(Swift 2) MYOB: Get OAuth 2.0 Access Token

Uses OAuth 2.0 to get a MYOB access token.

For more information, see https://developer.myob.com/api/accountright/api-overview/authentication/

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 oauth2 = CkoOAuth2()
    var success: Bool

    // This should be the port in the localhost callback URL for your app.  
    // The callback URL would look like "http://localhost:3017/" if the port number is 3017.
    oauth2.ListenPort = 3017

    oauth2.AuthorizationEndpoint = "https://secure.myob.com/oauth2/account/authorize"
    oauth2.TokenEndpoint = "https://secure.myob.com/oauth2/v1/authorize"

    // Replace these with actual values.
    oauth2.ClientId = "MYOB_CLIENT_ID"
    oauth2.ClientSecret = "MYOB_CLIENT_SECRET"

    oauth2.CodeChallenge = false

    oauth2.Scope = "CompanyFile"

    // Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
    var url: String? = oauth2.StartAuth()
    if oauth2.LastMethodSuccess != true {
        print("\(oauth2.LastErrorText)")
        return
    }

    // At this point, your application should load the URL in a browser.
    // For example, 
    // in C#: System.Diagnostics.Process.Start(url);
    // in Java: Desktop.getDesktop().browse(new URI(url));
    // in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
    //              wsh.Run url
    // in Xojo: ShowURL(url)  (see http://docs.xojo.com/index.php/ShowURL)
    // in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl        
    // The Microsoft account owner would interactively accept or deny the authorization request.

    // Add the code to load the url in a web browser here...
    // Add the code to load the url in a web browser here...
    // Add the code to load the url in a web browser here...

    // Now wait for the authorization.
    // We'll wait for a max of 60 seconds.
    var numMsWaited: Int = 0
    while (numMsWaited < 60000) && (oauth2.AuthFlowState.intValue < 3) {
        oauth2.SleepMs(100)
        numMsWaited = numMsWaited + 100
    }

    // If there was no response from the browser within 30 seconds, then 
    // the AuthFlowState will be equal to 1 or 2.
    // 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
    // 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
    // In that case, cancel the background task started in the call to StartAuth.
    if oauth2.AuthFlowState.intValue < 3 {
        oauth2.Cancel()
        print("No response from the browser!")
        return
    }

    // Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
    // The possible AuthFlowState values are:
    // 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
    // 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
    // 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
    if oauth2.AuthFlowState.intValue == 5 {
        print("OAuth2 failed to complete.")
        print("\(oauth2.FailureInfo)")
        return
    }

    if oauth2.AuthFlowState.intValue == 4 {
        print("OAuth2 authorization was denied.")
        print("\(oauth2.AccessTokenResponse)")
        return
    }

    if oauth2.AuthFlowState.intValue != 3 {
        print("Unexpected AuthFlowState:\(oauth2.AuthFlowState.intValue)")
        return
    }

    print("OAuth2 authorization granted!")
    print("Access Token = \(oauth2.AccessToken)")

    // Get the full JSON response:
    let json = CkoJsonObject()
    json.Load(oauth2.AccessTokenResponse)
    json.EmitCompact = false
    print("\(json.Emit())")

    // The JSON response looks like this:

    // Save the JSON to a file for future requests.
    let fac = CkoFileAccess()
    fac.WriteEntireTextFile("qa_data/tokens/myob.json", fileData: json.Emit(), charset: "utf-8", includePreamble: false)

}