fix for resend, cooldown and a few small fixes

frontend/pshared/lib/models/auth/probe_result.dart

@@ -0,0 +1,5 @@
+enum AuthProbeResult {
+  authorized,
+  notVerified,
+  error,
+}

frontend/pshared/lib/provider/account.dart

@@ -7,10 +7,12 @@ import 'package:share_plus/share_plus.dart';
 import 'package:pshared/api/errors/unauthorized.dart';
 import 'package:pshared/api/requests/signup.dart';
 import 'package:pshared/api/requests/login_data.dart';
+import 'package:pshared/api/responses/error/server.dart';
 import 'package:pshared/api/responses/verification/response.dart';
 import 'package:pshared/config/constants.dart';
 import 'package:pshared/models/account/account.dart';
 import 'package:pshared/models/auth/login_outcome.dart';
+import 'package:pshared/models/auth/probe_result.dart';
 import 'package:pshared/models/auth/pending_login.dart';
 import 'package:pshared/models/auth/state.dart';
 import 'package:pshared/models/describable.dart';
@@ -309,4 +311,31 @@ class AccountProvider extends ChangeNotifier {
     }
     await restore();
   }
+
+  Future<AuthProbeResult> probeAuthorization({
+    required String email,
+    required String password,
+    required String locale,
+  }) async {
+    try {
+      final outcome = await AccountService.login(LoginData.build(
+        login: email,
+        password: password,
+        locale: locale,
+      ));
+      if (outcome.isCompleted) {
+        await AuthorizationService.logout();
+        return AuthProbeResult.authorized;
+      }
+      if (outcome.isPending) {
+        return AuthProbeResult.authorized;
+      }
+      return AuthProbeResult.error;
+    } catch (e) {
+      if (e is ErrorResponse && e.error == 'account_not_verified') {
+        return AuthProbeResult.notVerified;
+      }
+      return AuthProbeResult.error;
+    }
+  }
 }

frontend/pshared/lib/provider/email_verification.dart

@@ -5,6 +5,7 @@ import 'package:pshared/provider/resource.dart';
 import 'package:pshared/service/account.dart';
 import 'package:pshared/utils/exception.dart';
 
+
 class EmailVerificationProvider extends ChangeNotifier {
   Resource<bool> _resource = Resource(data: null, isLoading: false);
   String? _token;
@@ -16,6 +17,14 @@ class EmailVerificationProvider extends ChangeNotifier {
   ErrorResponse? get errorResponse =>
       _resource.error is ErrorResponse ? _resource.error as ErrorResponse : null;
   int? get errorCode => errorResponse?.code;
+  bool get isTokenAlreadyUsed {
+    final response = errorResponse;
+    if (response == null) return false;
+    if (response.code != 409 || response.error != 'data_conflict') {
+      return false;
+    }
+    return response.details.contains('verification token has already been used');
+  }
   bool get canResendVerification =>
       errorCode == 400 || errorCode == 410 || errorCode == 500;