(Swift 3,4,5...) Xero Upload Attachment

Demonstrates how to upload an attachment to Xero.

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let http = CkoHttp()!

    // Important: Make sure your OAuth2 access token was obtained with the scope "accounting.attachments"
    // included in the list of scopes.

    let jsonToken = CkoJsonObject()!
    var success: Bool = jsonToken.loadFile("qa_data/tokens/xero-access-token.json")
    if success == false {
        print("\(jsonToken.lastErrorText!)")
        return
    }

    http.authToken = jsonToken.string(of: "access_token")

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

    http.accept = "application/json"

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

    // Endpoint can be Invoices, Receipts, CreditNotes, PurchaseOrders, etc.
    http.setUrlVar("Endpoint", value: "Invoices")

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

    // Filename is the filename of the attachment you are uploading.
    http.setUrlVar("Filename", value: "penguins.jpg")

    // Load the file to be uploaded (from the local filesystem).
    let bd = CkoBinData()!
    success = bd.loadFile("qa_data/jpg/penguins.jpg")
    if success == false {
        print("Failed to load attachment file.")
        return
    }

    // Indicate the content-type according to the file content type.
    // Common content-types are:   image/jpg, image/png, application/pdf, application/zip, application/msword
    // If you don't know, use application/octet-stream
    var resp: CkoHttpResponse? = http.pBinaryBd("POST", url: url, data: bd, contentType: "image/jpg", md5: false, gzip: false)
    if http.lastMethodSuccess != true {
        print("\(http.lastErrorText!)")
        return
    }

    print("Response Status Code: \(resp!.statusCode.intValue)")

    let jsonResponse = CkoJsonObject()!
    jsonResponse.load(resp!.bodyStr)
    jsonResponse.emitCompact = false
    print("\(jsonResponse.emit()!)")

    if resp!.statusCode.intValue != 200 {
        print("Failed.")
        resp = nil
        return
    }

    resp = nil

    // A sample response:

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

    // {
    //   "Id": "35333c64-4449-457b-bf6a-1b64d538e3c7",
    //   "Status": "OK",
    //   "ProviderName": "Chilkat2222",
    //   "DateTimeUTC": "\/Date(1587212597758)\/",
    //   "Attachments": [
    //     {
    //       "AttachmentID": "daf106e2-8634-4349-bfcc-86c1df0793b2",
    //       "FileName": "penguins.jpg",
    //       "Url": "https://api.xero.com/api.xro/2.0/Invoices/0032f627-3156-4d30-9b1c-4d3b994dc921/Attachments/penguins.jpg",
    //       "MimeType": "image/jpg",
    //       "ContentLength": 777835
    //     }
    //   ]
    // }

}