(Delphi DLL) Shopify Retrieve the item's inventory levels

After you have the inventory item ID, you can use it with the InventoryLevel resource to find the levels and locations for the 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 for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
resp: HCkHttpResponse;
jsonResponse: HCkJsonObject;
inventory_item_id: Integer;
location_id: Integer;
available: Integer;
updated_at: PWideChar;
admin_graphql_api_id: PWideChar;
i: Integer;
count_i: Integer;

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

http := CkHttp_Create();

CkHttp_putLogin(http,'SHOPIFY_PRIVATE_API_KEY');
CkHttp_putPassword(http,'SHOPIFY_PRIVATE_API_KEY');

CkHttp_putAccept(http,'application/json');

// How to get the inventory item ID

resp := CkHttp_QuickRequest(http,'GET','https://{shop}.myshopify.com/admin/api/2020-04/inventory_levels.json?inventory_item_ids={inventory_item_id}');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add('Response Status Code: ' + IntToStr(CkHttpResponse_getStatusCode(resp)));

jsonResponse := CkJsonObject_Create();
CkJsonObject_Load(jsonResponse,CkHttpResponse__bodyStr(resp));
CkJsonObject_putEmitCompact(jsonResponse,False);
Memo1.Lines.Add(CkJsonObject__emit(jsonResponse));

if (CkHttpResponse_getStatusCode(resp) <> 200) then
  begin
    Memo1.Lines.Add('Failed.');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;

CkHttpResponse_Dispose(resp);

// 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_levels": [
//     {
//       "inventory_item_id": 12250274365496,
//       "location_id": 6884556842,
//       "available": 8,
//       "updated_at": "2018-06-18T11:49:50-04:00",
//       "admin_graphql_api_id": "gid://shopify/InventoryLevel/6485147690?inventory_item_id=12250274365496"
//     },
//     {
//       "inventory_item_id": 12250274365496,
//       "location_id": 13968834616,
//       "available": 50,
//       "updated_at": "2018-06-26T14:44:30-04:00",
//       "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570506808?inventory_item_id=12250274365496"
//     },
//     {
//       "inventory_item_id": 12250274365496,
//       "location_id": 13968867384,
//       "available": 100,
//       "updated_at": "2018-06-26T14:44:30-04:00",
//       "admin_graphql_api_id": "gid://shopify/InventoryLevel/13570539576?inventory_item_id=12250274365496"
//     }
//   ]
// }
// 

i := 0;
count_i := CkJsonObject_SizeOfArray(jsonResponse,'inventory_levels');
while i < count_i do
  begin
    CkJsonObject_putI(jsonResponse,i);
    inventory_item_id := CkJsonObject_IntOf(jsonResponse,'inventory_levels[i].inventory_item_id');
    location_id := CkJsonObject_IntOf(jsonResponse,'inventory_levels[i].location_id');
    available := CkJsonObject_IntOf(jsonResponse,'inventory_levels[i].available');
    updated_at := CkJsonObject__stringOf(jsonResponse,'inventory_levels[i].updated_at');
    admin_graphql_api_id := CkJsonObject__stringOf(jsonResponse,'inventory_levels[i].admin_graphql_api_id');
    i := i + 1;
  end;

CkHttp_Dispose(http);
CkJsonObject_Dispose(jsonResponse);

end;