(Unicode C++) Walmart - Get Inventory for an Item

Note: This example uses classes, properties, or methods discontinued in Chilkat v11.0.0 or greater.

Demonstrates how to get inventory for an item and parse the result.

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#include <CkStringBuilderW.h>
#include <CkAuthUtilW.h>
#include <CkJsonObjectW.h>
#include <CkHttpW.h>
#include <CkXmlW.h>

void ChilkatSample(void)
    {
    // ---------------------------------------------------------------------------------------------------------
    // Note: This example is deprecated.  The Walmart API no longer uses the Signature method of authenticating.
    // Walmart now uses OAuth2.  
    // ---------------------------------------------------------------------------------------------------------

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

    // Sends the following GET request:
    // GET https://marketplace.walmartapis.com/v2/inventory?sku={SKU}

    CkStringBuilderW sbUrl;
    bool success = sbUrl.Append(L"https://marketplace.walmartapis.com/v2/inventory?sku={SKU}");
    int numReplaced = sbUrl.Replace(L"{SKU}",L"HOPP~904~51041");

    const wchar_t *requestMethod = L"GET";

    // First we need to generate a signature for our request.
    // The signature needs to be re-generated for each new Walmart HTTP request.
    CkAuthUtilW authUtil;

    const wchar_t *wmConsumerId = L"WALMART_CONSUMER_ID";
    const wchar_t *wmPrivateKey = L"WALMART_PRIVATE_KEY";
    const wchar_t *jsonStr = authUtil.walmartSignature(sbUrl.getAsString(),wmConsumerId,wmPrivateKey,requestMethod);
    if (authUtil.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",authUtil.lastErrorText());
        return;
    }

    // The JSON returned by WalmartSignature contains the values to be used in the following
    // header fields: WM_SEC.AUTH_SIGNATURE, WM_SEC.TIMESTAMP, and WM_QOS.CORRELATION_ID
    CkJsonObjectW json;
    json.Load(jsonStr);

    CkHttpW http;
    http.SetRequestHeader(L"WM_SVC.NAME",L"Walmart Marketplace");
    http.SetRequestHeader(L"WM_QOS.CORRELATION_ID",json.stringOf(L"correlation_id"));
    http.SetRequestHeader(L"WM_SEC.TIMESTAMP",json.stringOf(L"timestamp"));
    http.SetRequestHeader(L"WM_SEC.AUTH_SIGNATURE",json.stringOf(L"signature"));
    http.SetRequestHeader(L"WM_CONSUMER.ID",wmConsumerId);
    http.put_Accept(L"application/xml");

    // Note: Do not explicitly set the "Host" header.  Chilkat will set it automatically.

    const wchar_t *xmlStr = http.quickGetStr(sbUrl.getAsString());
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkXmlW xml;
    xml.LoadXml(xmlStr);

    // A successful response should have a 200 response status
    if (http.get_LastStatus() != 200) {
        wprintf(L"%s\n",xml.getXml());
        wprintf(L"Response Status Code: %d\n",http.get_LastStatus());
        wprintf(L"Failed.\n");
        return;
    }

    // A sample XML response is shown below..
    wprintf(L"%s\n",xml.getXml());
    wprintf(L"--\n");

    // To get the quantity:
    int quantity = xml.GetChildIntValue(L"quantity|amount");
    wprintf(L"quantity = %d\n",quantity);

    // ---------------------------------------
    // Sample XML response
    // ---------------------------------------

    // <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
    // <inventory xmlns="http://walmart.com/">
    //     <sku>HOPP~904~51041</sku>
    //     <quantity>
    //         <unit>EACH</unit>
    //         <amount>234</amount>
    //     </quantity>
    //     <fulfillmentLagTime>5</fulfillmentLagTime>
    // </inventory>
    }