(Unicode C) 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:

Note: This example requires Chilkat v11.0.0 or greater.

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

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#include <C_CkHttpW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkHttpW http;
    HCkJsonObjectW jsonRequestBody;
    const wchar_t *url;
    HCkHttpResponseW resp;
    HCkJsonObjectW jsonResponse;
    int inventory_levelInventory_item_id;
    int inventory_levelLocation_id;
    int inventory_levelAvailable;
    const wchar_t *inventory_levelUpdated_at;
    const wchar_t *inventory_levelAdmin_graphql_api_id;

    success = FALSE;

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

    http = CkHttpW_Create();

    CkHttpW_putLogin(http,L"SHOPIFY_PRIVATE_API_KEY");
    CkHttpW_putPassword(http,L"SHOPIFY_PRIVATE_API_KEY");

    // Also see: How to retrieve inventory levels

    CkHttpW_putAccept(http,L"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

    jsonRequestBody = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateInt(jsonRequestBody,L"location_id",6884556842);
    CkJsonObjectW_UpdateInt(jsonRequestBody,L"inventory_item_id",12250274365496);
    CkJsonObjectW_UpdateInt(jsonRequestBody,L"available_adjustment",1);

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

    resp = CkHttpResponseW_Create();
    success = CkHttpW_HttpJson(http,L"POST",url,jsonRequestBody,L"application/json",resp);
    if (success == FALSE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(jsonRequestBody);
        CkHttpResponseW_Dispose(resp);
        return;
    }

    wprintf(L"Response Status Code: %d\n",CkHttpResponseW_getStatusCode(resp));

    jsonResponse = CkJsonObjectW_Create();
    CkJsonObjectW_Load(jsonResponse,CkHttpResponseW_bodyStr(resp));
    CkJsonObjectW_putEmitCompact(jsonResponse,FALSE);
    wprintf(L"%s\n",CkJsonObjectW_emit(jsonResponse));

    if (CkHttpResponseW_getStatusCode(resp) >= 300) {
        wprintf(L"Failed.\n");
        CkHttpW_Dispose(http);
        CkJsonObjectW_Dispose(jsonRequestBody);
        CkHttpResponseW_Dispose(resp);
        CkJsonObjectW_Dispose(jsonResponse);
        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

    // {
    //   "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"
    // ...
    //   }
    // }
    // 

    inventory_levelInventory_item_id = CkJsonObjectW_IntOf(jsonResponse,L"inventory_level.inventory_item_id");
    inventory_levelLocation_id = CkJsonObjectW_IntOf(jsonResponse,L"inventory_level.location_id");
    inventory_levelAvailable = CkJsonObjectW_IntOf(jsonResponse,L"inventory_level.available");
    inventory_levelUpdated_at = CkJsonObjectW_stringOf(jsonResponse,L"inventory_level.updated_at");
    inventory_levelAdmin_graphql_api_id = CkJsonObjectW_stringOf(jsonResponse,L"inventory_level.admin_graphql_api_id");


    CkHttpW_Dispose(http);
    CkJsonObjectW_Dispose(jsonRequestBody);
    CkHttpResponseW_Dispose(resp);
    CkJsonObjectW_Dispose(jsonResponse);

    }