import 'package:twitch_api/twitch_api.dart';

final _twitchClient = TwitchClient(
  clientId: clientId,
  redirectUri: redirectUri,
);

const clientId = "<YOUR_CLIENT_ID>";
const redirectUri = "<YOUR_REDIRECT_URL>"; // ex: "https:///"

final _twitchClient = TwitchClient(
  clientId: clientId,
  redirectUri: redirectUri,
);

final _flutterWebviewPlugin = FlutterWebviewPlugin();

// First authentication through a webview
Future<TwitchToken> _openConnectionPage({
  List<TwitchApiScope> scopes = const [],
}) {
  // Listen for url changes to detect redirection on our redirectUri.
  _flutterWebviewPlugin.onUrlChanged.listen((url) {
    if (url.startsWith(_twitchClient.redirectUri)) {
      // After you got to your redirectUri you can initialize the token.
      _twitchClient.initializeToken(TwitchToken.fromUrl(url));

      // Close the webview
      _flutterWebviewPlugin.close();
    }
  });

  // When the webview is closed pop the current route.
  _flutterWebviewPlugin.onDestroy.listen((_) => Navigator.pop(context));

  // Get authorization URL for the connection with the webview.
  final _url = _twitchClient.authorizeUri(scopes);

  return Navigator.push(
    context,
    MaterialPageRoute(
      builder: (context) => WebViewPage(_url.toString()),
    ),
  ).then((_) => _twitchClient.twitchHttpClient.validateToken());
}