How to authentication user for uploading video in youtube channel flutter? - flutter

Question

I want to authenticate user for uploading video in their channel ,required parameter is just authentication successful or not, currently i am working with these 3 plugins google_sign_in, googleapis extension_google_sign_in_as_googleapis_auth , by these i can only able to sign in into google account of user with the help of firebase.
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:google_sign_in/google_sign_in.dart';
import 'package:extension_google_sign_in_as_googleapis_auth/extension_google_sign_in_as_googleapis_auth.dart';
import 'package:googleapis/youtube/v3.dart';
GoogleSignIn _googleSignIn = GoogleSignIn(
scopes: <String>[
'email',
//'https://www.googleapis.com/auth/youtube.readonly',
],
);
void main() {
runApp(
MaterialApp(
title: 'Google Sign In',
home: SignInDemo(),
),
);
}
class SignInDemo extends StatefulWidget {
#override
State createState() => SignInDemoState();
}
class SignInDemoState extends State<SignInDemo> {
GoogleSignInAccount? _currentUser;
String? _contactText;
#override
void initState() {
super.initState();
_googleSignIn.onCurrentUserChanged.listen((GoogleSignInAccount? account) async {
setState(() {
_currentUser = account;
});
if (_currentUser != null) {
_handleGetChannels();
}
});
_googleSignIn.signInSilently();
}
Future<void> _handleGetChannels() async {
setState(() {
_contactText = 'Loading subscription info...';
});
var httpClient = (await _googleSignIn.authenticatedClient())!;
print("hello${httpClient.credentials.accessToken}");
var youTubeApi = YouTubeApi(httpClient);
var favorites = await youTubeApi.playlistItems.list(
['snippet'],
playlistId: 'LL', // Liked List
);
print("hey $favorites");
// final youtubeApi = YouTubeApi(await _googleSignIn.authenticatedClient());
// final response = await youtubeApi.subscriptions.list('snippet', mine: true);
setState(() {
if (favorites.items!.isNotEmpty) {
final channels =
favorites.items!.map((sub) => sub.snippet!.title).join(', ');
_contactText = 'I see you follow: ${channels}!';
} else {
_contactText = 'No channels to display.';
}
});
}
Future<void> _handleSignIn() async {
try {
await _googleSignIn.signIn();
} catch (error) {
print(error);
}
}
Future<void> _handleSignOut() => _googleSignIn.disconnect();
Widget _buildBody() {
if (_currentUser != null) {
return Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
ListTile(
leading: GoogleUserCircleAvatar(
identity: _currentUser!,
),
title: Text(_currentUser!.displayName ?? ''),
subtitle: Text(_currentUser!.email),
),
const Text('Signed in successfully.'),
Text(_contactText ?? ''),
RaisedButton(
child: const Text('SIGN OUT'),
onPressed: _handleSignOut,
),
RaisedButton(
child: const Text('REFRESH'),
onPressed: _handleGetChannels,
),
],
);
} else {
return Column(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
const Text('You are not currently signed in.'),
RaisedButton(
child: const Text('SIGN IN'),
onPressed: _handleSignIn,
),
],
);
}
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Google Sign In'),
),
body: ConstrainedBox(
constraints: const BoxConstraints.expand(),
child: _buildBody(),
));
}
}
if i pass 'https://www.googleapis.com/auth/youtube.readonly' in scopes it shows loading only, and from email scopes i got the error Unhandled Exception: Access was denied (www-authenticate header was: Bearer realm="https://accounts.google.com/", error="insufficient_scope"
kindly help , i just want to authenticate user for their you tube channel.

Answer 1

The YouTube Data API supports the OAuth 2.0 protocol for authorizing access to private user data.
insufficient_scope
Means that the access token you sent was not authorized with the scope needed by the method you are calling.
For example video.insert requires authorization with one of the following scopes
You should check Google apis dart client library