Check if establishing relationship is possible

apps/enmeshed/lib/account/contacts/contacts_view.dart

@@ -359,31 +359,53 @@ class _ContactItem extends StatelessWidget {
   Widget build(BuildContext context) {
     final contact = item.contact;
 
+    final isRequestExpired = item.openContactRequest?.status == LocalRequestStatus.Expired;
+
     return DismissibleContactItem(
       contact: contact,
+      isRequestExpired: isRequestExpired,
       onTap: () => _onTap(context),
-      trailing:
-          item.openContactRequest != null
-              ? const Padding(padding: EdgeInsets.all(8), child: Icon(Icons.edit))
-              : IconButton(
-                icon: isFavoriteContact ? const Icon(Icons.star) : const Icon(Icons.star_border),
-                color: isFavoriteContact ? Theme.of(context).colorScheme.primary : Theme.of(context).colorScheme.shadow,
-                onPressed: () => toggleContactFavorite(contact),
-              ),
+      trailing: _TrailingIcon(
+        isRequestExpired: isRequestExpired,
+        isOpenContactRequest: item.openContactRequest != null,
+        isFavoriteContact: isFavoriteContact,
+        onToggleFavorite: () => toggleContactFavorite(contact),
+        onDeletePressed: () => _onDeletePressed(context),
+      ),
       onDeletePressed: _onDeletePressed,
+      subtitle: isRequestExpired ? Text(context.l10n.contacts_requestExpired, style: TextStyle(color: Theme.of(context).colorScheme.error)) : null,
     );
   }
 
-  void _onTap(BuildContext context) {
+  Future<void> _onTap(BuildContext context) async {
     final contact = item.contact;
 
     if (item.openContactRequest == null) {
-      context.push('/account/$accountId/contacts/${contact.id}');
+      unawaited(context.push('/account/$accountId/contacts/${contact.id}'));
       return;
     }
 
+    final session = GetIt.I.get<EnmeshedRuntime>().getSession(accountId);
     final request = item.openContactRequest!;
-    context.go('/account/$accountId/contacts/contact-request/${request.id}', extra: request);
+
+    final validateRelationshipCreationResponse = await validateRelationshipCreation(
+      accountId: accountId,
+      localRequestSource: request.source,
+      session: session,
+    );
+
+    if (!context.mounted) return;
+
+    if (validateRelationshipCreationResponse.success) return context.go('/account/$accountId/contacts/contact-request/${request.id}', extra: request);
+
+    final result = await showDialog<bool>(
+      context: context,
+      builder: (context) => CreateRelationshipErrorDialog(errorCode: validateRelationshipCreationResponse.errorCode!),
+    );
+
+    if (!context.mounted) return;
+
+    if (result != null && result) await _onDeletePressed(context);
   }
 
   Future<void> _onDeletePressed(BuildContext context) async {
@@ -395,6 +417,20 @@ class _ContactItem extends StatelessWidget {
     }
 
     final request = item.openContactRequest!;
+    final session = GetIt.I.get<EnmeshedRuntime>().getSession(accountId);
+
+    if (request.status == LocalRequestStatus.Expired) {
+      final deleteResult = await session.consumptionServices.incomingRequests.delete(requestId: request.id);
+
+      if (deleteResult.isError) {
+        GetIt.I.get<Logger>().e(deleteResult.error);
+
+        if (!context.mounted) return;
+
+        showErrorSnackbar(context: context, text: context.l10n.error_deleteRequestFailed);
+      }
+      return;
+    }
 
     final rejectItems = List<DecideRequestParametersItem>.from(
       request.items.map((e) {
@@ -409,7 +445,6 @@ class _ContactItem extends StatelessWidget {
 
     final rejectParams = DecideRequestParameters(requestId: request.id, items: rejectItems);
 
-    final session = GetIt.I.get<EnmeshedRuntime>().getSession(accountId);
     final result = await session.consumptionServices.incomingRequests.reject(params: rejectParams);
     if (result.isError) GetIt.I.get<Logger>().e(result.error);
   }
@@ -435,3 +470,32 @@ class _EmptyContactsIndicator extends StatelessWidget {
     );
   }
 }
+
+class _TrailingIcon extends StatelessWidget {
+  final bool isRequestExpired;
+  final bool isFavoriteContact;
+  final bool isOpenContactRequest;
+  final VoidCallback onDeletePressed;
+  final VoidCallback onToggleFavorite;
+
+  const _TrailingIcon({
+    required this.isRequestExpired,
+    required this.isFavoriteContact,
+    required this.isOpenContactRequest,
+    required this.onDeletePressed,
+    required this.onToggleFavorite,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    if (isRequestExpired) return IconButton(icon: const Icon(Icons.cancel_outlined), onPressed: onDeletePressed);
+
+    if (isOpenContactRequest) return const Padding(padding: EdgeInsets.all(8), child: Icon(Icons.edit));
+
+    return IconButton(
+      icon: isFavoriteContact ? const Icon(Icons.star) : const Icon(Icons.star_border),
+      color: isFavoriteContact ? Theme.of(context).colorScheme.primary : Theme.of(context).colorScheme.onSurfaceVariant,
+      onPressed: onToggleFavorite,
+    );
+  }
+}

apps/enmeshed/lib/account/contacts/request_screen.dart

@@ -26,6 +26,7 @@ class RequestScreen extends StatelessWidget {
           requestDVO: requestDVO,
           acceptRequestText: context.l10n.home_addContact,
           validationErrorDescription: context.l10n.contact_request_validationErrorDescription,
+          validateCreateRelationship: requestDVO?.source?.type == LocalRequestSourceType.RelationshipTemplate,
           onAfterAccept: () {
             if (context.mounted) context.go('/account/$accountId/contacts');
           },

apps/enmeshed/lib/account/contacts/widgets/dismissible_contact_item.dart

@@ -8,6 +8,7 @@ class DismissibleContactItem extends StatefulWidget {
   final IdentityDVO contact;
   final VoidCallback onTap;
   final void Function(BuildContext) onDeletePressed;
+  final bool isRequestExpired;
   final Widget? trailing;
   final Widget? subtitle;
   final String? query;
@@ -17,6 +18,7 @@ class DismissibleContactItem extends StatefulWidget {
     required this.contact,
     required this.onTap,
     required this.onDeletePressed,
+    required this.isRequestExpired,
     this.trailing,
     this.subtitle,
     this.query,
@@ -53,8 +55,9 @@ class _DismissibleContactItemState extends State<DismissibleContactItem> with Si
   @override
   Widget build(BuildContext context) {
     final coloringStatus = [RelationshipStatus.Terminated, RelationshipStatus.DeletionProposed];
+
     final tileColor =
-        widget.contact.relationship == null || coloringStatus.contains(widget.contact.relationship!.status)
+        (widget.contact.relationship == null && !widget.isRequestExpired) || coloringStatus.contains(widget.contact.relationship?.status)
             ? Theme.of(context).colorScheme.primaryContainer
             : null;
 

apps/enmeshed/lib/core/modals/create_relationship_error_dialog.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+import '/core/utils/extensions.dart';
+
+class CreateRelationshipErrorDialog extends StatelessWidget {
+  final String errorCode;
+
+  const CreateRelationshipErrorDialog({required this.errorCode, super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      icon: _icon(context),
+      title: Text(_title(context)),
+      content: Text(_content(context), textAlign: TextAlign.center, style: Theme.of(context).textTheme.bodyMedium),
+      actions: [
+        FilledButton(
+          onPressed: errorCode == 'error.transport.relationships.relationshipTemplateIsExpired' ? () => context.pop(true) : () => context.pop(false),
+          child: Text(
+            errorCode == 'error.transport.relationships.relationshipTemplateIsExpired'
+                ? context.l10n.error_deleteRequest
+                : context.l10n.error_understood,
+          ),
+        ),
+      ],
+      actionsAlignment: MainAxisAlignment.center,
+    );
+  }
+
+  Icon _icon(BuildContext context) => switch (errorCode) {
+    'error.transport.relationships.activeIdentityDeletionProcessOfOwnerOfRelationshipTemplate' => Icon(
+      Icons.cancel,
+      color: Theme.of(context).colorScheme.error,
+    ),
+    _ => Icon(Icons.error, color: Theme.of(context).colorScheme.error),
+  };
+
+  String _title(BuildContext context) => switch (errorCode) {
+    'error.transport.relationships.relationshipNotYetDecomposedByPeer' => context.l10n.errorDialog_relationshipNotYetDecomposedByPeer_title,
+    'error.transport.relationships.activeIdentityDeletionProcessOfOwnerOfRelationshipTemplate' =>
+      context.l10n.errorDialog_activeIdentityDeletionProcessOfOwnerOfRelationshipTemplate_title,
+    'error.transport.relationships.relationshipTemplateIsExpired' => context.l10n.errorDialog_relationshipTemplateIsExpired_title,
+    'error.relationshipTemplateProcessedModule.requestExpired' => context.l10n.errorDialog_requestExpired_title,
+    _ => context.l10n.errorDialog_title,
+  };
+
+  String _content(BuildContext context) => switch (errorCode) {
+    'error.transport.relationships.relationshipNotYetDecomposedByPeer' => context.l10n.errorDialog_relationshipNotYetDecomposedByPeer_description,
+    'error.transport.relationships.activeIdentityDeletionProcessOfOwnerOfRelationshipTemplate' =>
+      context.l10n.errorDialog_activeIdentityDeletionProcessOfOwnerOfRelationshipTemplate_description,
+    'error.transport.relationships.relationshipTemplateIsExpired' => context.l10n.errorDialog_relationshipTemplateIsExpired_description,
+    'error.relationshipTemplateProcessedModule.requestExpired' => context.l10n.errorDialog_requestExpired_description,
+    _ => context.l10n.errorDialog_description,
+  };
+}

apps/enmeshed/lib/core/modals/modals.dart

@@ -1,5 +1,6 @@
 export 'create_attribute.dart';
 export 'create_recovery_kit/create_recovery_kit.dart';
+export 'create_relationship_error_dialog.dart';
 export 'delete_attribute.dart';
 export 'delete_local_data.dart';
 export 'enter_password/enter_password.dart';

apps/enmeshed/lib/core/utils/contact_utils.dart

@@ -82,7 +82,11 @@ Future<List<IdentityDVO>> getContacts({required Session session}) async {
 Future<List<LocalRequestDVO>> incomingOpenRequestsFromRelationshipTemplate({required Session session}) async {
   final incomingRequestResult = await session.consumptionServices.incomingRequests.getRequests(
     query: {
-      'status': QueryValue.stringList([LocalRequestStatus.DecisionRequired.name, LocalRequestStatus.ManualDecisionRequired.name]),
+      'status': QueryValue.stringList([
+        LocalRequestStatus.DecisionRequired.name,
+        LocalRequestStatus.ManualDecisionRequired.name,
+        LocalRequestStatus.Expired.name,
+      ]),
       'source.type': QueryValue.string(LocalRequestSourceType.RelationshipTemplate.name),
     },
   );
@@ -147,3 +151,19 @@ Future<void> deleteContact({
 
   onContactDeleted();
 }
+
+Future<({bool success, String? errorCode})> validateRelationshipCreation({
+  required String accountId,
+  required Session session,
+  LocalRequestSourceDVO? localRequestSource,
+}) async {
+  if (localRequestSource == null) return (success: true, errorCode: null);
+
+  final response = await session.transportServices.relationships.canCreateRelationship(templateId: localRequestSource.reference);
+
+  if (response.value.isSuccess) return (success: true, errorCode: null);
+
+  final failureResponse = response.value as CanCreateRelationshipFailureResponse;
+
+  return (success: false, errorCode: failureResponse.code);
+}

apps/enmeshed/lib/core/widgets/request_dvo_renderer.dart

@@ -11,6 +11,7 @@ import 'package:logger/logger.dart';
 import 'package:renderers/renderers.dart';
 
 import '../modals/create_attribute.dart';
+import '../modals/create_relationship_error_dialog.dart';
 import '../types/types.dart';
 import '../utils/utils.dart';
 import 'contact_circle_avatar.dart';
@@ -24,6 +25,7 @@ class RequestDVORenderer extends StatefulWidget {
   final String validationErrorDescription;
   final VoidCallback onAfterAccept;
   final bool showHeader;
+  final bool validateCreateRelationship;
   final LocalRequestDVO? requestDVO;
   final String? description;
 
@@ -35,6 +37,7 @@ class RequestDVORenderer extends StatefulWidget {
     required this.validationErrorDescription,
     required this.onAfterAccept,
     this.showHeader = true,
+    this.validateCreateRelationship = false,
     this.requestDVO,
     this.description,
     super.key,
@@ -55,6 +58,7 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
   GetIdentityInfoResponse? _identityInfo;
 
   bool _loading = false;
+  late bool _canAcceptRequest;
 
   @override
   void initState() {
@@ -63,13 +67,17 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
     final session = GetIt.I.get<EnmeshedRuntime>().getSession(widget.accountId);
     _request = widget.requestDVO;
 
+    _canAcceptRequest = !widget.validateCreateRelationship;
+
     _updateIdentityInfo();
 
     if (_request == null) {
       _loadRequest(session);
     } else {
       _setController(session, _request!);
     }
+
+    _canCreateRelationship();
   }
 
   @override
@@ -95,6 +103,8 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
       } else {
         _setController(session, _request!);
       }
+
+      _canCreateRelationship();
     }
 
     super.didUpdateWidget(oldWidget);
@@ -165,7 +175,7 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
               children: [
                 OutlinedButton(onPressed: _loading && _request != null ? null : _rejectRequest, child: Text(context.l10n.reject)),
                 Gaps.w8,
-                FilledButton(onPressed: _acceptRequest, child: Text(widget.acceptRequestText)),
+                FilledButton(onPressed: _onAcceptButtonPressed, child: Text(widget.acceptRequestText)),
               ],
             ),
           ),
@@ -194,6 +204,14 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
 
   void _setController(Session session, LocalRequestDVO request) => _controller = RequestRendererController(request: request);
 
+  Future<void> _onAcceptButtonPressed() async {
+    await _canCreateRelationship();
+
+    if (!_canAcceptRequest) return;
+
+    await _acceptRequest();
+  }
+
   Future<void> _acceptRequest() async {
     if (_loading) return;
 
@@ -230,6 +248,13 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
     widget.onAfterAccept();
   }
 
+  Future<void> _deleteRequest() async {
+    final session = GetIt.I.get<EnmeshedRuntime>().getSession(widget.accountId);
+    final deleteResult = await session.consumptionServices.incomingRequests.delete(requestId: _request!.id);
+
+    if (deleteResult.isError) GetIt.I.get<Logger>().e(deleteResult.error);
+  }
+
   Future<void> _rejectRequest() async {
     setState(() => _loading = true);
 
@@ -287,6 +312,34 @@ class _RequestDVORendererState extends State<RequestDVORenderer> {
 
     return choice;
   }
+
+  Future<void> _canCreateRelationship() async {
+    if (!widget.validateCreateRelationship) return;
+
+    final session = GetIt.I.get<EnmeshedRuntime>().getSession(widget.accountId);
+
+    final validateRelationshipCreationResponse = await validateRelationshipCreation(
+      accountId: widget.accountId,
+      localRequestSource: _request?.source,
+      session: session,
+    );
+
+    setState(() => _canAcceptRequest = validateRelationshipCreationResponse.success);
+
+    if (_canAcceptRequest || !mounted) return;
+
+    final result = await showDialog<bool>(
+      barrierDismissible: false,
+      context: context,
+      builder: (context) => CreateRelationshipErrorDialog(errorCode: validateRelationshipCreationResponse.errorCode!),
+    );
+
+    if (result != null && result) await _deleteRequest();
+
+    if (!mounted) return;
+
+    context.pop();
+  }
 }
 
 class _AttributeSwitcher extends StatefulWidget {