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Finlytic/FinlyticApp/lib/features/admin/views/admin_users_screen.dart
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Dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../../core/network/api_client.dart';
import '../../../core/network/signalr_service.dart';
import '../../../core/theme/app_theme.dart';
import '../../../core/widgets/glass_container.dart';
import '../../../core/widgets/status_badge.dart';
import '../models/admin_update_user_request_dto.dart';
import '../models/admin_user_model.dart';
import '../bloc/admin_bloc.dart';
import '../repositories/admin_repository.dart';
import '../widgets/admin_kpi_header.dart';
import '../widgets/create_user_dialog.dart';
import '../widgets/edit_user_dialog.dart';
import '../widgets/system_diagnostics_widget.dart';
/// Role-Restricted Admin Panel Screen managing users, service settings, and system health.
class AdminUsersScreen extends StatelessWidget {
final ApiClient apiClient;
final SignalRService? signalRService;
const AdminUsersScreen({
super.key,
required this.apiClient,
this.signalRService,
});
@override
Widget build(BuildContext context) {
return BlocProvider(
create: (context) => AdminBloc(
repository: AdminRepository(apiClient: apiClient),
)..add(FetchAdminUsers()),
child: _AdminUsersScreenContent(
apiClient: apiClient,
signalRService: signalRService,
),
);
}
}
class _AdminUsersScreenContent extends StatefulWidget {
final ApiClient apiClient;
final SignalRService? signalRService;
const _AdminUsersScreenContent({
required this.apiClient,
this.signalRService,
});
@override
State<_AdminUsersScreenContent> createState() => _AdminUsersScreenContentState();
}
class _AdminUsersScreenContentState extends State<_AdminUsersScreenContent> with SingleTickerProviderStateMixin {
late TabController _tabController;
String _searchQuery = '';
String _roleFilter = 'Alle';
@override
void initState() {
super.initState();
_tabController = TabController(length: 2, vsync: this);
}
@override
void dispose() {
_tabController.dispose();
super.dispose();
}
void _openCreateUser(BuildContext context) async {
final res = await showDialog(context: context, builder: (_) => const CreateUserDialog());
if (res != null && context.mounted) {
context.read<AdminBloc>().add(CreateAdminUser(res));
}
}
void _openEditUser(BuildContext context, AdminUserModel user) async {
final res = await showDialog(context: context, builder: (_) => EditUserDialog(user: user));
if (res != null && context.mounted) {
context.read<AdminBloc>().add(UpdateAdminUser(user.id, res as AdminUpdateUserRequestDto));
}
}
void _toggleUserActiveStatus(BuildContext context, AdminUserModel user, bool newActive) {
final dto = AdminUpdateUserRequestDto(role: user.role, isActive: newActive);
context.read<AdminBloc>().add(UpdateAdminUser(user.id, dto));
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.transparent,
body: BlocBuilder<AdminBloc, AdminState>(
builder: (context, state) {
final users = state is AdminLoaded ? state.users : <AdminUserModel>[];
return Padding(
padding: const EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// Top Header Ribbon
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Container(
padding: const EdgeInsets.all(8),
decoration: BoxDecoration(
color: AppTheme.primaryEmerald.withValues(alpha: 0.15),
borderRadius: BorderRadius.circular(10),
border: Border.all(color: AppTheme.primaryEmerald.withValues(alpha: 0.3)),
),
child: Icon(Icons.admin_panel_settings_rounded, color: AppTheme.primaryEmerald, size: 22),
),
const SizedBox(width: 12),
const Text(
'Admin Control Panel',
style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold, letterSpacing: -0.5),
),
],
),
const SizedBox(height: 4),
Text(
'Zentrales Management für Nutzer, Mikrodienste & MQTT System-Bus',
style: TextStyle(fontSize: 12, color: AppTheme.textSecondary),
),
],
),
ElevatedButton.icon(
onPressed: () => _openCreateUser(context),
icon: const Icon(Icons.person_add_outlined, size: 18),
label: const Text('Nutzer Anlegen', style: TextStyle(fontWeight: FontWeight.bold)),
style: ElevatedButton.styleFrom(
backgroundColor: AppTheme.primaryEmerald,
foregroundColor: Colors.black,
padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 12),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
),
),
],
),
const SizedBox(height: 16),
// KPI Header Metrics
AdminKpiHeader(
users: users,
signalRService: widget.signalRService,
),
const SizedBox(height: 16),
// Tab Selector Ribbon
Container(
decoration: BoxDecoration(
color: AppTheme.glassSurface,
borderRadius: BorderRadius.circular(14),
border: Border.all(color: AppTheme.glassBorder),
),
child: TabBar(
controller: _tabController,
indicatorColor: AppTheme.primaryEmerald,
indicatorSize: TabBarIndicatorSize.tab,
labelColor: AppTheme.primaryEmerald,
unselectedLabelColor: AppTheme.textMuted,
labelStyle: const TextStyle(fontWeight: FontWeight.bold, fontSize: 13),
indicator: BoxDecoration(
color: AppTheme.primaryEmerald.withValues(alpha: 0.15),
borderRadius: BorderRadius.circular(12),
border: Border.all(color: AppTheme.primaryEmerald.withValues(alpha: 0.4)),
),
tabs: const [
Tab(icon: Icon(Icons.people_alt_outlined, size: 18), text: 'Nutzerverwaltung'),
Tab(icon: Icon(Icons.monitor_heart_outlined, size: 18), text: 'System-Diagnose & MQTT'),
],
),
),
const SizedBox(height: 16),
// Tab Content View
Expanded(
child: TabBarView(
controller: _tabController,
children: [
// Tab 1: User Management with Filter & Actions
_buildUserManagementTab(context, state, users),
// Tab 2: System Diagnostics & Microservices Health
SystemDiagnosticsWidget(
signalRService: widget.signalRService,
),
],
),
),
],
),
);
},
),
);
}
Widget _buildUserManagementTab(BuildContext context, AdminState state, List<AdminUserModel> allUsers) {
if (state is AdminLoading) {
return Center(child: CircularProgressIndicator(color: AppTheme.primaryEmerald));
}
if (state is AdminError) {
return Center(
child: GlassContainer(
padding: const EdgeInsets.all(24),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(Icons.error_outline_rounded, color: AppTheme.accentRed, size: 40),
const SizedBox(height: 12),
Text(state.message, style: TextStyle(color: AppTheme.textPrimary, fontWeight: FontWeight.bold)),
const SizedBox(height: 16),
ElevatedButton(
onPressed: () => context.read<AdminBloc>().add(FetchAdminUsers()),
style: ElevatedButton.styleFrom(backgroundColor: AppTheme.primaryEmerald, foregroundColor: Colors.black),
child: const Text('Erneut versuchen'),
),
],
),
),
);
}
// Apply Search Query & Role Filter
final filteredUsers = allUsers.where((u) {
final matchesSearch = u.fullName.toLowerCase().contains(_searchQuery.toLowerCase()) ||
u.email.toLowerCase().contains(_searchQuery.toLowerCase());
final matchesRole = _roleFilter == 'Alle' || u.role.toLowerCase() == _roleFilter.toLowerCase();
return matchesSearch && matchesRole;
}).toList();
return Column(
children: [
// Filter Bar (Search Field & Role Filter Chips)
Row(
children: [
Expanded(
child: TextField(
onChanged: (val) => setState(() => _searchQuery = val),
decoration: InputDecoration(
hintText: 'Benutzer nach Name oder E-Mail suchen...',
prefixIcon: Icon(Icons.search_rounded, color: AppTheme.textMuted),
suffixIcon: _searchQuery.isNotEmpty
? IconButton(
icon: const Icon(Icons.clear, size: 18),
onPressed: () => setState(() => _searchQuery = ''),
)
: null,
),
),
),
const SizedBox(width: 12),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
children: ['Alle', 'Admin', 'Premium', 'User'].map((role) {
final isSelected = _roleFilter == role;
return Padding(
padding: const EdgeInsets.only(right: 6),
child: ChoiceChip(
label: Text(role),
selected: isSelected,
selectedColor: AppTheme.primaryEmerald,
backgroundColor: AppTheme.glassSurface,
labelStyle: TextStyle(
color: isSelected ? Colors.black : AppTheme.textSecondary,
fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
fontSize: 12,
),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
side: BorderSide(color: isSelected ? AppTheme.primaryEmerald : AppTheme.glassBorder),
onSelected: (val) {
if (val) setState(() => _roleFilter = role);
},
),
);
}).toList(),
),
),
],
),
const SizedBox(height: 14),
// User Cards List
Expanded(
child: filteredUsers.isEmpty
? Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(Icons.person_search_outlined, size: 48, color: AppTheme.textMuted),
const SizedBox(height: 12),
Text(
'Keine passenden Benutzer gefunden.',
style: TextStyle(color: AppTheme.textMuted, fontSize: 14),
),
],
),
)
: ListView.builder(
itemCount: filteredUsers.length,
itemBuilder: (context, index) {
final u = filteredUsers[index];
final String role = u.role;
final bool isActive = u.isActive;
final Color roleColor = role == 'Admin'
? const Color(0xFFA855F7)
: role == 'Premium'
? AppTheme.primaryEmerald
: AppTheme.accentCyan;
final String initials = _getInitials(u.fullName.isNotEmpty ? u.fullName : u.email);
return GlassContainer(
margin: const EdgeInsets.only(bottom: 10),
padding: const EdgeInsets.all(14),
child: Row(
children: [
// Avatar Initials Circle
Container(
width: 42,
height: 42,
alignment: Alignment.center,
decoration: BoxDecoration(
color: roleColor.withValues(alpha: 0.2),
shape: BoxShape.circle,
border: Border.all(color: roleColor, width: 1.5),
),
child: Text(
initials,
style: TextStyle(fontWeight: FontWeight.bold, color: roleColor, fontSize: 14),
),
),
const SizedBox(width: 14),
// User Name & Email
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
Text(
u.fullName.isNotEmpty ? u.fullName : u.email,
style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
),
const SizedBox(width: 8),
StatusBadge(label: role, color: roleColor),
],
),
const SizedBox(height: 2),
Text(
u.email,
style: TextStyle(fontSize: 12, color: AppTheme.textSecondary),
),
],
),
),
// Active/Inactive Quick Switch Toggle
Row(
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Text(
isActive ? 'Aktiv' : 'Gesperrt',
style: TextStyle(
fontSize: 12,
fontWeight: FontWeight.bold,
color: isActive ? AppTheme.primaryEmerald : AppTheme.accentRed,
),
),
],
),
const SizedBox(width: 8),
Switch(
value: isActive,
activeThumbColor: AppTheme.primaryEmerald,
onChanged: (val) => _toggleUserActiveStatus(context, u, val),
),
const SizedBox(width: 8),
IconButton.filledTonal(
icon: const Icon(Icons.edit_outlined, size: 18),
tooltip: 'Benutzer Bearbeiten',
onPressed: () => _openEditUser(context, u),
),
],
),
],
),
);
},
),
),
],
);
}
String _getInitials(String name) {
if (name.isEmpty) return 'U';
final parts = name.trim().split(' ');
if (parts.length >= 2) {
return '${parts[0][0]}${parts[1][0]}'.toUpperCase();
}
return name.substring(0, name.length >= 2 ? 2 : 1).toUpperCase();
}
}