Apply new min & max name policy

lib/helpers/api_helper.dart

@@ -21,10 +21,15 @@ class APIHelper {
       //Add API tokens
       request.addString("client", config().clientName);
 
-      //Add user tokens (if required)
+      //Add user token (if required)
       if (request.needLogin) {
         final token = (await PreferencesHelper.getInstance()).getLoginToken();
-        assert(token != null);
+
+        if (token == null) {
+          EventsHelper.emit(InvalidLoginTokensEvent());
+          throw new Exception("No login token available!");
+        }
+
         request.addString("token", token);
       }
 

lib/helpers/server_config_helper.dart

@@ -21,6 +21,7 @@ class ServerConfigurationHelper {
     final passwordPolicy = response["password_policy"];
     final dataConservationPolicy = response["data_conservation_policy"];
     final conversationsPolicy = response["conversations_policy"];
+    final accountInformationPolicy = response["account_info_policy"];
 
     _config = ServerConfig(
       minSupportedMobileVersion:
@@ -67,13 +68,19 @@ class ServerConfigurationHelper {
         writingEventInterval: conversationsPolicy["writing_event_interval"],
         writingEventLifetime: conversationsPolicy["writing_event_lifetime"],
         maxMessageImageWidth: conversationsPolicy["max_message_image_width"],
-          maxMessageImageHeight:
-              conversationsPolicy["max_message_image_height"],
+        maxMessageImageHeight: conversationsPolicy["max_message_image_height"],
         maxThumbnailWidth: conversationsPolicy["max_thumbnail_width"],
         maxThumbnailHeight: conversationsPolicy["max_thumbnail_height"],
         maxLogoWidth: conversationsPolicy["max_logo_width"],
         maxLogoHeight: conversationsPolicy["max_logo_height"],
-        ));
+      ),
+      accountInformationPolicy: AccountInformationPolicy(
+        minFirstNameLength: accountInformationPolicy["min_first_name_length"],
+        maxFirstNameLength: accountInformationPolicy["max_first_name_length"],
+        minLastNameLength: accountInformationPolicy["min_last_name_length"],
+        maxLastNameLength: accountInformationPolicy["max_last_name_length"],
+      ),
+    );
   }
 
   /// Get current server configuration, throwing if it is not loaded yet

lib/models/server_config.dart

@@ -112,6 +112,23 @@ class ConversationsPolicy {
         assert(maxLogoHeight != null);
 }
 
+class AccountInformationPolicy {
+  final int minFirstNameLength;
+  final int maxFirstNameLength;
+  final int minLastNameLength;
+  final int maxLastNameLength;
+
+  const AccountInformationPolicy({
+    @required this.minFirstNameLength,
+    @required this.maxFirstNameLength,
+    @required this.minLastNameLength,
+    @required this.maxLastNameLength,
+  })  : assert(minFirstNameLength != null),
+        assert(maxFirstNameLength != null),
+        assert(minLastNameLength != null),
+        assert(maxLastNameLength != null);
+}
+
 class ServerConfig {
   final Version minSupportedMobileVersion;
   final String termsURL;
@@ -121,6 +138,7 @@ class ServerConfig {
   final PasswordPolicy passwordPolicy;
   final ServerDataConservationPolicy dataConservationPolicy;
   final ConversationsPolicy conversationsPolicy;
+  final AccountInformationPolicy accountInformationPolicy;
 
   const ServerConfig({
     @required this.minSupportedMobileVersion,
@@ -131,6 +149,7 @@ class ServerConfig {
     @required this.passwordPolicy,
     @required this.dataConservationPolicy,
     @required this.conversationsPolicy,
+    @required this.accountInformationPolicy,
   })  : assert(minSupportedMobileVersion != null),
         assert(termsURL != null),
         assert(playStoreURL != null),
@@ -138,5 +157,6 @@ class ServerConfig {
         assert(notificationsPolicy != null),
         assert(passwordPolicy != null),
         assert(dataConservationPolicy != null),
-        assert(conversationsPolicy != null);
+        assert(conversationsPolicy != null),
+        assert(accountInformationPolicy != null);
 }

lib/ui/routes/create_account_route.dart

@@ -44,9 +44,13 @@ class __CreateAccountRouteBodyState extends State<_CreateAccountRouteBody> {
 
   bool _showErrors = false;
 
-  bool get _isFirstNameValid => _firstNameController.text.length > 3;
+  bool get _isFirstNameValid =>
+      _firstNameController.text.length >=
+      srvConfig.accountInformationPolicy.minFirstNameLength;
 
-  bool get _isLastNameValid => _lastNameController.text.length > 3;
+  bool get _isLastNameValid =>
+      _lastNameController.text.length >=
+      srvConfig.accountInformationPolicy.minLastNameLength;
 
   bool get _isEmailValid => validateEmail(_emailController.text);
 
@@ -97,6 +101,8 @@ class __CreateAccountRouteBodyState extends State<_CreateAccountRouteBody> {
                 label: tr("First name"),
                 onEdited: _updateUI,
                 icon: Icon(Icons.perm_identity),
+                maxLength:
+                    srvConfig.accountInformationPolicy.maxFirstNameLength,
                 error: _showErrors && !_isFirstNameValid
                     ? tr("Invalid first name!")
                     : null,
@@ -108,6 +114,7 @@ class __CreateAccountRouteBodyState extends State<_CreateAccountRouteBody> {
                 label: tr("Last name"),
                 onEdited: _updateUI,
                 icon: Icon(Icons.perm_identity),
+                maxLength: srvConfig.accountInformationPolicy.maxLastNameLength,
                 error: _showErrors && !_isLastNameValid
                     ? tr("Invalid last name!")
                     : null,
@@ -268,6 +275,7 @@ class _InputEntry extends StatelessWidget {
   final String error;
   final Widget icon;
   final TextInputType keyboard;
+  final int maxLength;
 
   const _InputEntry({
     Key key,
@@ -278,6 +286,7 @@ class _InputEntry extends StatelessWidget {
     this.error,
     this.icon,
     this.keyboard,
+    this.maxLength,
   })  : assert(controller != null),
         assert(label != null),
         assert(onEdited != null),
@@ -291,6 +300,7 @@ class _InputEntry extends StatelessWidget {
       onChanged: (s) => onEdited(),
       keyboardType: keyboard,
       obscureText: isPassword,
+      maxLength: maxLength,
       decoration: InputDecoration(
         alignLabelWithHint: true,
         errorText: error,

lib/ui/routes/settings/general_account_settings.dart

@@ -1,5 +1,6 @@
 import 'package:comunic/enums/user_page_visibility.dart';
 import 'package:comunic/helpers/serialization/user_list_serialization_helper.dart';
+import 'package:comunic/helpers/server_config_helper.dart';
 import 'package:comunic/helpers/settings_helper.dart';
 import 'package:comunic/models/general_settings.dart';
 import 'package:comunic/ui/dialogs/multi_choices_dialog.dart';
@@ -86,7 +87,9 @@ class _GeneralAccountSettingsScreenState
           _settings.firstName = s;
           _updateSettings();
         },
-        checkInput: (s) => s.length >= 3,
+        maxLength: srvConfig.accountInformationPolicy.maxFirstNameLength,
+        checkInput: (s) =>
+            s.length >= srvConfig.accountInformationPolicy.minFirstNameLength,
       ),
 
       // Last name
@@ -97,7 +100,9 @@ class _GeneralAccountSettingsScreenState
           _settings.lastName = s;
           _updateSettings();
         },
-        checkInput: (s) => s.length >= 3,
+        maxLength: srvConfig.accountInformationPolicy.maxLastNameLength,
+        checkInput: (s) =>
+            s.length >= srvConfig.accountInformationPolicy.minLastNameLength,
       ),
 
       // Emails settings