feat(app): Flutter-клиент — логин, дашборд, потоки, категории, транзакции, правила

Riverpod + go_router с auth-guard, NavigationRail на широком экране и bottom bar на узком. Токены в flutter_secure_storage, на web access живёт в памяти. Интерцептор подставляет токен и делает ровно один refresh на 401. Деньги приходят строками и форматируются через Decimal: парсить их в double значило бы терять копейки ровно там, где бэкенд их бережёт.
2026-09-18 13:44:09 +03:00
parent b9c12fa1a1
commit ce0966fca2
99 changed files with 6284 additions and 0 deletions
@@ -0,0 +1,94 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+
+class _Destination {
+  const _Destination(this.path, this.icon, this.selectedIcon, this.label);
+  final String path;
+  final IconData icon;
+  final IconData selectedIcon;
+  final String label;
+}
+
+const _destinations = [
+  _Destination('/', Icons.dashboard_outlined, Icons.dashboard, 'Обзор'),
+  _Destination('/accounts', Icons.account_balance_outlined, Icons.account_balance, 'Счета'),
+  _Destination('/cashflow', Icons.swap_horiz_outlined, Icons.swap_horiz, 'Потоки'),
+  _Destination('/categories', Icons.category_outlined, Icons.category, 'Категории'),
+  _Destination(
+      '/transactions', Icons.receipt_long_outlined, Icons.receipt_long, 'Операции'),
+  _Destination('/rules', Icons.rule_folder_outlined, Icons.rule_folder, 'Правила'),
+  _Destination('/sync', Icons.sync_outlined, Icons.sync, 'Синк'),
+  _Destination('/settings', Icons.settings_outlined, Icons.settings, 'Настройки'),
+];
+
+/// Breakpoints per the plan: bottom bar under 600, collapsed rail 600–1200,
+/// extended rail at 1200 and above.
+const _narrowBreakpoint = 600.0;
+const _wideBreakpoint = 1200.0;
+
+/// Adaptive navigation shell around the current route: a bottom
+/// [NavigationBar] on narrow surfaces, a [NavigationRail] (collapsed or
+/// extended) otherwise.
+class AppShell extends StatelessWidget {
+  const AppShell({required this.location, required this.child, super.key});
+
+  final String location;
+  final Widget child;
+
+  int get _selectedIndex {
+    final i = _destinations.indexWhere((d) => d.path == location);
+    return i == -1 ? 0 : i;
+  }
+
+  void _onSelect(BuildContext context, int index) {
+    if (index != _selectedIndex) context.go(_destinations[index].path);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final width = MediaQuery.sizeOf(context).width;
+
+    if (width < _narrowBreakpoint) {
+      return Scaffold(
+        body: SafeArea(child: child),
+        bottomNavigationBar: NavigationBar(
+          selectedIndex: _selectedIndex,
+          onDestinationSelected: (i) => _onSelect(context, i),
+          destinations: [
+            for (final d in _destinations)
+              NavigationDestination(
+                icon: Icon(d.icon),
+                selectedIcon: Icon(d.selectedIcon),
+                label: d.label,
+              ),
+          ],
+        ),
+      );
+    }
+
+    final extended = width >= _wideBreakpoint;
+    return Scaffold(
+      body: Row(
+        children: [
+          NavigationRail(
+            extended: extended,
+            minExtendedWidth: 220,
+            selectedIndex: _selectedIndex,
+            onDestinationSelected: (i) => _onSelect(context, i),
+            labelType: extended ? NavigationRailLabelType.none : NavigationRailLabelType.selected,
+            destinations: [
+              for (final d in _destinations)
+                NavigationRailDestination(
+                  icon: Icon(d.icon),
+                  selectedIcon: Icon(d.selectedIcon),
+                  label: Text(d.label),
+                ),
+            ],
+          ),
+          const VerticalDivider(width: 1),
+          Expanded(child: SafeArea(child: child)),
+        ],
+      ),
+    );
+  }
+}