Authenticate Users - Swift SDK

let anonymousCredentials = Credentials.anonymous
app.login(credentials: anonymousCredentials) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

let email = "skroob@example.com"
let password = "12345"
app.login(credentials: Credentials.emailPassword(email: email, password: password)) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

let credentials = Credentials.userAPIKey("<api-key>")
app.login(credentials: credentials) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

let params: Document = ["username": "bob"]
app.login(credentials: Credentials.function(payload: params)) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

let credentials = Credentials.jwt(token: "<jwt>")
app.login(credentials: credentials) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

// This example demonstrates login logic for FBSDK version 13.x. If you're using
// a different version of FBSDK, you'll need to adapt this example for your version.
let loginManager = LoginManager()
loginManager.logIn(permissions: [ .email ]) { loginResult in
    switch loginResult {
    case .success(let grantedPermissions, let declinedPermissions, let accessToken):
        let credentials = Credentials.facebook(accessToken: accessToken!.tokenString)
        app.login(credentials: credentials) { result in
            DispatchQueue.main.async {
                switch result {
                case .failure(let error):
                    print("Failed to log in to MongoDB Realm: \(error)")
                case .success(let user):
                    print("Successfully logged in to MongoDB Realm using Facebook OAuth.")
                    // Now logged in, do something with user
                    // Remember to dispatch to main if you are doing anything on the UI thread
                }
            }
        }
    case .failed(let error):
        print("Facebook login failed: \(error)")
    case .cancelled:
        print("The user cancelled the login flow.")
    }
}

// Fetch IDToken via the Apple SDK
let credentials = Credentials.apple(idToken: "<token>")
app.login(credentials: credentials) { (result) in
    switch result {
    case .failure(let error):
        print("Login failed: \(error.localizedDescription)")
    case .success(let user):
        print("Successfully logged in as user \(user)")
        // Now logged in, do something with user
        // Remember to dispatch to main if you are doing anything on the UI thread
    }
}

func login() async {
    do {
        let app = App(id: YOUR_REALM_APP_ID)
        // Authenticate with the instance of the app that points
        // to your backend. Here, we're using anonymous login.
        let user = try await app.login(credentials: Credentials.anonymous)
        print("Successfully logged in user: \(user)")
    } catch {
        print("Failed to log in user: \(error.localizedDescription)")
    }
}