(Go) Xero List Attachments for an Item (such as an Invoice)

Demonstrates how to get information about the attachments for a particular Xero item.

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

For more information, see https://developer.xero.com/documentation/api/attachments#GET

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    success := false

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

    http := Http_Ref.html">chilkat.NewHttp()

    jsonToken := JsonObject_Ref.html">chilkat.NewJsonObject()
    success = jsonToken.LoadFile("qa_data/tokens/xero-access-token.json")
    if success == false {
        fmt.Println(jsonToken.LastErrorText())
        http.DisposeHttp()
        jsonToken.DisposeJsonObject()
        return
    }

    http.SetAuthToken(jsonToken.StringOf("access_token"))

    // Replace the value here with an actual tenant ID obtained from this example:
    // Get Xero Tenant IDs
    http.SetRequestHeader("Xero-tenant-id","83299b9e-5747-4a14-a18a-a6c94f824eb7")

    http.SetAccept("application/json")

    url := "https://api.xero.com/api.xro/2.0/{$Endpoint}/{$Guid}/Attachments/"

    // Endpoint can be Invoices, Receipts, CreditNotes, PurchaseOrders, etc.
    http.SetUrlVar("Endpoint","Invoices")

    // Guid is the ID of the item, such as the InvoiceID.
    http.SetUrlVar("Guid","0032f627-3156-4d30-9b1c-4d3b994dc921")

    resp := HttpResponse_Ref.html">chilkat.NewHttpResponse()
    success = http.HttpNoBody("GET",url,resp)
    if success == false {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        jsonToken.DisposeJsonObject()
        resp.DisposeHttpResponse()
        return
    }

    fmt.Println("Response Status Code: ", resp.StatusCode())

    jsonResponse := JsonObject_Ref.html">chilkat.NewJsonObject()
    jsonResponse.Load(resp.BodyStr())
    jsonResponse.SetEmitCompact(false)
    fmt.Println(*jsonResponse.Emit())

    if resp.StatusCode() != 200 {
        fmt.Println("Failed.")
        http.DisposeHttp()
        jsonToken.DisposeJsonObject()
        resp.DisposeHttpResponse()
        jsonResponse.DisposeJsonObject()
        return
    }

    // Sample response:
    // 
    // Use the this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    // {
    //   "Id": "24bfbcb9-dec9-4d33-835c-8f165d776766",
    //   "Status": "OK",
    //   "ProviderName": "Chilkat2222",
    //   "DateTimeUTC": "\/Date(1587213296972)\/",
    //   "Attachments": [
    //     {
    //       "AttachmentID": "daf106e2-8634-4349-bfcc-86c1df0793b2",
    //       "FileName": "penguins.jpg",
    //       "Url_Ref.html">Url": "https://api.xero.com/api.xro/2.0/Invoices/0032f627-3156-4d30-9b1c-4d3b994dc921/Attachments/penguins.jpg",
    //       "MimeType": "image/jpg",
    //       "ContentLength": 777835
    //     }
    //   ]
    // }

    var AttachmentID *string = new(string)
    var FileName *string = new(string)
    var v_Url_Ref.html">Url *string = new(string)
    var MimeType *string = new(string)
    var ContentLength int

    Id := jsonResponse.StringOf("Id")
    Status := jsonResponse.StringOf("Status")
    ProviderName := jsonResponse.StringOf("ProviderName")
    DateTimeUTC := jsonResponse.StringOf("DateTimeUTC")
    i := 0
    count_i := jsonResponse.SizeOfArray("Attachments")
    for i < count_i {
        jsonResponse.SetI(i)
        AttachmentID = jsonResponse.StringOf("Attachments[i].AttachmentID")
        FileName = jsonResponse.StringOf("Attachments[i].FileName")
        v_Url_Ref.html">Url = jsonResponse.StringOf("Attachments[i].Url_Ref.html">Url")
        MimeType = jsonResponse.StringOf("Attachments[i].MimeType")
        ContentLength = jsonResponse.IntOf("Attachments[i].ContentLength")
        i = i + 1
    }


    http.DisposeHttp()
    jsonToken.DisposeJsonObject()
    resp.DisposeHttpResponse()
    jsonResponse.DisposeJsonObject()