redesigned payment page + a lot of fixes

frontend/pweb/lib/pages/invitations/page/page.dart

@@ -0,0 +1,75 @@
+import 'package:flutter/material.dart';
+
+import 'package:provider/provider.dart';
+
+import 'package:pweb/controllers/invitations/page.dart';
+import 'package:pweb/pages/invitations/page/providers.dart';
+import 'package:pweb/pages/invitations/page/view.dart';
+import 'package:pweb/utils/error/snackbar.dart';
+
+import 'package:pweb/generated/i18n/app_localizations.dart';
+
+
+class InvitationsPage extends StatefulWidget {
+  const InvitationsPage({super.key});
+
+  @override
+  State<InvitationsPage> createState() => _InvitationsPageState();
+}
+
+class _InvitationsPageState extends State<InvitationsPage> {
+  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
+  final TextEditingController _emailController = TextEditingController();
+  final TextEditingController _firstNameController = TextEditingController();
+  final TextEditingController _lastNameController = TextEditingController();
+  final TextEditingController _messageController = TextEditingController();
+
+  Future<void> _sendInvitation(BuildContext context) async {
+    final form = _formKey.currentState;
+    if (form == null || !form.validate()) return;
+
+    final loc = AppLocalizations.of(context)!;
+
+    await executeActionWithNotification(
+      context: context,
+      action: () => context.read<InvitationsPageController>().sendInvitation(
+        email: _emailController.text,
+        name: _firstNameController.text,
+        lastName: _lastNameController.text,
+        comment: _messageController.text,
+      ),
+      successMessage: loc.invitationCreatedSuccess,
+      errorMessage: loc.errorCreatingInvitation,
+    );
+
+    _emailController.clear();
+    _firstNameController.clear();
+    _lastNameController.clear();
+    _messageController.clear();
+  }
+
+  @override
+  void dispose() {
+    _emailController.dispose();
+    _firstNameController.dispose();
+    _lastNameController.dispose();
+    _messageController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return InvitationsPageProviders(
+      child: Builder(
+        builder: (context) => InvitationsPageView(
+          formKey: _formKey,
+          emailController: _emailController,
+          firstNameController: _firstNameController,
+          lastNameController: _lastNameController,
+          messageController: _messageController,
+          onSubmit: () => _sendInvitation(context),
+        ),
+      ),
+    );
+  }
+}

frontend/pweb/lib/pages/invitations/page/providers.dart

@@ -0,0 +1,38 @@
+import 'package:flutter/material.dart';
+
+import 'package:provider/provider.dart';
+
+import 'package:pshared/provider/account.dart';
+import 'package:pshared/provider/invitations.dart';
+import 'package:pshared/provider/permissions.dart';
+
+import 'package:pweb/controllers/invitations/page.dart';
+
+
+class InvitationsPageProviders extends StatelessWidget {
+  final Widget child;
+
+  const InvitationsPageProviders({
+    super.key,
+    required this.child,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ChangeNotifierProxyProvider3<
+      PermissionsProvider,
+      InvitationsProvider,
+      AccountProvider,
+      InvitationsPageController
+    >(
+      create: (_) => InvitationsPageController(),
+      update: (_, permissions, invitations, account, controller) => controller!
+        ..update(
+          permissions: permissions,
+          invitations: invitations,
+          account: account,
+        ),
+      child: child,
+    );
+  }
+}

frontend/pweb/lib/pages/invitations/page/view.dart

@@ -0,0 +1,79 @@
+import 'package:flutter/material.dart';
+
+import 'package:provider/provider.dart';
+
+import 'package:pshared/models/resources.dart';
+import 'package:pshared/provider/permissions.dart';
+
+import 'package:pweb/controllers/invitations/page.dart';
+import 'package:pweb/pages/invitations/widgets/header.dart';
+import 'package:pweb/pages/invitations/widgets/form/form.dart';
+import 'package:pweb/pages/invitations/widgets/list/list.dart';
+import 'package:pweb/pages/loader.dart';
+
+import 'package:pweb/generated/i18n/app_localizations.dart';
+
+
+class InvitationsPageView extends StatelessWidget {
+  final GlobalKey<FormState> formKey;
+  final TextEditingController emailController;
+  final TextEditingController firstNameController;
+  final TextEditingController lastNameController;
+  final TextEditingController messageController;
+  final VoidCallback onSubmit;
+
+  const InvitationsPageView({
+    super.key,
+    required this.formKey,
+    required this.emailController,
+    required this.firstNameController,
+    required this.lastNameController,
+    required this.messageController,
+    required this.onSubmit,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final loc = AppLocalizations.of(context)!;
+    final permissions = context.watch<PermissionsProvider>();
+    final canCreateRoles = permissions.canCreate(ResourceType.roles);
+    final ui = context.watch<InvitationsPageController>();
+
+    if (!permissions.canRead(ResourceType.invitations)) {
+      return PageViewLoader(
+        child: Center(child: Text(loc.errorAccessDenied)),
+      );
+    }
+
+    return PageViewLoader(
+      child: SafeArea(
+        child: SingleChildScrollView(
+          padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              InvitationsHeader(loc: loc),
+              const SizedBox(height: 16),
+              InvitationsForm(
+                formKey: formKey,
+                emailController: emailController,
+                firstNameController: firstNameController,
+                lastNameController: lastNameController,
+                messageController: messageController,
+                canCreateRoles: canCreateRoles,
+                expiryDays: ui.expiryDays,
+                onExpiryChanged: ui.setExpiryDays,
+                selectedRoleRef: ui.selectedRoleRef,
+                onRoleChanged: ui.setSelectedRoleRef,
+                canCreate: permissions.canCreate(ResourceType.invitations),
+                onSubmit: onSubmit,
+              ),
+              const SizedBox(height: 24),
+              const InvitationsList(),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}