Guida alla migrazione del flusso fuori banda (OOB)

  List requestedScopes = Arrays.asList(DriveScopes.DRIVE_APPDATA);
    AuthorizationRequest authorizationRequest = AuthorizationRequest.builder().setRequestedScopes(requestedScopes).build();
    Identity.getAuthorizationClient(activity)
            .authorize(authorizationRequest)
            .addOnSuccessListener(
                authorizationResult -> {
                  if (authorizationResult.hasResolution()) {
                    // Access needs to be granted by the user
                    PendingIntent pendingIntent = authorizationResult.getPendingIntent();
                    try {
    startIntentSenderForResult(pendingIntent.getIntentSender(),
    REQUEST_AUTHORIZE, null, 0, 0, 0, null);
                    } catch (IntentSender.SendIntentException e) {
                    Log.e(TAG, "Couldn't start Authorization UI: " + e.getLocalizedMessage());
                    }
                  } else {
                    // Access already granted, continue with user action
                    saveToDriveAppFolder(authorizationResult);
                  }
                })
            .addOnFailureListener(e -> Log.e(TAG, "Failed to authorize", e));

  List requestedScopes = Arrays.asList(DriveScopes.DRIVE_APPDATA);
    AuthorizationRequest authorizationRequest = AuthorizationRequest.builder()
    .requestOfflineAccess(webClientId)
            .setRequestedScopes(requestedScopes)
            .build();
    Identity.getAuthorizationClient(activity)
            .authorize(authorizationRequest)
            .addOnSuccessListener(
                authorizationResult -> {
                  if (authorizationResult.hasResolution()) {
                    // Access needs to be granted by the user
                    PendingIntent pendingIntent = authorizationResult.getPendingIntent();
                    try {
    startIntentSenderForResult(pendingIntent.getIntentSender(),
    REQUEST_AUTHORIZE, null, 0, 0, 0, null);
                    } catch (IntentSender.SendIntentException e) {
                    Log.e(TAG, "Couldn't start Authorization UI: " + e.getLocalizedMessage());
                    }
                  } else {
                    String authCode = authorizationResult.getServerAuthCode();
                  }
                })
            .addOnFailureListener(e -> Log.e(TAG, "Failed to authorize", e));

user.authentication.do { authentication, error in
  guard error == nil else { return }
  guard let authentication = authentication else { return }
  
  // Get the access token to attach it to a REST or gRPC request.
  let accessToken = authentication.accessToken
  
  // Or, get an object that conforms to GTMFetcherAuthorizationProtocol for
  // use with GTMAppAuth and the Google APIs client library.
  let authorizer = authentication.fetcherAuthorizer()
}

GIDSignIn.sharedInstance.signIn(with: signInConfig, presenting: self) { user, error in
  guard error == nil else { return }
  guard let user = user else { return }
  
  // request a one-time authorization code that your server exchanges for
  // an access token and refresh token
  let authCode = user.serverAuthCode
}

window.onload = function() {
  document.querySelector('button').addEventListener('click', function() {

  
  // retrieve access token
  chrome.identity.getAuthToken({interactive: true}, function(token) {
  
  // ..........


  // the example below shows how to use a retrieved access token with an appropriate scope
  // to call the Google People API contactGroups.get endpoint

  fetch(
    'https://people.googleapis.com/v1/contactGroups/all?maxMembers=20&key=API_KEY',
    init)
    .then((response) => response.json())
    .then(function(data) {
      console.log(data)
    });
   });
 });
};

async function main() {
  const server = http.createServer(async function (req, res) {

  if (req.url.startsWith('/oauth2callback')) {
    let q = url.parse(req.url, true).query;

    if (q.error) {
      console.log('Error:' + q.error);
    } else {
      
      // Get access and refresh tokens (if access_type is offline)
      let { tokens } = await oauth2Client.getToken(q.code);
      oauth2Client.setCredentials(tokens);

      // Example of using Google Drive API to list filenames in user's Drive.
      const drive = google.drive('v3');
      drive.files.list({
        auth: oauth2Client,
        pageSize: 10,
        fields: 'nextPageToken, files(id, name)',
      }, (err1, res1) => {
        // TODO(developer): Handle response / error.
      });
    }
  }
}

// initTokenClient() initializes a new token client with your
// web app's client ID and the scope you need access to

const client = google.accounts.oauth2.initTokenClient({
  client_id: 'YOUR_GOOGLE_CLIENT_ID',
  scope: 'https://www.googleapis.com/auth/calendar.readonly',
  
  // callback function to handle the token response
  callback: (tokenResponse) => {
    if (tokenResponse && tokenResponse.access_token) { 
      gapi.client.setApiKey('YOUR_API_KEY');
      gapi.client.load('calendar', 'v3', listUpcomingEvents);
    }
  },
});

function listUpcomingEvents() {
  gapi.client.calendar.events.list(...);
}