(Xojo Plugin) Shopify Update Inventory Level for a Product (Adjust available quantity)

Use the adjust endpoint with the location ID and inventory item ID to increase or decrease the available quantity for an inventory level:

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

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim http As New Chilkat.Http

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

// Also see: How to retrieve inventory levels

http.Accept = "application/json"

// The following JSON is sent in the request body:

// {
//   "location_id": 6884556842,
//   "inventory_item_id": 12250274365496,
//   "available_adjustment": 1
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

Dim jsonRequestBody As New Chilkat.JsonObject
Dim success As Boolean
success = jsonRequestBody.UpdateInt("location_id",6884556842)
success = jsonRequestBody.UpdateInt("inventory_item_id",12250274365496)
success = jsonRequestBody.UpdateInt("available_adjustment",1)

Dim url As String
url = "https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels/adjust.json"

Dim resp As Chilkat.HttpResponse
resp = http.PText("POST",url,jsonRequestBody.Emit(),"utf-8","application/json",False,False)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

System.DebugLog("Response Status Code: " + Str(resp.StatusCode))

Dim jsonResponse As New Chilkat.JsonObject
success = jsonResponse.Load(resp.BodyStr)
jsonResponse.EmitCompact = False
System.DebugLog(jsonResponse.Emit())

If (resp.StatusCode >= 300) Then
    System.DebugLog("Failed.")

    Return
End If

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

// {
//   "inventory_level": {
//     "inventory_item_id": 12250274365496,
//     "location_id": 6884556842,
//     "available": 9,
//     "updated_at": "2018-06-26T15:04:49-04:00",
// ...
//     "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
// ...
//   }
// }
// 

Dim inventory_levelInventory_item_id As Int32
inventory_levelInventory_item_id = jsonResponse.IntOf("inventory_level.inventory_item_id")
Dim inventory_levelLocation_id As Int32
inventory_levelLocation_id = jsonResponse.IntOf("inventory_level.location_id")
Dim inventory_levelAvailable As Int32
inventory_levelAvailable = jsonResponse.IntOf("inventory_level.available")
Dim inventory_levelUpdated_at As String
inventory_levelUpdated_at = jsonResponse.StringOf("inventory_level.updated_at")
Dim inventory_levelAdmin_graphql_api_id As String
inventory_levelAdmin_graphql_api_id = jsonResponse.StringOf("inventory_level.admin_graphql_api_id")