feat(social): added validation for social media registration

lib/features/auth/presentation/bloc/oauth_cubit/oauth_cubit.dart

@@ -1,4 +1,5 @@
 import 'dart:developer';
+import 'package:dio/dio.dart';
 import 'package:eatvio_app/core/token_storage.dart';
 import 'package:eatvio_app/features/auth/presentation/bloc/oauth_cubit/oauth_state.dart';
 import 'package:eatvio_app/features/auth/repositories/auth_repository.dart';
@@ -29,7 +30,7 @@ class OAuthCubit extends Cubit<OAuthState> {
     }
   }
 
-  Future<void> signUpViaSocialMedia({
+  Future<List<RegistrationValidationErrors>?> signUpViaSocialMedia({
     required String provider,
     required String accessToken,
     required String id,
@@ -63,8 +64,38 @@ class OAuthCubit extends Cubit<OAuthState> {
       );
       TokenStorage.saveTokenInStorage(token);
       emit(OAuthState.loaded(token: token));
-    } catch (e) {
+    } on DioException catch (e) {
       emit(OAuthState.error(errorMessage: e.toString()));
+      final errors = e.response?.data['errors'] as Map<String, dynamic>?;
+      final emailErrors = errors?['email'] as List<dynamic>?;
+      final phoneErrors = errors?['phone'] as List<dynamic>?;
+      final dateOfBirth = errors?['date_of_birth'] as List<dynamic>?;
+      final errorsList = <RegistrationValidationErrors>[];
+      if (emailErrors != null && emailErrors.isNotEmpty) {
+        if (emailErrors.contains('Некорректный формат email')) {
+          errorsList.add(RegistrationValidationErrors.incorrectEmailFormat);
+        }
+        if (emailErrors.contains('Такой Эл. почта уже существует.')) {
+          errorsList.add(RegistrationValidationErrors.emailExist);
+        }
+      }
+      if (phoneErrors != null && phoneErrors.isNotEmpty) {
+        if (phoneErrors.contains('Такой phone уже существует.')) {
+          errorsList.add(RegistrationValidationErrors.phoneExist);
+        }
+      }
+      if (dateOfBirth != null && dateOfBirth.isNotEmpty) {
+        if (dateOfBirth.contains('Некорректный формат даты рождения')) {
+          errorsList.add(RegistrationValidationErrors.incorrectDateOfBirthFormat);
+        }
+      }
+      if (errorsList.isNotEmpty) {
+        return errorsList;
+      }
     }
+
+    return null;
   }
 }
+
+enum RegistrationValidationErrors { incorrectEmailFormat, emailExist, phoneExist, incorrectDateOfBirthFormat }