Initial commit
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tajniak81
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import "package:flutter/material.dart";
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import "../main.dart";
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import "../models.dart";
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import "../format.dart";
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import "../theme.dart";
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/// Admin-only screen to manage user accounts: list, create, change role,
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/// reset password, delete. The API enforces the real access control and the
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/// last-admin / self-delete guards; the UI mirrors them to avoid dead actions.
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class AdminUsersScreen extends StatefulWidget {
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const AdminUsersScreen({super.key});
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@override
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State<AdminUsersScreen> createState() => _AdminUsersScreenState();
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}
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class _AdminUsersScreenState extends State<AdminUsersScreen> {
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late Future<List<AdminUser>> _future;
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@override
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void initState() {
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super.initState();
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_future = apiClient.listUsers();
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}
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void _reload() => setState(() => _future = apiClient.listUsers());
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String? get _myId => authService.user?.id;
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void _snack(String msg) =>
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ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(msg)));
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Future<void> _changeRole(AdminUser u, String role) async {
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try {
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await apiClient.updateUser(u.id, role: role);
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_reload();
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} catch (e) {
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_snack("$e");
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}
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}
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Future<void> _resetPassword(AdminUser u) async {
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final controller = TextEditingController();
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final saved = await showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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title: Text("Reset password — ${u.email}"),
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content: TextField(
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controller: controller,
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autofocus: true,
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decoration: const InputDecoration(
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labelText: "New password (min 8)",
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border: OutlineInputBorder(),
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),
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),
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actions: [
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TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text("Cancel")),
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FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text("Set password")),
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],
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),
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);
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if (saved != true) return;
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try {
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await apiClient.setUserPassword(u.id, controller.text);
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_snack("Password updated.");
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} catch (e) {
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_snack("$e");
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}
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}
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Future<void> _delete(AdminUser u) async {
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (ctx) => AlertDialog(
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title: const Text("Delete user?"),
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content: Text("Delete ${u.name.isEmpty ? u.email : u.name}? This cannot be undone."),
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actions: [
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TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text("Cancel")),
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FilledButton(
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style: FilledButton.styleFrom(backgroundColor: DriverVault.danger),
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onPressed: () => Navigator.pop(ctx, true),
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child: const Text("Delete"),
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),
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],
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),
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);
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if (confirmed != true) return;
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try {
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await apiClient.deleteUser(u.id);
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_reload();
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} catch (e) {
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_snack("$e");
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}
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}
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Future<void> _createUser() async {
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final created = await showModalBottomSheet<bool>(
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context: context,
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isScrollControlled: true,
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builder: (_) => const _CreateUserSheet(),
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);
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if (created == true) _reload();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(title: const Text("Users")),
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floatingActionButton: FloatingActionButton.extended(
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onPressed: _createUser,
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icon: const Icon(Icons.person_add_alt_1),
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label: const Text("Add user"),
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),
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body: FutureBuilder<List<AdminUser>>(
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future: _future,
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builder: (context, snap) {
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if (snap.connectionState == ConnectionState.waiting) {
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return const Center(child: CircularProgressIndicator());
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}
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if (snap.hasError) {
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return Center(child: Text("${snap.error}"));
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}
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final users = snap.data ?? [];
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final adminCount = users.where((u) => u.role == "admin").length;
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return ListView.separated(
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padding: const EdgeInsets.all(12),
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itemCount: users.length,
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separatorBuilder: (_, __) => const Divider(height: 1),
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itemBuilder: (context, i) {
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final u = users[i];
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final isSelf = u.id == _myId;
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final lastAdmin = u.role == "admin" && adminCount <= 1;
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return ListTile(
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contentPadding: const EdgeInsets.symmetric(horizontal: 4),
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title: Row(
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children: [
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Flexible(child: Text(u.email, overflow: TextOverflow.ellipsis)),
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if (isSelf)
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const Padding(
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padding: EdgeInsets.only(left: 6),
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child: Text("(you)", style: TextStyle(color: Colors.grey, fontSize: 12)),
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),
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],
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),
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subtitle: Text(
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"${u.name.isEmpty ? '—' : u.name} · ${formatDate(DateTime.tryParse(u.created))}",
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style: const TextStyle(fontSize: 12),
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),
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trailing: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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DropdownButton<String>(
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value: u.role == "admin" ? "admin" : "user",
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underline: const SizedBox.shrink(),
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// Disable demoting the last admin.
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onChanged: lastAdmin ? null : (v) => v == null ? null : _changeRole(u, v),
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items: const [
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DropdownMenuItem(value: "user", child: Text("user")),
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DropdownMenuItem(value: "admin", child: Text("admin")),
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],
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),
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PopupMenuButton<String>(
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onSelected: (choice) {
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if (choice == "password") _resetPassword(u);
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if (choice == "delete") _delete(u);
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},
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itemBuilder: (_) => [
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const PopupMenuItem(value: "password", child: Text("Reset password")),
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PopupMenuItem(
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value: "delete",
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// Can't delete yourself or the last admin.
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enabled: !isSelf && !lastAdmin,
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child: const Text("Delete", style: TextStyle(color: DriverVault.danger)),
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),
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],
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),
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],
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),
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);
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},
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);
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},
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),
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);
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}
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}
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class _CreateUserSheet extends StatefulWidget {
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const _CreateUserSheet();
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@override
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State<_CreateUserSheet> createState() => _CreateUserSheetState();
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}
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class _CreateUserSheetState extends State<_CreateUserSheet> {
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final _email = TextEditingController();
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final _name = TextEditingController();
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final _password = TextEditingController();
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String _role = "user";
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bool _saving = false;
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String? _error;
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@override
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void dispose() {
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_email.dispose();
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_name.dispose();
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_password.dispose();
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super.dispose();
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}
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Future<void> _save() async {
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setState(() {
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_saving = true;
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_error = null;
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});
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try {
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await apiClient.createUser(
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email: _email.text.trim(),
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password: _password.text,
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name: _name.text.trim(),
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role: _role,
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);
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if (mounted) Navigator.pop(context, true);
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} catch (e) {
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setState(() => _error = e.toString());
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} finally {
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if (mounted) setState(() => _saving = false);
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}
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}
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: EdgeInsets.only(
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left: 16,
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right: 16,
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top: 16,
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bottom: MediaQuery.of(context).viewInsets.bottom + 16,
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text("Add a user",
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style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600)),
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const SizedBox(height: 12),
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if (_error != null)
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Padding(
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padding: const EdgeInsets.only(bottom: 8),
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child: Text(_error!, style: const TextStyle(color: DriverVault.danger)),
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),
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TextField(
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controller: _email,
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keyboardType: TextInputType.emailAddress,
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decoration: const InputDecoration(labelText: "Email", border: OutlineInputBorder()),
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),
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const SizedBox(height: 8),
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TextField(
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controller: _name,
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decoration: const InputDecoration(labelText: "Name", border: OutlineInputBorder()),
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),
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const SizedBox(height: 8),
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Row(
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children: [
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Expanded(
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child: TextField(
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controller: _password,
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decoration: const InputDecoration(
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labelText: "Password (min 8)",
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border: OutlineInputBorder(),
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),
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),
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),
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const SizedBox(width: 8),
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DropdownButton<String>(
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value: _role,
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onChanged: (v) => setState(() => _role = v ?? "user"),
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items: const [
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DropdownMenuItem(value: "user", child: Text("user")),
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DropdownMenuItem(value: "admin", child: Text("admin")),
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],
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),
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],
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),
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const SizedBox(height: 12),
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SizedBox(
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width: double.infinity,
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child: FilledButton(
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onPressed: _saving ? null : _save,
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child: Text(_saving ? "Creating…" : "Create user"),
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),
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),
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],
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),
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);
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}
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}
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