Some Questions.

[ghost]

I'm using the NuGet package in my project. My project is to show what song is currently playing on Spotify as well as controlling it.

1: I'm trying to update the current track every second with requests to the Spotify API for the currently playing song. This uses a lot of API requests, but if I request for the current song at all, I get an error that my token is invalid. I've made users enter the token and set the spotifyclient when the program starts, so that can't be the case.

2: This still does relate to the current song question in 1, but I'm wondering how you can convert a CurrentSong to a FullTrack? I'm not exactly sure if I'm using the right package, but it seems as I can't use an explicit cast or a conversion of any kind. Maybe would using the "context.Href" of a currentsong work?

Thank you for your help.

[JohnnyCrazy]

Hi,

1. That also depends on what scopes you requested, what authorization flow you're using and what the detailed error response looks like.
2. Use the id property and then FullTrack track = await spotify.Tracks.Get(id)

[ghost]

Thanks for the response.

My current scopes are user-read-currently-playing user-read-playback-position user-read-playback-state streaming app-remote-control user-modify-playback-state. For my authorization flow, I'm using a code. The program launches a link when a button is clicked, and the user gets redirected to my page where they have to copy and paste a code into the program.

It looks like the currently playing item, in my case a variable called "cpr", does not have a property called "id".

System.Reflection.TargetInvocationException
HResult=0x80131604
Message=Exception has been thrown by the target of an invocation.
Source=mscorlib
StackTrace:
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at spotihud.Program.Main() in C:\Users\hstev\source\repos\spotihud\spotihud\Program.cs:line 19

This exception was originally thrown at this call stack:
[External Code]
spotihud.Form1.SetupPage() in Form1.cs
[External Code]

Inner Exception 1:
APIUnauthorizedException: Invalid access token

My access token is correct as the user has to authorize with it every time the program starts.

[JohnnyCrazy]

Is the code an access_token or the code received from the auth response? This image may help:

[ghost]

I believe it's a code from the auth response.

[JohnnyCrazy]

Well you should then exchange it for an access_token. The code can not be used as authorization.

https://johnnycrazy.github.io/SpotifyAPI-NET/docs/next/authorization_code

[ghost]

Oh, sorry for misunderstanding. I thought an access token in a request was a code. Thanks.