(Swift) 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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func chilkatTest() {
    // ---------------------------------------------------------------------------------------------------------
    // 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}

    let sbUrl = CkoStringBuilder()!
    var success: Bool = sbUrl.append("https://marketplace.walmartapis.com/v2/inventory?sku={SKU}")
    var numReplaced: Int = sbUrl.replace("{SKU}", replacement: "HOPP~904~51041").intValue

    var requestMethod: String? = "GET"

    // First we need to generate a signature for our request.
    // The signature needs to be re-generated for each new Walmart HTTP request.
    let authUtil = CkoAuthUtil()!

    var wmConsumerId: String? = "WALMART_CONSUMER_ID"
    var wmPrivateKey: String? = "WALMART_PRIVATE_KEY"
    var jsonStr: String? = authUtil.walmartSignature(sbUrl.getAsString(), consumerId: wmConsumerId, privateKey: wmPrivateKey, requestMethod: requestMethod)
    if authUtil.lastMethodSuccess != true {
        print("\(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
    let json = CkoJsonObject()!
    json.load(jsonStr)

    let http = CkoHttp()!
    http.setRequestHeader("WM_SVC.NAME", value: "Walmart Marketplace")
    http.setRequestHeader("WM_QOS.CORRELATION_ID", value: json.string(of: "correlation_id"))
    http.setRequestHeader("WM_SEC.TIMESTAMP", value: json.string(of: "timestamp"))
    http.setRequestHeader("WM_SEC.AUTH_SIGNATURE", value: json.string(of: "signature"))
    http.setRequestHeader("WM_CONSUMER.ID", value: wmConsumerId)
    http.accept = "application/xml"

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

    var xmlStr: String? = http.quickGetStr(sbUrl.getAsString())
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    let xml = CkoXml()!
    xml.load(xmlStr)

    // A successful response should have a 200 response status
    if http.lastStatus.intValue != 200 {
        print("\(xml.getXml()!)")
        print("Response Status Code: \(http.lastStatus.intValue)")
        print("Failed.")
        return
    }

    // A sample XML response is shown below..
    print("\(xml.getXml()!)")
    print("--")

    // To get the quantity:
    var quantity: Int = xml.getChildIntValue("quantity|amount").intValue
    print("quantity = \(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>

}