v2: Not able to find the OAuth Token in Client

[elivlo]

Hi :smiley:,

I just pulled the new version (v2). Because my application was running as a daemon I saved the access_token and refresh_token in case my program is failing. In v1 I got the token by calling client.Token().

But sadly this is no longer possible in v2.

So my question is how am I should do that now?

best regards

[elivlo]

Basically I miss these two functions from v1 in v2:

// NewClient creates a Client that will use the specified access token for its API requests.
func (a Authenticator) NewClient(token *oauth2.Token) Client {
    client := a.config.Client(a.context, token)
    return Client{
        http:    client,
        baseURL: baseAddress,
    }
}

// Token gets the client's current token.
func (c *Client) Token() (*oauth2.Token, error) {
    transport, ok := c.http.Transport.(*oauth2.Transport)
    if !ok {
        return nil, errors.New("spotify: oauth2 transport type not correct")
    }
    t, err := transport.Source.Token()
    if err != nil {
        return nil, err
    }

    return t, nil
}

[strideynet]

Hey!

You should be able to call spotify.New(auth.Client(context.Background(), tok)), where tok is the token ? Unless I'm misunderstanding your use-case.

[strideynet]

For what it's worth, it appears Spotify refresh tokens essentially live forever until the user takes some action to revoke your applications access. So for your case of persisting the token, I would save it after you've completed the flow, and then load it in whenever you need it in future.

auth := spotifyauth.New(
spotifyauth.WithRedirectURL("http://localhost:8080/v1/spotify/auth/callback"),
spotifyauth.WithScopes(
    spotifyauth.ScopeUserReadPrivate,
    spotifyauth.ScopeUserReadPlaybackState,
    spotifyauth.ScopeUserReadCurrentlyPlaying,
    spotifyauth.ScopeUserReadRecentlyPlayed,
    ),
)

// In your oauth2 callback handler
tok, err := auth.Token(ctx, state, request)
if err != nil {
  return err
}
saveToken(tok) // wherever you save your token, you need to persist the AccessToken, RefreshToken and Expiry and TokenType fields.

// when your application wants to use an existing token
tok := loadToken(userId) // pull the token from your DB/File

client := spotify.New(auth.Client(context.Background(), tok))

[strideynet]

If you have further questions, please feel free to reach out to me on the Gophers slack (https://invite.slack.golangbridge.org/). I'm @Noah Stride on there :)

[elivlo]

Thank you for the quick reply! Now I understand the workflow of v2, but I think your suggestion in #169 is a good idea.

[strideynet]

Thanks, I'll go ahead and close this but feel free to open/reopen if you have any other issues!