TF-2387 Handle sign in SAAS platform

lib/features/login/data/network/config/oidc_constant.dart

@@ -8,4 +8,8 @@ class OIDCConstant {
   static const authResponseKey = "auth_info";
 
   static String get clientId => PlatformInfo.isWeb ? AppConfig.webOidcClientId : mobileOidcClientId;
+
+  static String get saasClientId => PlatformInfo.isMobile
+    ? mobileOidcClientId
+    : '';
 }

lib/features/login/domain/exceptions/authentication_exception.dart

@@ -44,4 +44,8 @@ class CanNotFoundPassword implements Exception {}
 
 class CanNotAuthenticationInfoOnWeb implements Exception {}
 
-class NotFoundAuthenticationInfoCache implements Exception {}
+class NotFoundAuthenticationInfoCache implements Exception {}
+
+class CanNotFoundSaasServerUrl implements Exception {}
+
+class SaasServerUriIsNull implements Exception {}

lib/features/login/presentation/login_view.dart

@@ -9,6 +9,7 @@ import 'package:tmail_ui_user/features/base/widget/recent_item_tile_widget.dart'
 import 'package:tmail_ui_user/features/login/domain/model/recent_login_url.dart';
 import 'package:tmail_ui_user/features/login/presentation/base_login_view.dart';
 import 'package:tmail_ui_user/features/login/presentation/login_form_type.dart';
+import 'package:tmail_ui_user/features/login/presentation/privacy_link_widget.dart';
 import 'package:tmail_ui_user/features/login/presentation/widgets/dns_lookup_input_form.dart';
 import 'package:tmail_ui_user/features/login/presentation/widgets/horizontal_progress_loading_button.dart';
 import 'package:tmail_ui_user/features/login/presentation/widgets/login_back_button.dart';

lib/features/starting_page/data/datasource/saas_authentication_datasource.dart

@@ -0,0 +1,7 @@
+
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+
+abstract class SaasAuthenticationDataSource {
+  Future<TokenOIDC> signIn(OIDCConfiguration oidcConfiguration);
+}

lib/features/starting_page/data/datasource_impl/saas_authentication_datasource_impl.dart

@@ -0,0 +1,29 @@
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+import 'package:tmail_ui_user/features/login/data/network/authentication_client/authentication_client_base.dart';
+import 'package:tmail_ui_user/features/login/domain/extensions/oidc_configuration_extensions.dart';
+import 'package:tmail_ui_user/features/starting_page/data/datasource/saas_authentication_datasource.dart';
+import 'package:tmail_ui_user/main/exceptions/exception_thrower.dart';
+
+class SaasAuthenticationDataSourceImpl extends SaasAuthenticationDataSource {
+
+  final AuthenticationClientBase _authenticationClient;
+  final ExceptionThrower _exceptionThrower;
+
+  SaasAuthenticationDataSourceImpl(
+    this._authenticationClient,
+    this._exceptionThrower,
+  );
+
+  @override
+  Future<TokenOIDC> signIn(OIDCConfiguration oidcConfiguration) {
+    return Future.sync(() async {
+      return await _authenticationClient.getTokenOIDC(
+        oidcConfiguration.clientId,
+        oidcConfiguration.redirectUrl,
+        oidcConfiguration.discoveryUrl,
+        oidcConfiguration.scopes,
+      );
+    }).catchError(_exceptionThrower.throwException);
+  }
+}

lib/features/starting_page/data/repository/saas_authentication_repository_impl.dart

@@ -0,0 +1,16 @@
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+import 'package:tmail_ui_user/features/starting_page/data/datasource/saas_authentication_datasource.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/repository/saas_authentication_repository.dart';
+
+class SaasAuthenticationRepositoryImpl extends SaasAuthenticationRepository {
+
+  final SaasAuthenticationDataSource _saasAuthenticationDataSource;
+
+  SaasAuthenticationRepositoryImpl(this._saasAuthenticationDataSource);
+
+  @override
+  Future<TokenOIDC> signIn(OIDCConfiguration oidcConfiguration) {
+    return _saasAuthenticationDataSource.signIn(oidcConfiguration);
+  }
+}

lib/features/starting_page/domain/repository/saas_authentication_repository.dart

@@ -0,0 +1,6 @@
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+
+abstract class SaasAuthenticationRepository {
+  Future<TokenOIDC> signIn(OIDCConfiguration oidcConfiguration);
+}

lib/features/starting_page/domain/state/sign_in_saas_state.dart

@@ -0,0 +1,21 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+
+class SignInSaasLoading extends LoadingState {}
+
+class SignInSaasSuccess extends Success {
+  final TokenOIDC tokenOIDC;
+  final Uri baseUri;
+  final OIDCConfiguration oidcConfiguration;
+
+  SignInSaasSuccess(this.tokenOIDC, this.baseUri, this.oidcConfiguration);
+
+  @override
+  List<Object> get props => [tokenOIDC, baseUri, oidcConfiguration];
+}
+
+class SignInSaasFailure extends FeatureFailure {
+  SignInSaasFailure(dynamic exception) : super(exception: exception);
+}

lib/features/starting_page/domain/usecase/sign_in_saas_interactor.dart

@@ -0,0 +1,66 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:dartz/dartz.dart';
+import 'package:flutter/services.dart';
+import 'package:model/account/authentication_type.dart';
+import 'package:model/account/personal_account.dart';
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:model/oidc/token_oidc.dart';
+import 'package:rich_text_composer/views/commons/logger.dart';
+import 'package:tmail_ui_user/features/login/domain/exceptions/login_exception.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/account_repository.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/authentication_oidc_repository.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/credential_repository.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/repository/saas_authentication_repository.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/state/sign_in_saas_state.dart';
+
+class SignInSaasInteractor {
+  final SaasAuthenticationRepository _saasRepository;
+  final AuthenticationOIDCRepository _authenticationOIDCRepository;
+  final AccountRepository _accountRepository;
+  final CredentialRepository _credentialRepository;
+
+  SignInSaasInteractor(
+    this._saasRepository,
+    this._authenticationOIDCRepository,
+    this._accountRepository,
+    this._credentialRepository
+  );
+
+  Stream<Either<Failure, Success>> execute({
+    required Uri baseUri,
+    required OIDCConfiguration oidcConfiguration
+  }) async* {
+    try {
+      yield Right<Failure, Success>(SignInSaasLoading());
+
+      final tokenOIDC = await _saasRepository.signIn(oidcConfiguration);
+
+      await Future.wait([
+        _credentialRepository.saveBaseUrl(baseUri),
+        _authenticationOIDCRepository.persistTokenOIDC(tokenOIDC),
+        _authenticationOIDCRepository.persistAuthorityOidc(oidcConfiguration.authority),
+      ]);
+
+      await _accountRepository.setCurrentAccount(
+        PersonalAccount(
+          tokenOIDC.tokenIdHash,
+          AuthenticationType.oidc,
+          isSelected: true
+        )
+      );
+
+      yield Right<Failure, Success>(SignInSaasSuccess(tokenOIDC, baseUri, oidcConfiguration));
+    } on PlatformException catch (e) {
+      logError('SignInSaasInteractor::execute():PlatformException ${e.message} - ${e.stacktrace}');
+      if (NoSuitableBrowserForOIDCException.verifyException(e)) {
+        yield Left<Failure, Success>(SignInSaasFailure(NoSuitableBrowserForOIDCException()));
+      } else {
+        yield Left<Failure, Success>(SignInSaasFailure(e));
+      }
+    } catch (e) {
+      logError('SignInSaasInteractor::execute():Exception = $e');
+      yield Left<Failure, Success>(SignInSaasFailure(e));
+    }
+  }
+}

lib/features/starting_page/presentation/twake_welcome/twake_welcome_bindings.dart

@@ -1,9 +1,60 @@
 import 'package:get/get.dart';
+import 'package:tmail_ui_user/features/base/base_bindings.dart';
+import 'package:tmail_ui_user/features/login/data/network/authentication_client/authentication_client_base.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/account_repository.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/authentication_oidc_repository.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/credential_repository.dart';
+import 'package:tmail_ui_user/features/starting_page/data/datasource/saas_authentication_datasource.dart';
+import 'package:tmail_ui_user/features/starting_page/data/datasource_impl/saas_authentication_datasource_impl.dart';
+import 'package:tmail_ui_user/features/starting_page/data/repository/saas_authentication_repository_impl.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/repository/saas_authentication_repository.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/usecase/sign_in_saas_interactor.dart';
 import 'package:tmail_ui_user/features/starting_page/presentation/twake_welcome/twake_welcome_controller.dart';
+import 'package:tmail_ui_user/main/exceptions/remote_exception_thrower.dart';
+
+class TwakeWelcomeBindings extends BaseBindings {
 
-class TwakeWelcomeBindings extends Bindings {
   @override
-  void dependencies() {
-    Get.lazyPut(() => TwakeWelcomeController());
+  void bindingsController() {
+    Get.lazyPut(() => TwakeWelcomeController(
+      Get.find<SignInSaasInteractor>(),
+    ));
+  }
+
+  @override
+  void bindingsInteractor() {
+    Get.lazyPut(() => SignInSaasInteractor(
+      Get.find<SaasAuthenticationRepository>(),
+      Get.find<AuthenticationOIDCRepository>(),
+      Get.find<AccountRepository>(),
+      Get.find<CredentialRepository>(),
+    ));
+  }
+
+  @override
+  void bindingsDataSourceImpl() {
+    Get.lazyPut(() => SaasAuthenticationDataSourceImpl(
+      Get.find<AuthenticationClientBase>(),
+      Get.find<RemoteExceptionThrower>(),
+    ));
+  }
+
+  @override
+  void bindingsDataSource() {
+    Get.lazyPut<SaasAuthenticationDataSource>(
+      () => Get.find<SaasAuthenticationDataSourceImpl>());
+  }
+
+  @override
+  void bindingsRepository() {
+    Get.lazyPut<SaasAuthenticationRepository>(
+      () => Get.find<SaasAuthenticationRepositoryImpl>());
+  }
+
+  @override
+  void bindingsRepositoryImpl() {
+    Get.lazyPut(() => SaasAuthenticationRepositoryImpl(
+      Get.find<SaasAuthenticationDataSource>(),
+    ));
   }
 }

lib/features/starting_page/presentation/twake_welcome/twake_welcome_controller.dart

@@ -1,12 +1,25 @@
-import 'package:tmail_ui_user/features/base/base_controller.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:dartz/dartz.dart';
+import 'package:jmap_dart_client/jmap/core/session/session.dart';
+import 'package:model/oidc/oidc_configuration.dart';
+import 'package:tmail_ui_user/features/base/reloadable/reloadable_controller.dart';
+import 'package:tmail_ui_user/features/login/data/network/config/oidc_constant.dart';
+import 'package:tmail_ui_user/features/login/domain/exceptions/authentication_exception.dart';
 import 'package:tmail_ui_user/features/login/presentation/login_form_type.dart';
 import 'package:tmail_ui_user/features/login/presentation/model/login_arguments.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/state/sign_in_saas_state.dart';
+import 'package:tmail_ui_user/features/starting_page/domain/usecase/sign_in_saas_interactor.dart';
 import 'package:tmail_ui_user/main/routes/app_routes.dart';
 import 'package:tmail_ui_user/main/routes/route_navigation.dart';
+import 'package:tmail_ui_user/main/routes/route_utils.dart';
 import 'package:tmail_ui_user/main/utils/app_config.dart';
 import 'package:tmail_ui_user/main/utils/app_utils.dart';
 
-class TwakeWelcomeController extends BaseController {
+class TwakeWelcomeController extends ReloadableController {
+
+  final SignInSaasInteractor _signInSaasInteractor;
+
+  TwakeWelcomeController(this._signInSaasInteractor);
 
   void handleUseCompanyServer() {
     popAndPush(
@@ -17,4 +30,55 @@ class TwakeWelcomeController extends BaseController {
   void onClickPrivacyPolicy() {
     AppUtils.launchLink(AppConfig.linagoraPrivacyUrl);
   }
+
+  void onClickSignIn() {
+    if (AppConfig.saasServerUrl.isEmpty) {
+      consumeState(Stream.value(Left(SignInSaasFailure(CanNotFoundSaasServerUrl()))));
+      return;
+    }
+
+    final baseUri = Uri.tryParse(AppConfig.saasServerUrl);
+
+    if (baseUri == null) {
+      consumeState(Stream.value(Left(SignInSaasFailure(SaasServerUriIsNull()))));
+      return;
+    }
+
+    consumeState(_signInSaasInteractor.execute(
+      baseUri: baseUri,
+      oidcConfiguration: OIDCConfiguration(
+        authority: AppConfig.registrationUrl,
+        clientId: OIDCConstant.saasClientId,
+        scopes: AppConfig.oidcScopes
+      )
+    ));
+  }
+
+  @override
+  void handleSuccessViewState(Success success) {
+    if (success is SignInSaasSuccess) {
+      _handleSignInSaasSuccess(success);
+    } else {
+      super.handleSuccessViewState(success);
+    }
+  }
+
+  @override
+  void handleReloaded(Session session) {
+    popAndPush(
+      RouteUtils.generateNavigationRoute(AppRoutes.dashboard),
+      arguments: session);
+  }
+
+  void _handleSignInSaasSuccess(SignInSaasSuccess success) {
+    dynamicUrlInterceptors.setJmapUrl(success.baseUri.toString());
+    dynamicUrlInterceptors.changeBaseUrl(success.baseUri.toString());
+    authorizationInterceptors.setTokenAndAuthorityOidc(
+      newToken: success.tokenOIDC,
+      newConfig: success.oidcConfiguration);
+    authorizationIsolateInterceptors.setTokenAndAuthorityOidc(
+      newToken: success.tokenOIDC,
+      newConfig: success.oidcConfiguration);
+    getSessionAction();
+  }
 }

lib/features/starting_page/presentation/twake_welcome/twake_welcome_view.dart

@@ -6,6 +6,7 @@ import 'package:linagora_design_flutter/linagora_design_flutter.dart';
 import 'package:tmail_ui_user/features/starting_page/presentation/twake_welcome/twake_welcome_controller.dart';
 import 'package:tmail_ui_user/features/starting_page/presentation/twake_welcome/twake_welcome_view_style.dart';
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+import 'package:tmail_ui_user/main/utils/app_config.dart';
 
 class TwakeWelcomeView extends GetWidget<TwakeWelcomeController> {
 
@@ -31,8 +32,13 @@ class TwakeWelcomeView extends GetWidget<TwakeWelcomeController> {
       hoverColor: Colors.transparent,
       highlightColor: Colors.transparent,
       overlayColor: WidgetStateProperty.all(Colors.transparent),
-      signInTitle: AppLocalizations.of(context).signIn.capitalizeFirst ?? '',
-      createTwakeIdTitle: AppLocalizations.of(context).createTwakeId,
+      signInTitle: AppConfig.isSaasPlatForm
+        ? AppLocalizations.of(context).signIn.capitalizeFirst ?? ''
+        : null,
+      onSignInOnTap: controller.onClickSignIn,
+      createTwakeIdTitle: AppConfig.isSaasPlatForm
+        ? AppLocalizations.of(context).createTwakeId
+        : null,
       useCompanyServerTitle: AppLocalizations.of(context).useCompanyServer,
       description: AppLocalizations.of(context).descriptionWelcomeTo,
       privacyPolicy: AppLocalizations.of(context).privacyPolicy,

lib/main/utils/app_config.dart

@@ -66,4 +66,8 @@ class AppConfig {
   static String get _platformEnv => dotenv.get('PLATFORM', fallback: 'other');
 
   static bool get isSaasPlatForm => _platformEnv.toLowerCase() == saasPlatform;
+
+  static String get registrationUrl => dotenv.get('REGISTRATION_URL', fallback: '');
+
+  static String get saasServerUrl => dotenv.get('SAAS_SERVER_URL', fallback: '');
 }

model/lib/oidc/oidc_configuration.dart

@@ -25,8 +25,6 @@ class OIDCConfiguration with EquatableMixin {
     }
   }
 
-  String get clientIdHash => clientId.hashCode.toString();
-
   @override
   List<Object?> get props => [
     authority,