp!.statusCode.intValue)")

    let jsonResponse = CkoJsonObject()!
    jsonResponse.load(resp!.bodyStr)
    jsonResponse.emitCompact = false
    print("\(jsonResponse.emit()!)")

    if resp!.statusCode.intValue != 200 {
        print("Failed.")
        resp = nil
        return
    }

    resp = nil

    // 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: Int = jsonResponse.int(of: "id").intValue
    var product_id: Int = jsonResponse.int(of: "product_id").intValue
    var title: String? = jsonResponse.string(of: "title")
    var inventory_item_id: Int = jsonResponse.int(of: "inventory_item_id").intValue
    var admin_graphql_api_id: String? = jsonResponse.string(of: "admin_graphql_api_id")

}