TF-571 Get token from authentication sso

lib/features/login/data/network/oidc_http_client.dart

@@ -2,15 +2,18 @@
 import 'dart:convert';
 
 import 'package:core/core.dart';
+import 'package:flutter_appauth/flutter_appauth.dart';
 import 'package:model/model.dart';
+import 'package:tmail_ui_user/features/login/data/extensions/authentication_token_extension.dart';
 import 'package:tmail_ui_user/features/login/data/network/endpoint.dart';
 import 'package:tmail_ui_user/features/login/data/extensions/service_path_extension.dart';
 
 class OIDCHttpClient {
 
   final DioClient _dioClient;
+  final FlutterAppAuth _appAuth;
 
-  OIDCHttpClient(this._dioClient);
+  OIDCHttpClient(this._dioClient, this._appAuth);
 
   Future<OIDCResponse?> checkOIDCIsAvailable(OIDCRequest oidcRequest) async {
     final result = await _dioClient.get(
@@ -33,4 +36,22 @@ class OIDCHttpClient {
   Future<OIDCConfiguration> getOIDCConfiguration(Uri baseUri) async {
     return OIDCConfiguration.initial();
   }
+
+  Future<TokenOIDC> getTokenOIDC(String clientId, String redirectUrl, String discoveryUrl, List<String> scopes) async {
+    final tokenResponse = await _appAuth.authorizeAndExchangeCode(AuthorizationTokenRequest(
+        clientId,
+        redirectUrl,
+        discoveryUrl: discoveryUrl,
+        scopes: scopes,
+        preferEphemeralSession: true));
+
+    log('OIDCHttpClient::getTokenOIDC(): token: ${tokenResponse?.accessToken}');
+
+    if (tokenResponse != null) {
+      final tokenOIDC = tokenResponse.toTokenOIDC();
+      return tokenOIDC.isTokenValid() ? tokenOIDC : TokenOIDC.empty();
+    } else {
+      return TokenOIDC.empty();
+    }
+  }
 }