How to retrieve the token

[camillegallet]

Hello there, I want to get a token from an OAuth. For testing purpose I'm trying to do that with Spotify before working with my own company OAuth

But I don't understand well how to to the request to retrieve the token with the OAUth2 swift framework API

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view, typically from a nib.
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    appDelegate.oauth2 = OAuth2CodeGrant(settings: [
        "client_id": "1448b6616f2947919657805f8e8e46c2",
        "client_secret": "6bc86e063ab9416b86d8e17a4b3d2727",
        "authorize_uri": "https://accounts.spotify.com/en/authorize",
        "token_uri": "https://accounts.spotify.com/api/token",   // code grant only
        "redirect_uris": ["kronos://oauth/callback"],   // register your own "myapp" scheme in Info.plist
        "scope": "user-library-modify",
        "keychain": true        
    ])

    appDelegate.oauth2?.authConfig.authorizeContext = appDelegate
    appDelegate.oauth2?.logger = OAuth2DebugLogger(.trace)

    //open the login webpage for entering the credentials and get the token

    print(appDelegate.oauth2?.accessToken)
}

Thanks in advance for your help

[camillegallet]

I've also try with that class : https://github.com/p2/OAuth2/wiki/Alamofire-4

and created

    let oauth2 = OAuth2CodeGrant(settings: [
        "client_id": "1448b6616f2947919657805f8e8e46c2",
        "client_secret": "6bc86e063ab9416b86d8e17a4b3d2727",
        "authorize_uri": "https://accounts.spotify.com/en/authorize",
        "token_uri": "https://accounts.spotify.com/api/token",   // code grant only
        "redirect_uris": ["kronos://oauth/callback"],   // register your own "myapp" scheme in Info.plist
        "scope": "user-library-modify",
        "secret_in_body": true,    // Github needs this
        "keychain": false,         // if you DON'T want keychain integration
    ] as OAuth2JSON)
    //clientID: String, baseURLString: String, accessToken: String, refreshToken: String

    let sessionManager = SessionManager()
    let retrier = OAuth2RetryHandler(oauth2:  oauth2)
    sessionManager.adapter = retrier
    sessionManager.retrier = retrier
    self.alamofireManager = sessionManager   // you must hold on to this somewhere
    // Note that the `validate()` call here is important
    sessionManager.request("https://api.spotify.com/v1/tracks/2KrxsD86ARO5beq7Q0Drfqa").validate().responseJSON { response in
        debugPrint(response)
    }

I've got "INVALID_CLIENT: Invalid redirect URI" I've added that in the project info

[camillegallet]

The error was due to a missing config on the spotify's developper site But now, lets go back to my main issue: how to deal with OAuth without having the need to retrieve a JSON and directly get the token

[camillegallet]

Finaly I've found an answer to the problem now I do :

do{
        let url = try appDelegate.oauth2!.authorizeURL(params:nil)
        try appDelegate.oauth2!.authorizer.openAuthorizeURLInBrowser(url)
        appDelegate.oauth2!.afterAuthorizeOrFail = { authParameters, error in
            print("afterAuthorizeOrFail")
        }
    }catch let error {
        DispatchQueue.main.async {
            print("ERROR \(error)")
        }
    }

[camillegallet]

In addition I've that in the AppDelegate class

 func application(_ app: UIApplication,
              open url: URL,
              options: [UIApplication.OpenURLOptionsKey: Any] = [:]) -> Bool {
    oauth2!.handleRedirectURL(url)
    print(url)
    return true
}

The function is called but not afterAuthorizeOrFail

Does someone know how to get the token?

[camillegallet]

I've found how to finally solve my problem:

 do{
    let url = try appDelegate.oauth2!.authorizeURL(params:nil)
    appDelegate.oauth2!.afterAuthorizeOrFail = { authParameters, error in
        print("afterAuthorizeOrFail")
    }
    try appDelegate.oauth2!.authorizer.openAuthorizeURLInBrowser(url)
}catch let error {
    DispatchQueue.main.async {
        print("ERROR \(error)")
    }
}

Note that you need to swap afterAuthorizeOrFail and openAuthorizeURLInBrowser please fix the doc